diff options
Diffstat (limited to 'cipher')
41 files changed, 17970 insertions, 0 deletions
diff --git a/cipher/ChangeLog b/cipher/ChangeLog new file mode 100644 index 000000000..da3ff580e --- /dev/null +++ b/cipher/ChangeLog @@ -0,0 +1,902 @@ +2002-05-07 Stefan Bellon <sbellon@sbellon.de> + + * md.c (md_start_debug): Use EXTSEP_S instead of ".". + +2002-04-24 Werner Koch <wk@gnupg.org> + + * tiger.c (tiger_final): Removed superfluous token pasting operators. + * md5.c (md5_final): Ditto. + +2002-04-22 Stefan Bellon <sbellon@sbellon.de> + + * rndriscos.c (func_table): Made func a function pointer. + (init_device): Improved loading of CryptRandom module. + +2002-04-18 Werner Koch <wk@gnupg.org> + + * rndlinux.c, rndegd.c, rndunix.c (func_table): Made func a + function pointer. Note that we still need to change the module + interface to cope with data vs function pointer problems. Hmmm, + even dlsym has a problem with this. + +2002-04-10 David Shaw <dshaw@jabberwocky.com> + + * cipher.c (setup_cipher_table, cipher_open, cipher_encrypt, + cipher_decrypt, dummy_setkey, dummy_encrypt_block, + dummy_decrypt_block): the dummy cipher should only be built on + development versions. + +2002-04-06 Werner Koch <wk@gnupg.org> + + * rijndael.c (rijndael_get_info): We do only support a 128 bit + blocksize so it makes sense to change the algorithm strings to + AES. + * cipher.c (string_to_cipher_algo): Map "RIJNDAEL" to "AES". + +2002-02-14 Werner Koch <wk@gnupg.org> + + * random.c (mix_pool): Removed the failsafe stuff again. It makes + the code more complicate and may give the path to more bugs. + +2002-02-10 Werner Koch <wk@gnupg.org> + + * random.c (mix_pool): Carry an extra failsafe_digest buffer + around to make the function more robust. + +2002-02-08 Werner Koch <wk@gnupg.org> + + * random.c (add_randomness): Xor new data into the pool and not + just copy it. This avoids any choosen input attacks which are not + serious in our setting because an outsider won't be able to mix + data in and even then we keep going with a PRNG. Thanks to Stefan + Keller for pointing this out. + +2002-01-02 Stefan Bellon <sbellon@sbellon.de> + + * rndriscos.c [__riscos__]: Updated include file name. + +2001-12-21 Werner Koch <wk@gnupg.org> + + * Makefile.am (DISCLEANFILES): Add construct.c + +2001-12-19 Werner Koch <wk@gnupg.org> + + * rndw32.c [CYGWIN32]: Include winioctl.h. By Disastry. + +2001-11-08 Werner Koch <wk@gnupg.org> + + * primegen.c (gen_prime): Set 2 high order bits for secret primes. + * rsa.c (generate): Loop until we find the exact modulus size. + Changed the exponent to 41. + +2001-10-22 Werner Koch <wk@gnupg.org> + + * Makefile.am: Need to use $(EXEEXT) where approriate. + +2001-09-09 Werner Koch <wk@gnupg.org> + + * rsa.c (rsa_get_info): s/usage/r_usage/ to avoid shadow warnings. + +2001-08-24 Werner Koch <wk@gnupg.org> + + * md.c (md_write): Made buf arg const. + +2001-08-22 Werner Koch <wk@gnupg.org> + + * random.c (fast_random_poll): Don't use gethrtime if it is broken. + +2001-08-20 Werner Koch <wk@gnupg.org> + + Applied patches from Stefan Bellon <sbellon@sbellon.de> to support + RISC OS. Nearly all of these patches are identified by the + __riscos__ macro. + * blowfish.c, twofish.c: Added pragmas for use with a Norcraft + compiler. + * dynload.c, md5.c, rmd160.c, sha1.c: Minor patches for RISC OS. + * rndriscos.c: New. + * rnd-internal.h: Added prototype. + * random.c (fast_random_poll): Use '#if defined' instead of just + 'defined'; needed for RISC OS. + * primegen.c (gen_prime): count? are now ints for consistence + with is_prime(). + +2001-08-08 Werner Koch <wk@gnupg.org> + + * rndw32.c (gather_random): Use toolhelp in addition to the NT + gatherer for Windows2000. Suggested by Sami Tolvanen. + + * random.c (read_pool): Fixed length check, this used to be one + byte to strict. Made an assert out of it because the caller has + already made sure that only poolsize bytes are requested. + Reported by Marcus Brinkmann. + +2001-07-18 Werner Koch <wk@gnupg.org> + + * rndlinux.c (gather_random): casted a size_t arg to int so that + the format string is correct. Casting is okay here and avoids + translation changes. + +2001-06-12 Werner Koch <wk@gnupg.org> + + * cipher.c (string_to_cipher_algo): Use ascii_strcasecmp(). + * md.c (string_to_digest_algo): Ditto. + * pubkey.c (string_to_pubkey_algo): Ditto. + * rndw32.c (slow_gatherer_windowsNT): Ditto. Not really needed + here but anyway. + +2001-04-29 Werner Koch <wk@gnupg.org> + + * random.c (fast_random_poll): Do not check the return code of + getrusage. + +2001-04-17 Werner Koch <wk@gnupg.org> + + * rndunix.c: Add a signal.h header to avoid warnings on Solaris 7 + and 8. + +2001-04-16 Werner Koch <wk@gnupg.org> + + * dynload.c [__MINGW32__]: Applied patch from Timo Schulz to make + it work under W32. This patches is based on the one from + Disastry@saiknes.lv + +2001-04-06 Werner Koch <wk@gnupg.org> + + * rijndael.c, des.c, blowfish.c, twofish.c, cast5.c (burn_stack): + New. Add wrappers for most functions to be able to call + burn_stack after the function invocation. This methods seems to be + the most portable way to zeroise the stack used. It does only work + on stack frame based machines but it is highly portable and has no + side effects. Just setting the automatic variables at the end of + a function to zero does not work well because the compiler will + optimize them away - marking them as volatile would be bad for + performance. + * md5.c, sha1.c, rmd160.c, tiger.c (burn_stack): Likewise. + * random.c (burn_stack): New. + (mix_pool): Use it here to burn the stack of the mixblock function. + +2001-04-02 Werner Koch <wk@gnupg.org> + + * primegen.c (generate_elg_prime): I was not initialized for mode + != 1. Freed q at 3 places. Thanks to Tommi Komulainen. + +2001-03-28 Werner Koch <wk@gnupg.org> + + * md5.c (md5_final): Fixed calculation of hashed length. Thanks + to disastry@saiknes.lv for pointing out that it was horrible wrong + for more than 512MB of input. + * sha1.c (sha1_final): Ditto. + * rmd160.c (rmd160_final): Ditto. + * tiger.c (tiger_final): Ditto. + +2001-03-19 Werner Koch <wk@gnupg.org> + + * blowfish.c (encrypt,do_encrypt): Changed name to do_encrypt to + avoid name clahses with an encrypt function in stdlib.h of + Dynix/PIX. Thanks to Gene Carter. + * elgamal.c (encrypt,do_encrypt): Ditto. + +2001-03-12 Werner Koch <wk@gnupg.org> + + * twofish.c (gnupgext_enum_func): Add some static when comnpiled + as a module. + + * tiger.c (tiger_get_info): Return "TIGER192" and not just + "TIGER". By Edwin Woudt. + +2001-03-08 Werner Koch <wk@gnupg.org> + + * random.c: Always include time.h - standard requirement. Thanks + to James Troup. + +2001-01-18 Werner Koch <wk@gnupg.org> + + * rndw32.c: Fixed typo and wrong ifdef for VER_PLATFORM* macro + +2001-01-12 Werner Koch <wk@gnupg.org> + + * cipher.c (cipher_encrypt,cipher_encrypt): Use blocksize and + not 8 for CBC mode (However: we don't use CBS in OpenPGP). + +2000-11-22 Werner Koch <wk@gnupg.org> + + * rndegd.c (gather_random): Fixed default socket to be '=entropy'. + Thanks to Tomasz Kozlowski. + +2000-10-12 Werner Koch <wk@gnupg.org> + + * rijndael.c: New. + * cipher.c: Add Rijndael support. + +Wed Oct 4 15:50:18 CEST 2000 Werner Koch <wk@openit.de> + + * sha1.c (transform): Use rol() macro. Actually this is not needed + for a newer gcc but there are still aoter compilers. + +Thu Sep 14 14:20:38 CEST 2000 Werner Koch <wk@openit.de> + + * random.c (fast_random_poll): Check ENOSYS for getrusage. + * rndunix.c: Add 2 sources for QNX. By Sam Roberts. + +Wed Sep 13 18:12:34 CEST 2000 Werner Koch <wk@openit.de> + + * rsa.c (secret): Speed up by using the CRT. For a 2k keys this + is about 3 times faster. + (stronger_key_check): New but unused code to check the secret key. + +Wed Sep 6 17:55:47 CEST 2000 Werner Koch <wk@openit.de> + + * rsa.c: Changed the comment about the patent. + * Makefile.am: Included rsa.[ch]. + * pubkey.c: Enabled RSA support. + (pubkey_get_npkey): Removed RSA workaround. + +Fri Aug 25 16:05:38 CEST 2000 Werner Koch <wk@openit.de> + + * rndlinux.c (open_device): Loose random device checking. + By Nils Ellmenreich. + + * rndegd.c (gather_random): Name of socket is nom configurable. + +Wed Jun 28 11:54:44 CEST 2000 Werner Koch <wk@> + + * rsa.c, rsa.h: New based on the old module version (only in CVS for now). + * pubkey.c (setup_pubkey_table): Added commented support for RSA. + +Fri Jun 9 10:09:52 CEST 2000 Werner Koch <wk@openit.de> + + * rndunix.c (waitpid): New. For UTS 2.1. All by Dave Dykstra. + (my_popen): Do the FD_CLOEXEC only if it is available + (start_gatherer): Cope with missing _SC_OPEN_MAX + +Sun May 28 13:55:17 CEST 2000 Werner Koch <wk@openit.de> + + * random.c (read_seed_file): Binary open for DOSish system + (update_random_seed_file): Ditto. + + * rndw32.c: Add some debuging code enabled by an environment variable. + +Tue May 23 09:19:00 CEST 2000 Werner Koch <wk@openit.de> + + * rndw32.c: Started with alternative code to replace entropy.dll + +Thu May 18 11:38:54 CEST 2000 Werner Koch <wk@openit.de> + + * primegen.c (register_primegen_progress): New. + * dsa.c (register_pk_dsa_progress): New. + * elgamal.c (register_pk_elg_progress): New. + +Fri Apr 14 19:37:08 CEST 2000 Werner Koch <wk@openit.de> + + * twofish.c (twofish_get_info): Fixed warning about cast. + +Tue Mar 28 14:26:58 CEST 2000 Werner Koch <wk@openit.de> + + * random.c [MINGW32]: Include process.h for getpid. + +Thu Mar 2 15:37:46 CET 2000 Werner Koch <wk@gnupg.de> + + * random.c (fast_random_poll): Add clock_gettime() as fallback for + system which support this POSIX.4 fucntion. By Sam Roberts. + + * rndunix.c: Add some more headers for QNX. By Sam Roberts. + + * random.c (read_seed_file): Removed the S_ISLNK test becuase it + is already covered by !S_ISREG and is not defined in Unixware. + Reported by Dave Dykstra. + + * sha1.c (sha1_get_info): Removed those stupid double lines. Dave + is really a good lint. + +Wed Feb 23 10:07:57 CET 2000 Werner Koch <wk@gnupg.de> + + * twofish.c (twofish_get_info): Add some const to the casts. By Martin + Kahlert. + +Mon Feb 14 14:30:20 CET 2000 Werner Koch <wk@gnupg.de> + + (update_random_seed_file): Silently ignore update request when pool + is not filled. + +Fri Feb 11 17:44:40 CET 2000 Werner Koch <wk@gnupg.de> + + * random.c (read_seed_file): New. + (set_random_seed_file): New. + (read_pool): Try to read the seeding file. + (update_random_seed_file): New. + + (read_pool): Do an initial extra seeding when level 2 quality random + is requested the first time. This requestes at least POOLSIZE/2 bytes + of entropy. Compined with the seeding file this should make normal + random bytes cheaper and increase the quality of the random bytes + used for key generation. + + * rndegd.c (gather_random): Shortcut level 0. + * rndunix.c (gather_random): Ditto. + * rndw32.c (gather_random): Ditto. + +Fri Jan 14 18:32:01 CET 2000 Werner Koch <wk@gnupg.de> + + * rmd160.c (rmd160_get_info): Moved casting to the left side due to a + problem with UTS4.3. Suggested by Dave Dykstra. + * sha1.c (sha1_get_info): Ditto. + * tiger.c (tiger_get_info): Ditto. + * md5.c (md5_get_info): Ditto + * des.c (des_get_info): Ditto. + * blowfish.c (blowfish_get_info): Ditto. + * cast5.c (cast5_get_info): Ditto. + * twofish.c (twofish_get_info): Ditto. + +Thu Jan 13 19:31:58 CET 2000 Werner Koch <wk@gnupg.de> + + * elgamal.c (wiener_map): New. + (gen_k): Use a much smaller k. + (generate): Calculate the qbits using the wiener map and + choose an x at a size comparable to the one choosen in gen_k + + * random.c (read_pool): Print a more friendly error message in + cases when too much random is requested in one call. + + * Makefile.am (tiger): Replaced -O1 by -O. Suggested by Alec Habig. + +Sat Dec 4 12:30:28 CET 1999 Werner Koch <wk@gnupg.de> + + * primegen.c (generate_elg_prime): All primes are now generated with + the lowest random quality level. Becuase they are public anyway we + don't need stronger random and by this we do not drain the systems + entropy so much. + +Thu Oct 28 16:08:20 CEST 1999 Werner Koch <wk@gnupg.de> + + * random.c (fast_random_poll): Check whether RUSAGE_SELF is defined; + this is not the case for some ESIX and Unixware, although they have + getrusage(). + + * elgamal.c (sign): Hugh found strange code here. Replaced by BUG(). + +Mon Oct 11 09:24:12 CEST 1999 Werner Koch <wk@gnupg.de> + + * rndw32.c (gather_random): Handle PCP_SEEDER_TOO_SMALL. + +Sat Oct 9 20:34:41 CEST 1999 Werner Koch <wk@gnupg.de> + + * Makefile.am: Tweaked module build and removed libtool + +Fri Oct 8 20:32:01 CEST 1999 Werner Koch <wk@gnupg.de> + + * rndw32.c (load_and_init_winseed): Use the Registry to locate the DLL + +Mon Oct 4 21:23:04 CEST 1999 Werner Koch <wk@gnupg.de> + + * md.c (md_reset): Clear finalized; thanks to Ulf Moeller for + fixing this bug. + +Sat Sep 18 12:51:51 CEST 1999 Werner Koch <wk@isil.d.shuttle.de> + + + * Makefile.am: Never compile mingw32 as module + +Wed Sep 15 14:39:59 CEST 1999 Michael Roth <mroth@nessie.de> + + * des.c: Various speed improvements: One bit pre rotation + trick after initial permutation (Richard Outerbridge). + Finished test of SSLeay Tripple-DES patterns. + +Wed Sep 15 16:22:17 CEST 1999 Werner Koch <wk@isil.d.shuttle.de> + + * rndw32.c: New. + +Mon Sep 13 10:51:29 CEST 1999 Werner Koch <wk@isil.d.shuttle.de> + + * bithelp.h: New. + * rmd160.h, sha1.h, md5.h: Use the rol macro from bithelp.h + +Tue Sep 7 16:23:36 CEST 1999 Werner Koch <wk@isil.d.shuttle.de> + + * Makefile.am: Fixed seds for latest egcc. By Ollivier Robert. + +Mon Sep 6 19:59:08 CEST 1999 Werner Koch <wk@isil.d.shuttle.de> + + * des.c (selftest): Add some testpattern + +Mon Aug 30 20:38:33 CEST 1999 Werner Koch <wk@isil.d.shuttle.de> + + * cipher.c (do_cbc_encrypt): Fixed serious bug occuring when not using + in place encryption. Pointed out by Frank Stajano. + +Mon Jul 26 09:34:46 CEST 1999 Werner Koch <wk@isil.d.shuttle.de> + + * md5.c (md5_final): Fix for a SCO cpp bug. + +Thu Jul 15 10:15:35 CEST 1999 Werner Koch <wk@isil.d.shuttle.de> + + * elgamal.c (elg_check_secret_key,elg_encrypt + elg_decrypt,elg_sign,elg_verify): Sanity check on the args. + * dsa.c (dsa_check_secret_key,dsa_sign,dsa_verify): Ditto. + + * pubkey.c (disable_pubkey_algo): New. + (check_pubkey_algo2): Look at disabled algo table. + * cipher.c (disable_cipher_algo): New. + (check_cipher_algo): Look at disabled algo table. + +Wed Jul 7 13:08:40 CEST 1999 Werner Koch <wk@isil.d.shuttle.de> + + * Makefile.am: Support for libtool. + +Fri Jul 2 11:45:54 CEST 1999 Werner Koch <wk@isil.d.shuttle.de> + + * dsa.c (gen_k): Changed algorithm to consume less random bytes + * elgamal.c (gen_k): Ditto. + + * random.c (random_dump_stats): New. + +Thu Jul 1 12:47:31 CEST 1999 Werner Koch <wk@isil.d.shuttle.de> + + * primegen.c, elgamal.c, dsa.c (progess): New and replaced all + fputc with a call to this function. + +Sat Jun 26 12:15:59 CEST 1999 Werner Koch <wk@isil.d.shuttle.de> + + * rndegd.c (do_write): s/ssize_t/int/ due to SunOS 4.1 probs. + + * cipher.c (do_cbc_encrypt, do_cbc_decrypt): New. + + * dynload.c (HAVE_DL_SHL_LOAD): Map hpux API to dlopen (Dave Dykstra). + * Makefile.am (install-exec-hook): Removed. + +Sun May 23 14:20:22 CEST 1999 Werner Koch <wk@isil.d.shuttle.de> + + * cipher.c (setup_cipher_table): Enable Twofish + + * random.c (fast_random_poll): Disable use of times() for mingw32. + +Mon May 17 21:54:43 CEST 1999 Werner Koch <wk@isil.d.shuttle.de> + + * dynload.c (register_internal_cipher_extension): Minor init fix. + +Tue May 4 15:47:53 CEST 1999 Werner Koch <wk@isil.d.shuttle.de> + + * primegen.c (gen_prime): Readded the Fermat test. Fixed the bug + that we didn't correct for step when passing the prime to the + Rabin-Miller test which led to bad performance (Stefan Keller). + (check_prime): Add a first Fermat test. + +Sun Apr 18 10:11:28 CEST 1999 Werner Koch <wk@isil.d.shuttle.de> + + * cipher.c (cipher_setiv): Add ivlen arg, changed all callers. + + * random.c (randomize_buffer): alway use secure memory because + we can't use m_is_secure() on a statically allocated buffer. + + * twofish.c: Replaced some macros by a loop to reduce text size. + * Makefile.am (twofish): No more need for sed editing. + +Fri Apr 9 12:26:25 CEST 1999 Werner Koch <wk@isil.d.shuttle.de> + + * cipher.c (cipher_open): Reversed the changes for AUTO_CFB. + + * blowfish.c: Dropped the Blowfish 160 mode. + * cipher.c (cipher_open): Ditto. + (setup_cipher_table): Ditto. And removed support of twofish128 + +Wed Apr 7 20:51:39 CEST 1999 Werner Koch <wk@isil.d.shuttle.de> + + * random.c (get_random_bits): Can now handle requests > POOLSIZE + + * cipher.c (cipher_open): Now uses standard CFB for automode if + the blocksize is gt 8 (according to rfc2440). + + * twofish.c: Applied Matthew Skala's patches for 256 bit key. + +Tue Apr 6 19:58:12 CEST 1999 Werner Koch <wk@isil.d.shuttle.de> + + * random.c (get_random_bits): Can now handle requests > POOLSIZE + + * cipher.c (cipher_open): Now uses standard CFB for automode if + the blocksize is gt 8 (according to rfc2440). + +Sat Mar 20 11:44:21 CET 1999 Werner Koch <wk@isil.d.shuttle.de> + + * rndlinux.c (tty_printf) [IS_MODULE]: Removed. + + * rndegd.c (gather_random): Some fixes. + +Wed Mar 17 13:09:03 CET 1999 Werner Koch <wk@isil.d.shuttle.de> + + * rndegd.c (do_read): New. + (gather_random): Changed the implementation. + +Mon Mar 8 20:47:17 CET 1999 Werner Koch <wk@isil.d.shuttle.de> + + * dynload.c (DLSYM_NEEDS_UNDERSCORE): Renamed. + +Fri Feb 26 17:55:41 CET 1999 Werner Koch <wk@isil.d.shuttle.de> + + * md.c: Nearly a total rewrote. + +Wed Feb 24 11:07:27 CET 1999 Werner Koch <wk@isil.d.shuttle.de> + + * cipher.c (context): Fixed alignment + * md.c: Ditto. + + * rndegd.c: New + +Mon Feb 22 20:04:00 CET 1999 Werner Koch <wk@isil.d.shuttle.de> + + * rndegd.c: New. + +Wed Feb 10 17:15:39 CET 1999 Werner Koch <wk@isil.d.shuttle.de> + + * Makefile.am: Modules are now figured out by configure + * construct.c: New. Generated by configure. Changed all modules + to work with that. + * sha1.h: Removed. + * md5.h: Removed. + + * twofish.c: Changed interface to allow Twofish/256 + + * rndunix.c (start_gatherer): Die on SIGPIPE. + +Wed Jan 20 18:59:49 CET 1999 Werner Koch <wk@isil.d.shuttle.de> + + * rndunix.c (gather_random): Fix to avoid infinite loop. + +Sun Jan 17 11:04:33 CET 1999 Werner Koch <wk@isil.d.shuttle.de> + + * des.c (is_weak_key): Replace system memcmp due to bugs + in SunOS's memcmp. + (des_get_info): Return error on failed selftest. + * twofish.c (twofish_setkey): Return error on failed selftest or + invalid keylength. + * cast5.c (cast_setkey): Ditto. + * blowfish.c (bf_setkey): Return error on failed selftest. + +Tue Jan 12 11:17:18 CET 1999 Werner Koch <wk@isil.d.shuttle.de> + + * random.c (random_is_faked): New. + + * tiger.c: Only compile if we have the u64 type + +Sat Jan 9 16:02:23 CET 1999 Werner Koch <wk@isil.d.shuttle.de> + + * rndunix.c (gather_random): check for setuid. + + * Makefile.am: Add a way to staically link random modules + +Thu Jan 7 18:00:58 CET 1999 Werner Koch <wk@isil.d.shuttle.de> + + * md.c (md_stop_debug): Do a flush first. + (md_open): size of buffer now depends on the secure parameter + +Sun Jan 3 15:28:44 CET 1999 Werner Koch <wk@isil.d.shuttle.de> + + * rndunix.c (start_gatherer): Fixed stupid ==/= bug + +1998-12-31 Geoff Keating <geoffk@ozemail.com.au> + + * des.c (is_weak_key): Rewrite loop end condition. + +Tue Dec 29 14:41:47 CET 1998 Werner Koch <wk@isil.d.shuttle.de> + + * random.c: add unistd.h for getpid(). + (RAND_MAX): Fallback value for Sun. + +Wed Dec 23 17:12:24 CET 1998 Werner Koch <wk@isil.d.shuttle.de> + + * md.c (md_copy): Reset debug. + +Mon Dec 14 21:18:49 CET 1998 Werner Koch <wk@isil.d.shuttle.de> + + * random.c (read_random_source): Changed the interface to the + random gathering function. + (gather_faked): Use new interface. + * dynload.c (dynload_getfnc_fast_random_poll): Ditto. + (dynload_getfnc_gather_random): Ditto. + * rndlinux.c (gather_random): Ditto. + * rndunix.c (gather_random): Ditto. + +Sat Dec 12 18:40:32 CET 1998 Werner Koch <wk@isil.d.shuttle.de> + + * dynload.c (SYMBOL_VERSION): New to cope with system which needs + underscores. + + * rndunix.c: Rewrote large parts + +Thu Dec 10 20:15:36 CET 1998 Werner Koch <wk@isil.d.shuttle.de> + + * dynload.c (load_extension): increased needed verbosity level. + + * random.c (fast_random_poll): Fallback to a default fast random + poll function. + (read_random_source): Always use the faked entroy gatherer if no + gather module is available. + * rndlinux.c (fast_poll): Removed. + * rndunix.c (fast_poll): Removed. + + +Wed Nov 25 12:33:41 1998 Werner Koch (wk@isil.d.shuttle.de) + + * rand-*.c: Removed. + * rndlinux.c : New. + * rndunix.c : New. + * random.c : Restructured the interface to the gather modules. + (intialize): Call constructor functions + (read_radnom_source): Moved to here. + * dynload.c (dynload_getfnc_gather_random): New. + (dynload_getfnc_fast_random_poll): New. + (register_internal_cipher_extension): New. + (register_cipher_extension): Support of internal modules. + +Sun Nov 8 17:44:36 1998 Werner Koch (wk@isil.d.shuttle.de) + + * rand-unix.c (read_random_source): Removed the assert. + +Mon Oct 19 18:34:30 1998 me,,, (wk@tobold) + + * pubkey.c: Hack to allow us to give some info about RSA keys back. + +Thu Oct 15 11:47:57 1998 Werner Koch (wk@isil.d.shuttle.de) + + * dynload.c: Support for DLD + +Wed Oct 14 12:13:07 1998 Werner Koch (wk@isil.d.shuttle.de) + + * rand-unix.c: Now uses names from configure for /dev/random. + +1998-10-10 SL Baur <steve@altair.xemacs.org> + + * Makefile.am: fix sed -O substitutions to catch -O6, etc. + +Tue Oct 6 10:06:32 1998 Werner Koch (wk@isil.d.shuttle.de) + + * rand-unix.c (HAVE_GETTIMEOFDAY): Fixed (was ..GETTIMEOFTIME :-) + * rand-dummy.c (HAVE_GETTIMEOFDAY): Ditto. + +Mon Sep 28 13:23:09 1998 Werner Koch (wk@isil.d.shuttle.de) + + * md.c (md_digest): New. + (md_reset): New. + +Wed Sep 23 12:27:02 1998 Werner Koch (wk@isil.d.shuttle.de) + + * tiger.c (TIGER_CONTEXT): moved "buf", so that it is 64 bit aligned. + +Mon Sep 21 06:22:53 1998 Werner Koch (wk@(none)) + + * des.c: Some patches from Michael. + +Thu Sep 17 19:00:06 1998 Werner Koch (wk@(none)) + + * des.c : New file from Michael Roth <mroth@nessie.de> + +Mon Sep 14 11:10:55 1998 Werner Koch (wk@(none)) + + * blowfish.c (bf_setkey): Niklas Hernaeus patch to detect weak keys. + +Mon Sep 14 09:19:25 1998 Werner Koch (wk@(none)) + + * dynload.c (RTLD_NOW): Now defined to 1 if it is undefined. + +Mon Sep 7 17:04:33 1998 Werner Koch (wk@(none)) + + * Makefile.am: Fixes to allow a different build directory + +Thu Aug 6 17:25:38 1998 Werner Koch,mobil,,, (wk@tobold) + + * random.c (get_random_byte): Removed and changed all callers + to use get_random_bits() + +Mon Jul 27 10:30:22 1998 Werner Koch (wk@(none)) + + * cipher.c : Support for other blocksizes + (cipher_get_blocksize): New. + * twofish.c: New. + * Makefile.am: Add twofish module. + +Mon Jul 13 21:30:52 1998 Werner Koch (wk@isil.d.shuttle.de) + + * random.c (read_pool): Simple alloc if secure_alloc is not set. + (get_random_bits): Ditto. + +Thu Jul 9 13:01:14 1998 Werner Koch (wk@isil.d.shuttle.de) + + * dynload.c (load_extension): Function now nbails out if + the program is run setuid. + +Wed Jul 8 18:58:23 1998 Werner Koch (wk@isil.d.shuttle.de) + + * rmd160.c (rmd160_hash_buffer): New. + +Thu Jul 2 10:50:30 1998 Werner Koch (wk@isil.d.shuttle.de) + + * cipher.c (cipher_open): algos >=100 use standard CFB + +Thu Jun 25 11:18:25 1998 Werner Koch (wk@isil.d.shuttle.de) + + * Makefile.am: Support for extensions + +Thu Jun 18 12:09:38 1998 Werner Koch (wk@isil.d.shuttle.de) + + * random.c (mix_pool): simpler handling for level 0 + +Mon Jun 15 14:40:48 1998 Werner Koch (wk@isil.d.shuttle.de) + + * tiger.c: Removed from dist, will reappear as dynload module + +Sat Jun 13 14:16:57 1998 Werner Koch (wk@isil.d.shuttle.de) + + * pubkey.c: Major changes to allow extensions. Changed the inteface + of all public key ciphers and added the ability to load extensions + on demand. + + * misc.c: Removed. + +Wed Jun 10 07:52:08 1998 Werner Koch,mobil,,, (wk@tobold) + + * dynload.c: New. + * cipher.c: Major changes to allow extensions. + +Mon Jun 8 22:43:00 1998 Werner Koch (wk@isil.d.shuttle.de) + + * cipher.c: Major internal chnages to support extensions. + * blowfish.c (blowfish_get_info): New and made all internal + functions static, changed heder. + * cast5.c (cast5_get_info): Likewise. + +Mon Jun 8 12:27:52 1998 Werner Koch (wk@isil.d.shuttle.de) + + * tiger.c (transform): Fix for big endian + + * cipher.c (do_cfb_decrypt): Big endian fix. + +Fri May 22 07:30:39 1998 Werner Koch (wk@isil.d.shuttle.de) + + * md.c (md_get_oid): Add a new one for TIGER. + +Thu May 21 13:24:52 1998 Werner Koch (wk@isil.d.shuttle.de) + + * cipher.c: Add support for a dummy cipher + +Thu May 14 15:40:36 1998 Werner Koch (wk@isil.d.shuttle.de) + + * rmd160.c (transform): fixed sigbus - I should better + add Christian von Roques's new implemenation of rmd160_write. + +Fri May 8 18:07:44 1998 Werner Koch (wk@isil.d.shuttle.de) + + * rand-internal.h, rand-unix.c, rand-w32.c, rand_dummy.c: New + * random.c: Moved system specific functions to rand-****.c + +Fri May 8 14:01:17 1998 Werner Koch (wk@isil.d.shuttle.de) + + * random.c (fast_random_poll): add call to gethrtime. + +Tue May 5 21:28:55 1998 Werner Koch (wk@isil.d.shuttle.de) + + * elgamal.c (elg_generate): choosing x was not correct, could + yield 6 bytes which are not from the random pool, tsss, tsss.. + +Tue May 5 14:09:06 1998 Werner Koch (wk@isil.d.shuttle.de) + + * primegen.c (generate_elg_prime): Add arg mode, changed all + callers and implemented mode 1. + +Mon Apr 27 14:41:58 1998 Werner Koch (wk@isil.d.shuttle.de) + + * cipher.c (cipher_get_keylen): New. + +Sun Apr 26 14:44:52 1998 Werner Koch (wk@isil.d.shuttle.de) + + * tiger.c, tiger.h: New. + +Wed Apr 8 14:57:11 1998 Werner Koch (wk@isil.d.shuttle.de) + + * misc.c (check_pubkey_algo2): New. + +Tue Apr 7 18:46:49 1998 Werner Koch (wk@isil.d.shuttle.de) + + * cipher.c: New + * misc.c (check_cipher_algo): Moved to cipher.c + * cast5.c: Moved many functions to cipher.c + * blowfish.c: Likewise. + +Sat Apr 4 19:52:08 1998 Werner Koch (wk@isil.d.shuttle.de) + + * cast5.c: Implemented and tested. + +Wed Apr 1 16:38:27 1998 Werner Koch (wk@isil.d.shuttle.de) + + * elgamal.c (elg_generate): Faster generation of x in some cases. + +Thu Mar 19 13:54:48 1998 Werner Koch (wk@isil.d.shuttle.de) + + * blowfish.c (blowfish_decode_cfb): changed XOR operation + (blowfish_encode_cfb): Ditto. + +Thu Mar 12 14:04:05 1998 Werner Koch (wk@isil.d.shuttle.de) + + * sha1.c (transform): Rewrote + + * blowfish.c (encrypt): Unrolled for rounds == 16 + (decrypt): Ditto. + +Tue Mar 10 16:32:08 1998 Werner Koch (wk@isil.d.shuttle.de) + + * rmd160.c (transform): Unrolled the loop. + +Tue Mar 10 13:05:14 1998 Werner Koch (wk@isil.d.shuttle.de) + + * random.c (read_pool): Add pool_balance stuff. + (get_random_bits): New. + + * elgamal.c (elg_generate): Now uses get_random_bits to generate x. + + +Tue Mar 10 11:33:51 1998 Werner Koch (wk@isil.d.shuttle.de) + + * md.c (md_digest_length): New. + +Tue Mar 10 11:27:41 1998 Werner Koch (wk@isil.d.shuttle.de) + + * dsa.c (dsa_verify): Works. + +Mon Mar 9 12:59:08 1998 Werner Koch (wk@isil.d.shuttle.de) + + * dsa.c, dsa.h: Removed some unused code. + +Wed Mar 4 10:39:22 1998 Werner Koch (wk@isil.d.shuttle.de) + + * md.c (md_open): Add call to fast_random_poll. + blowfish.c (blowfish_setkey): Ditto. + +Tue Mar 3 13:32:54 1998 Werner Koch (wk@isil.d.shuttle.de) + + * rmd160.c (rmd160_mixblock): New. + * random.c: Restructured to start with a new RNG implementation. + * random.h: New. + +Mon Mar 2 19:21:46 1998 Werner Koch (wk@isil.d.shuttle.de) + + * gost.c, gost.h: Removed because they did only conatin trash. + +Sun Mar 1 16:42:29 1998 Werner Koch (wk@isil.d.shuttle.de) + + * random.c (fill_buffer): removed error message if n == -1. + +Fri Feb 27 16:39:34 1998 Werner Koch (wk@isil.d.shuttle.de) + + * md.c (md_enable): No init if called twice. + +Thu Feb 26 07:57:02 1998 Werner Koch (wk@isil.d.shuttle.de) + + * primegen.c (generate_elg_prime): Changed the progress printing. + (gen_prime): Ditto. + +Tue Feb 24 12:28:42 1998 Werner Koch (wk@isil.d.shuttle.de) + + * md5.c, md.5 : Replaced by a modified version of md5.c from + GNU textutils 1.22. + +Wed Feb 18 14:08:30 1998 Werner Koch (wk@isil.d.shuttle.de) + + * md.c, md.h : New debugging support + +Mon Feb 16 10:08:47 1998 Werner Koch (wk@isil.d.shuttle.de) + + * misc.c (cipher_algo_to_string): New + (pubkey_algo_to_string): New. + (digest_algo_to_string): New. + + + + Copyright 1998, 1999, 2000, 2001 Free Software Foundation, Inc. + + This file is free software; as a special exception the author gives + unlimited permission to copy and/or distribute it, with or without + modifications, as long as this notice is preserved. + + This file is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY, to the extent permitted by law; without even the + implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + + diff --git a/cipher/Makefile.am b/cipher/Makefile.am new file mode 100644 index 000000000..83e81877e --- /dev/null +++ b/cipher/Makefile.am @@ -0,0 +1,114 @@ +# Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc. +# +# This file is part of GnuPG. +# +# GnuPG is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# GnuPG is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + +## Process this file with automake to produce Makefile.in + + +INCLUDES = -I.. -I$(top_srcdir)/include -I$(top_srcdir)/intl + +noinst_LIBRARIES = libcipher.a + +# The configure script greps the module names from the EXTRA_PROGRAMS line +EXTRA_PROGRAMS = rndlinux rndunix rndegd rndw32 sha1 rmd160 md5 tiger + +EXTRA_rndlinux_SOURCES = rndlinux.c +EXTRA_rndunix_SOURCES = rndunix.c +EXTRA_rndegd_SOURCES = rndegd.c +EXTRA_rndw32_SOURCES = rndw32.c +EXTRA_md5_SOURCES = md5.c +EXTRA_rmd160_SOURCES = rmd160.c +EXTRA_sha1_SOURCES = sha1.c +EXTRA_tiger_SOURCES = tiger.c + + +if ENABLE_GNUPG_EXTENSIONS +pkglib_PROGRAMS = @DYNAMIC_CIPHER_MODS@ +else +pkglib_PROGRAMS = +endif + + +DYNLINK_MOD_CFLAGS = -DIS_MODULE @DYNLINK_MOD_CFLAGS@ + +#libcipher_a_LDFLAGS = +libcipher_a_SOURCES = cipher.c \ + pubkey.c \ + md.c \ + dynload.c \ + dynload.h \ + bithelp.h \ + des.c \ + des.h \ + twofish.c \ + blowfish.c \ + blowfish.h \ + cast5.c \ + cast5.h \ + rijndael.c \ + elgamal.c \ + elgamal.h \ + rsa.c rsa.h \ + primegen.c \ + random.h \ + random.c \ + rand-internal.h \ + rmd.h \ + dsa.h \ + dsa.c \ + g10c.c \ + smallprime.c \ + construct.c + +# configure creates the constructor file +BUILT_SOURCES = construct.c +DISTCLEANFILES = construct.c + +libcipher_a_DEPENDENCIES = @STATIC_CIPHER_OBJS@ +libcipher_a_LIBADD = @STATIC_CIPHER_OBJS@ + + +# If I remember it correct, automake 1.4 has a feature to set +# fooFLAGS depending on the program. So we should check it out. + +tiger$(EXEEXT): $(srcdir)/tiger.c + `echo $(COMPILE) $(DYNLINK_MOD_CFLAGS) -o tiger $(srcdir)/tiger.c | \ + sed -e 's/-O[2-9s]*/-O/g' ` + +tiger.o: $(srcdir)/tiger.c + `echo $(COMPILE) -c $(srcdir)/tiger.c | sed -e 's/-O[2-9s]*/-O1/g' ` + +#twofish: $(srcdir)/twofish.c +# `echo $(COMPILE) $(DYNLINK_MOD_CFLAGS) -o twofish $(srcdir)/twofish.c | \ +# sed -e 's/-O[0-9s]*/ /g' ` + +twofish: $(srcdir)/twofish.c + $(COMPILE) $(DYNLINK_MOD_CFLAGS) -o twofish $(srcdir)/twofish.c + +#twofish.o: $(srcdir)/twofish.c +# `echo $(COMPILE) -c $(srcdir)/twofish.c | sed -e 's/-O[0-9s]*/ /g' ` + + +rndunix$(EXEEXT): $(srcdir)/rndunix.c + $(COMPILE) $(DYNLINK_MOD_CFLAGS) -o rndunix $(srcdir)/rndunix.c + +rndlinux$(EXEEXT): $(srcdir)/rndlinux.c + $(COMPILE) $(DYNLINK_MOD_CFLAGS) -o rndlinux $(srcdir)/rndlinux.c + +rndegd$(EXEEXT): $(srcdir)/rndegd.c + $(COMPILE) $(DYNLINK_MOD_CFLAGS) -o rndegd $(srcdir)/rndegd.c + diff --git a/cipher/bithelp.h b/cipher/bithelp.h new file mode 100644 index 000000000..188db168a --- /dev/null +++ b/cipher/bithelp.h @@ -0,0 +1,41 @@ +/* bithelp.h - Some bit manipulation helpers + * Copyright (C) 1999 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ +#ifndef G10_BITHELP_H +#define G10_BITHELP_H + + +/**************** + * Rotate a 32 bit integer by n bytes + */ +#if defined(__GNUC__) && defined(__i386__) +static inline u32 +rol( u32 x, int n) +{ + __asm__("roll %%cl,%0" + :"=r" (x) + :"0" (x),"c" (n)); + return x; +} +#else + #define rol(x,n) ( ((x) << (n)) | ((x) >> (32-(n))) ) +#endif + + +#endif /*G10_BITHELP_H*/ diff --git a/cipher/blowfish.c b/cipher/blowfish.c new file mode 100644 index 000000000..d8ad1d00d --- /dev/null +++ b/cipher/blowfish.c @@ -0,0 +1,633 @@ +/* blowfish.c - Blowfish encryption + * Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + * + * For a description of the algorithm, see: + * Bruce Schneier: Applied Cryptography. John Wiley & Sons, 1996. + * ISBN 0-471-11709-9. Pages 336 ff. + */ + +/* Test values: + * key "abcdefghijklmnopqrstuvwxyz"; + * plain "BLOWFISH" + * cipher 32 4E D0 FE F4 13 A2 03 + * + */ + +#include <config.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include "types.h" +#include "errors.h" +#include "blowfish.h" +#include "dynload.h" + + + +#define CIPHER_ALGO_BLOWFISH 4 /* blowfish 128 bit key */ + +#define BLOWFISH_BLOCKSIZE 8 +#define BLOWFISH_ROUNDS 16 + +typedef struct { + u32 s0[256]; + u32 s1[256]; + u32 s2[256]; + u32 s3[256]; + u32 p[BLOWFISH_ROUNDS+2]; +} BLOWFISH_context; + +static int bf_setkey( BLOWFISH_context *c, byte *key, unsigned keylen ); +static void encrypt_block( BLOWFISH_context *bc, byte *outbuf, byte *inbuf ); +static void decrypt_block( BLOWFISH_context *bc, byte *outbuf, byte *inbuf ); + + +/* precomputed S boxes */ +static const u32 ks0[256] = { + 0xD1310BA6,0x98DFB5AC,0x2FFD72DB,0xD01ADFB7,0xB8E1AFED,0x6A267E96, + 0xBA7C9045,0xF12C7F99,0x24A19947,0xB3916CF7,0x0801F2E2,0x858EFC16, + 0x636920D8,0x71574E69,0xA458FEA3,0xF4933D7E,0x0D95748F,0x728EB658, + 0x718BCD58,0x82154AEE,0x7B54A41D,0xC25A59B5,0x9C30D539,0x2AF26013, + 0xC5D1B023,0x286085F0,0xCA417918,0xB8DB38EF,0x8E79DCB0,0x603A180E, + 0x6C9E0E8B,0xB01E8A3E,0xD71577C1,0xBD314B27,0x78AF2FDA,0x55605C60, + 0xE65525F3,0xAA55AB94,0x57489862,0x63E81440,0x55CA396A,0x2AAB10B6, + 0xB4CC5C34,0x1141E8CE,0xA15486AF,0x7C72E993,0xB3EE1411,0x636FBC2A, + 0x2BA9C55D,0x741831F6,0xCE5C3E16,0x9B87931E,0xAFD6BA33,0x6C24CF5C, + 0x7A325381,0x28958677,0x3B8F4898,0x6B4BB9AF,0xC4BFE81B,0x66282193, + 0x61D809CC,0xFB21A991,0x487CAC60,0x5DEC8032,0xEF845D5D,0xE98575B1, + 0xDC262302,0xEB651B88,0x23893E81,0xD396ACC5,0x0F6D6FF3,0x83F44239, + 0x2E0B4482,0xA4842004,0x69C8F04A,0x9E1F9B5E,0x21C66842,0xF6E96C9A, + 0x670C9C61,0xABD388F0,0x6A51A0D2,0xD8542F68,0x960FA728,0xAB5133A3, + 0x6EEF0B6C,0x137A3BE4,0xBA3BF050,0x7EFB2A98,0xA1F1651D,0x39AF0176, + 0x66CA593E,0x82430E88,0x8CEE8619,0x456F9FB4,0x7D84A5C3,0x3B8B5EBE, + 0xE06F75D8,0x85C12073,0x401A449F,0x56C16AA6,0x4ED3AA62,0x363F7706, + 0x1BFEDF72,0x429B023D,0x37D0D724,0xD00A1248,0xDB0FEAD3,0x49F1C09B, + 0x075372C9,0x80991B7B,0x25D479D8,0xF6E8DEF7,0xE3FE501A,0xB6794C3B, + 0x976CE0BD,0x04C006BA,0xC1A94FB6,0x409F60C4,0x5E5C9EC2,0x196A2463, + 0x68FB6FAF,0x3E6C53B5,0x1339B2EB,0x3B52EC6F,0x6DFC511F,0x9B30952C, + 0xCC814544,0xAF5EBD09,0xBEE3D004,0xDE334AFD,0x660F2807,0x192E4BB3, + 0xC0CBA857,0x45C8740F,0xD20B5F39,0xB9D3FBDB,0x5579C0BD,0x1A60320A, + 0xD6A100C6,0x402C7279,0x679F25FE,0xFB1FA3CC,0x8EA5E9F8,0xDB3222F8, + 0x3C7516DF,0xFD616B15,0x2F501EC8,0xAD0552AB,0x323DB5FA,0xFD238760, + 0x53317B48,0x3E00DF82,0x9E5C57BB,0xCA6F8CA0,0x1A87562E,0xDF1769DB, + 0xD542A8F6,0x287EFFC3,0xAC6732C6,0x8C4F5573,0x695B27B0,0xBBCA58C8, + 0xE1FFA35D,0xB8F011A0,0x10FA3D98,0xFD2183B8,0x4AFCB56C,0x2DD1D35B, + 0x9A53E479,0xB6F84565,0xD28E49BC,0x4BFB9790,0xE1DDF2DA,0xA4CB7E33, + 0x62FB1341,0xCEE4C6E8,0xEF20CADA,0x36774C01,0xD07E9EFE,0x2BF11FB4, + 0x95DBDA4D,0xAE909198,0xEAAD8E71,0x6B93D5A0,0xD08ED1D0,0xAFC725E0, + 0x8E3C5B2F,0x8E7594B7,0x8FF6E2FB,0xF2122B64,0x8888B812,0x900DF01C, + 0x4FAD5EA0,0x688FC31C,0xD1CFF191,0xB3A8C1AD,0x2F2F2218,0xBE0E1777, + 0xEA752DFE,0x8B021FA1,0xE5A0CC0F,0xB56F74E8,0x18ACF3D6,0xCE89E299, + 0xB4A84FE0,0xFD13E0B7,0x7CC43B81,0xD2ADA8D9,0x165FA266,0x80957705, + 0x93CC7314,0x211A1477,0xE6AD2065,0x77B5FA86,0xC75442F5,0xFB9D35CF, + 0xEBCDAF0C,0x7B3E89A0,0xD6411BD3,0xAE1E7E49,0x00250E2D,0x2071B35E, + 0x226800BB,0x57B8E0AF,0x2464369B,0xF009B91E,0x5563911D,0x59DFA6AA, + 0x78C14389,0xD95A537F,0x207D5BA2,0x02E5B9C5,0x83260376,0x6295CFA9, + 0x11C81968,0x4E734A41,0xB3472DCA,0x7B14A94A,0x1B510052,0x9A532915, + 0xD60F573F,0xBC9BC6E4,0x2B60A476,0x81E67400,0x08BA6FB5,0x571BE91F, + 0xF296EC6B,0x2A0DD915,0xB6636521,0xE7B9F9B6,0xFF34052E,0xC5855664, + 0x53B02D5D,0xA99F8FA1,0x08BA4799,0x6E85076A }; + +static const u32 ks1[256] = { + 0x4B7A70E9,0xB5B32944,0xDB75092E,0xC4192623,0xAD6EA6B0,0x49A7DF7D, + 0x9CEE60B8,0x8FEDB266,0xECAA8C71,0x699A17FF,0x5664526C,0xC2B19EE1, + 0x193602A5,0x75094C29,0xA0591340,0xE4183A3E,0x3F54989A,0x5B429D65, + 0x6B8FE4D6,0x99F73FD6,0xA1D29C07,0xEFE830F5,0x4D2D38E6,0xF0255DC1, + 0x4CDD2086,0x8470EB26,0x6382E9C6,0x021ECC5E,0x09686B3F,0x3EBAEFC9, + 0x3C971814,0x6B6A70A1,0x687F3584,0x52A0E286,0xB79C5305,0xAA500737, + 0x3E07841C,0x7FDEAE5C,0x8E7D44EC,0x5716F2B8,0xB03ADA37,0xF0500C0D, + 0xF01C1F04,0x0200B3FF,0xAE0CF51A,0x3CB574B2,0x25837A58,0xDC0921BD, + 0xD19113F9,0x7CA92FF6,0x94324773,0x22F54701,0x3AE5E581,0x37C2DADC, + 0xC8B57634,0x9AF3DDA7,0xA9446146,0x0FD0030E,0xECC8C73E,0xA4751E41, + 0xE238CD99,0x3BEA0E2F,0x3280BBA1,0x183EB331,0x4E548B38,0x4F6DB908, + 0x6F420D03,0xF60A04BF,0x2CB81290,0x24977C79,0x5679B072,0xBCAF89AF, + 0xDE9A771F,0xD9930810,0xB38BAE12,0xDCCF3F2E,0x5512721F,0x2E6B7124, + 0x501ADDE6,0x9F84CD87,0x7A584718,0x7408DA17,0xBC9F9ABC,0xE94B7D8C, + 0xEC7AEC3A,0xDB851DFA,0x63094366,0xC464C3D2,0xEF1C1847,0x3215D908, + 0xDD433B37,0x24C2BA16,0x12A14D43,0x2A65C451,0x50940002,0x133AE4DD, + 0x71DFF89E,0x10314E55,0x81AC77D6,0x5F11199B,0x043556F1,0xD7A3C76B, + 0x3C11183B,0x5924A509,0xF28FE6ED,0x97F1FBFA,0x9EBABF2C,0x1E153C6E, + 0x86E34570,0xEAE96FB1,0x860E5E0A,0x5A3E2AB3,0x771FE71C,0x4E3D06FA, + 0x2965DCB9,0x99E71D0F,0x803E89D6,0x5266C825,0x2E4CC978,0x9C10B36A, + 0xC6150EBA,0x94E2EA78,0xA5FC3C53,0x1E0A2DF4,0xF2F74EA7,0x361D2B3D, + 0x1939260F,0x19C27960,0x5223A708,0xF71312B6,0xEBADFE6E,0xEAC31F66, + 0xE3BC4595,0xA67BC883,0xB17F37D1,0x018CFF28,0xC332DDEF,0xBE6C5AA5, + 0x65582185,0x68AB9802,0xEECEA50F,0xDB2F953B,0x2AEF7DAD,0x5B6E2F84, + 0x1521B628,0x29076170,0xECDD4775,0x619F1510,0x13CCA830,0xEB61BD96, + 0x0334FE1E,0xAA0363CF,0xB5735C90,0x4C70A239,0xD59E9E0B,0xCBAADE14, + 0xEECC86BC,0x60622CA7,0x9CAB5CAB,0xB2F3846E,0x648B1EAF,0x19BDF0CA, + 0xA02369B9,0x655ABB50,0x40685A32,0x3C2AB4B3,0x319EE9D5,0xC021B8F7, + 0x9B540B19,0x875FA099,0x95F7997E,0x623D7DA8,0xF837889A,0x97E32D77, + 0x11ED935F,0x16681281,0x0E358829,0xC7E61FD6,0x96DEDFA1,0x7858BA99, + 0x57F584A5,0x1B227263,0x9B83C3FF,0x1AC24696,0xCDB30AEB,0x532E3054, + 0x8FD948E4,0x6DBC3128,0x58EBF2EF,0x34C6FFEA,0xFE28ED61,0xEE7C3C73, + 0x5D4A14D9,0xE864B7E3,0x42105D14,0x203E13E0,0x45EEE2B6,0xA3AAABEA, + 0xDB6C4F15,0xFACB4FD0,0xC742F442,0xEF6ABBB5,0x654F3B1D,0x41CD2105, + 0xD81E799E,0x86854DC7,0xE44B476A,0x3D816250,0xCF62A1F2,0x5B8D2646, + 0xFC8883A0,0xC1C7B6A3,0x7F1524C3,0x69CB7492,0x47848A0B,0x5692B285, + 0x095BBF00,0xAD19489D,0x1462B174,0x23820E00,0x58428D2A,0x0C55F5EA, + 0x1DADF43E,0x233F7061,0x3372F092,0x8D937E41,0xD65FECF1,0x6C223BDB, + 0x7CDE3759,0xCBEE7460,0x4085F2A7,0xCE77326E,0xA6078084,0x19F8509E, + 0xE8EFD855,0x61D99735,0xA969A7AA,0xC50C06C2,0x5A04ABFC,0x800BCADC, + 0x9E447A2E,0xC3453484,0xFDD56705,0x0E1E9EC9,0xDB73DBD3,0x105588CD, + 0x675FDA79,0xE3674340,0xC5C43465,0x713E38D8,0x3D28F89E,0xF16DFF20, + 0x153E21E7,0x8FB03D4A,0xE6E39F2B,0xDB83ADF7 }; + +static const u32 ks2[256] = { + 0xE93D5A68,0x948140F7,0xF64C261C,0x94692934,0x411520F7,0x7602D4F7, + 0xBCF46B2E,0xD4A20068,0xD4082471,0x3320F46A,0x43B7D4B7,0x500061AF, + 0x1E39F62E,0x97244546,0x14214F74,0xBF8B8840,0x4D95FC1D,0x96B591AF, + 0x70F4DDD3,0x66A02F45,0xBFBC09EC,0x03BD9785,0x7FAC6DD0,0x31CB8504, + 0x96EB27B3,0x55FD3941,0xDA2547E6,0xABCA0A9A,0x28507825,0x530429F4, + 0x0A2C86DA,0xE9B66DFB,0x68DC1462,0xD7486900,0x680EC0A4,0x27A18DEE, + 0x4F3FFEA2,0xE887AD8C,0xB58CE006,0x7AF4D6B6,0xAACE1E7C,0xD3375FEC, + 0xCE78A399,0x406B2A42,0x20FE9E35,0xD9F385B9,0xEE39D7AB,0x3B124E8B, + 0x1DC9FAF7,0x4B6D1856,0x26A36631,0xEAE397B2,0x3A6EFA74,0xDD5B4332, + 0x6841E7F7,0xCA7820FB,0xFB0AF54E,0xD8FEB397,0x454056AC,0xBA489527, + 0x55533A3A,0x20838D87,0xFE6BA9B7,0xD096954B,0x55A867BC,0xA1159A58, + 0xCCA92963,0x99E1DB33,0xA62A4A56,0x3F3125F9,0x5EF47E1C,0x9029317C, + 0xFDF8E802,0x04272F70,0x80BB155C,0x05282CE3,0x95C11548,0xE4C66D22, + 0x48C1133F,0xC70F86DC,0x07F9C9EE,0x41041F0F,0x404779A4,0x5D886E17, + 0x325F51EB,0xD59BC0D1,0xF2BCC18F,0x41113564,0x257B7834,0x602A9C60, + 0xDFF8E8A3,0x1F636C1B,0x0E12B4C2,0x02E1329E,0xAF664FD1,0xCAD18115, + 0x6B2395E0,0x333E92E1,0x3B240B62,0xEEBEB922,0x85B2A20E,0xE6BA0D99, + 0xDE720C8C,0x2DA2F728,0xD0127845,0x95B794FD,0x647D0862,0xE7CCF5F0, + 0x5449A36F,0x877D48FA,0xC39DFD27,0xF33E8D1E,0x0A476341,0x992EFF74, + 0x3A6F6EAB,0xF4F8FD37,0xA812DC60,0xA1EBDDF8,0x991BE14C,0xDB6E6B0D, + 0xC67B5510,0x6D672C37,0x2765D43B,0xDCD0E804,0xF1290DC7,0xCC00FFA3, + 0xB5390F92,0x690FED0B,0x667B9FFB,0xCEDB7D9C,0xA091CF0B,0xD9155EA3, + 0xBB132F88,0x515BAD24,0x7B9479BF,0x763BD6EB,0x37392EB3,0xCC115979, + 0x8026E297,0xF42E312D,0x6842ADA7,0xC66A2B3B,0x12754CCC,0x782EF11C, + 0x6A124237,0xB79251E7,0x06A1BBE6,0x4BFB6350,0x1A6B1018,0x11CAEDFA, + 0x3D25BDD8,0xE2E1C3C9,0x44421659,0x0A121386,0xD90CEC6E,0xD5ABEA2A, + 0x64AF674E,0xDA86A85F,0xBEBFE988,0x64E4C3FE,0x9DBC8057,0xF0F7C086, + 0x60787BF8,0x6003604D,0xD1FD8346,0xF6381FB0,0x7745AE04,0xD736FCCC, + 0x83426B33,0xF01EAB71,0xB0804187,0x3C005E5F,0x77A057BE,0xBDE8AE24, + 0x55464299,0xBF582E61,0x4E58F48F,0xF2DDFDA2,0xF474EF38,0x8789BDC2, + 0x5366F9C3,0xC8B38E74,0xB475F255,0x46FCD9B9,0x7AEB2661,0x8B1DDF84, + 0x846A0E79,0x915F95E2,0x466E598E,0x20B45770,0x8CD55591,0xC902DE4C, + 0xB90BACE1,0xBB8205D0,0x11A86248,0x7574A99E,0xB77F19B6,0xE0A9DC09, + 0x662D09A1,0xC4324633,0xE85A1F02,0x09F0BE8C,0x4A99A025,0x1D6EFE10, + 0x1AB93D1D,0x0BA5A4DF,0xA186F20F,0x2868F169,0xDCB7DA83,0x573906FE, + 0xA1E2CE9B,0x4FCD7F52,0x50115E01,0xA70683FA,0xA002B5C4,0x0DE6D027, + 0x9AF88C27,0x773F8641,0xC3604C06,0x61A806B5,0xF0177A28,0xC0F586E0, + 0x006058AA,0x30DC7D62,0x11E69ED7,0x2338EA63,0x53C2DD94,0xC2C21634, + 0xBBCBEE56,0x90BCB6DE,0xEBFC7DA1,0xCE591D76,0x6F05E409,0x4B7C0188, + 0x39720A3D,0x7C927C24,0x86E3725F,0x724D9DB9,0x1AC15BB4,0xD39EB8FC, + 0xED545578,0x08FCA5B5,0xD83D7CD3,0x4DAD0FC4,0x1E50EF5E,0xB161E6F8, + 0xA28514D9,0x6C51133C,0x6FD5C7E7,0x56E14EC4,0x362ABFCE,0xDDC6C837, + 0xD79A3234,0x92638212,0x670EFA8E,0x406000E0 }; + +static const u32 ks3[256] = { + 0x3A39CE37,0xD3FAF5CF,0xABC27737,0x5AC52D1B,0x5CB0679E,0x4FA33742, + 0xD3822740,0x99BC9BBE,0xD5118E9D,0xBF0F7315,0xD62D1C7E,0xC700C47B, + 0xB78C1B6B,0x21A19045,0xB26EB1BE,0x6A366EB4,0x5748AB2F,0xBC946E79, + 0xC6A376D2,0x6549C2C8,0x530FF8EE,0x468DDE7D,0xD5730A1D,0x4CD04DC6, + 0x2939BBDB,0xA9BA4650,0xAC9526E8,0xBE5EE304,0xA1FAD5F0,0x6A2D519A, + 0x63EF8CE2,0x9A86EE22,0xC089C2B8,0x43242EF6,0xA51E03AA,0x9CF2D0A4, + 0x83C061BA,0x9BE96A4D,0x8FE51550,0xBA645BD6,0x2826A2F9,0xA73A3AE1, + 0x4BA99586,0xEF5562E9,0xC72FEFD3,0xF752F7DA,0x3F046F69,0x77FA0A59, + 0x80E4A915,0x87B08601,0x9B09E6AD,0x3B3EE593,0xE990FD5A,0x9E34D797, + 0x2CF0B7D9,0x022B8B51,0x96D5AC3A,0x017DA67D,0xD1CF3ED6,0x7C7D2D28, + 0x1F9F25CF,0xADF2B89B,0x5AD6B472,0x5A88F54C,0xE029AC71,0xE019A5E6, + 0x47B0ACFD,0xED93FA9B,0xE8D3C48D,0x283B57CC,0xF8D56629,0x79132E28, + 0x785F0191,0xED756055,0xF7960E44,0xE3D35E8C,0x15056DD4,0x88F46DBA, + 0x03A16125,0x0564F0BD,0xC3EB9E15,0x3C9057A2,0x97271AEC,0xA93A072A, + 0x1B3F6D9B,0x1E6321F5,0xF59C66FB,0x26DCF319,0x7533D928,0xB155FDF5, + 0x03563482,0x8ABA3CBB,0x28517711,0xC20AD9F8,0xABCC5167,0xCCAD925F, + 0x4DE81751,0x3830DC8E,0x379D5862,0x9320F991,0xEA7A90C2,0xFB3E7BCE, + 0x5121CE64,0x774FBE32,0xA8B6E37E,0xC3293D46,0x48DE5369,0x6413E680, + 0xA2AE0810,0xDD6DB224,0x69852DFD,0x09072166,0xB39A460A,0x6445C0DD, + 0x586CDECF,0x1C20C8AE,0x5BBEF7DD,0x1B588D40,0xCCD2017F,0x6BB4E3BB, + 0xDDA26A7E,0x3A59FF45,0x3E350A44,0xBCB4CDD5,0x72EACEA8,0xFA6484BB, + 0x8D6612AE,0xBF3C6F47,0xD29BE463,0x542F5D9E,0xAEC2771B,0xF64E6370, + 0x740E0D8D,0xE75B1357,0xF8721671,0xAF537D5D,0x4040CB08,0x4EB4E2CC, + 0x34D2466A,0x0115AF84,0xE1B00428,0x95983A1D,0x06B89FB4,0xCE6EA048, + 0x6F3F3B82,0x3520AB82,0x011A1D4B,0x277227F8,0x611560B1,0xE7933FDC, + 0xBB3A792B,0x344525BD,0xA08839E1,0x51CE794B,0x2F32C9B7,0xA01FBAC9, + 0xE01CC87E,0xBCC7D1F6,0xCF0111C3,0xA1E8AAC7,0x1A908749,0xD44FBD9A, + 0xD0DADECB,0xD50ADA38,0x0339C32A,0xC6913667,0x8DF9317C,0xE0B12B4F, + 0xF79E59B7,0x43F5BB3A,0xF2D519FF,0x27D9459C,0xBF97222C,0x15E6FC2A, + 0x0F91FC71,0x9B941525,0xFAE59361,0xCEB69CEB,0xC2A86459,0x12BAA8D1, + 0xB6C1075E,0xE3056A0C,0x10D25065,0xCB03A442,0xE0EC6E0E,0x1698DB3B, + 0x4C98A0BE,0x3278E964,0x9F1F9532,0xE0D392DF,0xD3A0342B,0x8971F21E, + 0x1B0A7441,0x4BA3348C,0xC5BE7120,0xC37632D8,0xDF359F8D,0x9B992F2E, + 0xE60B6F47,0x0FE3F11D,0xE54CDA54,0x1EDAD891,0xCE6279CF,0xCD3E7E6F, + 0x1618B166,0xFD2C1D05,0x848FD2C5,0xF6FB2299,0xF523F357,0xA6327623, + 0x93A83531,0x56CCCD02,0xACF08162,0x5A75EBB5,0x6E163697,0x88D273CC, + 0xDE966292,0x81B949D0,0x4C50901B,0x71C65614,0xE6C6C7BD,0x327A140A, + 0x45E1D006,0xC3F27B9A,0xC9AA53FD,0x62A80F00,0xBB25BFE2,0x35BDD2F6, + 0x71126905,0xB2040222,0xB6CBCF7C,0xCD769C2B,0x53113EC0,0x1640E3D3, + 0x38ABBD60,0x2547ADF0,0xBA38209C,0xF746CE76,0x77AFA1C5,0x20756060, + 0x85CBFE4E,0x8AE88DD8,0x7AAAF9B0,0x4CF9AA7E,0x1948C25C,0x02FB8A8C, + 0x01C36AE4,0xD6EBE1F9,0x90D4F869,0xA65CDEA0,0x3F09252D,0xC208E69F, + 0xB74E6132,0xCE77E25B,0x578FDFE3,0x3AC372E6 }; + +static const u32 ps[BLOWFISH_ROUNDS+2] = { + 0x243F6A88,0x85A308D3,0x13198A2E,0x03707344,0xA4093822,0x299F31D0, + 0x082EFA98,0xEC4E6C89,0x452821E6,0x38D01377,0xBE5466CF,0x34E90C6C, + 0xC0AC29B7,0xC97C50DD,0x3F84D5B5,0xB5470917,0x9216D5D9,0x8979FB1B }; + + + +#if BLOWFISH_ROUNDS != 16 +static inline u32 +function_F( BLOWFISH_context *bc, u32 x ) +{ + u16 a, b, c, d; + + #ifdef BIG_ENDIAN_HOST + a = ((byte*)&x)[0]; + b = ((byte*)&x)[1]; + c = ((byte*)&x)[2]; + d = ((byte*)&x)[3]; + #else + a = ((byte*)&x)[3]; + b = ((byte*)&x)[2]; + c = ((byte*)&x)[1]; + d = ((byte*)&x)[0]; + #endif + + return ((bc->s0[a] + bc->s1[b]) ^ bc->s2[c] ) + bc->s3[d]; +} +#endif + +#ifdef BIG_ENDIAN_HOST + #define F(x) ((( s0[((byte*)&x)[0]] + s1[((byte*)&x)[1]]) \ + ^ s2[((byte*)&x)[2]]) + s3[((byte*)&x)[3]] ) +#else + #define F(x) ((( s0[((byte*)&x)[3]] + s1[((byte*)&x)[2]]) \ + ^ s2[((byte*)&x)[1]]) + s3[((byte*)&x)[0]] ) +#endif +#define R(l,r,i) do { l ^= p[i]; r ^= F(l); } while(0) + +static void +burn_stack (int bytes) +{ + char buf[64]; + + memset (buf, 0, sizeof buf); + bytes -= sizeof buf; + if (bytes > 0) + burn_stack (bytes); +} + + +static void +do_encrypt( BLOWFISH_context *bc, u32 *ret_xl, u32 *ret_xr ) +{ + #if BLOWFISH_ROUNDS == 16 + u32 xl, xr, *s0, *s1, *s2, *s3, *p; + + xl = *ret_xl; + xr = *ret_xr; + p = bc->p; + s0 = bc->s0; + s1 = bc->s1; + s2 = bc->s2; + s3 = bc->s3; + + R( xl, xr, 0); + R( xr, xl, 1); + R( xl, xr, 2); + R( xr, xl, 3); + R( xl, xr, 4); + R( xr, xl, 5); + R( xl, xr, 6); + R( xr, xl, 7); + R( xl, xr, 8); + R( xr, xl, 9); + R( xl, xr, 10); + R( xr, xl, 11); + R( xl, xr, 12); + R( xr, xl, 13); + R( xl, xr, 14); + R( xr, xl, 15); + + xl ^= p[BLOWFISH_ROUNDS]; + xr ^= p[BLOWFISH_ROUNDS+1]; + + *ret_xl = xr; + *ret_xr = xl; + + #else + u32 xl, xr, temp, *p; + int i; + + xl = *ret_xl; + xr = *ret_xr; + p = bc->p; + + for(i=0; i < BLOWFISH_ROUNDS; i++ ) { + xl ^= p[i]; + xr ^= function_F(bc, xl); + temp = xl; + xl = xr; + xr = temp; + } + temp = xl; + xl = xr; + xr = temp; + + xr ^= p[BLOWFISH_ROUNDS]; + xl ^= p[BLOWFISH_ROUNDS+1]; + + *ret_xl = xl; + *ret_xr = xr; + #endif +} + + +static void +decrypt( BLOWFISH_context *bc, u32 *ret_xl, u32 *ret_xr ) +{ + #if BLOWFISH_ROUNDS == 16 + u32 xl, xr, *s0, *s1, *s2, *s3, *p; + + xl = *ret_xl; + xr = *ret_xr; + p = bc->p; + s0 = bc->s0; + s1 = bc->s1; + s2 = bc->s2; + s3 = bc->s3; + + R( xl, xr, 17); + R( xr, xl, 16); + R( xl, xr, 15); + R( xr, xl, 14); + R( xl, xr, 13); + R( xr, xl, 12); + R( xl, xr, 11); + R( xr, xl, 10); + R( xl, xr, 9); + R( xr, xl, 8); + R( xl, xr, 7); + R( xr, xl, 6); + R( xl, xr, 5); + R( xr, xl, 4); + R( xl, xr, 3); + R( xr, xl, 2); + + xl ^= p[1]; + xr ^= p[0]; + + *ret_xl = xr; + *ret_xr = xl; + + #else + u32 xl, xr, temp, *p; + int i; + + xl = *ret_xl; + xr = *ret_xr; + p = bc->p; + + for(i=BLOWFISH_ROUNDS+1; i > 1; i-- ) { + xl ^= p[i]; + xr ^= function_F(bc, xl); + temp = xl; + xl = xr; + xr = temp; + } + + temp = xl; + xl = xr; + xr = temp; + + xr ^= p[1]; + xl ^= p[0]; + + *ret_xl = xl; + *ret_xr = xr; + #endif +} + +#undef F +#undef R + +static void +do_encrypt_block( BLOWFISH_context *bc, byte *outbuf, byte *inbuf ) +{ + u32 d1, d2; + + d1 = inbuf[0] << 24 | inbuf[1] << 16 | inbuf[2] << 8 | inbuf[3]; + d2 = inbuf[4] << 24 | inbuf[5] << 16 | inbuf[6] << 8 | inbuf[7]; + do_encrypt( bc, &d1, &d2 ); + outbuf[0] = (d1 >> 24) & 0xff; + outbuf[1] = (d1 >> 16) & 0xff; + outbuf[2] = (d1 >> 8) & 0xff; + outbuf[3] = d1 & 0xff; + outbuf[4] = (d2 >> 24) & 0xff; + outbuf[5] = (d2 >> 16) & 0xff; + outbuf[6] = (d2 >> 8) & 0xff; + outbuf[7] = d2 & 0xff; +} + +static void +encrypt_block( BLOWFISH_context *bc, byte *outbuf, byte *inbuf ) +{ + do_encrypt_block (bc, outbuf, inbuf); + burn_stack (64); +} + +static void +do_decrypt_block( BLOWFISH_context *bc, byte *outbuf, byte *inbuf ) +{ + u32 d1, d2; + + d1 = inbuf[0] << 24 | inbuf[1] << 16 | inbuf[2] << 8 | inbuf[3]; + d2 = inbuf[4] << 24 | inbuf[5] << 16 | inbuf[6] << 8 | inbuf[7]; + decrypt( bc, &d1, &d2 ); + outbuf[0] = (d1 >> 24) & 0xff; + outbuf[1] = (d1 >> 16) & 0xff; + outbuf[2] = (d1 >> 8) & 0xff; + outbuf[3] = d1 & 0xff; + outbuf[4] = (d2 >> 24) & 0xff; + outbuf[5] = (d2 >> 16) & 0xff; + outbuf[6] = (d2 >> 8) & 0xff; + outbuf[7] = d2 & 0xff; +} + +static void +decrypt_block( BLOWFISH_context *bc, byte *outbuf, byte *inbuf ) +{ + do_decrypt_block (bc, outbuf, inbuf); + burn_stack (64); +} + + +static const char* +selftest(void) +{ + BLOWFISH_context c; + byte plain[] = "BLOWFISH"; + byte buffer[8]; + byte plain3[] = { 0xFE, 0xDC, 0xBA, 0x98, 0x76, 0x54, 0x32, 0x10 }; + byte key3[] = { 0x41, 0x79, 0x6E, 0xA0, 0x52, 0x61, 0x6E, 0xE4 }; + byte cipher3[] = { 0xE1, 0x13, 0xF4, 0x10, 0x2C, 0xFC, 0xCE, 0x43 }; + + bf_setkey( &c, "abcdefghijklmnopqrstuvwxyz", 26 ); + encrypt_block( &c, buffer, plain ); + if( memcmp( buffer, "\x32\x4E\xD0\xFE\xF4\x13\xA2\x03", 8 ) ) + return "Blowfish selftest failed (1)."; + decrypt_block( &c, buffer, buffer ); + if( memcmp( buffer, plain, 8 ) ) + return "Blowfish selftest failed (2)."; + + bf_setkey( &c, key3, 8 ); + encrypt_block( &c, buffer, plain3 ); + if( memcmp( buffer, cipher3, 8 ) ) + return "Blowfish selftest failed (3)."; + decrypt_block( &c, buffer, buffer ); + if( memcmp( buffer, plain3, 8 ) ) + return "Blowfish selftest failed (4)."; + return NULL; +} + +#ifdef __riscos__ +/* need to switch off CSE optimisation for Norcroft C (Acorn/Pace) */ +#pragma no_optimise_cse +#endif /* __riscos__ */ + +static int +do_bf_setkey( BLOWFISH_context *c, byte *key, unsigned keylen ) +{ + int i, j; + u32 data, datal, datar; + static int initialized; + static const char *selftest_failed; + + if( !initialized ) { + initialized = 1; + selftest_failed = selftest(); + if( selftest_failed ) + fprintf(stderr,"%s\n", selftest_failed ); + } + if( selftest_failed ) + return G10ERR_SELFTEST_FAILED; + + for(i=0; i < BLOWFISH_ROUNDS+2; i++ ) + c->p[i] = ps[i]; + for(i=0; i < 256; i++ ) { + c->s0[i] = ks0[i]; + c->s1[i] = ks1[i]; + c->s2[i] = ks2[i]; + c->s3[i] = ks3[i]; + } + + for(i=j=0; i < BLOWFISH_ROUNDS+2; i++ ) { + #ifdef BIG_ENDIAN_HOST + ((byte*)&data)[0] = key[j]; + ((byte*)&data)[1] = key[(j+1)%keylen]; + ((byte*)&data)[2] = key[(j+2)%keylen]; + ((byte*)&data)[3] = key[(j+3)%keylen]; + #else + ((byte*)&data)[3] = key[j]; + ((byte*)&data)[2] = key[(j+1)%keylen]; + ((byte*)&data)[1] = key[(j+2)%keylen]; + ((byte*)&data)[0] = key[(j+3)%keylen]; + #endif + c->p[i] ^= data; + j = (j+4) % keylen; + } + + datal = datar = 0; + for(i=0; i < BLOWFISH_ROUNDS+2; i += 2 ) { + do_encrypt( c, &datal, &datar ); + c->p[i] = datal; + c->p[i+1] = datar; + } + for(i=0; i < 256; i += 2 ) { + do_encrypt( c, &datal, &datar ); + c->s0[i] = datal; + c->s0[i+1] = datar; + } + for(i=0; i < 256; i += 2 ) { + do_encrypt( c, &datal, &datar ); + c->s1[i] = datal; + c->s1[i+1] = datar; + } + for(i=0; i < 256; i += 2 ) { + do_encrypt( c, &datal, &datar ); + c->s2[i] = datal; + c->s2[i+1] = datar; + } + for(i=0; i < 256; i += 2 ) { + do_encrypt( c, &datal, &datar ); + c->s3[i] = datal; + c->s3[i+1] = datar; + } + + + /* Check for weak key. A weak key is a key in which a value in */ + /* the P-array (here c) occurs more than once per table. */ + for(i=0; i < 255; i++ ) { + for( j=i+1; j < 256; j++) { + if( (c->s0[i] == c->s0[j]) || (c->s1[i] == c->s1[j]) || + (c->s2[i] == c->s2[j]) || (c->s3[i] == c->s3[j]) ) + return G10ERR_WEAK_KEY; + } + } + + return 0; +} + +#ifdef __riscos__ +#pragma optimise_cse +#endif /* __riscos__ */ + +static int +bf_setkey( BLOWFISH_context *c, byte *key, unsigned keylen ) +{ + int rc = do_bf_setkey (c, key, keylen); + burn_stack (64); + return rc; +} + +/**************** + * Return some information about the algorithm. We need algo here to + * distinguish different flavors of the algorithm. + * Returns: A pointer to string describing the algorithm or NULL if + * the ALGO is invalid. + */ +const char * +blowfish_get_info( int algo, size_t *keylen, + size_t *blocksize, size_t *contextsize, + int (**r_setkey)( void *c, byte *key, unsigned keylen ), + void (**r_encrypt)( void *c, byte *outbuf, byte *inbuf ), + void (**r_decrypt)( void *c, byte *outbuf, byte *inbuf ) + ) +{ + *keylen = 128; + *blocksize = BLOWFISH_BLOCKSIZE; + *contextsize = sizeof(BLOWFISH_context); + *(int (**)(BLOWFISH_context*, byte*, unsigned))r_setkey + = bf_setkey; + *(void (**)(BLOWFISH_context*, byte*, byte*))r_encrypt + = encrypt_block; + *(void (**)(BLOWFISH_context*, byte*, byte*))r_decrypt + = decrypt_block; + + if( algo == CIPHER_ALGO_BLOWFISH ) + return "BLOWFISH"; + return NULL; +} + diff --git a/cipher/blowfish.h b/cipher/blowfish.h new file mode 100644 index 000000000..bed034c73 --- /dev/null +++ b/cipher/blowfish.h @@ -0,0 +1,54 @@ +/* blowfish.h + * Copyright (C) 1998 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ +#ifndef G10_BLOWFISH_H +#define G10_BLOWFISH_H + +#include "types.h" + + +const char * +blowfish_get_info( int algo, size_t *keylen, + size_t *blocksize, size_t *contextsize, + int (**setkeyf)( void *c, byte *key, unsigned keylen ), + void (**encryptf)( void *c, byte *outbuf, byte *inbuf ), + void (**decryptf)( void *c, byte *outbuf, byte *inbuf ) + ); + +/* this is just a kludge for the time we have not yet chnaged the cipher + * stuff to the scheme we use for random and digests */ +const char * +twofish_get_info( int algo, size_t *keylen, + size_t *blocksize, size_t *contextsize, + int (**setkeyf)( void *c, byte *key, unsigned keylen ), + void (**encryptf)( void *c, byte *outbuf, byte *inbuf ), + void (**decryptf)( void *c, byte *outbuf, byte *inbuf ) + ); + +/* this is just a kludge for the time we have not yet chnaged the cipher + * stuff to the scheme we use for random and digests */ +const char * +rijndael_get_info( int algo, size_t *keylen, + size_t *blocksize, size_t *contextsize, + int (**setkeyf)( void *c, byte *key, unsigned keylen ), + void (**encryptf)( void *c, byte *outbuf, byte *inbuf ), + void (**decryptf)( void *c, byte *outbuf, byte *inbuf ) + ); + +#endif /*G10_BLOWFISH_H*/ diff --git a/cipher/cast5.c b/cipher/cast5.c new file mode 100644 index 000000000..c99b47e13 --- /dev/null +++ b/cipher/cast5.c @@ -0,0 +1,654 @@ +/* cast5.c - CAST5 cipher (RFC2144) + * Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + +/* Test vectors: + * + * 128-bit key = 01 23 45 67 12 34 56 78 23 45 67 89 34 56 78 9A + * plaintext = 01 23 45 67 89 AB CD EF + * ciphertext = 23 8B 4F E5 84 7E 44 B2 + * + * 80-bit key = 01 23 45 67 12 34 56 78 23 45 + * = 01 23 45 67 12 34 56 78 23 45 00 00 00 00 00 00 + * plaintext = 01 23 45 67 89 AB CD EF + * ciphertext = EB 6A 71 1A 2C 02 27 1B + * + * 40-bit key = 01 23 45 67 12 + * = 01 23 45 67 12 00 00 00 00 00 00 00 00 00 00 00 + * plaintext = 01 23 45 67 89 AB CD EF + * ciphertext = 7A C8 16 D1 6E 9B 30 2E + */ + +#include <config.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include "types.h" +#include "errors.h" +#include "cast5.h" + + +#define CIPHER_ALGO_CAST5 3 + +#define CAST5_BLOCKSIZE 8 + +typedef struct { + u32 Km[16]; + byte Kr[16]; +} CAST5_context; + +static int cast_setkey( CAST5_context *c, byte *key, unsigned keylen ); +static void encrypt_block( CAST5_context *bc, byte *outbuf, byte *inbuf ); +static void decrypt_block( CAST5_context *bc, byte *outbuf, byte *inbuf ); + + + + +static const u32 s1[256] = { +0x30fb40d4, 0x9fa0ff0b, 0x6beccd2f, 0x3f258c7a, 0x1e213f2f, 0x9c004dd3, 0x6003e540, 0xcf9fc949, +0xbfd4af27, 0x88bbbdb5, 0xe2034090, 0x98d09675, 0x6e63a0e0, 0x15c361d2, 0xc2e7661d, 0x22d4ff8e, +0x28683b6f, 0xc07fd059, 0xff2379c8, 0x775f50e2, 0x43c340d3, 0xdf2f8656, 0x887ca41a, 0xa2d2bd2d, +0xa1c9e0d6, 0x346c4819, 0x61b76d87, 0x22540f2f, 0x2abe32e1, 0xaa54166b, 0x22568e3a, 0xa2d341d0, +0x66db40c8, 0xa784392f, 0x004dff2f, 0x2db9d2de, 0x97943fac, 0x4a97c1d8, 0x527644b7, 0xb5f437a7, +0xb82cbaef, 0xd751d159, 0x6ff7f0ed, 0x5a097a1f, 0x827b68d0, 0x90ecf52e, 0x22b0c054, 0xbc8e5935, +0x4b6d2f7f, 0x50bb64a2, 0xd2664910, 0xbee5812d, 0xb7332290, 0xe93b159f, 0xb48ee411, 0x4bff345d, +0xfd45c240, 0xad31973f, 0xc4f6d02e, 0x55fc8165, 0xd5b1caad, 0xa1ac2dae, 0xa2d4b76d, 0xc19b0c50, +0x882240f2, 0x0c6e4f38, 0xa4e4bfd7, 0x4f5ba272, 0x564c1d2f, 0xc59c5319, 0xb949e354, 0xb04669fe, +0xb1b6ab8a, 0xc71358dd, 0x6385c545, 0x110f935d, 0x57538ad5, 0x6a390493, 0xe63d37e0, 0x2a54f6b3, +0x3a787d5f, 0x6276a0b5, 0x19a6fcdf, 0x7a42206a, 0x29f9d4d5, 0xf61b1891, 0xbb72275e, 0xaa508167, +0x38901091, 0xc6b505eb, 0x84c7cb8c, 0x2ad75a0f, 0x874a1427, 0xa2d1936b, 0x2ad286af, 0xaa56d291, +0xd7894360, 0x425c750d, 0x93b39e26, 0x187184c9, 0x6c00b32d, 0x73e2bb14, 0xa0bebc3c, 0x54623779, +0x64459eab, 0x3f328b82, 0x7718cf82, 0x59a2cea6, 0x04ee002e, 0x89fe78e6, 0x3fab0950, 0x325ff6c2, +0x81383f05, 0x6963c5c8, 0x76cb5ad6, 0xd49974c9, 0xca180dcf, 0x380782d5, 0xc7fa5cf6, 0x8ac31511, +0x35e79e13, 0x47da91d0, 0xf40f9086, 0xa7e2419e, 0x31366241, 0x051ef495, 0xaa573b04, 0x4a805d8d, +0x548300d0, 0x00322a3c, 0xbf64cddf, 0xba57a68e, 0x75c6372b, 0x50afd341, 0xa7c13275, 0x915a0bf5, +0x6b54bfab, 0x2b0b1426, 0xab4cc9d7, 0x449ccd82, 0xf7fbf265, 0xab85c5f3, 0x1b55db94, 0xaad4e324, +0xcfa4bd3f, 0x2deaa3e2, 0x9e204d02, 0xc8bd25ac, 0xeadf55b3, 0xd5bd9e98, 0xe31231b2, 0x2ad5ad6c, +0x954329de, 0xadbe4528, 0xd8710f69, 0xaa51c90f, 0xaa786bf6, 0x22513f1e, 0xaa51a79b, 0x2ad344cc, +0x7b5a41f0, 0xd37cfbad, 0x1b069505, 0x41ece491, 0xb4c332e6, 0x032268d4, 0xc9600acc, 0xce387e6d, +0xbf6bb16c, 0x6a70fb78, 0x0d03d9c9, 0xd4df39de, 0xe01063da, 0x4736f464, 0x5ad328d8, 0xb347cc96, +0x75bb0fc3, 0x98511bfb, 0x4ffbcc35, 0xb58bcf6a, 0xe11f0abc, 0xbfc5fe4a, 0xa70aec10, 0xac39570a, +0x3f04442f, 0x6188b153, 0xe0397a2e, 0x5727cb79, 0x9ceb418f, 0x1cacd68d, 0x2ad37c96, 0x0175cb9d, +0xc69dff09, 0xc75b65f0, 0xd9db40d8, 0xec0e7779, 0x4744ead4, 0xb11c3274, 0xdd24cb9e, 0x7e1c54bd, +0xf01144f9, 0xd2240eb1, 0x9675b3fd, 0xa3ac3755, 0xd47c27af, 0x51c85f4d, 0x56907596, 0xa5bb15e6, +0x580304f0, 0xca042cf1, 0x011a37ea, 0x8dbfaadb, 0x35ba3e4a, 0x3526ffa0, 0xc37b4d09, 0xbc306ed9, +0x98a52666, 0x5648f725, 0xff5e569d, 0x0ced63d0, 0x7c63b2cf, 0x700b45e1, 0xd5ea50f1, 0x85a92872, +0xaf1fbda7, 0xd4234870, 0xa7870bf3, 0x2d3b4d79, 0x42e04198, 0x0cd0ede7, 0x26470db8, 0xf881814c, +0x474d6ad7, 0x7c0c5e5c, 0xd1231959, 0x381b7298, 0xf5d2f4db, 0xab838653, 0x6e2f1e23, 0x83719c9e, +0xbd91e046, 0x9a56456e, 0xdc39200c, 0x20c8c571, 0x962bda1c, 0xe1e696ff, 0xb141ab08, 0x7cca89b9, +0x1a69e783, 0x02cc4843, 0xa2f7c579, 0x429ef47d, 0x427b169c, 0x5ac9f049, 0xdd8f0f00, 0x5c8165bf +}; +static const u32 s2[256] = { +0x1f201094, 0xef0ba75b, 0x69e3cf7e, 0x393f4380, 0xfe61cf7a, 0xeec5207a, 0x55889c94, 0x72fc0651, +0xada7ef79, 0x4e1d7235, 0xd55a63ce, 0xde0436ba, 0x99c430ef, 0x5f0c0794, 0x18dcdb7d, 0xa1d6eff3, +0xa0b52f7b, 0x59e83605, 0xee15b094, 0xe9ffd909, 0xdc440086, 0xef944459, 0xba83ccb3, 0xe0c3cdfb, +0xd1da4181, 0x3b092ab1, 0xf997f1c1, 0xa5e6cf7b, 0x01420ddb, 0xe4e7ef5b, 0x25a1ff41, 0xe180f806, +0x1fc41080, 0x179bee7a, 0xd37ac6a9, 0xfe5830a4, 0x98de8b7f, 0x77e83f4e, 0x79929269, 0x24fa9f7b, +0xe113c85b, 0xacc40083, 0xd7503525, 0xf7ea615f, 0x62143154, 0x0d554b63, 0x5d681121, 0xc866c359, +0x3d63cf73, 0xcee234c0, 0xd4d87e87, 0x5c672b21, 0x071f6181, 0x39f7627f, 0x361e3084, 0xe4eb573b, +0x602f64a4, 0xd63acd9c, 0x1bbc4635, 0x9e81032d, 0x2701f50c, 0x99847ab4, 0xa0e3df79, 0xba6cf38c, +0x10843094, 0x2537a95e, 0xf46f6ffe, 0xa1ff3b1f, 0x208cfb6a, 0x8f458c74, 0xd9e0a227, 0x4ec73a34, +0xfc884f69, 0x3e4de8df, 0xef0e0088, 0x3559648d, 0x8a45388c, 0x1d804366, 0x721d9bfd, 0xa58684bb, +0xe8256333, 0x844e8212, 0x128d8098, 0xfed33fb4, 0xce280ae1, 0x27e19ba5, 0xd5a6c252, 0xe49754bd, +0xc5d655dd, 0xeb667064, 0x77840b4d, 0xa1b6a801, 0x84db26a9, 0xe0b56714, 0x21f043b7, 0xe5d05860, +0x54f03084, 0x066ff472, 0xa31aa153, 0xdadc4755, 0xb5625dbf, 0x68561be6, 0x83ca6b94, 0x2d6ed23b, +0xeccf01db, 0xa6d3d0ba, 0xb6803d5c, 0xaf77a709, 0x33b4a34c, 0x397bc8d6, 0x5ee22b95, 0x5f0e5304, +0x81ed6f61, 0x20e74364, 0xb45e1378, 0xde18639b, 0x881ca122, 0xb96726d1, 0x8049a7e8, 0x22b7da7b, +0x5e552d25, 0x5272d237, 0x79d2951c, 0xc60d894c, 0x488cb402, 0x1ba4fe5b, 0xa4b09f6b, 0x1ca815cf, +0xa20c3005, 0x8871df63, 0xb9de2fcb, 0x0cc6c9e9, 0x0beeff53, 0xe3214517, 0xb4542835, 0x9f63293c, +0xee41e729, 0x6e1d2d7c, 0x50045286, 0x1e6685f3, 0xf33401c6, 0x30a22c95, 0x31a70850, 0x60930f13, +0x73f98417, 0xa1269859, 0xec645c44, 0x52c877a9, 0xcdff33a6, 0xa02b1741, 0x7cbad9a2, 0x2180036f, +0x50d99c08, 0xcb3f4861, 0xc26bd765, 0x64a3f6ab, 0x80342676, 0x25a75e7b, 0xe4e6d1fc, 0x20c710e6, +0xcdf0b680, 0x17844d3b, 0x31eef84d, 0x7e0824e4, 0x2ccb49eb, 0x846a3bae, 0x8ff77888, 0xee5d60f6, +0x7af75673, 0x2fdd5cdb, 0xa11631c1, 0x30f66f43, 0xb3faec54, 0x157fd7fa, 0xef8579cc, 0xd152de58, +0xdb2ffd5e, 0x8f32ce19, 0x306af97a, 0x02f03ef8, 0x99319ad5, 0xc242fa0f, 0xa7e3ebb0, 0xc68e4906, +0xb8da230c, 0x80823028, 0xdcdef3c8, 0xd35fb171, 0x088a1bc8, 0xbec0c560, 0x61a3c9e8, 0xbca8f54d, +0xc72feffa, 0x22822e99, 0x82c570b4, 0xd8d94e89, 0x8b1c34bc, 0x301e16e6, 0x273be979, 0xb0ffeaa6, +0x61d9b8c6, 0x00b24869, 0xb7ffce3f, 0x08dc283b, 0x43daf65a, 0xf7e19798, 0x7619b72f, 0x8f1c9ba4, +0xdc8637a0, 0x16a7d3b1, 0x9fc393b7, 0xa7136eeb, 0xc6bcc63e, 0x1a513742, 0xef6828bc, 0x520365d6, +0x2d6a77ab, 0x3527ed4b, 0x821fd216, 0x095c6e2e, 0xdb92f2fb, 0x5eea29cb, 0x145892f5, 0x91584f7f, +0x5483697b, 0x2667a8cc, 0x85196048, 0x8c4bacea, 0x833860d4, 0x0d23e0f9, 0x6c387e8a, 0x0ae6d249, +0xb284600c, 0xd835731d, 0xdcb1c647, 0xac4c56ea, 0x3ebd81b3, 0x230eabb0, 0x6438bc87, 0xf0b5b1fa, +0x8f5ea2b3, 0xfc184642, 0x0a036b7a, 0x4fb089bd, 0x649da589, 0xa345415e, 0x5c038323, 0x3e5d3bb9, +0x43d79572, 0x7e6dd07c, 0x06dfdf1e, 0x6c6cc4ef, 0x7160a539, 0x73bfbe70, 0x83877605, 0x4523ecf1 +}; +static const u32 s3[256] = { +0x8defc240, 0x25fa5d9f, 0xeb903dbf, 0xe810c907, 0x47607fff, 0x369fe44b, 0x8c1fc644, 0xaececa90, +0xbeb1f9bf, 0xeefbcaea, 0xe8cf1950, 0x51df07ae, 0x920e8806, 0xf0ad0548, 0xe13c8d83, 0x927010d5, +0x11107d9f, 0x07647db9, 0xb2e3e4d4, 0x3d4f285e, 0xb9afa820, 0xfade82e0, 0xa067268b, 0x8272792e, +0x553fb2c0, 0x489ae22b, 0xd4ef9794, 0x125e3fbc, 0x21fffcee, 0x825b1bfd, 0x9255c5ed, 0x1257a240, +0x4e1a8302, 0xbae07fff, 0x528246e7, 0x8e57140e, 0x3373f7bf, 0x8c9f8188, 0xa6fc4ee8, 0xc982b5a5, +0xa8c01db7, 0x579fc264, 0x67094f31, 0xf2bd3f5f, 0x40fff7c1, 0x1fb78dfc, 0x8e6bd2c1, 0x437be59b, +0x99b03dbf, 0xb5dbc64b, 0x638dc0e6, 0x55819d99, 0xa197c81c, 0x4a012d6e, 0xc5884a28, 0xccc36f71, +0xb843c213, 0x6c0743f1, 0x8309893c, 0x0feddd5f, 0x2f7fe850, 0xd7c07f7e, 0x02507fbf, 0x5afb9a04, +0xa747d2d0, 0x1651192e, 0xaf70bf3e, 0x58c31380, 0x5f98302e, 0x727cc3c4, 0x0a0fb402, 0x0f7fef82, +0x8c96fdad, 0x5d2c2aae, 0x8ee99a49, 0x50da88b8, 0x8427f4a0, 0x1eac5790, 0x796fb449, 0x8252dc15, +0xefbd7d9b, 0xa672597d, 0xada840d8, 0x45f54504, 0xfa5d7403, 0xe83ec305, 0x4f91751a, 0x925669c2, +0x23efe941, 0xa903f12e, 0x60270df2, 0x0276e4b6, 0x94fd6574, 0x927985b2, 0x8276dbcb, 0x02778176, +0xf8af918d, 0x4e48f79e, 0x8f616ddf, 0xe29d840e, 0x842f7d83, 0x340ce5c8, 0x96bbb682, 0x93b4b148, +0xef303cab, 0x984faf28, 0x779faf9b, 0x92dc560d, 0x224d1e20, 0x8437aa88, 0x7d29dc96, 0x2756d3dc, +0x8b907cee, 0xb51fd240, 0xe7c07ce3, 0xe566b4a1, 0xc3e9615e, 0x3cf8209d, 0x6094d1e3, 0xcd9ca341, +0x5c76460e, 0x00ea983b, 0xd4d67881, 0xfd47572c, 0xf76cedd9, 0xbda8229c, 0x127dadaa, 0x438a074e, +0x1f97c090, 0x081bdb8a, 0x93a07ebe, 0xb938ca15, 0x97b03cff, 0x3dc2c0f8, 0x8d1ab2ec, 0x64380e51, +0x68cc7bfb, 0xd90f2788, 0x12490181, 0x5de5ffd4, 0xdd7ef86a, 0x76a2e214, 0xb9a40368, 0x925d958f, +0x4b39fffa, 0xba39aee9, 0xa4ffd30b, 0xfaf7933b, 0x6d498623, 0x193cbcfa, 0x27627545, 0x825cf47a, +0x61bd8ba0, 0xd11e42d1, 0xcead04f4, 0x127ea392, 0x10428db7, 0x8272a972, 0x9270c4a8, 0x127de50b, +0x285ba1c8, 0x3c62f44f, 0x35c0eaa5, 0xe805d231, 0x428929fb, 0xb4fcdf82, 0x4fb66a53, 0x0e7dc15b, +0x1f081fab, 0x108618ae, 0xfcfd086d, 0xf9ff2889, 0x694bcc11, 0x236a5cae, 0x12deca4d, 0x2c3f8cc5, +0xd2d02dfe, 0xf8ef5896, 0xe4cf52da, 0x95155b67, 0x494a488c, 0xb9b6a80c, 0x5c8f82bc, 0x89d36b45, +0x3a609437, 0xec00c9a9, 0x44715253, 0x0a874b49, 0xd773bc40, 0x7c34671c, 0x02717ef6, 0x4feb5536, +0xa2d02fff, 0xd2bf60c4, 0xd43f03c0, 0x50b4ef6d, 0x07478cd1, 0x006e1888, 0xa2e53f55, 0xb9e6d4bc, +0xa2048016, 0x97573833, 0xd7207d67, 0xde0f8f3d, 0x72f87b33, 0xabcc4f33, 0x7688c55d, 0x7b00a6b0, +0x947b0001, 0x570075d2, 0xf9bb88f8, 0x8942019e, 0x4264a5ff, 0x856302e0, 0x72dbd92b, 0xee971b69, +0x6ea22fde, 0x5f08ae2b, 0xaf7a616d, 0xe5c98767, 0xcf1febd2, 0x61efc8c2, 0xf1ac2571, 0xcc8239c2, +0x67214cb8, 0xb1e583d1, 0xb7dc3e62, 0x7f10bdce, 0xf90a5c38, 0x0ff0443d, 0x606e6dc6, 0x60543a49, +0x5727c148, 0x2be98a1d, 0x8ab41738, 0x20e1be24, 0xaf96da0f, 0x68458425, 0x99833be5, 0x600d457d, +0x282f9350, 0x8334b362, 0xd91d1120, 0x2b6d8da0, 0x642b1e31, 0x9c305a00, 0x52bce688, 0x1b03588a, +0xf7baefd5, 0x4142ed9c, 0xa4315c11, 0x83323ec5, 0xdfef4636, 0xa133c501, 0xe9d3531c, 0xee353783 +}; +static const u32 s4[256] = { +0x9db30420, 0x1fb6e9de, 0xa7be7bef, 0xd273a298, 0x4a4f7bdb, 0x64ad8c57, 0x85510443, 0xfa020ed1, +0x7e287aff, 0xe60fb663, 0x095f35a1, 0x79ebf120, 0xfd059d43, 0x6497b7b1, 0xf3641f63, 0x241e4adf, +0x28147f5f, 0x4fa2b8cd, 0xc9430040, 0x0cc32220, 0xfdd30b30, 0xc0a5374f, 0x1d2d00d9, 0x24147b15, +0xee4d111a, 0x0fca5167, 0x71ff904c, 0x2d195ffe, 0x1a05645f, 0x0c13fefe, 0x081b08ca, 0x05170121, +0x80530100, 0xe83e5efe, 0xac9af4f8, 0x7fe72701, 0xd2b8ee5f, 0x06df4261, 0xbb9e9b8a, 0x7293ea25, +0xce84ffdf, 0xf5718801, 0x3dd64b04, 0xa26f263b, 0x7ed48400, 0x547eebe6, 0x446d4ca0, 0x6cf3d6f5, +0x2649abdf, 0xaea0c7f5, 0x36338cc1, 0x503f7e93, 0xd3772061, 0x11b638e1, 0x72500e03, 0xf80eb2bb, +0xabe0502e, 0xec8d77de, 0x57971e81, 0xe14f6746, 0xc9335400, 0x6920318f, 0x081dbb99, 0xffc304a5, +0x4d351805, 0x7f3d5ce3, 0xa6c866c6, 0x5d5bcca9, 0xdaec6fea, 0x9f926f91, 0x9f46222f, 0x3991467d, +0xa5bf6d8e, 0x1143c44f, 0x43958302, 0xd0214eeb, 0x022083b8, 0x3fb6180c, 0x18f8931e, 0x281658e6, +0x26486e3e, 0x8bd78a70, 0x7477e4c1, 0xb506e07c, 0xf32d0a25, 0x79098b02, 0xe4eabb81, 0x28123b23, +0x69dead38, 0x1574ca16, 0xdf871b62, 0x211c40b7, 0xa51a9ef9, 0x0014377b, 0x041e8ac8, 0x09114003, +0xbd59e4d2, 0xe3d156d5, 0x4fe876d5, 0x2f91a340, 0x557be8de, 0x00eae4a7, 0x0ce5c2ec, 0x4db4bba6, +0xe756bdff, 0xdd3369ac, 0xec17b035, 0x06572327, 0x99afc8b0, 0x56c8c391, 0x6b65811c, 0x5e146119, +0x6e85cb75, 0xbe07c002, 0xc2325577, 0x893ff4ec, 0x5bbfc92d, 0xd0ec3b25, 0xb7801ab7, 0x8d6d3b24, +0x20c763ef, 0xc366a5fc, 0x9c382880, 0x0ace3205, 0xaac9548a, 0xeca1d7c7, 0x041afa32, 0x1d16625a, +0x6701902c, 0x9b757a54, 0x31d477f7, 0x9126b031, 0x36cc6fdb, 0xc70b8b46, 0xd9e66a48, 0x56e55a79, +0x026a4ceb, 0x52437eff, 0x2f8f76b4, 0x0df980a5, 0x8674cde3, 0xedda04eb, 0x17a9be04, 0x2c18f4df, +0xb7747f9d, 0xab2af7b4, 0xefc34d20, 0x2e096b7c, 0x1741a254, 0xe5b6a035, 0x213d42f6, 0x2c1c7c26, +0x61c2f50f, 0x6552daf9, 0xd2c231f8, 0x25130f69, 0xd8167fa2, 0x0418f2c8, 0x001a96a6, 0x0d1526ab, +0x63315c21, 0x5e0a72ec, 0x49bafefd, 0x187908d9, 0x8d0dbd86, 0x311170a7, 0x3e9b640c, 0xcc3e10d7, +0xd5cad3b6, 0x0caec388, 0xf73001e1, 0x6c728aff, 0x71eae2a1, 0x1f9af36e, 0xcfcbd12f, 0xc1de8417, +0xac07be6b, 0xcb44a1d8, 0x8b9b0f56, 0x013988c3, 0xb1c52fca, 0xb4be31cd, 0xd8782806, 0x12a3a4e2, +0x6f7de532, 0x58fd7eb6, 0xd01ee900, 0x24adffc2, 0xf4990fc5, 0x9711aac5, 0x001d7b95, 0x82e5e7d2, +0x109873f6, 0x00613096, 0xc32d9521, 0xada121ff, 0x29908415, 0x7fbb977f, 0xaf9eb3db, 0x29c9ed2a, +0x5ce2a465, 0xa730f32c, 0xd0aa3fe8, 0x8a5cc091, 0xd49e2ce7, 0x0ce454a9, 0xd60acd86, 0x015f1919, +0x77079103, 0xdea03af6, 0x78a8565e, 0xdee356df, 0x21f05cbe, 0x8b75e387, 0xb3c50651, 0xb8a5c3ef, +0xd8eeb6d2, 0xe523be77, 0xc2154529, 0x2f69efdf, 0xafe67afb, 0xf470c4b2, 0xf3e0eb5b, 0xd6cc9876, +0x39e4460c, 0x1fda8538, 0x1987832f, 0xca007367, 0xa99144f8, 0x296b299e, 0x492fc295, 0x9266beab, +0xb5676e69, 0x9bd3ddda, 0xdf7e052f, 0xdb25701c, 0x1b5e51ee, 0xf65324e6, 0x6afce36c, 0x0316cc04, +0x8644213e, 0xb7dc59d0, 0x7965291f, 0xccd6fd43, 0x41823979, 0x932bcdf6, 0xb657c34d, 0x4edfd282, +0x7ae5290c, 0x3cb9536b, 0x851e20fe, 0x9833557e, 0x13ecf0b0, 0xd3ffb372, 0x3f85c5c1, 0x0aef7ed2 +}; +static const u32 s5[256] = { +0x7ec90c04, 0x2c6e74b9, 0x9b0e66df, 0xa6337911, 0xb86a7fff, 0x1dd358f5, 0x44dd9d44, 0x1731167f, +0x08fbf1fa, 0xe7f511cc, 0xd2051b00, 0x735aba00, 0x2ab722d8, 0x386381cb, 0xacf6243a, 0x69befd7a, +0xe6a2e77f, 0xf0c720cd, 0xc4494816, 0xccf5c180, 0x38851640, 0x15b0a848, 0xe68b18cb, 0x4caadeff, +0x5f480a01, 0x0412b2aa, 0x259814fc, 0x41d0efe2, 0x4e40b48d, 0x248eb6fb, 0x8dba1cfe, 0x41a99b02, +0x1a550a04, 0xba8f65cb, 0x7251f4e7, 0x95a51725, 0xc106ecd7, 0x97a5980a, 0xc539b9aa, 0x4d79fe6a, +0xf2f3f763, 0x68af8040, 0xed0c9e56, 0x11b4958b, 0xe1eb5a88, 0x8709e6b0, 0xd7e07156, 0x4e29fea7, +0x6366e52d, 0x02d1c000, 0xc4ac8e05, 0x9377f571, 0x0c05372a, 0x578535f2, 0x2261be02, 0xd642a0c9, +0xdf13a280, 0x74b55bd2, 0x682199c0, 0xd421e5ec, 0x53fb3ce8, 0xc8adedb3, 0x28a87fc9, 0x3d959981, +0x5c1ff900, 0xfe38d399, 0x0c4eff0b, 0x062407ea, 0xaa2f4fb1, 0x4fb96976, 0x90c79505, 0xb0a8a774, +0xef55a1ff, 0xe59ca2c2, 0xa6b62d27, 0xe66a4263, 0xdf65001f, 0x0ec50966, 0xdfdd55bc, 0x29de0655, +0x911e739a, 0x17af8975, 0x32c7911c, 0x89f89468, 0x0d01e980, 0x524755f4, 0x03b63cc9, 0x0cc844b2, +0xbcf3f0aa, 0x87ac36e9, 0xe53a7426, 0x01b3d82b, 0x1a9e7449, 0x64ee2d7e, 0xcddbb1da, 0x01c94910, +0xb868bf80, 0x0d26f3fd, 0x9342ede7, 0x04a5c284, 0x636737b6, 0x50f5b616, 0xf24766e3, 0x8eca36c1, +0x136e05db, 0xfef18391, 0xfb887a37, 0xd6e7f7d4, 0xc7fb7dc9, 0x3063fcdf, 0xb6f589de, 0xec2941da, +0x26e46695, 0xb7566419, 0xf654efc5, 0xd08d58b7, 0x48925401, 0xc1bacb7f, 0xe5ff550f, 0xb6083049, +0x5bb5d0e8, 0x87d72e5a, 0xab6a6ee1, 0x223a66ce, 0xc62bf3cd, 0x9e0885f9, 0x68cb3e47, 0x086c010f, +0xa21de820, 0xd18b69de, 0xf3f65777, 0xfa02c3f6, 0x407edac3, 0xcbb3d550, 0x1793084d, 0xb0d70eba, +0x0ab378d5, 0xd951fb0c, 0xded7da56, 0x4124bbe4, 0x94ca0b56, 0x0f5755d1, 0xe0e1e56e, 0x6184b5be, +0x580a249f, 0x94f74bc0, 0xe327888e, 0x9f7b5561, 0xc3dc0280, 0x05687715, 0x646c6bd7, 0x44904db3, +0x66b4f0a3, 0xc0f1648a, 0x697ed5af, 0x49e92ff6, 0x309e374f, 0x2cb6356a, 0x85808573, 0x4991f840, +0x76f0ae02, 0x083be84d, 0x28421c9a, 0x44489406, 0x736e4cb8, 0xc1092910, 0x8bc95fc6, 0x7d869cf4, +0x134f616f, 0x2e77118d, 0xb31b2be1, 0xaa90b472, 0x3ca5d717, 0x7d161bba, 0x9cad9010, 0xaf462ba2, +0x9fe459d2, 0x45d34559, 0xd9f2da13, 0xdbc65487, 0xf3e4f94e, 0x176d486f, 0x097c13ea, 0x631da5c7, +0x445f7382, 0x175683f4, 0xcdc66a97, 0x70be0288, 0xb3cdcf72, 0x6e5dd2f3, 0x20936079, 0x459b80a5, +0xbe60e2db, 0xa9c23101, 0xeba5315c, 0x224e42f2, 0x1c5c1572, 0xf6721b2c, 0x1ad2fff3, 0x8c25404e, +0x324ed72f, 0x4067b7fd, 0x0523138e, 0x5ca3bc78, 0xdc0fd66e, 0x75922283, 0x784d6b17, 0x58ebb16e, +0x44094f85, 0x3f481d87, 0xfcfeae7b, 0x77b5ff76, 0x8c2302bf, 0xaaf47556, 0x5f46b02a, 0x2b092801, +0x3d38f5f7, 0x0ca81f36, 0x52af4a8a, 0x66d5e7c0, 0xdf3b0874, 0x95055110, 0x1b5ad7a8, 0xf61ed5ad, +0x6cf6e479, 0x20758184, 0xd0cefa65, 0x88f7be58, 0x4a046826, 0x0ff6f8f3, 0xa09c7f70, 0x5346aba0, +0x5ce96c28, 0xe176eda3, 0x6bac307f, 0x376829d2, 0x85360fa9, 0x17e3fe2a, 0x24b79767, 0xf5a96b20, +0xd6cd2595, 0x68ff1ebf, 0x7555442c, 0xf19f06be, 0xf9e0659a, 0xeeb9491d, 0x34010718, 0xbb30cab8, +0xe822fe15, 0x88570983, 0x750e6249, 0xda627e55, 0x5e76ffa8, 0xb1534546, 0x6d47de08, 0xefe9e7d4 +}; +static const u32 s6[256] = { +0xf6fa8f9d, 0x2cac6ce1, 0x4ca34867, 0xe2337f7c, 0x95db08e7, 0x016843b4, 0xeced5cbc, 0x325553ac, +0xbf9f0960, 0xdfa1e2ed, 0x83f0579d, 0x63ed86b9, 0x1ab6a6b8, 0xde5ebe39, 0xf38ff732, 0x8989b138, +0x33f14961, 0xc01937bd, 0xf506c6da, 0xe4625e7e, 0xa308ea99, 0x4e23e33c, 0x79cbd7cc, 0x48a14367, +0xa3149619, 0xfec94bd5, 0xa114174a, 0xeaa01866, 0xa084db2d, 0x09a8486f, 0xa888614a, 0x2900af98, +0x01665991, 0xe1992863, 0xc8f30c60, 0x2e78ef3c, 0xd0d51932, 0xcf0fec14, 0xf7ca07d2, 0xd0a82072, +0xfd41197e, 0x9305a6b0, 0xe86be3da, 0x74bed3cd, 0x372da53c, 0x4c7f4448, 0xdab5d440, 0x6dba0ec3, +0x083919a7, 0x9fbaeed9, 0x49dbcfb0, 0x4e670c53, 0x5c3d9c01, 0x64bdb941, 0x2c0e636a, 0xba7dd9cd, +0xea6f7388, 0xe70bc762, 0x35f29adb, 0x5c4cdd8d, 0xf0d48d8c, 0xb88153e2, 0x08a19866, 0x1ae2eac8, +0x284caf89, 0xaa928223, 0x9334be53, 0x3b3a21bf, 0x16434be3, 0x9aea3906, 0xefe8c36e, 0xf890cdd9, +0x80226dae, 0xc340a4a3, 0xdf7e9c09, 0xa694a807, 0x5b7c5ecc, 0x221db3a6, 0x9a69a02f, 0x68818a54, +0xceb2296f, 0x53c0843a, 0xfe893655, 0x25bfe68a, 0xb4628abc, 0xcf222ebf, 0x25ac6f48, 0xa9a99387, +0x53bddb65, 0xe76ffbe7, 0xe967fd78, 0x0ba93563, 0x8e342bc1, 0xe8a11be9, 0x4980740d, 0xc8087dfc, +0x8de4bf99, 0xa11101a0, 0x7fd37975, 0xda5a26c0, 0xe81f994f, 0x9528cd89, 0xfd339fed, 0xb87834bf, +0x5f04456d, 0x22258698, 0xc9c4c83b, 0x2dc156be, 0x4f628daa, 0x57f55ec5, 0xe2220abe, 0xd2916ebf, +0x4ec75b95, 0x24f2c3c0, 0x42d15d99, 0xcd0d7fa0, 0x7b6e27ff, 0xa8dc8af0, 0x7345c106, 0xf41e232f, +0x35162386, 0xe6ea8926, 0x3333b094, 0x157ec6f2, 0x372b74af, 0x692573e4, 0xe9a9d848, 0xf3160289, +0x3a62ef1d, 0xa787e238, 0xf3a5f676, 0x74364853, 0x20951063, 0x4576698d, 0xb6fad407, 0x592af950, +0x36f73523, 0x4cfb6e87, 0x7da4cec0, 0x6c152daa, 0xcb0396a8, 0xc50dfe5d, 0xfcd707ab, 0x0921c42f, +0x89dff0bb, 0x5fe2be78, 0x448f4f33, 0x754613c9, 0x2b05d08d, 0x48b9d585, 0xdc049441, 0xc8098f9b, +0x7dede786, 0xc39a3373, 0x42410005, 0x6a091751, 0x0ef3c8a6, 0x890072d6, 0x28207682, 0xa9a9f7be, +0xbf32679d, 0xd45b5b75, 0xb353fd00, 0xcbb0e358, 0x830f220a, 0x1f8fb214, 0xd372cf08, 0xcc3c4a13, +0x8cf63166, 0x061c87be, 0x88c98f88, 0x6062e397, 0x47cf8e7a, 0xb6c85283, 0x3cc2acfb, 0x3fc06976, +0x4e8f0252, 0x64d8314d, 0xda3870e3, 0x1e665459, 0xc10908f0, 0x513021a5, 0x6c5b68b7, 0x822f8aa0, +0x3007cd3e, 0x74719eef, 0xdc872681, 0x073340d4, 0x7e432fd9, 0x0c5ec241, 0x8809286c, 0xf592d891, +0x08a930f6, 0x957ef305, 0xb7fbffbd, 0xc266e96f, 0x6fe4ac98, 0xb173ecc0, 0xbc60b42a, 0x953498da, +0xfba1ae12, 0x2d4bd736, 0x0f25faab, 0xa4f3fceb, 0xe2969123, 0x257f0c3d, 0x9348af49, 0x361400bc, +0xe8816f4a, 0x3814f200, 0xa3f94043, 0x9c7a54c2, 0xbc704f57, 0xda41e7f9, 0xc25ad33a, 0x54f4a084, +0xb17f5505, 0x59357cbe, 0xedbd15c8, 0x7f97c5ab, 0xba5ac7b5, 0xb6f6deaf, 0x3a479c3a, 0x5302da25, +0x653d7e6a, 0x54268d49, 0x51a477ea, 0x5017d55b, 0xd7d25d88, 0x44136c76, 0x0404a8c8, 0xb8e5a121, +0xb81a928a, 0x60ed5869, 0x97c55b96, 0xeaec991b, 0x29935913, 0x01fdb7f1, 0x088e8dfa, 0x9ab6f6f5, +0x3b4cbf9f, 0x4a5de3ab, 0xe6051d35, 0xa0e1d855, 0xd36b4cf1, 0xf544edeb, 0xb0e93524, 0xbebb8fbd, +0xa2d762cf, 0x49c92f54, 0x38b5f331, 0x7128a454, 0x48392905, 0xa65b1db8, 0x851c97bd, 0xd675cf2f +}; +static const u32 s7[256] = { +0x85e04019, 0x332bf567, 0x662dbfff, 0xcfc65693, 0x2a8d7f6f, 0xab9bc912, 0xde6008a1, 0x2028da1f, +0x0227bce7, 0x4d642916, 0x18fac300, 0x50f18b82, 0x2cb2cb11, 0xb232e75c, 0x4b3695f2, 0xb28707de, +0xa05fbcf6, 0xcd4181e9, 0xe150210c, 0xe24ef1bd, 0xb168c381, 0xfde4e789, 0x5c79b0d8, 0x1e8bfd43, +0x4d495001, 0x38be4341, 0x913cee1d, 0x92a79c3f, 0x089766be, 0xbaeeadf4, 0x1286becf, 0xb6eacb19, +0x2660c200, 0x7565bde4, 0x64241f7a, 0x8248dca9, 0xc3b3ad66, 0x28136086, 0x0bd8dfa8, 0x356d1cf2, +0x107789be, 0xb3b2e9ce, 0x0502aa8f, 0x0bc0351e, 0x166bf52a, 0xeb12ff82, 0xe3486911, 0xd34d7516, +0x4e7b3aff, 0x5f43671b, 0x9cf6e037, 0x4981ac83, 0x334266ce, 0x8c9341b7, 0xd0d854c0, 0xcb3a6c88, +0x47bc2829, 0x4725ba37, 0xa66ad22b, 0x7ad61f1e, 0x0c5cbafa, 0x4437f107, 0xb6e79962, 0x42d2d816, +0x0a961288, 0xe1a5c06e, 0x13749e67, 0x72fc081a, 0xb1d139f7, 0xf9583745, 0xcf19df58, 0xbec3f756, +0xc06eba30, 0x07211b24, 0x45c28829, 0xc95e317f, 0xbc8ec511, 0x38bc46e9, 0xc6e6fa14, 0xbae8584a, +0xad4ebc46, 0x468f508b, 0x7829435f, 0xf124183b, 0x821dba9f, 0xaff60ff4, 0xea2c4e6d, 0x16e39264, +0x92544a8b, 0x009b4fc3, 0xaba68ced, 0x9ac96f78, 0x06a5b79a, 0xb2856e6e, 0x1aec3ca9, 0xbe838688, +0x0e0804e9, 0x55f1be56, 0xe7e5363b, 0xb3a1f25d, 0xf7debb85, 0x61fe033c, 0x16746233, 0x3c034c28, +0xda6d0c74, 0x79aac56c, 0x3ce4e1ad, 0x51f0c802, 0x98f8f35a, 0x1626a49f, 0xeed82b29, 0x1d382fe3, +0x0c4fb99a, 0xbb325778, 0x3ec6d97b, 0x6e77a6a9, 0xcb658b5c, 0xd45230c7, 0x2bd1408b, 0x60c03eb7, +0xb9068d78, 0xa33754f4, 0xf430c87d, 0xc8a71302, 0xb96d8c32, 0xebd4e7be, 0xbe8b9d2d, 0x7979fb06, +0xe7225308, 0x8b75cf77, 0x11ef8da4, 0xe083c858, 0x8d6b786f, 0x5a6317a6, 0xfa5cf7a0, 0x5dda0033, +0xf28ebfb0, 0xf5b9c310, 0xa0eac280, 0x08b9767a, 0xa3d9d2b0, 0x79d34217, 0x021a718d, 0x9ac6336a, +0x2711fd60, 0x438050e3, 0x069908a8, 0x3d7fedc4, 0x826d2bef, 0x4eeb8476, 0x488dcf25, 0x36c9d566, +0x28e74e41, 0xc2610aca, 0x3d49a9cf, 0xbae3b9df, 0xb65f8de6, 0x92aeaf64, 0x3ac7d5e6, 0x9ea80509, +0xf22b017d, 0xa4173f70, 0xdd1e16c3, 0x15e0d7f9, 0x50b1b887, 0x2b9f4fd5, 0x625aba82, 0x6a017962, +0x2ec01b9c, 0x15488aa9, 0xd716e740, 0x40055a2c, 0x93d29a22, 0xe32dbf9a, 0x058745b9, 0x3453dc1e, +0xd699296e, 0x496cff6f, 0x1c9f4986, 0xdfe2ed07, 0xb87242d1, 0x19de7eae, 0x053e561a, 0x15ad6f8c, +0x66626c1c, 0x7154c24c, 0xea082b2a, 0x93eb2939, 0x17dcb0f0, 0x58d4f2ae, 0x9ea294fb, 0x52cf564c, +0x9883fe66, 0x2ec40581, 0x763953c3, 0x01d6692e, 0xd3a0c108, 0xa1e7160e, 0xe4f2dfa6, 0x693ed285, +0x74904698, 0x4c2b0edd, 0x4f757656, 0x5d393378, 0xa132234f, 0x3d321c5d, 0xc3f5e194, 0x4b269301, +0xc79f022f, 0x3c997e7e, 0x5e4f9504, 0x3ffafbbd, 0x76f7ad0e, 0x296693f4, 0x3d1fce6f, 0xc61e45be, +0xd3b5ab34, 0xf72bf9b7, 0x1b0434c0, 0x4e72b567, 0x5592a33d, 0xb5229301, 0xcfd2a87f, 0x60aeb767, +0x1814386b, 0x30bcc33d, 0x38a0c07d, 0xfd1606f2, 0xc363519b, 0x589dd390, 0x5479f8e6, 0x1cb8d647, +0x97fd61a9, 0xea7759f4, 0x2d57539d, 0x569a58cf, 0xe84e63ad, 0x462e1b78, 0x6580f87e, 0xf3817914, +0x91da55f4, 0x40a230f3, 0xd1988f35, 0xb6e318d2, 0x3ffa50bc, 0x3d40f021, 0xc3c0bdae, 0x4958c24c, +0x518f36b2, 0x84b1d370, 0x0fedce83, 0x878ddada, 0xf2a279c7, 0x94e01be8, 0x90716f4b, 0x954b8aa3 +}; +static const u32 s8[256] = { +0xe216300d, 0xbbddfffc, 0xa7ebdabd, 0x35648095, 0x7789f8b7, 0xe6c1121b, 0x0e241600, 0x052ce8b5, +0x11a9cfb0, 0xe5952f11, 0xece7990a, 0x9386d174, 0x2a42931c, 0x76e38111, 0xb12def3a, 0x37ddddfc, +0xde9adeb1, 0x0a0cc32c, 0xbe197029, 0x84a00940, 0xbb243a0f, 0xb4d137cf, 0xb44e79f0, 0x049eedfd, +0x0b15a15d, 0x480d3168, 0x8bbbde5a, 0x669ded42, 0xc7ece831, 0x3f8f95e7, 0x72df191b, 0x7580330d, +0x94074251, 0x5c7dcdfa, 0xabbe6d63, 0xaa402164, 0xb301d40a, 0x02e7d1ca, 0x53571dae, 0x7a3182a2, +0x12a8ddec, 0xfdaa335d, 0x176f43e8, 0x71fb46d4, 0x38129022, 0xce949ad4, 0xb84769ad, 0x965bd862, +0x82f3d055, 0x66fb9767, 0x15b80b4e, 0x1d5b47a0, 0x4cfde06f, 0xc28ec4b8, 0x57e8726e, 0x647a78fc, +0x99865d44, 0x608bd593, 0x6c200e03, 0x39dc5ff6, 0x5d0b00a3, 0xae63aff2, 0x7e8bd632, 0x70108c0c, +0xbbd35049, 0x2998df04, 0x980cf42a, 0x9b6df491, 0x9e7edd53, 0x06918548, 0x58cb7e07, 0x3b74ef2e, +0x522fffb1, 0xd24708cc, 0x1c7e27cd, 0xa4eb215b, 0x3cf1d2e2, 0x19b47a38, 0x424f7618, 0x35856039, +0x9d17dee7, 0x27eb35e6, 0xc9aff67b, 0x36baf5b8, 0x09c467cd, 0xc18910b1, 0xe11dbf7b, 0x06cd1af8, +0x7170c608, 0x2d5e3354, 0xd4de495a, 0x64c6d006, 0xbcc0c62c, 0x3dd00db3, 0x708f8f34, 0x77d51b42, +0x264f620f, 0x24b8d2bf, 0x15c1b79e, 0x46a52564, 0xf8d7e54e, 0x3e378160, 0x7895cda5, 0x859c15a5, +0xe6459788, 0xc37bc75f, 0xdb07ba0c, 0x0676a3ab, 0x7f229b1e, 0x31842e7b, 0x24259fd7, 0xf8bef472, +0x835ffcb8, 0x6df4c1f2, 0x96f5b195, 0xfd0af0fc, 0xb0fe134c, 0xe2506d3d, 0x4f9b12ea, 0xf215f225, +0xa223736f, 0x9fb4c428, 0x25d04979, 0x34c713f8, 0xc4618187, 0xea7a6e98, 0x7cd16efc, 0x1436876c, +0xf1544107, 0xbedeee14, 0x56e9af27, 0xa04aa441, 0x3cf7c899, 0x92ecbae6, 0xdd67016d, 0x151682eb, +0xa842eedf, 0xfdba60b4, 0xf1907b75, 0x20e3030f, 0x24d8c29e, 0xe139673b, 0xefa63fb8, 0x71873054, +0xb6f2cf3b, 0x9f326442, 0xcb15a4cc, 0xb01a4504, 0xf1e47d8d, 0x844a1be5, 0xbae7dfdc, 0x42cbda70, +0xcd7dae0a, 0x57e85b7a, 0xd53f5af6, 0x20cf4d8c, 0xcea4d428, 0x79d130a4, 0x3486ebfb, 0x33d3cddc, +0x77853b53, 0x37effcb5, 0xc5068778, 0xe580b3e6, 0x4e68b8f4, 0xc5c8b37e, 0x0d809ea2, 0x398feb7c, +0x132a4f94, 0x43b7950e, 0x2fee7d1c, 0x223613bd, 0xdd06caa2, 0x37df932b, 0xc4248289, 0xacf3ebc3, +0x5715f6b7, 0xef3478dd, 0xf267616f, 0xc148cbe4, 0x9052815e, 0x5e410fab, 0xb48a2465, 0x2eda7fa4, +0xe87b40e4, 0xe98ea084, 0x5889e9e1, 0xefd390fc, 0xdd07d35b, 0xdb485694, 0x38d7e5b2, 0x57720101, +0x730edebc, 0x5b643113, 0x94917e4f, 0x503c2fba, 0x646f1282, 0x7523d24a, 0xe0779695, 0xf9c17a8f, +0x7a5b2121, 0xd187b896, 0x29263a4d, 0xba510cdf, 0x81f47c9f, 0xad1163ed, 0xea7b5965, 0x1a00726e, +0x11403092, 0x00da6d77, 0x4a0cdd61, 0xad1f4603, 0x605bdfb0, 0x9eedc364, 0x22ebe6a8, 0xcee7d28a, +0xa0e736a0, 0x5564a6b9, 0x10853209, 0xc7eb8f37, 0x2de705ca, 0x8951570f, 0xdf09822b, 0xbd691a6c, +0xaa12e4f2, 0x87451c0f, 0xe0f6a27a, 0x3ada4819, 0x4cf1764f, 0x0d771c2b, 0x67cdb156, 0x350d8384, +0x5938fa0f, 0x42399ef3, 0x36997b07, 0x0e84093d, 0x4aa93e61, 0x8360d87b, 0x1fa98b0c, 0x1149382c, +0xe97625a5, 0x0614d1b7, 0x0e25244b, 0x0c768347, 0x589e8d82, 0x0d2059d1, 0xa466bb1e, 0xf8da0a82, +0x04f19130, 0xba6e4ec0, 0x99265164, 0x1ee7230d, 0x50b2ad80, 0xeaee6801, 0x8db2a283, 0xea8bf59e +}; + + +#if defined(__GNUC__) && defined(__i386__) +static inline u32 +rol(int n, u32 x) +{ + __asm__("roll %%cl,%0" + :"=r" (x) + :"0" (x),"c" (n)); + return x; +} +#else + #define rol(n,x) ( ((x) << (n)) | ((x) >> (32-(n))) ) +#endif + +#define F1(D,m,r) ( (I = ((m) + (D))), (I=rol((r),I)), \ + (((s1[I >> 24] ^ s2[(I>>16)&0xff]) - s3[(I>>8)&0xff]) + s4[I&0xff]) ) +#define F2(D,m,r) ( (I = ((m) ^ (D))), (I=rol((r),I)), \ + (((s1[I >> 24] - s2[(I>>16)&0xff]) + s3[(I>>8)&0xff]) ^ s4[I&0xff]) ) +#define F3(D,m,r) ( (I = ((m) - (D))), (I=rol((r),I)), \ + (((s1[I >> 24] + s2[(I>>16)&0xff]) ^ s3[(I>>8)&0xff]) - s4[I&0xff]) ) + +static void +burn_stack (int bytes) +{ + char buf[64]; + + memset (buf, 0, sizeof buf); + bytes -= sizeof buf; + if (bytes > 0) + burn_stack (bytes); +} + + +static void +do_encrypt_block( CAST5_context *c, byte *outbuf, byte *inbuf ) +{ + u32 l, r, t; + u32 I; /* used by the Fx macros */ + u32 *Km; + byte *Kr; + + Km = c->Km; + Kr = c->Kr; + + /* (L0,R0) <-- (m1...m64). (Split the plaintext into left and + * right 32-bit halves L0 = m1...m32 and R0 = m33...m64.) + */ + l = inbuf[0] << 24 | inbuf[1] << 16 | inbuf[2] << 8 | inbuf[3]; + r = inbuf[4] << 24 | inbuf[5] << 16 | inbuf[6] << 8 | inbuf[7]; + + /* (16 rounds) for i from 1 to 16, compute Li and Ri as follows: + * Li = Ri-1; + * Ri = Li-1 ^ f(Ri-1,Kmi,Kri), where f is defined in Section 2.2 + * Rounds 1, 4, 7, 10, 13, and 16 use f function Type 1. + * Rounds 2, 5, 8, 11, and 14 use f function Type 2. + * Rounds 3, 6, 9, 12, and 15 use f function Type 3. + */ + + t = l; l = r; r = t ^ F1(r, Km[ 0], Kr[ 0]); + t = l; l = r; r = t ^ F2(r, Km[ 1], Kr[ 1]); + t = l; l = r; r = t ^ F3(r, Km[ 2], Kr[ 2]); + t = l; l = r; r = t ^ F1(r, Km[ 3], Kr[ 3]); + t = l; l = r; r = t ^ F2(r, Km[ 4], Kr[ 4]); + t = l; l = r; r = t ^ F3(r, Km[ 5], Kr[ 5]); + t = l; l = r; r = t ^ F1(r, Km[ 6], Kr[ 6]); + t = l; l = r; r = t ^ F2(r, Km[ 7], Kr[ 7]); + t = l; l = r; r = t ^ F3(r, Km[ 8], Kr[ 8]); + t = l; l = r; r = t ^ F1(r, Km[ 9], Kr[ 9]); + t = l; l = r; r = t ^ F2(r, Km[10], Kr[10]); + t = l; l = r; r = t ^ F3(r, Km[11], Kr[11]); + t = l; l = r; r = t ^ F1(r, Km[12], Kr[12]); + t = l; l = r; r = t ^ F2(r, Km[13], Kr[13]); + t = l; l = r; r = t ^ F3(r, Km[14], Kr[14]); + t = l; l = r; r = t ^ F1(r, Km[15], Kr[15]); + + /* c1...c64 <-- (R16,L16). (Exchange final blocks L16, R16 and + * concatenate to form the ciphertext.) */ + outbuf[0] = (r >> 24) & 0xff; + outbuf[1] = (r >> 16) & 0xff; + outbuf[2] = (r >> 8) & 0xff; + outbuf[3] = r & 0xff; + outbuf[4] = (l >> 24) & 0xff; + outbuf[5] = (l >> 16) & 0xff; + outbuf[6] = (l >> 8) & 0xff; + outbuf[7] = l & 0xff; +} + +static void +encrypt_block( CAST5_context *c, byte *outbuf, byte *inbuf ) +{ + do_encrypt_block (c, outbuf, inbuf); + burn_stack (20+4*sizeof(void*)); +} + +static void +do_decrypt_block (CAST5_context *c, byte *outbuf, byte *inbuf ) +{ + u32 l, r, t; + u32 I; + u32 *Km; + byte *Kr; + + Km = c->Km; + Kr = c->Kr; + + l = inbuf[0] << 24 | inbuf[1] << 16 | inbuf[2] << 8 | inbuf[3]; + r = inbuf[4] << 24 | inbuf[5] << 16 | inbuf[6] << 8 | inbuf[7]; + + t = l; l = r; r = t ^ F1(r, Km[15], Kr[15]); + t = l; l = r; r = t ^ F3(r, Km[14], Kr[14]); + t = l; l = r; r = t ^ F2(r, Km[13], Kr[13]); + t = l; l = r; r = t ^ F1(r, Km[12], Kr[12]); + t = l; l = r; r = t ^ F3(r, Km[11], Kr[11]); + t = l; l = r; r = t ^ F2(r, Km[10], Kr[10]); + t = l; l = r; r = t ^ F1(r, Km[ 9], Kr[ 9]); + t = l; l = r; r = t ^ F3(r, Km[ 8], Kr[ 8]); + t = l; l = r; r = t ^ F2(r, Km[ 7], Kr[ 7]); + t = l; l = r; r = t ^ F1(r, Km[ 6], Kr[ 6]); + t = l; l = r; r = t ^ F3(r, Km[ 5], Kr[ 5]); + t = l; l = r; r = t ^ F2(r, Km[ 4], Kr[ 4]); + t = l; l = r; r = t ^ F1(r, Km[ 3], Kr[ 3]); + t = l; l = r; r = t ^ F3(r, Km[ 2], Kr[ 2]); + t = l; l = r; r = t ^ F2(r, Km[ 1], Kr[ 1]); + t = l; l = r; r = t ^ F1(r, Km[ 0], Kr[ 0]); + + outbuf[0] = (r >> 24) & 0xff; + outbuf[1] = (r >> 16) & 0xff; + outbuf[2] = (r >> 8) & 0xff; + outbuf[3] = r & 0xff; + outbuf[4] = (l >> 24) & 0xff; + outbuf[5] = (l >> 16) & 0xff; + outbuf[6] = (l >> 8) & 0xff; + outbuf[7] = l & 0xff; +} + +static void +decrypt_block( CAST5_context *c, byte *outbuf, byte *inbuf ) +{ + do_decrypt_block (c, outbuf, inbuf); + burn_stack (20+4*sizeof(void*)); +} + + +static const char* +selftest(void) +{ + CAST5_context c; + byte key[16] = { 0x01, 0x23, 0x45, 0x67, 0x12, 0x34, 0x56, 0x78, + 0x23, 0x45, 0x67, 0x89, 0x34, 0x56, 0x78, 0x9A }; + byte plain[8] = { 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF }; + byte cipher[8]= { 0x23, 0x8B, 0x4F, 0xE5, 0x84, 0x7E, 0x44, 0xB2 }; + byte buffer[8]; + + cast_setkey( &c, key, 16 ); + encrypt_block( &c, buffer, plain ); + if( memcmp( buffer, cipher, 8 ) ) + return "1"; + decrypt_block( &c, buffer, buffer ); + if( memcmp( buffer, plain, 8 ) ) + return "2"; + + #if 0 /* full maintenance test */ + { + int i; + byte a0[16] = { 0x01,0x23,0x45,0x67,0x12,0x34,0x56,0x78, + 0x23,0x45,0x67,0x89,0x34,0x56,0x78,0x9A }; + byte b0[16] = { 0x01,0x23,0x45,0x67,0x12,0x34,0x56,0x78, + 0x23,0x45,0x67,0x89,0x34,0x56,0x78,0x9A }; + byte a1[16] = { 0xEE,0xA9,0xD0,0xA2,0x49,0xFD,0x3B,0xA6, + 0xB3,0x43,0x6F,0xB8,0x9D,0x6D,0xCA,0x92 }; + byte b1[16] = { 0xB2,0xC9,0x5E,0xB0,0x0C,0x31,0xAD,0x71, + 0x80,0xAC,0x05,0xB8,0xE8,0x3D,0x69,0x6E }; + + for(i=0; i < 1000000; i++ ) { + cast_setkey( &c, b0, 16 ); + encrypt_block( &c, a0, a0 ); + encrypt_block( &c, a0+8, a0+8 ); + cast_setkey( &c, a0, 16 ); + encrypt_block( &c, b0, b0 ); + encrypt_block( &c, b0+8, b0+8 ); + } + if( memcmp( a0, a1, 16 ) || memcmp( b0, b1, 16 ) ) + return "3"; + + } + #endif + return NULL; +} + + +static void +key_schedule( u32 *x, u32 *z, u32 *k ) +{ + + #define xi(i) ((x[(i)/4] >> (8*(3-((i)%4)))) & 0xff) + #define zi(i) ((z[(i)/4] >> (8*(3-((i)%4)))) & 0xff) + + z[0] = x[0] ^ s5[xi(13)]^s6[xi(15)]^s7[xi(12)]^s8[xi(14)]^s7[xi( 8)]; + z[1] = x[2] ^ s5[zi( 0)]^s6[zi( 2)]^s7[zi( 1)]^s8[zi( 3)]^s8[xi(10)]; + z[2] = x[3] ^ s5[zi( 7)]^s6[zi( 6)]^s7[zi( 5)]^s8[zi( 4)]^s5[xi( 9)]; + z[3] = x[1] ^ s5[zi(10)]^s6[zi( 9)]^s7[zi(11)]^s8[zi( 8)]^s6[xi(11)]; + k[0] = s5[zi( 8)]^s6[zi( 9)]^s7[zi( 7)]^s8[zi( 6)]^s5[zi( 2)]; + k[1] = s5[zi(10)]^s6[zi(11)]^s7[zi( 5)]^s8[zi( 4)]^s6[zi( 6)]; + k[2] = s5[zi(12)]^s6[zi(13)]^s7[zi( 3)]^s8[zi( 2)]^s7[zi( 9)]; + k[3] = s5[zi(14)]^s6[zi(15)]^s7[zi( 1)]^s8[zi( 0)]^s8[zi(12)]; + + x[0] = z[2] ^ s5[zi( 5)]^s6[zi( 7)]^s7[zi( 4)]^s8[zi( 6)]^s7[zi( 0)]; + x[1] = z[0] ^ s5[xi( 0)]^s6[xi( 2)]^s7[xi( 1)]^s8[xi( 3)]^s8[zi( 2)]; + x[2] = z[1] ^ s5[xi( 7)]^s6[xi( 6)]^s7[xi( 5)]^s8[xi( 4)]^s5[zi( 1)]; + x[3] = z[3] ^ s5[xi(10)]^s6[xi( 9)]^s7[xi(11)]^s8[xi( 8)]^s6[zi( 3)]; + k[4] = s5[xi( 3)]^s6[xi( 2)]^s7[xi(12)]^s8[xi(13)]^s5[xi( 8)]; + k[5] = s5[xi( 1)]^s6[xi( 0)]^s7[xi(14)]^s8[xi(15)]^s6[xi(13)]; + k[6] = s5[xi( 7)]^s6[xi( 6)]^s7[xi( 8)]^s8[xi( 9)]^s7[xi( 3)]; + k[7] = s5[xi( 5)]^s6[xi( 4)]^s7[xi(10)]^s8[xi(11)]^s8[xi( 7)]; + + z[0] = x[0] ^ s5[xi(13)]^s6[xi(15)]^s7[xi(12)]^s8[xi(14)]^s7[xi( 8)]; + z[1] = x[2] ^ s5[zi( 0)]^s6[zi( 2)]^s7[zi( 1)]^s8[zi( 3)]^s8[xi(10)]; + z[2] = x[3] ^ s5[zi( 7)]^s6[zi( 6)]^s7[zi( 5)]^s8[zi( 4)]^s5[xi( 9)]; + z[3] = x[1] ^ s5[zi(10)]^s6[zi( 9)]^s7[zi(11)]^s8[zi( 8)]^s6[xi(11)]; + k[8] = s5[zi( 3)]^s6[zi( 2)]^s7[zi(12)]^s8[zi(13)]^s5[zi( 9)]; + k[9] = s5[zi( 1)]^s6[zi( 0)]^s7[zi(14)]^s8[zi(15)]^s6[zi(12)]; + k[10]= s5[zi( 7)]^s6[zi( 6)]^s7[zi( 8)]^s8[zi( 9)]^s7[zi( 2)]; + k[11]= s5[zi( 5)]^s6[zi( 4)]^s7[zi(10)]^s8[zi(11)]^s8[zi( 6)]; + + x[0] = z[2] ^ s5[zi( 5)]^s6[zi( 7)]^s7[zi( 4)]^s8[zi( 6)]^s7[zi( 0)]; + x[1] = z[0] ^ s5[xi( 0)]^s6[xi( 2)]^s7[xi( 1)]^s8[xi( 3)]^s8[zi( 2)]; + x[2] = z[1] ^ s5[xi( 7)]^s6[xi( 6)]^s7[xi( 5)]^s8[xi( 4)]^s5[zi( 1)]; + x[3] = z[3] ^ s5[xi(10)]^s6[xi( 9)]^s7[xi(11)]^s8[xi( 8)]^s6[zi( 3)]; + k[12]= s5[xi( 8)]^s6[xi( 9)]^s7[xi( 7)]^s8[xi( 6)]^s5[xi( 3)]; + k[13]= s5[xi(10)]^s6[xi(11)]^s7[xi( 5)]^s8[xi( 4)]^s6[xi( 7)]; + k[14]= s5[xi(12)]^s6[xi(13)]^s7[xi( 3)]^s8[xi( 2)]^s7[xi( 8)]; + k[15]= s5[xi(14)]^s6[xi(15)]^s7[xi( 1)]^s8[xi( 0)]^s8[xi(13)]; + + #undef xi + #undef zi +} + + +static int +do_cast_setkey( CAST5_context *c, byte *key, unsigned keylen ) +{ + static int initialized; + static const char* selftest_failed; + int i; + u32 x[4]; + u32 z[4]; + u32 k[16]; + + if( !initialized ) { + initialized = 1; + selftest_failed = selftest(); + if( selftest_failed ) + fprintf(stderr,"CAST5 selftest failed (%s).\n", selftest_failed ); + } + if( selftest_failed ) + return G10ERR_SELFTEST_FAILED; + + if( keylen != 16 ) + return G10ERR_WRONG_KEYLEN; + + x[0] = key[0] << 24 | key[1] << 16 | key[2] << 8 | key[3]; + x[1] = key[4] << 24 | key[5] << 16 | key[6] << 8 | key[7]; + x[2] = key[8] << 24 | key[9] << 16 | key[10] << 8 | key[11]; + x[3] = key[12] << 24 | key[13] << 16 | key[14] << 8 | key[15]; + + key_schedule( x, z, k ); + for(i=0; i < 16; i++ ) + c->Km[i] = k[i]; + key_schedule( x, z, k ); + for(i=0; i < 16; i++ ) + c->Kr[i] = k[i] & 0x1f; + + memset(&x,0, sizeof x); + memset(&z,0, sizeof z); + memset(&k,0, sizeof k); + + #undef xi + #undef zi + return 0; +} + +static int +cast_setkey( CAST5_context *c, byte *key, unsigned keylen ) +{ + int rc = do_cast_setkey (c, key, keylen); + burn_stack (96+7*sizeof(void*)); + return rc; +} + +/**************** + * Return some information about the algorithm. We need algo here to + * distinguish different flavors of the algorithm. + * Returns: A pointer to string describing the algorithm or NULL if + * the ALGO is invalid. + */ +const char * +cast5_get_info( int algo, size_t *keylen, + size_t *blocksize, size_t *contextsize, + int (**r_setkey)( void *c, byte *key, unsigned keylen ), + void (**r_encrypt)( void *c, byte *outbuf, byte *inbuf ), + void (**r_decrypt)( void *c, byte *outbuf, byte *inbuf ) + ) +{ + *keylen = 128; + *blocksize = CAST5_BLOCKSIZE; + *contextsize = sizeof(CAST5_context); + *(int (**)(CAST5_context*, byte*, unsigned))r_setkey + = cast_setkey; + *(void (**)(CAST5_context*, byte*, byte*))r_encrypt + = encrypt_block; + *(void (**)(CAST5_context*, byte*, byte*))r_decrypt + = decrypt_block; + + + if( algo == CIPHER_ALGO_CAST5 ) + return "CAST5"; + return NULL; +} + diff --git a/cipher/cast5.h b/cipher/cast5.h new file mode 100644 index 000000000..798eaa23f --- /dev/null +++ b/cipher/cast5.h @@ -0,0 +1,33 @@ +/* cast5.h + * Copyright (C) 1998 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ +#ifndef G10_CAST5_H +#define G10_CAST5_H + +#include "types.h" + +const char * +cast5_get_info( int algo, size_t *keylen, + size_t *blocksize, size_t *contextsize, + int (**setkeyf)( void *c, byte *key, unsigned keylen ), + void (**encryptf)( void *c, byte *outbuf, byte *inbuf ), + void (**decryptf)( void *c, byte *outbuf, byte *inbuf ) + ); + +#endif /*G10_CAST5_H*/ diff --git a/cipher/cipher.c b/cipher/cipher.c new file mode 100644 index 000000000..2744f041a --- /dev/null +++ b/cipher/cipher.c @@ -0,0 +1,712 @@ +/* cipher.c - cipher dispatcher + * Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + +#include <config.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> +#include <assert.h> +#include "util.h" +#include "errors.h" +#include "cipher.h" +#include "des.h" +#include "blowfish.h" +#include "cast5.h" +#include "dynload.h" + + +#define MAX_BLOCKSIZE 16 +#define TABLE_SIZE 14 + +struct cipher_table_s { + const char *name; + int algo; + size_t blocksize; + size_t keylen; + size_t contextsize; /* allocate this amount of context */ + int (*setkey)( void *c, byte *key, unsigned keylen ); + void (*encrypt)( void *c, byte *outbuf, byte *inbuf ); + void (*decrypt)( void *c, byte *outbuf, byte *inbuf ); +}; + +static struct cipher_table_s cipher_table[TABLE_SIZE]; +static int disabled_algos[TABLE_SIZE]; + + +struct cipher_handle_s { + int algo; + int mode; + size_t blocksize; + byte iv[MAX_BLOCKSIZE]; /* (this should be ulong aligned) */ + byte lastiv[MAX_BLOCKSIZE]; + int unused; /* in IV */ + int (*setkey)( void *c, byte *key, unsigned keylen ); + void (*encrypt)( void *c, byte *outbuf, byte *inbuf ); + void (*decrypt)( void *c, byte *outbuf, byte *inbuf ); + PROPERLY_ALIGNED_TYPE context; +}; + + +#ifdef IS_DEVELOPMENT_VERSION +static int +dummy_setkey( void *c, byte *key, unsigned keylen ) { return 0; } +static void +dummy_encrypt_block( void *c, byte *outbuf, byte *inbuf ) { BUG(); } +static void +dummy_decrypt_block( void *c, byte *outbuf, byte *inbuf ) { BUG(); } +#endif + + +/**************** + * Put the static entries into the table. + */ +static void +setup_cipher_table(void) +{ + + int i; + + i = 0; + cipher_table[i].algo = CIPHER_ALGO_RIJNDAEL; + cipher_table[i].name = rijndael_get_info( cipher_table[i].algo, + &cipher_table[i].keylen, + &cipher_table[i].blocksize, + &cipher_table[i].contextsize, + &cipher_table[i].setkey, + &cipher_table[i].encrypt, + &cipher_table[i].decrypt ); + if( !cipher_table[i].name ) + BUG(); + i++; + cipher_table[i].algo = CIPHER_ALGO_RIJNDAEL192; + cipher_table[i].name = rijndael_get_info( cipher_table[i].algo, + &cipher_table[i].keylen, + &cipher_table[i].blocksize, + &cipher_table[i].contextsize, + &cipher_table[i].setkey, + &cipher_table[i].encrypt, + &cipher_table[i].decrypt ); + if( !cipher_table[i].name ) + BUG(); + i++; + cipher_table[i].algo = CIPHER_ALGO_RIJNDAEL256; + cipher_table[i].name = rijndael_get_info( cipher_table[i].algo, + &cipher_table[i].keylen, + &cipher_table[i].blocksize, + &cipher_table[i].contextsize, + &cipher_table[i].setkey, + &cipher_table[i].encrypt, + &cipher_table[i].decrypt ); + if( !cipher_table[i].name ) + BUG(); + i++; + cipher_table[i].algo = CIPHER_ALGO_TWOFISH; + cipher_table[i].name = twofish_get_info( cipher_table[i].algo, + &cipher_table[i].keylen, + &cipher_table[i].blocksize, + &cipher_table[i].contextsize, + &cipher_table[i].setkey, + &cipher_table[i].encrypt, + &cipher_table[i].decrypt ); + if( !cipher_table[i].name ) + BUG(); + i++; + cipher_table[i].algo = CIPHER_ALGO_BLOWFISH; + cipher_table[i].name = blowfish_get_info( cipher_table[i].algo, + &cipher_table[i].keylen, + &cipher_table[i].blocksize, + &cipher_table[i].contextsize, + &cipher_table[i].setkey, + &cipher_table[i].encrypt, + &cipher_table[i].decrypt ); + if( !cipher_table[i].name ) + BUG(); + i++; + cipher_table[i].algo = CIPHER_ALGO_CAST5; + cipher_table[i].name = cast5_get_info( cipher_table[i].algo, + &cipher_table[i].keylen, + &cipher_table[i].blocksize, + &cipher_table[i].contextsize, + &cipher_table[i].setkey, + &cipher_table[i].encrypt, + &cipher_table[i].decrypt ); + if( !cipher_table[i].name ) + BUG(); + i++; + cipher_table[i].algo = CIPHER_ALGO_3DES; + cipher_table[i].name = des_get_info( cipher_table[i].algo, + &cipher_table[i].keylen, + &cipher_table[i].blocksize, + &cipher_table[i].contextsize, + &cipher_table[i].setkey, + &cipher_table[i].encrypt, + &cipher_table[i].decrypt ); + if( !cipher_table[i].name ) + BUG(); + i++; + +#ifdef IS_DEVELOPMENT_VERSION + cipher_table[i].algo = CIPHER_ALGO_DUMMY; + cipher_table[i].name = "DUMMY"; + cipher_table[i].blocksize = 8; + cipher_table[i].keylen = 128; + cipher_table[i].contextsize = 0; + cipher_table[i].setkey = dummy_setkey; + cipher_table[i].encrypt = dummy_encrypt_block; + cipher_table[i].decrypt = dummy_decrypt_block; + i++; +#endif + + for( ; i < TABLE_SIZE; i++ ) + cipher_table[i].name = NULL; +} + + +/**************** + * Try to load all modules and return true if new modules are available + */ +static int +load_cipher_modules(void) +{ + static int done = 0; + static int initialized = 0; + void *context = NULL; + struct cipher_table_s *ct; + int ct_idx; + int i; + const char *name; + int any = 0; + + if( !initialized ) { + cipher_modules_constructor(); + setup_cipher_table(); /* load static modules on the first call */ + initialized = 1; + return 1; + } + + if( done ) + return 0; + done = 1; + + for(ct_idx=0, ct = cipher_table; ct_idx < TABLE_SIZE; ct_idx++,ct++ ) { + if( !ct->name ) + break; + } + if( ct_idx >= TABLE_SIZE-1 ) + BUG(); /* table already full */ + /* now load all extensions */ + while( (name = enum_gnupgext_ciphers( &context, &ct->algo, + &ct->keylen, &ct->blocksize, &ct->contextsize, + &ct->setkey, &ct->encrypt, &ct->decrypt)) ) { + if( ct->blocksize != 8 && ct->blocksize != 16 ) { + log_info("skipping cipher %d: unsupported blocksize\n", ct->algo); + continue; + } + for(i=0; cipher_table[i].name; i++ ) + if( cipher_table[i].algo == ct->algo ) + break; + if( cipher_table[i].name ) { + log_info("skipping cipher %d: already loaded\n", ct->algo ); + continue; + } + /* put it into the table */ + if( g10_opt_verbose > 1 ) + log_info("loaded cipher %d (%s)\n", ct->algo, name); + ct->name = name; + ct_idx++; + ct++; + any = 1; + /* check whether there are more available table slots */ + if( ct_idx >= TABLE_SIZE-1 ) { + log_info("cipher table full; ignoring other extensions\n"); + break; + } + } + enum_gnupgext_ciphers( &context, NULL, NULL, NULL, NULL, + NULL, NULL, NULL ); + return any; +} + + + + + + + +/**************** + * Map a string to the cipher algo + */ +int +string_to_cipher_algo( const char *string ) +{ + int i; + const char *s; + + /* kludge to alias RIJNDAEL to AES */ + if ( *string == 'R' || *string == 'r') + { + if (!ascii_strcasecmp (string, "RIJNDAEL")) + string = "AES"; + else if (!ascii_strcasecmp (string, "RIJNDAEL192")) + string = "AES192"; + else if (!ascii_strcasecmp (string, "RIJNDAEL256")) + string = "AES256"; + } + + do + { + for(i=0; (s=cipher_table[i].name); i++ ) + { + if( !ascii_strcasecmp( s, string ) ) + return cipher_table[i].algo; + } + } while( load_cipher_modules() ); + return 0; +} + +/**************** + * Map a cipher algo to a string + */ +const char * +cipher_algo_to_string( int algo ) +{ + int i; + + do { + for(i=0; cipher_table[i].name; i++ ) + if( cipher_table[i].algo == algo ) + return cipher_table[i].name; + } while( load_cipher_modules() ); + return NULL; +} + + +void +disable_cipher_algo( int algo ) +{ + int i; + + for(i=0; i < DIM(disabled_algos); i++ ) { + if( !disabled_algos[i] || disabled_algos[i] == algo ) { + disabled_algos[i] = algo; + return; + } + } + /* fixme: we should use a linked list */ + log_fatal("can't disable cipher algo %d: table full\n", algo ); +} + +/**************** + * Return 0 if the cipher algo is available + */ +int +check_cipher_algo( int algo ) +{ + int i; + + do { + for(i=0; cipher_table[i].name; i++ ) + if( cipher_table[i].algo == algo ) { + for(i=0; i < DIM(disabled_algos); i++ ) { + if( disabled_algos[i] == algo ) + return G10ERR_CIPHER_ALGO; + } + return 0; /* okay */ + } + } while( load_cipher_modules() ); + return G10ERR_CIPHER_ALGO; +} + + +unsigned +cipher_get_keylen( int algo ) +{ + int i; + unsigned len = 0; + + do { + for(i=0; cipher_table[i].name; i++ ) { + if( cipher_table[i].algo == algo ) { + len = cipher_table[i].keylen; + if( !len ) + log_bug("cipher %d w/o key length\n", algo ); + return len; + } + } + } while( load_cipher_modules() ); + log_bug("cipher %d not found\n", algo ); + return 0; +} + +unsigned +cipher_get_blocksize( int algo ) +{ + int i; + unsigned len = 0; + + do { + for(i=0; cipher_table[i].name; i++ ) { + if( cipher_table[i].algo == algo ) { + len = cipher_table[i].blocksize; + if( !len ) + log_bug("cipher %d w/o blocksize\n", algo ); + return len; + } + } + } while( load_cipher_modules() ); + log_bug("cipher %d not found\n", algo ); + return 0; +} + + +/**************** + * Open a cipher handle for use with algorithm ALGO, in mode MODE + * and put it into secure memory if SECURE is true. + */ +CIPHER_HANDLE +cipher_open( int algo, int mode, int secure ) +{ + CIPHER_HANDLE hd; + int i; + + fast_random_poll(); + do { + for(i=0; cipher_table[i].name; i++ ) + if( cipher_table[i].algo == algo ) + break; + } while( !cipher_table[i].name && load_cipher_modules() ); + if( !cipher_table[i].name ) { + log_fatal("cipher_open: algorithm %d not available\n", algo ); + return NULL; + } + + /* ? perform selftest here and mark this with a flag in cipher_table ? */ + + hd = secure ? m_alloc_secure_clear( sizeof *hd + + cipher_table[i].contextsize + - sizeof(PROPERLY_ALIGNED_TYPE) ) + : m_alloc_clear( sizeof *hd + cipher_table[i].contextsize + - sizeof(PROPERLY_ALIGNED_TYPE) ); + hd->algo = algo; + hd->blocksize = cipher_table[i].blocksize; + hd->setkey = cipher_table[i].setkey; + hd->encrypt = cipher_table[i].encrypt; + hd->decrypt = cipher_table[i].decrypt; + + if( mode == CIPHER_MODE_AUTO_CFB ) { + if( algo >= 100 ) + hd->mode = CIPHER_MODE_CFB; + else + hd->mode = CIPHER_MODE_PHILS_CFB; + } + else + hd->mode = mode; + +#ifdef IS_DEVELOPMENT_VERSION + if( algo == CIPHER_ALGO_DUMMY ) + hd->mode = CIPHER_MODE_DUMMY; +#endif + + return hd; +} + + +void +cipher_close( CIPHER_HANDLE c ) +{ + m_free(c); +} + + +int +cipher_setkey( CIPHER_HANDLE c, byte *key, unsigned keylen ) +{ + return (*c->setkey)( &c->context.c, key, keylen ); +} + + + +void +cipher_setiv( CIPHER_HANDLE c, const byte *iv, unsigned ivlen ) +{ + memset( c->iv, 0, c->blocksize ); + if( iv ) { + if( ivlen != c->blocksize ) + log_info("WARNING: cipher_setiv: ivlen=%u blklen=%u\n", + ivlen, (unsigned)c->blocksize ); + if( ivlen > c->blocksize ) + ivlen = c->blocksize; + memcpy( c->iv, iv, ivlen ); + } + c->unused = 0; +} + + + +static void +do_ecb_encrypt( CIPHER_HANDLE c, byte *outbuf, byte *inbuf, unsigned nblocks ) +{ + unsigned n; + + for(n=0; n < nblocks; n++ ) { + (*c->encrypt)( &c->context.c, outbuf, inbuf ); + inbuf += c->blocksize; + outbuf += c->blocksize; + } +} + +static void +do_ecb_decrypt( CIPHER_HANDLE c, byte *outbuf, byte *inbuf, unsigned nblocks ) +{ + unsigned n; + + for(n=0; n < nblocks; n++ ) { + (*c->decrypt)( &c->context.c, outbuf, inbuf ); + inbuf += c->blocksize; + outbuf += c->blocksize; + } +} + +static void +do_cbc_encrypt( CIPHER_HANDLE c, byte *outbuf, byte *inbuf, unsigned nblocks ) +{ + unsigned int n; + byte *ivp; + int i; + size_t blocksize = c->blocksize; + + for(n=0; n < nblocks; n++ ) { + /* fixme: the xor should works on words and not on + * bytes. Maybe it is a good idea to enhance the cipher backend + * API to allow for CBC handling in the backend */ + for(ivp=c->iv,i=0; i < blocksize; i++ ) + outbuf[i] = inbuf[i] ^ *ivp++; + (*c->encrypt)( &c->context.c, outbuf, outbuf ); + memcpy(c->iv, outbuf, blocksize ); + inbuf += c->blocksize; + outbuf += c->blocksize; + } +} + +static void +do_cbc_decrypt( CIPHER_HANDLE c, byte *outbuf, byte *inbuf, unsigned nblocks ) +{ + unsigned int n; + byte *ivp; + int i; + size_t blocksize = c->blocksize; + + for(n=0; n < nblocks; n++ ) { + /* because outbuf and inbuf might be the same, we have + * to save the original ciphertext block. We use lastiv + * for this here because it is not used otherwise */ + memcpy(c->lastiv, inbuf, blocksize ); + (*c->decrypt)( &c->context.c, outbuf, inbuf ); + for(ivp=c->iv,i=0; i < blocksize; i++ ) + outbuf[i] ^= *ivp++; + memcpy(c->iv, c->lastiv, blocksize ); + inbuf += c->blocksize; + outbuf += c->blocksize; + } +} + + +static void +do_cfb_encrypt( CIPHER_HANDLE c, byte *outbuf, byte *inbuf, unsigned nbytes ) +{ + byte *ivp; + size_t blocksize = c->blocksize; + + if( nbytes <= c->unused ) { + /* short enough to be encoded by the remaining XOR mask */ + /* XOR the input with the IV and store input into IV */ + for(ivp=c->iv+c->blocksize - c->unused; nbytes; nbytes--, c->unused-- ) + *outbuf++ = (*ivp++ ^= *inbuf++); + return; + } + + if( c->unused ) { + /* XOR the input with the IV and store input into IV */ + nbytes -= c->unused; + for(ivp=c->iv+blocksize - c->unused; c->unused; c->unused-- ) + *outbuf++ = (*ivp++ ^= *inbuf++); + } + + /* now we can process complete blocks */ + while( nbytes >= blocksize ) { + int i; + /* encrypt the IV (and save the current one) */ + memcpy( c->lastiv, c->iv, blocksize ); + (*c->encrypt)( &c->context.c, c->iv, c->iv ); + /* XOR the input with the IV and store input into IV */ + for(ivp=c->iv,i=0; i < blocksize; i++ ) + *outbuf++ = (*ivp++ ^= *inbuf++); + nbytes -= blocksize; + } + if( nbytes ) { /* process the remaining bytes */ + /* encrypt the IV (and save the current one) */ + memcpy( c->lastiv, c->iv, blocksize ); + (*c->encrypt)( &c->context.c, c->iv, c->iv ); + c->unused = blocksize; + /* and apply the xor */ + c->unused -= nbytes; + for(ivp=c->iv; nbytes; nbytes-- ) + *outbuf++ = (*ivp++ ^= *inbuf++); + } +} + +static void +do_cfb_decrypt( CIPHER_HANDLE c, byte *outbuf, byte *inbuf, unsigned nbytes ) +{ + byte *ivp; + ulong temp; + size_t blocksize = c->blocksize; + + if( nbytes <= c->unused ) { + /* short enough to be encoded by the remaining XOR mask */ + /* XOR the input with the IV and store input into IV */ + for(ivp=c->iv+blocksize - c->unused; nbytes; nbytes--,c->unused--){ + temp = *inbuf++; + *outbuf++ = *ivp ^ temp; + *ivp++ = temp; + } + return; + } + + if( c->unused ) { + /* XOR the input with the IV and store input into IV */ + nbytes -= c->unused; + for(ivp=c->iv+blocksize - c->unused; c->unused; c->unused-- ) { + temp = *inbuf++; + *outbuf++ = *ivp ^ temp; + *ivp++ = temp; + } + } + + /* now we can process complete blocks */ + while( nbytes >= blocksize ) { + int i; + /* encrypt the IV (and save the current one) */ + memcpy( c->lastiv, c->iv, blocksize ); + (*c->encrypt)( &c->context.c, c->iv, c->iv ); + /* XOR the input with the IV and store input into IV */ + for(ivp=c->iv,i=0; i < blocksize; i++ ) { + temp = *inbuf++; + *outbuf++ = *ivp ^ temp; + *ivp++ = temp; + } + nbytes -= blocksize; + } + if( nbytes ) { /* process the remaining bytes */ + /* encrypt the IV (and save the current one) */ + memcpy( c->lastiv, c->iv, blocksize ); + (*c->encrypt)( &c->context.c, c->iv, c->iv ); + c->unused = blocksize; + /* and apply the xor */ + c->unused -= nbytes; + for(ivp=c->iv; nbytes; nbytes-- ) { + temp = *inbuf++; + *outbuf++ = *ivp ^ temp; + *ivp++ = temp; + } + } +} + + +/**************** + * Encrypt INBUF to OUTBUF with the mode selected at open. + * inbuf and outbuf may overlap or be the same. + * Depending on the mode some some contraints apply to NBYTES. + */ +void +cipher_encrypt( CIPHER_HANDLE c, byte *outbuf, byte *inbuf, unsigned nbytes ) +{ + switch( c->mode ) { + case CIPHER_MODE_ECB: + assert(!(nbytes%c->blocksize)); + do_ecb_encrypt(c, outbuf, inbuf, nbytes/c->blocksize ); + break; + case CIPHER_MODE_CBC: + assert(!(nbytes%c->blocksize)); + do_cbc_encrypt(c, outbuf, inbuf, nbytes/c->blocksize ); + break; + case CIPHER_MODE_CFB: + case CIPHER_MODE_PHILS_CFB: + do_cfb_encrypt(c, outbuf, inbuf, nbytes ); + break; +#ifdef IS_DEVELOPMENT_VERSION + case CIPHER_MODE_DUMMY: + if( inbuf != outbuf ) + memmove( outbuf, inbuf, nbytes ); + break; +#endif + default: log_fatal("cipher_encrypt: invalid mode %d\n", c->mode ); + } +} + + +/**************** + * Decrypt INBUF to OUTBUF with the mode selected at open. + * inbuf and outbuf may overlap or be the same. + * Depending on the mode some some contraints apply to NBYTES. + */ +void +cipher_decrypt( CIPHER_HANDLE c, byte *outbuf, byte *inbuf, unsigned nbytes ) +{ + switch( c->mode ) { + case CIPHER_MODE_ECB: + assert(!(nbytes%c->blocksize)); + do_ecb_decrypt(c, outbuf, inbuf, nbytes/c->blocksize ); + break; + case CIPHER_MODE_CBC: + assert(!(nbytes%c->blocksize)); + do_cbc_decrypt(c, outbuf, inbuf, nbytes/c->blocksize ); + break; + case CIPHER_MODE_CFB: + case CIPHER_MODE_PHILS_CFB: + do_cfb_decrypt(c, outbuf, inbuf, nbytes ); + break; +#ifdef IS_DEVELOPMENT_VERSION + case CIPHER_MODE_DUMMY: + if( inbuf != outbuf ) + memmove( outbuf, inbuf, nbytes ); + break; +#endif + default: log_fatal("cipher_decrypt: invalid mode %d\n", c->mode ); + } +} + + + +/**************** + * Used for PGP's somewhat strange CFB mode. Only works if + * the handle is in PHILS_CFB mode + */ +void +cipher_sync( CIPHER_HANDLE c ) +{ + if( c->mode == CIPHER_MODE_PHILS_CFB && c->unused ) { + memmove(c->iv + c->unused, c->iv, c->blocksize - c->unused ); + memcpy(c->iv, c->lastiv + c->blocksize - c->unused, c->unused); + c->unused = 0; + } +} + diff --git a/cipher/des.c b/cipher/des.c new file mode 100644 index 000000000..90fd8199e --- /dev/null +++ b/cipher/des.c @@ -0,0 +1,1024 @@ +/* des.c - DES and Triple-DES encryption/decryption Algorithm + * Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + * + * + * According to the definition of DES in FIPS PUB 46-2 from December 1993. + * For a description of triple encryption, see: + * Bruce Schneier: Applied Cryptography. Second Edition. + * John Wiley & Sons, 1996. ISBN 0-471-12845-7. Pages 358 ff. + */ + + +/* + * Written by Michael Roth <mroth@nessie.de>, September 1998 + */ + + +/* + * U S A G E + * =========== + * + * For DES or Triple-DES encryption/decryption you must initialize a proper + * encryption context with a key. + * + * A DES key is 64bit wide but only 56bits of the key are used. The remaining + * bits are parity bits and they will _not_ checked in this implementation, but + * simply ignored. + * + * For Tripple-DES you could use either two 64bit keys or three 64bit keys. + * The parity bits will _not_ checked, too. + * + * After initializing a context with a key you could use this context to + * encrypt or decrypt data in 64bit blocks in Electronic Codebook Mode. + * + * (In the examples below the slashes at the beginning and ending of comments + * are omited.) + * + * DES Example + * ----------- + * unsigned char key[8]; + * unsigned char plaintext[8]; + * unsigned char ciphertext[8]; + * unsigned char recoverd[8]; + * des_ctx context; + * + * * Fill 'key' and 'plaintext' with some data * + * .... + * + * * Set up the DES encryption context * + * des_setkey(context, key); + * + * * Encrypt the plaintext * + * des_ecb_encrypt(context, plaintext, ciphertext); + * + * * To recover the orginal plaintext from ciphertext use: * + * des_ecb_decrypt(context, ciphertext, recoverd); + * + * + * Triple-DES Example + * ------------------ + * unsigned char key1[8]; + * unsigned char key2[8]; + * unsigned char key3[8]; + * unsigned char plaintext[8]; + * unsigned char ciphertext[8]; + * unsigned char recoverd[8]; + * tripledes_ctx context; + * + * * If you would like to use two 64bit keys, fill 'key1' and'key2' + * then setup the encryption context: * + * tripledes_set2keys(context, key1, key2); + * + * * To use three 64bit keys with Triple-DES use: * + * tripledes_set3keys(context, key1, key2, key3); + * + * * Encrypting plaintext with Triple-DES * + * tripledes_ecb_encrypt(context, plaintext, ciphertext); + * + * * Decrypting ciphertext to recover the plaintext with Triple-DES * + * tripledes_ecb_decrypt(context, ciphertext, recoverd); + * + * + * Selftest + * -------- + * char *error_msg; + * + * * To perform a selftest of this DES/Triple-DES implementation use the + * function selftest(). It will return an error string if their are + * some problems with this library. * + * + * if ( (error_msg = selftest()) ) + * { + * fprintf(stderr, "An error in the DES/Tripple-DES implementation occured: %s\n", error_msg); + * abort(); + * } + */ + + +#include <config.h> +#include <stdio.h> +#include <string.h> /* memcpy, memcmp */ +#include "types.h" /* for byte and u32 typedefs */ +#include "errors.h" +#include "des.h" + +#if defined(__GNUC__) && defined(__GNU_LIBRARY__) +#define working_memcmp memcmp +#else +/* + * According to the SunOS man page, memcmp returns indeterminate sign + * depending on whether characters are signed or not. + */ +int +working_memcmp( const char *a, const char *b, size_t n ) +{ + for( ; n; n--, a++, b++ ) + if( *a != *b ) + return (int)(*(byte*)a) - (int)(*(byte*)b); + return 0; +} +#endif + + + +/* Some defines/checks to support standalone modules */ + +#ifndef CIPHER_ALGO_3DES + #define CIPHER_ALGO_3DES 2 +#elif CIPHER_ALGO_3DES != 2 + #error CIPHER_ALGO_3DES is defined to a wrong value. +#endif + + + + +/* + * Encryption/Decryption context of DES + */ +typedef struct _des_ctx + { + u32 encrypt_subkeys[32]; + u32 decrypt_subkeys[32]; + } +des_ctx[1]; + +/* + * Encryption/Decryption context of Triple-DES + */ +typedef struct _tripledes_ctx + { + u32 encrypt_subkeys[96]; + u32 decrypt_subkeys[96]; + } +tripledes_ctx[1]; + +static const char *selftest_failed; + +static void des_key_schedule (const byte *, u32 *); +static int des_setkey (struct _des_ctx *, const byte *); +static int des_ecb_crypt (struct _des_ctx *, const byte *, byte *, int); +static int tripledes_set2keys (struct _tripledes_ctx *, const byte *, const byte *); +static int tripledes_set3keys (struct _tripledes_ctx *, const byte *, const byte *, const byte *); +static int tripledes_ecb_crypt (struct _tripledes_ctx *, const byte *, byte *, int); +static int is_weak_key ( const byte *key ); +static const char *selftest (void); + + + + + + +/* + * The s-box values are permuted according to the 'primitive function P' + * and are rotated one bit to the left. + */ +static u32 sbox1[64] = +{ + 0x01010400, 0x00000000, 0x00010000, 0x01010404, 0x01010004, 0x00010404, 0x00000004, 0x00010000, + 0x00000400, 0x01010400, 0x01010404, 0x00000400, 0x01000404, 0x01010004, 0x01000000, 0x00000004, + 0x00000404, 0x01000400, 0x01000400, 0x00010400, 0x00010400, 0x01010000, 0x01010000, 0x01000404, + 0x00010004, 0x01000004, 0x01000004, 0x00010004, 0x00000000, 0x00000404, 0x00010404, 0x01000000, + 0x00010000, 0x01010404, 0x00000004, 0x01010000, 0x01010400, 0x01000000, 0x01000000, 0x00000400, + 0x01010004, 0x00010000, 0x00010400, 0x01000004, 0x00000400, 0x00000004, 0x01000404, 0x00010404, + 0x01010404, 0x00010004, 0x01010000, 0x01000404, 0x01000004, 0x00000404, 0x00010404, 0x01010400, + 0x00000404, 0x01000400, 0x01000400, 0x00000000, 0x00010004, 0x00010400, 0x00000000, 0x01010004 +}; + +static u32 sbox2[64] = +{ + 0x80108020, 0x80008000, 0x00008000, 0x00108020, 0x00100000, 0x00000020, 0x80100020, 0x80008020, + 0x80000020, 0x80108020, 0x80108000, 0x80000000, 0x80008000, 0x00100000, 0x00000020, 0x80100020, + 0x00108000, 0x00100020, 0x80008020, 0x00000000, 0x80000000, 0x00008000, 0x00108020, 0x80100000, + 0x00100020, 0x80000020, 0x00000000, 0x00108000, 0x00008020, 0x80108000, 0x80100000, 0x00008020, + 0x00000000, 0x00108020, 0x80100020, 0x00100000, 0x80008020, 0x80100000, 0x80108000, 0x00008000, + 0x80100000, 0x80008000, 0x00000020, 0x80108020, 0x00108020, 0x00000020, 0x00008000, 0x80000000, + 0x00008020, 0x80108000, 0x00100000, 0x80000020, 0x00100020, 0x80008020, 0x80000020, 0x00100020, + 0x00108000, 0x00000000, 0x80008000, 0x00008020, 0x80000000, 0x80100020, 0x80108020, 0x00108000 +}; + +static u32 sbox3[64] = +{ + 0x00000208, 0x08020200, 0x00000000, 0x08020008, 0x08000200, 0x00000000, 0x00020208, 0x08000200, + 0x00020008, 0x08000008, 0x08000008, 0x00020000, 0x08020208, 0x00020008, 0x08020000, 0x00000208, + 0x08000000, 0x00000008, 0x08020200, 0x00000200, 0x00020200, 0x08020000, 0x08020008, 0x00020208, + 0x08000208, 0x00020200, 0x00020000, 0x08000208, 0x00000008, 0x08020208, 0x00000200, 0x08000000, + 0x08020200, 0x08000000, 0x00020008, 0x00000208, 0x00020000, 0x08020200, 0x08000200, 0x00000000, + 0x00000200, 0x00020008, 0x08020208, 0x08000200, 0x08000008, 0x00000200, 0x00000000, 0x08020008, + 0x08000208, 0x00020000, 0x08000000, 0x08020208, 0x00000008, 0x00020208, 0x00020200, 0x08000008, + 0x08020000, 0x08000208, 0x00000208, 0x08020000, 0x00020208, 0x00000008, 0x08020008, 0x00020200 +}; + +static u32 sbox4[64] = +{ + 0x00802001, 0x00002081, 0x00002081, 0x00000080, 0x00802080, 0x00800081, 0x00800001, 0x00002001, + 0x00000000, 0x00802000, 0x00802000, 0x00802081, 0x00000081, 0x00000000, 0x00800080, 0x00800001, + 0x00000001, 0x00002000, 0x00800000, 0x00802001, 0x00000080, 0x00800000, 0x00002001, 0x00002080, + 0x00800081, 0x00000001, 0x00002080, 0x00800080, 0x00002000, 0x00802080, 0x00802081, 0x00000081, + 0x00800080, 0x00800001, 0x00802000, 0x00802081, 0x00000081, 0x00000000, 0x00000000, 0x00802000, + 0x00002080, 0x00800080, 0x00800081, 0x00000001, 0x00802001, 0x00002081, 0x00002081, 0x00000080, + 0x00802081, 0x00000081, 0x00000001, 0x00002000, 0x00800001, 0x00002001, 0x00802080, 0x00800081, + 0x00002001, 0x00002080, 0x00800000, 0x00802001, 0x00000080, 0x00800000, 0x00002000, 0x00802080 +}; + +static u32 sbox5[64] = +{ + 0x00000100, 0x02080100, 0x02080000, 0x42000100, 0x00080000, 0x00000100, 0x40000000, 0x02080000, + 0x40080100, 0x00080000, 0x02000100, 0x40080100, 0x42000100, 0x42080000, 0x00080100, 0x40000000, + 0x02000000, 0x40080000, 0x40080000, 0x00000000, 0x40000100, 0x42080100, 0x42080100, 0x02000100, + 0x42080000, 0x40000100, 0x00000000, 0x42000000, 0x02080100, 0x02000000, 0x42000000, 0x00080100, + 0x00080000, 0x42000100, 0x00000100, 0x02000000, 0x40000000, 0x02080000, 0x42000100, 0x40080100, + 0x02000100, 0x40000000, 0x42080000, 0x02080100, 0x40080100, 0x00000100, 0x02000000, 0x42080000, + 0x42080100, 0x00080100, 0x42000000, 0x42080100, 0x02080000, 0x00000000, 0x40080000, 0x42000000, + 0x00080100, 0x02000100, 0x40000100, 0x00080000, 0x00000000, 0x40080000, 0x02080100, 0x40000100 +}; + +static u32 sbox6[64] = +{ + 0x20000010, 0x20400000, 0x00004000, 0x20404010, 0x20400000, 0x00000010, 0x20404010, 0x00400000, + 0x20004000, 0x00404010, 0x00400000, 0x20000010, 0x00400010, 0x20004000, 0x20000000, 0x00004010, + 0x00000000, 0x00400010, 0x20004010, 0x00004000, 0x00404000, 0x20004010, 0x00000010, 0x20400010, + 0x20400010, 0x00000000, 0x00404010, 0x20404000, 0x00004010, 0x00404000, 0x20404000, 0x20000000, + 0x20004000, 0x00000010, 0x20400010, 0x00404000, 0x20404010, 0x00400000, 0x00004010, 0x20000010, + 0x00400000, 0x20004000, 0x20000000, 0x00004010, 0x20000010, 0x20404010, 0x00404000, 0x20400000, + 0x00404010, 0x20404000, 0x00000000, 0x20400010, 0x00000010, 0x00004000, 0x20400000, 0x00404010, + 0x00004000, 0x00400010, 0x20004010, 0x00000000, 0x20404000, 0x20000000, 0x00400010, 0x20004010 +}; + +static u32 sbox7[64] = +{ + 0x00200000, 0x04200002, 0x04000802, 0x00000000, 0x00000800, 0x04000802, 0x00200802, 0x04200800, + 0x04200802, 0x00200000, 0x00000000, 0x04000002, 0x00000002, 0x04000000, 0x04200002, 0x00000802, + 0x04000800, 0x00200802, 0x00200002, 0x04000800, 0x04000002, 0x04200000, 0x04200800, 0x00200002, + 0x04200000, 0x00000800, 0x00000802, 0x04200802, 0x00200800, 0x00000002, 0x04000000, 0x00200800, + 0x04000000, 0x00200800, 0x00200000, 0x04000802, 0x04000802, 0x04200002, 0x04200002, 0x00000002, + 0x00200002, 0x04000000, 0x04000800, 0x00200000, 0x04200800, 0x00000802, 0x00200802, 0x04200800, + 0x00000802, 0x04000002, 0x04200802, 0x04200000, 0x00200800, 0x00000000, 0x00000002, 0x04200802, + 0x00000000, 0x00200802, 0x04200000, 0x00000800, 0x04000002, 0x04000800, 0x00000800, 0x00200002 +}; + +static u32 sbox8[64] = +{ + 0x10001040, 0x00001000, 0x00040000, 0x10041040, 0x10000000, 0x10001040, 0x00000040, 0x10000000, + 0x00040040, 0x10040000, 0x10041040, 0x00041000, 0x10041000, 0x00041040, 0x00001000, 0x00000040, + 0x10040000, 0x10000040, 0x10001000, 0x00001040, 0x00041000, 0x00040040, 0x10040040, 0x10041000, + 0x00001040, 0x00000000, 0x00000000, 0x10040040, 0x10000040, 0x10001000, 0x00041040, 0x00040000, + 0x00041040, 0x00040000, 0x10041000, 0x00001000, 0x00000040, 0x10040040, 0x00001000, 0x00041040, + 0x10001000, 0x00000040, 0x10000040, 0x10040000, 0x10040040, 0x10000000, 0x00040000, 0x10001040, + 0x00000000, 0x10041040, 0x00040040, 0x10000040, 0x10040000, 0x10001000, 0x10001040, 0x00000000, + 0x10041040, 0x00041000, 0x00041000, 0x00001040, 0x00001040, 0x00040040, 0x10000000, 0x10041000 +}; + + +/* + * These two tables are part of the 'permuted choice 1' function. + * In this implementation several speed improvements are done. + */ +u32 leftkey_swap[16] = +{ + 0x00000000, 0x00000001, 0x00000100, 0x00000101, + 0x00010000, 0x00010001, 0x00010100, 0x00010101, + 0x01000000, 0x01000001, 0x01000100, 0x01000101, + 0x01010000, 0x01010001, 0x01010100, 0x01010101 +}; + +u32 rightkey_swap[16] = +{ + 0x00000000, 0x01000000, 0x00010000, 0x01010000, + 0x00000100, 0x01000100, 0x00010100, 0x01010100, + 0x00000001, 0x01000001, 0x00010001, 0x01010001, + 0x00000101, 0x01000101, 0x00010101, 0x01010101, +}; + + + +/* + * Numbers of left shifts per round for encryption subkeys. + * To calculate the decryption subkeys we just reverse the + * ordering of the calculated encryption subkeys. So their + * is no need for a decryption rotate tab. + */ +static byte encrypt_rotate_tab[16] = +{ + 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1 +}; + + + +/* + * Table with weak DES keys sorted in ascending order. + * In DES their are 64 known keys wich are weak. They are weak + * because they produce only one, two or four different + * subkeys in the subkey scheduling process. + * The keys in this table have all their parity bits cleared. + */ +static byte weak_keys[64][8] = +{ + { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, { 0x00, 0x00, 0x1e, 0x1e, 0x00, 0x00, 0x0e, 0x0e }, + { 0x00, 0x00, 0xe0, 0xe0, 0x00, 0x00, 0xf0, 0xf0 }, { 0x00, 0x00, 0xfe, 0xfe, 0x00, 0x00, 0xfe, 0xfe }, + { 0x00, 0x1e, 0x00, 0x1e, 0x00, 0x0e, 0x00, 0x0e }, { 0x00, 0x1e, 0x1e, 0x00, 0x00, 0x0e, 0x0e, 0x00 }, + { 0x00, 0x1e, 0xe0, 0xfe, 0x00, 0x0e, 0xf0, 0xfe }, { 0x00, 0x1e, 0xfe, 0xe0, 0x00, 0x0e, 0xfe, 0xf0 }, + { 0x00, 0xe0, 0x00, 0xe0, 0x00, 0xf0, 0x00, 0xf0 }, { 0x00, 0xe0, 0x1e, 0xfe, 0x00, 0xf0, 0x0e, 0xfe }, + { 0x00, 0xe0, 0xe0, 0x00, 0x00, 0xf0, 0xf0, 0x00 }, { 0x00, 0xe0, 0xfe, 0x1e, 0x00, 0xf0, 0xfe, 0x0e }, + { 0x00, 0xfe, 0x00, 0xfe, 0x00, 0xfe, 0x00, 0xfe }, { 0x00, 0xfe, 0x1e, 0xe0, 0x00, 0xfe, 0x0e, 0xf0 }, + { 0x00, 0xfe, 0xe0, 0x1e, 0x00, 0xfe, 0xf0, 0x0e }, { 0x00, 0xfe, 0xfe, 0x00, 0x00, 0xfe, 0xfe, 0x00 }, + { 0x0e, 0x0e, 0x0e, 0x0e, 0xf0, 0xf0, 0xf0, 0xf0 }, { 0x1e, 0x00, 0x00, 0x1e, 0x0e, 0x00, 0x00, 0x0e }, + { 0x1e, 0x00, 0x1e, 0x00, 0x0e, 0x00, 0x0e, 0x00 }, { 0x1e, 0x00, 0xe0, 0xfe, 0x0e, 0x00, 0xf0, 0xfe }, + { 0x1e, 0x00, 0xfe, 0xe0, 0x0e, 0x00, 0xfe, 0xf0 }, { 0x1e, 0x1e, 0x00, 0x00, 0x0e, 0x0e, 0x00, 0x00 }, + { 0x1e, 0x1e, 0x1e, 0x1e, 0x0e, 0x0e, 0x0e, 0x0e }, { 0x1e, 0x1e, 0xe0, 0xe0, 0x0e, 0x0e, 0xf0, 0xf0 }, + { 0x1e, 0x1e, 0xfe, 0xfe, 0x0e, 0x0e, 0xfe, 0xfe }, { 0x1e, 0xe0, 0x00, 0xfe, 0x0e, 0xf0, 0x00, 0xfe }, + { 0x1e, 0xe0, 0x1e, 0xe0, 0x0e, 0xf0, 0x0e, 0xf0 }, { 0x1e, 0xe0, 0xe0, 0x1e, 0x0e, 0xf0, 0xf0, 0x0e }, + { 0x1e, 0xe0, 0xfe, 0x00, 0x0e, 0xf0, 0xfe, 0x00 }, { 0x1e, 0xfe, 0x00, 0xe0, 0x0e, 0xfe, 0x00, 0xf0 }, + { 0x1e, 0xfe, 0x1e, 0xfe, 0x0e, 0xfe, 0x0e, 0xfe }, { 0x1e, 0xfe, 0xe0, 0x00, 0x0e, 0xfe, 0xf0, 0x00 }, + { 0x1e, 0xfe, 0xfe, 0x1e, 0x0e, 0xfe, 0xfe, 0x0e }, { 0xe0, 0x00, 0x00, 0xe0, 0xf0, 0x00, 0x00, 0xf0 }, + { 0xe0, 0x00, 0x1e, 0xfe, 0xf0, 0x00, 0x0e, 0xfe }, { 0xe0, 0x00, 0xe0, 0x00, 0xf0, 0x00, 0xf0, 0x00 }, + { 0xe0, 0x00, 0xfe, 0x1e, 0xf0, 0x00, 0xfe, 0x0e }, { 0xe0, 0x1e, 0x00, 0xfe, 0xf0, 0x0e, 0x00, 0xfe }, + { 0xe0, 0x1e, 0x1e, 0xe0, 0xf0, 0x0e, 0x0e, 0xf0 }, { 0xe0, 0x1e, 0xe0, 0x1e, 0xf0, 0x0e, 0xf0, 0x0e }, + { 0xe0, 0x1e, 0xfe, 0x00, 0xf0, 0x0e, 0xfe, 0x00 }, { 0xe0, 0xe0, 0x00, 0x00, 0xf0, 0xf0, 0x00, 0x00 }, + { 0xe0, 0xe0, 0x1e, 0x1e, 0xf0, 0xf0, 0x0e, 0x0e }, { 0xe0, 0xe0, 0xfe, 0xfe, 0xf0, 0xf0, 0xfe, 0xfe }, + { 0xe0, 0xfe, 0x00, 0x1e, 0xf0, 0xfe, 0x00, 0x0e }, { 0xe0, 0xfe, 0x1e, 0x00, 0xf0, 0xfe, 0x0e, 0x00 }, + { 0xe0, 0xfe, 0xe0, 0xfe, 0xf0, 0xfe, 0xf0, 0xfe }, { 0xe0, 0xfe, 0xfe, 0xe0, 0xf0, 0xfe, 0xfe, 0xf0 }, + { 0xfe, 0x00, 0x00, 0xfe, 0xfe, 0x00, 0x00, 0xfe }, { 0xfe, 0x00, 0x1e, 0xe0, 0xfe, 0x00, 0x0e, 0xf0 }, + { 0xfe, 0x00, 0xe0, 0x1e, 0xfe, 0x00, 0xf0, 0x0e }, { 0xfe, 0x00, 0xfe, 0x00, 0xfe, 0x00, 0xfe, 0x00 }, + { 0xfe, 0x1e, 0x00, 0xe0, 0xfe, 0x0e, 0x00, 0xf0 }, { 0xfe, 0x1e, 0x1e, 0xfe, 0xfe, 0x0e, 0x0e, 0xfe }, + { 0xfe, 0x1e, 0xe0, 0x00, 0xfe, 0x0e, 0xf0, 0x00 }, { 0xfe, 0x1e, 0xfe, 0x1e, 0xfe, 0x0e, 0xfe, 0x0e }, + { 0xfe, 0xe0, 0x00, 0x1e, 0xfe, 0xf0, 0x00, 0x0e }, { 0xfe, 0xe0, 0x1e, 0x00, 0xfe, 0xf0, 0x0e, 0x00 }, + { 0xfe, 0xe0, 0xe0, 0xfe, 0xfe, 0xf0, 0xf0, 0xfe }, { 0xfe, 0xe0, 0xfe, 0xe0, 0xfe, 0xf0, 0xfe, 0xf0 }, + { 0xfe, 0xfe, 0x00, 0x00, 0xfe, 0xfe, 0x00, 0x00 }, { 0xfe, 0xfe, 0x1e, 0x1e, 0xfe, 0xfe, 0x0e, 0x0e }, + { 0xfe, 0xfe, 0xe0, 0xe0, 0xfe, 0xfe, 0xf0, 0xf0 }, { 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe } +}; + + + + + + +/* + * Macro to swap bits across two words. + */ +#define DO_PERMUTATION(a, temp, b, offset, mask) \ + temp = ((a>>offset) ^ b) & mask; \ + b ^= temp; \ + a ^= temp<<offset; + + +/* + * This performs the 'initial permutation' of the data to be encrypted + * or decrypted. Additionally the resulting two words are rotated one bit + * to the left. + */ +#define INITIAL_PERMUTATION(left, temp, right) \ + DO_PERMUTATION(left, temp, right, 4, 0x0f0f0f0f) \ + DO_PERMUTATION(left, temp, right, 16, 0x0000ffff) \ + DO_PERMUTATION(right, temp, left, 2, 0x33333333) \ + DO_PERMUTATION(right, temp, left, 8, 0x00ff00ff) \ + right = (right << 1) | (right >> 31); \ + temp = (left ^ right) & 0xaaaaaaaa; \ + right ^= temp; \ + left ^= temp; \ + left = (left << 1) | (left >> 31); + +/* + * The 'inverse initial permutation'. + */ +#define FINAL_PERMUTATION(left, temp, right) \ + left = (left << 31) | (left >> 1); \ + temp = (left ^ right) & 0xaaaaaaaa; \ + left ^= temp; \ + right ^= temp; \ + right = (right << 31) | (right >> 1); \ + DO_PERMUTATION(right, temp, left, 8, 0x00ff00ff) \ + DO_PERMUTATION(right, temp, left, 2, 0x33333333) \ + DO_PERMUTATION(left, temp, right, 16, 0x0000ffff) \ + DO_PERMUTATION(left, temp, right, 4, 0x0f0f0f0f) + + +/* + * A full DES round including 'expansion function', 'sbox substitution' + * and 'primitive function P' but without swapping the left and right word. + * Please note: The data in 'from' and 'to' is already rotated one bit to + * the left, done in the initial permutation. + */ +#define DES_ROUND(from, to, work, subkey) \ + work = from ^ *subkey++; \ + to ^= sbox8[ work & 0x3f ]; \ + to ^= sbox6[ (work>>8) & 0x3f ]; \ + to ^= sbox4[ (work>>16) & 0x3f ]; \ + to ^= sbox2[ (work>>24) & 0x3f ]; \ + work = ((from << 28) | (from >> 4)) ^ *subkey++; \ + to ^= sbox7[ work & 0x3f ]; \ + to ^= sbox5[ (work>>8) & 0x3f ]; \ + to ^= sbox3[ (work>>16) & 0x3f ]; \ + to ^= sbox1[ (work>>24) & 0x3f ]; + +/* + * Macros to convert 8 bytes from/to 32bit words. + */ +#define READ_64BIT_DATA(data, left, right) \ + left = (data[0] << 24) | (data[1] << 16) | (data[2] << 8) | data[3]; \ + right = (data[4] << 24) | (data[5] << 16) | (data[6] << 8) | data[7]; + +#define WRITE_64BIT_DATA(data, left, right) \ + data[0] = (left >> 24) &0xff; data[1] = (left >> 16) &0xff; \ + data[2] = (left >> 8) &0xff; data[3] = left &0xff; \ + data[4] = (right >> 24) &0xff; data[5] = (right >> 16) &0xff; \ + data[6] = (right >> 8) &0xff; data[7] = right &0xff; + +/* + * Handy macros for encryption and decryption of data + */ +#define des_ecb_encrypt(ctx, from, to) des_ecb_crypt(ctx, from, to, 0) +#define des_ecb_decrypt(ctx, from, to) des_ecb_crypt(ctx, from, to, 1) +#define tripledes_ecb_encrypt(ctx, from, to) tripledes_ecb_crypt(ctx, from, to, 0) +#define tripledes_ecb_decrypt(ctx, from, to) tripledes_ecb_crypt(ctx, from, to, 1) + + +static void +burn_stack (int bytes) +{ + char buf[64]; + + memset (buf, 0, sizeof buf); + bytes -= sizeof buf; + if (bytes > 0) + burn_stack (bytes); +} + +/* + * des_key_schedule(): Calculate 16 subkeys pairs (even/odd) for + * 16 encryption rounds. + * To calculate subkeys for decryption the caller + * have to reorder the generated subkeys. + * + * rawkey: 8 Bytes of key data + * subkey: Array of at least 32 u32s. Will be filled + * with calculated subkeys. + * + */ +static void +des_key_schedule (const byte * rawkey, u32 * subkey) +{ + u32 left, right, work; + int round; + + READ_64BIT_DATA (rawkey, left, right) + + DO_PERMUTATION (right, work, left, 4, 0x0f0f0f0f) + DO_PERMUTATION (right, work, left, 0, 0x10101010) + + left = (leftkey_swap[(left >> 0) & 0xf] << 3) | (leftkey_swap[(left >> 8) & 0xf] << 2) + | (leftkey_swap[(left >> 16) & 0xf] << 1) | (leftkey_swap[(left >> 24) & 0xf]) + | (leftkey_swap[(left >> 5) & 0xf] << 7) | (leftkey_swap[(left >> 13) & 0xf] << 6) + | (leftkey_swap[(left >> 21) & 0xf] << 5) | (leftkey_swap[(left >> 29) & 0xf] << 4); + + left &= 0x0fffffff; + + right = (rightkey_swap[(right >> 1) & 0xf] << 3) | (rightkey_swap[(right >> 9) & 0xf] << 2) + | (rightkey_swap[(right >> 17) & 0xf] << 1) | (rightkey_swap[(right >> 25) & 0xf]) + | (rightkey_swap[(right >> 4) & 0xf] << 7) | (rightkey_swap[(right >> 12) & 0xf] << 6) + | (rightkey_swap[(right >> 20) & 0xf] << 5) | (rightkey_swap[(right >> 28) & 0xf] << 4); + + right &= 0x0fffffff; + + for (round = 0; round < 16; ++round) + { + left = ((left << encrypt_rotate_tab[round]) | (left >> (28 - encrypt_rotate_tab[round]))) & 0x0fffffff; + right = ((right << encrypt_rotate_tab[round]) | (right >> (28 - encrypt_rotate_tab[round]))) & 0x0fffffff; + + *subkey++ = ((left << 4) & 0x24000000) + | ((left << 28) & 0x10000000) + | ((left << 14) & 0x08000000) + | ((left << 18) & 0x02080000) + | ((left << 6) & 0x01000000) + | ((left << 9) & 0x00200000) + | ((left >> 1) & 0x00100000) + | ((left << 10) & 0x00040000) + | ((left << 2) & 0x00020000) + | ((left >> 10) & 0x00010000) + | ((right >> 13) & 0x00002000) + | ((right >> 4) & 0x00001000) + | ((right << 6) & 0x00000800) + | ((right >> 1) & 0x00000400) + | ((right >> 14) & 0x00000200) + | (right & 0x00000100) + | ((right >> 5) & 0x00000020) + | ((right >> 10) & 0x00000010) + | ((right >> 3) & 0x00000008) + | ((right >> 18) & 0x00000004) + | ((right >> 26) & 0x00000002) + | ((right >> 24) & 0x00000001); + + *subkey++ = ((left << 15) & 0x20000000) + | ((left << 17) & 0x10000000) + | ((left << 10) & 0x08000000) + | ((left << 22) & 0x04000000) + | ((left >> 2) & 0x02000000) + | ((left << 1) & 0x01000000) + | ((left << 16) & 0x00200000) + | ((left << 11) & 0x00100000) + | ((left << 3) & 0x00080000) + | ((left >> 6) & 0x00040000) + | ((left << 15) & 0x00020000) + | ((left >> 4) & 0x00010000) + | ((right >> 2) & 0x00002000) + | ((right << 8) & 0x00001000) + | ((right >> 14) & 0x00000808) + | ((right >> 9) & 0x00000400) + | ((right) & 0x00000200) + | ((right << 7) & 0x00000100) + | ((right >> 7) & 0x00000020) + | ((right >> 3) & 0x00000011) + | ((right << 2) & 0x00000004) + | ((right >> 21) & 0x00000002); + } +} + + + +/* + * Fill a DES context with subkeys calculated from a 64bit key. + * Does not check parity bits, but simply ignore them. + * Does not check for weak keys. + */ +static int +des_setkey (struct _des_ctx *ctx, const byte * key) +{ + int i; + + if( selftest_failed ) + return G10ERR_SELFTEST_FAILED; + + des_key_schedule (key, ctx->encrypt_subkeys); + burn_stack (32); + + for(i=0; i<32; i+=2) + { + ctx->decrypt_subkeys[i] = ctx->encrypt_subkeys[30-i]; + ctx->decrypt_subkeys[i+1] = ctx->encrypt_subkeys[31-i]; + } + + return 0; +} + + + +/* + * Electronic Codebook Mode DES encryption/decryption of data according + * to 'mode'. + */ +static int +des_ecb_crypt (struct _des_ctx *ctx, const byte * from, byte * to, int mode) +{ + u32 left, right, work; + u32 *keys; + + keys = mode ? ctx->decrypt_subkeys : ctx->encrypt_subkeys; + + READ_64BIT_DATA (from, left, right) + INITIAL_PERMUTATION (left, work, right) + + DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys) + DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys) + DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys) + DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys) + DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys) + DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys) + DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys) + DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys) + + FINAL_PERMUTATION (right, work, left) + WRITE_64BIT_DATA (to, right, left) + + return 0; +} + + + +/* + * Fill a Triple-DES context with subkeys calculated from two 64bit keys. + * Does not check the parity bits of the keys, but simply ignore them. + * Does not check for weak keys. + */ +static int +tripledes_set2keys (struct _tripledes_ctx *ctx, + const byte * key1, + const byte * key2) +{ + int i; + + des_key_schedule (key1, ctx->encrypt_subkeys); + des_key_schedule (key2, &(ctx->decrypt_subkeys[32])); + burn_stack (32); + + for(i=0; i<32; i+=2) + { + ctx->decrypt_subkeys[i] = ctx->encrypt_subkeys[30-i]; + ctx->decrypt_subkeys[i+1] = ctx->encrypt_subkeys[31-i]; + + ctx->encrypt_subkeys[i+32] = ctx->decrypt_subkeys[62-i]; + ctx->encrypt_subkeys[i+33] = ctx->decrypt_subkeys[63-i]; + + ctx->encrypt_subkeys[i+64] = ctx->encrypt_subkeys[i]; + ctx->encrypt_subkeys[i+65] = ctx->encrypt_subkeys[i+1]; + + ctx->decrypt_subkeys[i+64] = ctx->decrypt_subkeys[i]; + ctx->decrypt_subkeys[i+65] = ctx->decrypt_subkeys[i+1]; + } + + return 0; +} + + + +/* + * Fill a Triple-DES context with subkeys calculated from three 64bit keys. + * Does not check the parity bits of the keys, but simply ignore them. + * Does not check for weak keys. + */ +static int +tripledes_set3keys (struct _tripledes_ctx *ctx, + const byte * key1, + const byte * key2, + const byte * key3) +{ + int i; + + des_key_schedule (key1, ctx->encrypt_subkeys); + des_key_schedule (key2, &(ctx->decrypt_subkeys[32])); + des_key_schedule (key3, &(ctx->encrypt_subkeys[64])); + burn_stack (32); + + for(i=0; i<32; i+=2) + { + ctx->decrypt_subkeys[i] = ctx->encrypt_subkeys[94-i]; + ctx->decrypt_subkeys[i+1] = ctx->encrypt_subkeys[95-i]; + + ctx->encrypt_subkeys[i+32] = ctx->decrypt_subkeys[62-i]; + ctx->encrypt_subkeys[i+33] = ctx->decrypt_subkeys[63-i]; + + ctx->decrypt_subkeys[i+64] = ctx->encrypt_subkeys[30-i]; + ctx->decrypt_subkeys[i+65] = ctx->encrypt_subkeys[31-i]; + } + + return 0; +} + + + +/* + * Electronic Codebook Mode Triple-DES encryption/decryption of data according to 'mode'. + * Sometimes this mode is named 'EDE' mode (Encryption-Decryption-Encryption). + */ +static int +tripledes_ecb_crypt (struct _tripledes_ctx *ctx, const byte * from, byte * to, int mode) +{ + u32 left, right, work; + u32 *keys; + + keys = mode ? ctx->decrypt_subkeys : ctx->encrypt_subkeys; + + READ_64BIT_DATA (from, left, right) + INITIAL_PERMUTATION (left, work, right) + + DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys) + DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys) + DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys) + DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys) + DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys) + DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys) + DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys) + DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys) + + DES_ROUND (left, right, work, keys) DES_ROUND (right, left, work, keys) + DES_ROUND (left, right, work, keys) DES_ROUND (right, left, work, keys) + DES_ROUND (left, right, work, keys) DES_ROUND (right, left, work, keys) + DES_ROUND (left, right, work, keys) DES_ROUND (right, left, work, keys) + DES_ROUND (left, right, work, keys) DES_ROUND (right, left, work, keys) + DES_ROUND (left, right, work, keys) DES_ROUND (right, left, work, keys) + DES_ROUND (left, right, work, keys) DES_ROUND (right, left, work, keys) + DES_ROUND (left, right, work, keys) DES_ROUND (right, left, work, keys) + + DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys) + DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys) + DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys) + DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys) + DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys) + DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys) + DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys) + DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys) + + FINAL_PERMUTATION (right, work, left) + WRITE_64BIT_DATA (to, right, left) + + return 0; +} + + + + + +/* + * Check whether the 8 byte key is weak. + * Dose not check the parity bits of the key but simple ignore them. + */ +static int +is_weak_key ( const byte *key ) +{ + byte work[8]; + int i, left, right, middle, cmp_result; + + /* clear parity bits */ + for(i=0; i<8; ++i) + work[i] = key[i] & 0xfe; + + /* binary search in the weak key table */ + left = 0; + right = 63; + while(left <= right) + { + middle = (left + right) / 2; + + if ( !(cmp_result=working_memcmp(work, weak_keys[middle], 8)) ) + return -1; + + if ( cmp_result > 0 ) + left = middle + 1; + else + right = middle - 1; + } + + return 0; +} + + + +/* + * Performs a selftest of this DES/Triple-DES implementation. + * Returns an string with the error text on failure. + * Returns NULL if all is ok. + */ +static const char * +selftest (void) +{ + /* + * Check if 'u32' is really 32 bits wide. This DES / 3DES implementation + * need this. + */ + if (sizeof (u32) != 4) + return "Wrong word size for DES configured."; + + /* + * DES Maintenance Test + */ + { + int i; + byte key[8] = + {0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55}; + byte input[8] = + {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; + byte result[8] = + {0x24, 0x6e, 0x9d, 0xb9, 0xc5, 0x50, 0x38, 0x1a}; + byte temp1[8], temp2[8], temp3[8]; + des_ctx des; + + for (i = 0; i < 64; ++i) + { + des_setkey (des, key); + des_ecb_encrypt (des, input, temp1); + des_ecb_encrypt (des, temp1, temp2); + des_setkey (des, temp2); + des_ecb_decrypt (des, temp1, temp3); + memcpy (key, temp3, 8); + memcpy (input, temp1, 8); + } + if (memcmp (temp3, result, 8)) + return "DES maintenance test failed."; + } + + + /* + * Self made Triple-DES test (Does somebody known an official test?) + */ + { + int i; + byte input[8] = + {0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10}; + byte key1[8] = + {0x12, 0x34, 0x56, 0x78, 0x9a, 0xbc, 0xde, 0xf0}; + byte key2[8] = + {0x11, 0x22, 0x33, 0x44, 0xff, 0xaa, 0xcc, 0xdd}; + byte result[8] = + {0x7b, 0x38, 0x3b, 0x23, 0xa2, 0x7d, 0x26, 0xd3}; + + tripledes_ctx des3; + + for (i = 0; i < 16; ++i) + { + tripledes_set2keys (des3, key1, key2); + tripledes_ecb_encrypt (des3, input, key1); + tripledes_ecb_decrypt (des3, input, key2); + tripledes_set3keys (des3, key1, input, key2); + tripledes_ecb_encrypt (des3, input, input); + } + if (memcmp (input, result, 8)) + return "Triple-DES test failed."; + } + + /* + * More Triple-DES test. These are testvectors as used by SSLeay, + * thanks to Jeroen C. van Gelderen. + */ + { struct { byte key[24]; byte plain[8]; byte cipher[8]; } testdata[] = { + { { 0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01, + 0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01, + 0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01 }, + { 0x95,0xF8,0xA5,0xE5,0xDD,0x31,0xD9,0x00 }, + { 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00 } + }, + + { { 0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01, + 0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01, + 0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01 }, + { 0x9D,0x64,0x55,0x5A,0x9A,0x10,0xB8,0x52, }, + { 0x00,0x00,0x00,0x10,0x00,0x00,0x00,0x00 } + }, + { { 0x38,0x49,0x67,0x4C,0x26,0x02,0x31,0x9E, + 0x38,0x49,0x67,0x4C,0x26,0x02,0x31,0x9E, + 0x38,0x49,0x67,0x4C,0x26,0x02,0x31,0x9E }, + { 0x51,0x45,0x4B,0x58,0x2D,0xDF,0x44,0x0A }, + { 0x71,0x78,0x87,0x6E,0x01,0xF1,0x9B,0x2A } + }, + { { 0x04,0xB9,0x15,0xBA,0x43,0xFE,0xB5,0xB6, + 0x04,0xB9,0x15,0xBA,0x43,0xFE,0xB5,0xB6, + 0x04,0xB9,0x15,0xBA,0x43,0xFE,0xB5,0xB6 }, + { 0x42,0xFD,0x44,0x30,0x59,0x57,0x7F,0xA2 }, + { 0xAF,0x37,0xFB,0x42,0x1F,0x8C,0x40,0x95 } + }, + { { 0x01,0x23,0x45,0x67,0x89,0xAB,0xCD,0xEF, + 0x01,0x23,0x45,0x67,0x89,0xAB,0xCD,0xEF, + 0x01,0x23,0x45,0x67,0x89,0xAB,0xCD,0xEF }, + { 0x73,0x6F,0x6D,0x65,0x64,0x61,0x74,0x61 }, + { 0x3D,0x12,0x4F,0xE2,0x19,0x8B,0xA3,0x18 } + }, + { { 0x01,0x23,0x45,0x67,0x89,0xAB,0xCD,0xEF, + 0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55, + 0x01,0x23,0x45,0x67,0x89,0xAB,0xCD,0xEF }, + { 0x73,0x6F,0x6D,0x65,0x64,0x61,0x74,0x61 }, + { 0xFB,0xAB,0xA1,0xFF,0x9D,0x05,0xE9,0xB1 } + }, + { { 0x01,0x23,0x45,0x67,0x89,0xAB,0xCD,0xEF, + 0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55, + 0xFE,0xDC,0xBA,0x98,0x76,0x54,0x32,0x10 }, + { 0x73,0x6F,0x6D,0x65,0x64,0x61,0x74,0x61 }, + { 0x18,0xd7,0x48,0xe5,0x63,0x62,0x05,0x72 } + }, + { { 0x03,0x52,0x02,0x07,0x67,0x20,0x82,0x17, + 0x86,0x02,0x87,0x66,0x59,0x08,0x21,0x98, + 0x64,0x05,0x6A,0xBD,0xFE,0xA9,0x34,0x57 }, + { 0x73,0x71,0x75,0x69,0x67,0x67,0x6C,0x65 }, + { 0xc0,0x7d,0x2a,0x0f,0xa5,0x66,0xfa,0x30 } + }, + { { 0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01, + 0x80,0x01,0x01,0x01,0x01,0x01,0x01,0x01, + 0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x02 }, + { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, + { 0xe6,0xe6,0xdd,0x5b,0x7e,0x72,0x29,0x74 } + }, + { { 0x10,0x46,0x10,0x34,0x89,0x98,0x80,0x20, + 0x91,0x07,0xD0,0x15,0x89,0x19,0x01,0x01, + 0x19,0x07,0x92,0x10,0x98,0x1A,0x01,0x01 }, + { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, + { 0xe1,0xef,0x62,0xc3,0x32,0xfe,0x82,0x5b } + } + }; + + byte result[8]; + int i; + static char error[80]; + tripledes_ctx des3; + + for (i=0; i<sizeof(testdata)/sizeof(*testdata); ++i) { + tripledes_set3keys (des3, testdata[i].key, testdata[i].key + 8, testdata[i].key + 16); + + tripledes_ecb_encrypt (des3, testdata[i].plain, result); + if (memcmp (testdata[i].cipher, result, 8)) { + sprintf (error, "Triple-DES SSLeay test pattern no. %d failend on encryption.", i+1); + return error; + } + + tripledes_ecb_decrypt (des3, testdata[i].cipher, result); + if (memcmp (testdata[i].plain, result, 8)) { + sprintf (error, "Triple-DES SSLeay test pattern no. %d failend on decryption.", i+1); + return error; + } + } + } + + /* + * Check the weak key detection. We simply assume that the table + * with weak keys is ok and check every key in the table if it is + * detected... (This test is a little bit stupid) + */ + { + int i; + + for (i = 0; i < 64; ++i) + if (!is_weak_key(weak_keys[i])) + return "DES weak key detection failed"; + } + + return 0; +} + + +static int +do_tripledes_setkey ( struct _tripledes_ctx *ctx, byte *key, unsigned keylen ) +{ + if( selftest_failed ) + return G10ERR_SELFTEST_FAILED; + if( keylen != 24 ) + return G10ERR_WRONG_KEYLEN; + + tripledes_set3keys ( ctx, key, key+8, key+16); + + if( is_weak_key( key ) || is_weak_key( key+8 ) || is_weak_key( key+16 ) ) { + burn_stack (64); + return G10ERR_WEAK_KEY; + } + burn_stack (64); + + return 0; +} + + +static void +do_tripledes_encrypt( struct _tripledes_ctx *ctx, byte *outbuf, byte *inbuf ) +{ + tripledes_ecb_encrypt ( ctx, inbuf, outbuf ); + burn_stack (32); +} + +static void +do_tripledes_decrypt( struct _tripledes_ctx *ctx, byte *outbuf, byte *inbuf ) +{ + tripledes_ecb_decrypt ( ctx, inbuf, outbuf ); + burn_stack (32); +} + + +/**************** + * Return some information about the algorithm. We need algo here to + * distinguish different flavors of the algorithm. + * Returns: A pointer to string describing the algorithm or NULL if + * the ALGO is invalid. + */ +const char * +des_get_info( int algo, size_t *keylen, + size_t *blocksize, size_t *contextsize, + int (**r_setkey)( void *c, byte *key, unsigned keylen ), + void (**r_encrypt)( void *c, byte *outbuf, byte *inbuf ), + void (**r_decrypt)( void *c, byte *outbuf, byte *inbuf ) + ) +{ + static int did_selftest = 0; + + if( !did_selftest ) { + const char *s = selftest(); + did_selftest = 1; + if( s ) { + fprintf(stderr,"%s\n", s ); + selftest_failed = s; + return NULL; + } + } + + if( algo == CIPHER_ALGO_3DES ) { + *keylen = 192; + *blocksize = 8; + *contextsize = sizeof(struct _tripledes_ctx); + *(int (**)(struct _tripledes_ctx*, byte*, unsigned))r_setkey + = do_tripledes_setkey; + *(void (**)(struct _tripledes_ctx*, byte*, byte*))r_encrypt + = do_tripledes_encrypt; + *(void (**)(struct _tripledes_ctx*, byte*, byte*))r_decrypt + = do_tripledes_decrypt; + return "3DES"; + } + return NULL; +} + diff --git a/cipher/des.h b/cipher/des.h new file mode 100644 index 000000000..f68560686 --- /dev/null +++ b/cipher/des.h @@ -0,0 +1,34 @@ +/* des.h + * Copyright (C) 1998 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ +#ifndef G10_DES_H +#define G10_DES_H + +#include "types.h" + + +const char * +des_get_info( int algo, size_t *keylen, + size_t *blocksize, size_t *contextsize, + int (**setkeyf)( void *c, byte *key, unsigned keylen ), + void (**encryptf)( void *c, byte *outbuf, byte *inbuf ), + void (**decryptf)( void *c, byte *outbuf, byte *inbuf ) + ); + +#endif /*G10_DES_H*/ diff --git a/cipher/dsa.c b/cipher/dsa.c new file mode 100644 index 000000000..d728a1b10 --- /dev/null +++ b/cipher/dsa.c @@ -0,0 +1,483 @@ +/* dsa.c - DSA signature algorithm + * Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + +#include <config.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include "util.h" +#include "mpi.h" +#include "cipher.h" +#include "dsa.h" + +typedef struct { + MPI p; /* prime */ + MPI q; /* group order */ + MPI g; /* group generator */ + MPI y; /* g^x mod p */ +} DSA_public_key; + + +typedef struct { + MPI p; /* prime */ + MPI q; /* group order */ + MPI g; /* group generator */ + MPI y; /* g^x mod p */ + MPI x; /* secret exponent */ +} DSA_secret_key; + + +static MPI gen_k( MPI q ); +static void test_keys( DSA_secret_key *sk, unsigned qbits ); +static int check_secret_key( DSA_secret_key *sk ); +static void generate( DSA_secret_key *sk, unsigned nbits, MPI **ret_factors ); +static void sign(MPI r, MPI s, MPI input, DSA_secret_key *skey); +static int verify(MPI r, MPI s, MPI input, DSA_public_key *pkey); + + +static void (*progress_cb) ( void *, int ); +static void *progress_cb_data; + +void +register_pk_dsa_progress ( void (*cb)( void *, int), void *cb_data ) +{ + progress_cb = cb; + progress_cb_data = cb_data; +} + + +static void +progress( int c ) +{ + if ( progress_cb ) + progress_cb ( progress_cb_data, c ); + else + fputc( c, stderr ); +} + + + +/**************** + * Generate a random secret exponent k less than q + */ +static MPI +gen_k( MPI q ) +{ + MPI k = mpi_alloc_secure( mpi_get_nlimbs(q) ); + unsigned int nbits = mpi_get_nbits(q); + unsigned int nbytes = (nbits+7)/8; + char *rndbuf = NULL; + + if( DBG_CIPHER ) + log_debug("choosing a random k "); + for(;;) { + if( DBG_CIPHER ) + progress('.'); + + if( !rndbuf || nbits < 32 ) { + m_free(rndbuf); + rndbuf = get_random_bits( nbits, 1, 1 ); + } + else { /* change only some of the higher bits */ + /* we could imporove this by directly requesting more memory + * at the first call to get_random_bits() and use this the here + * maybe it is easier to do this directly in random.c */ + char *pp = get_random_bits( 32, 1, 1 ); + memcpy( rndbuf,pp, 4 ); + m_free(pp); + } + mpi_set_buffer( k, rndbuf, nbytes, 0 ); + if( mpi_test_bit( k, nbits-1 ) ) + mpi_set_highbit( k, nbits-1 ); + else { + mpi_set_highbit( k, nbits-1 ); + mpi_clear_bit( k, nbits-1 ); + } + + if( !(mpi_cmp( k, q ) < 0) ) { /* check: k < q */ + if( DBG_CIPHER ) + progress('+'); + continue; /* no */ + } + if( !(mpi_cmp_ui( k, 0 ) > 0) ) { /* check: k > 0 */ + if( DBG_CIPHER ) + progress('-'); + continue; /* no */ + } + break; /* okay */ + } + m_free(rndbuf); + if( DBG_CIPHER ) + progress('\n'); + + return k; +} + + +static void +test_keys( DSA_secret_key *sk, unsigned qbits ) +{ + DSA_public_key pk; + MPI test = mpi_alloc( qbits / BITS_PER_MPI_LIMB ); + MPI out1_a = mpi_alloc( qbits / BITS_PER_MPI_LIMB ); + MPI out1_b = mpi_alloc( qbits / BITS_PER_MPI_LIMB ); + + pk.p = sk->p; + pk.q = sk->q; + pk.g = sk->g; + pk.y = sk->y; + /*mpi_set_bytes( test, qbits, get_random_byte, 0 );*/ + { char *p = get_random_bits( qbits, 0, 0 ); + mpi_set_buffer( test, p, (qbits+7)/8, 0 ); + m_free(p); + } + + sign( out1_a, out1_b, test, sk ); + if( !verify( out1_a, out1_b, test, &pk ) ) + log_fatal("DSA:: sign, verify failed\n"); + + mpi_free( test ); + mpi_free( out1_a ); + mpi_free( out1_b ); +} + + + +/**************** + * Generate a DSA key pair with a key of size NBITS + * Returns: 2 structures filled with all needed values + * and an array with the n-1 factors of (p-1) + */ +static void +generate( DSA_secret_key *sk, unsigned nbits, MPI **ret_factors ) +{ + MPI p; /* the prime */ + MPI q; /* the 160 bit prime factor */ + MPI g; /* the generator */ + MPI y; /* g^x mod p */ + MPI x; /* the secret exponent */ + MPI h, e; /* helper */ + unsigned qbits; + byte *rndbuf; + + assert( nbits >= 512 && nbits <= 1024 ); + + qbits = 160; + p = generate_elg_prime( 1, nbits, qbits, NULL, ret_factors ); + /* get q out of factors */ + q = mpi_copy((*ret_factors)[0]); + if( mpi_get_nbits(q) != qbits ) + BUG(); + + /* find a generator g (h and e are helpers)*/ + /* e = (p-1)/q */ + e = mpi_alloc( mpi_get_nlimbs(p) ); + mpi_sub_ui( e, p, 1 ); + mpi_fdiv_q( e, e, q ); + g = mpi_alloc( mpi_get_nlimbs(p) ); + h = mpi_alloc_set_ui( 1 ); /* we start with 2 */ + do { + mpi_add_ui( h, h, 1 ); + /* g = h^e mod p */ + mpi_powm( g, h, e, p ); + } while( !mpi_cmp_ui( g, 1 ) ); /* continue until g != 1 */ + + /* select a random number which has these properties: + * 0 < x < q-1 + * This must be a very good random number because this + * is the secret part. */ + if( DBG_CIPHER ) + log_debug("choosing a random x "); + assert( qbits >= 160 ); + x = mpi_alloc_secure( mpi_get_nlimbs(q) ); + mpi_sub_ui( h, q, 1 ); /* put q-1 into h */ + rndbuf = NULL; + do { + if( DBG_CIPHER ) + progress('.'); + if( !rndbuf ) + rndbuf = get_random_bits( qbits, 2, 1 ); + else { /* change only some of the higher bits (= 2 bytes)*/ + char *r = get_random_bits( 16, 2, 1 ); + memcpy(rndbuf, r, 16/8 ); + m_free(r); + } + mpi_set_buffer( x, rndbuf, (qbits+7)/8, 0 ); + mpi_clear_highbit( x, qbits+1 ); + } while( !( mpi_cmp_ui( x, 0 )>0 && mpi_cmp( x, h )<0 ) ); + m_free(rndbuf); + mpi_free( e ); + mpi_free( h ); + + /* y = g^x mod p */ + y = mpi_alloc( mpi_get_nlimbs(p) ); + mpi_powm( y, g, x, p ); + + if( DBG_CIPHER ) { + progress('\n'); + log_mpidump("dsa p= ", p ); + log_mpidump("dsa q= ", q ); + log_mpidump("dsa g= ", g ); + log_mpidump("dsa y= ", y ); + log_mpidump("dsa x= ", x ); + } + + /* copy the stuff to the key structures */ + sk->p = p; + sk->q = q; + sk->g = g; + sk->y = y; + sk->x = x; + + /* now we can test our keys (this should never fail!) */ + test_keys( sk, qbits ); +} + + + +/**************** + * Test whether the secret key is valid. + * Returns: if this is a valid key. + */ +static int +check_secret_key( DSA_secret_key *sk ) +{ + int rc; + MPI y = mpi_alloc( mpi_get_nlimbs(sk->y) ); + + mpi_powm( y, sk->g, sk->x, sk->p ); + rc = !mpi_cmp( y, sk->y ); + mpi_free( y ); + return rc; +} + + + +/**************** + * Make a DSA signature from HASH and put it into r and s. + * + * Without generating the k this function runs in + * about 26ms on a 300 Mhz Mobile Pentium + */ + +static void +sign(MPI r, MPI s, MPI hash, DSA_secret_key *skey ) +{ + MPI k; + MPI kinv; + MPI tmp; + + /* select a random k with 0 < k < q */ + k = gen_k( skey->q ); + + /* r = (a^k mod p) mod q */ + mpi_powm( r, skey->g, k, skey->p ); + mpi_fdiv_r( r, r, skey->q ); + + /* kinv = k^(-1) mod q */ + kinv = mpi_alloc( mpi_get_nlimbs(k) ); + mpi_invm(kinv, k, skey->q ); + + /* s = (kinv * ( hash + x * r)) mod q */ + tmp = mpi_alloc( mpi_get_nlimbs(skey->p) ); + mpi_mul( tmp, skey->x, r ); + mpi_add( tmp, tmp, hash ); + mpi_mulm( s , kinv, tmp, skey->q ); + + mpi_free(k); + mpi_free(kinv); + mpi_free(tmp); +} + + +/**************** + * Returns true if the signature composed from R and S is valid. + * + * Without the checks this function runs in + * about 31ms on a 300 Mhz Mobile Pentium + */ +static int +verify(MPI r, MPI s, MPI hash, DSA_public_key *pkey ) +{ + int rc; + MPI w, u1, u2, v; + MPI base[3]; + MPI exp[3]; + + + if( !(mpi_cmp_ui( r, 0 ) > 0 && mpi_cmp( r, pkey->q ) < 0) ) + return 0; /* assertion 0 < r < q failed */ + if( !(mpi_cmp_ui( s, 0 ) > 0 && mpi_cmp( s, pkey->q ) < 0) ) + return 0; /* assertion 0 < s < q failed */ + + w = mpi_alloc( mpi_get_nlimbs(pkey->q) ); + u1 = mpi_alloc( mpi_get_nlimbs(pkey->q) ); + u2 = mpi_alloc( mpi_get_nlimbs(pkey->q) ); + v = mpi_alloc( mpi_get_nlimbs(pkey->p) ); + + /* w = s^(-1) mod q */ + mpi_invm( w, s, pkey->q ); + + /* u1 = (hash * w) mod q */ + mpi_mulm( u1, hash, w, pkey->q ); + + /* u2 = r * w mod q */ + mpi_mulm( u2, r, w, pkey->q ); + + /* v = g^u1 * y^u2 mod p mod q */ + base[0] = pkey->g; exp[0] = u1; + base[1] = pkey->y; exp[1] = u2; + base[2] = NULL; exp[2] = NULL; + mpi_mulpowm( v, base, exp, pkey->p ); + mpi_fdiv_r( v, v, pkey->q ); + + rc = !mpi_cmp( v, r ); + + mpi_free(w); + mpi_free(u1); + mpi_free(u2); + mpi_free(v); + return rc; +} + + +/********************************************* + ************** interface ****************** + *********************************************/ + +int +dsa_generate( int algo, unsigned nbits, MPI *skey, MPI **retfactors ) +{ + DSA_secret_key sk; + + if( algo != PUBKEY_ALGO_DSA ) + return G10ERR_PUBKEY_ALGO; + + generate( &sk, nbits, retfactors ); + skey[0] = sk.p; + skey[1] = sk.q; + skey[2] = sk.g; + skey[3] = sk.y; + skey[4] = sk.x; + return 0; +} + + +int +dsa_check_secret_key( int algo, MPI *skey ) +{ + DSA_secret_key sk; + + if( algo != PUBKEY_ALGO_DSA ) + return G10ERR_PUBKEY_ALGO; + if( !skey[0] || !skey[1] || !skey[2] || !skey[3] || !skey[4] ) + return G10ERR_BAD_MPI; + + sk.p = skey[0]; + sk.q = skey[1]; + sk.g = skey[2]; + sk.y = skey[3]; + sk.x = skey[4]; + if( !check_secret_key( &sk ) ) + return G10ERR_BAD_SECKEY; + + return 0; +} + + + +int +dsa_sign( int algo, MPI *resarr, MPI data, MPI *skey ) +{ + DSA_secret_key sk; + + if( algo != PUBKEY_ALGO_DSA ) + return G10ERR_PUBKEY_ALGO; + if( !data || !skey[0] || !skey[1] || !skey[2] || !skey[3] || !skey[4] ) + return G10ERR_BAD_MPI; + + sk.p = skey[0]; + sk.q = skey[1]; + sk.g = skey[2]; + sk.y = skey[3]; + sk.x = skey[4]; + resarr[0] = mpi_alloc( mpi_get_nlimbs( sk.p ) ); + resarr[1] = mpi_alloc( mpi_get_nlimbs( sk.p ) ); + sign( resarr[0], resarr[1], data, &sk ); + return 0; +} + +int +dsa_verify( int algo, MPI hash, MPI *data, MPI *pkey, + int (*cmp)(void *, MPI), void *opaquev ) +{ + DSA_public_key pk; + + if( algo != PUBKEY_ALGO_DSA ) + return G10ERR_PUBKEY_ALGO; + if( !data[0] || !data[1] || !hash + || !pkey[0] || !pkey[1] || !pkey[2] || !pkey[3] ) + return G10ERR_BAD_MPI; + + pk.p = pkey[0]; + pk.q = pkey[1]; + pk.g = pkey[2]; + pk.y = pkey[3]; + if( !verify( data[0], data[1], hash, &pk ) ) + return G10ERR_BAD_SIGN; + return 0; +} + + + +unsigned +dsa_get_nbits( int algo, MPI *pkey ) +{ + if( algo != PUBKEY_ALGO_DSA ) + return 0; + return mpi_get_nbits( pkey[0] ); +} + + +/**************** + * Return some information about the algorithm. We need algo here to + * distinguish different flavors of the algorithm. + * Returns: A pointer to string describing the algorithm or NULL if + * the ALGO is invalid. + * Usage: Bit 0 set : allows signing + * 1 set : allows encryption + */ +const char * +dsa_get_info( int algo, int *npkey, int *nskey, int *nenc, int *nsig, + int *use ) +{ + *npkey = 4; + *nskey = 5; + *nenc = 0; + *nsig = 2; + + switch( algo ) { + case PUBKEY_ALGO_DSA: *use = PUBKEY_USAGE_SIG; return "DSA"; + default: *use = 0; return NULL; + } +} + + diff --git a/cipher/dsa.h b/cipher/dsa.h new file mode 100644 index 000000000..89fd1f5a0 --- /dev/null +++ b/cipher/dsa.h @@ -0,0 +1,32 @@ +/* dsa.h - DSA signature algorithm + * Copyright (C) 1998 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ +#ifndef G10_DSA_H +#define G10_DSA_H + +int dsa_generate( int algo, unsigned nbits, MPI *skey, MPI **retfactors ); +int dsa_check_secret_key( int algo, MPI *skey ); +int dsa_sign( int algo, MPI *resarr, MPI data, MPI *skey ); +int dsa_verify( int algo, MPI hash, MPI *data, MPI *pkey, + int (*cmp)(void *, MPI), void *opaquev ); +unsigned dsa_get_nbits( int algo, MPI *pkey ); +const char *dsa_get_info( int algo, int *npkey, int *nskey, + int *nenc, int *nsig, int *use ); + +#endif /*G10_DSA_H*/ diff --git a/cipher/dynload.c b/cipher/dynload.c new file mode 100644 index 000000000..09cd1366a --- /dev/null +++ b/cipher/dynload.c @@ -0,0 +1,681 @@ +/* dynload.c - load cipher extensions + * Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + +#include <config.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#ifdef HAVE_DL_DLOPEN + #include <dlfcn.h> +#elif defined(HAVE_DLD_DLD_LINK) + #include <dld.h> +#elif defined(HAVE_DL_SHL_LOAD) + #include <dl.h> + #include <errno.h> +#endif +#ifdef __MINGW32__ + #include <windows.h> +#endif +#include "util.h" +#include "cipher.h" +#include "dynload.h" + +#ifdef WITH_SYMBOL_UNDERSCORE + #define SYMBOL_VERSION "_gnupgext_version" + #define SYMBOL_ENUM "_gnupgext_enum_func" +#else + #define SYMBOL_VERSION "gnupgext_version" + #define SYMBOL_ENUM "gnupgext_enum_func" +#endif + + +#ifndef RTLD_NOW + #define RTLD_NOW 1 +#endif + +#ifdef HAVE_DL_SHL_LOAD /* HPUX has shl_load instead of dlopen */ +#define HAVE_DL_DLOPEN +#define dlopen(PATHNAME,MODE) \ + ((void *) shl_load(PATHNAME, DYNAMIC_PATH | \ + (((MODE) & RTLD_NOW) ? BIND_IMMEDIATE : BIND_DEFERRED), 0L)) +#define dlclose(HANDLE) shl_unload((shl_t) (HANDLE)) +#define dlerror() (errno == 0 ? NULL : strerror(errno)) + +static void * +dlsym(void *handle, char *name) +{ + void *addr; + if (shl_findsym((shl_t *)&handle,name,(short)TYPE_UNDEFINED,&addr) != 0) { + return NULL; + } + return addr; +} +#endif /*HAVE_DL_SHL_LOAD*/ + +#ifdef __MINGW32__ +#define HAVE_DL_DLOPEN +#define USE_DYNAMIC_LINKING + +static int last_error = 0; + +void* +dlopen(const char *pathname, int mode) +{ + void *h = LoadLibrary( pathname ); + if (!h) { + log_error( "LoadLibrary failed ec=%d\n", (int)GetLastError() ); + last_error = 1; + return NULL; + } + return h; +} + +int +dlclose( void *handle ) +{ + last_error = 0; + return FreeLibrary( handle ); +} + +char* +dlerror(void) +{ + static char dlerrstr[10]; + if (last_error) { + sprintf(dlerrstr, "%d", (int)GetLastError() ); + return dlerrstr; + } + return NULL; +} + +void* +dlsym( void *handle, const char *name ) +{ + void *h = GetProcAddress( handle, name ); + if (!h) { + log_error( "GetProcAddress failed ec=%d\n", (int)GetLastError() ); + last_error = 1; + return NULL; + } + return h; +} +#endif /*__MINGW32__*/ + + + + + +typedef struct ext_list { + struct ext_list *next; + int internal; + #ifdef HAVE_DL_DLOPEN + void *handle; /* handle from dlopen() */ + #else + int handle; /* if the function has been loaded, this is true */ + #endif + int failed; /* already tried but failed */ + void * (*enumfunc)(int, int*, int*, int*); + char *hintstr; /* pointer into name */ + char name[1]; +} *EXTLIST; + +static EXTLIST extensions; + +typedef struct { + EXTLIST r; + int seq1; + int seq2; + void *sym; + int reqalgo; +} ENUMCONTEXT; + + +#ifdef HAVE_DLD_DLD_LINK +static char *mainpgm_path; +static int did_dld_init; +static int dld_available; +#endif + + +/**************** + * Register an extension module. The last registered module will + * be loaded first. A name may have a list of classes + * appended; e.g: + * mymodule.so(1:17,3:20,3:109) + * means that this module provides digest algorithm 17 and public key + * algorithms 20 and 109. This is only a hint but if it is there the + * loader may decide to only load a module which claims to have a + * requested algorithm. + * + * mainpgm is the path to the program which wants to load a module + * it is only used in some environments. + */ +void +register_cipher_extension( const char *mainpgm, const char *fname ) +{ + EXTLIST r, el, intex; + char *p, *pe; + + #ifdef HAVE_DLD_DLD_LINK + if( !mainpgm_path && mainpgm && *mainpgm ) + mainpgm_path = m_strdup(mainpgm); + #endif + if( *fname != DIRSEP_C ) { /* do tilde expansion etc */ + char *tmp; + + if( strchr(fname, DIRSEP_C) ) + tmp = make_filename(fname, NULL); + else + tmp = make_filename(GNUPG_LIBDIR, fname, NULL); + el = m_alloc_clear( sizeof *el + strlen(tmp) ); + strcpy(el->name, tmp ); + m_free(tmp); + } + else { + el = m_alloc_clear( sizeof *el + strlen(fname) ); + strcpy(el->name, fname ); + } + /* check whether we have a class hint */ + if( (p=strchr(el->name,'(')) && (pe=strchr(p+1,')')) && !pe[1] ) { + *p = *pe = 0; + el->hintstr = p+1; + } + else + el->hintstr = NULL; + + /* check that it is not already registered */ + intex = NULL; + for(r = extensions; r; r = r->next ) { + if( !compare_filenames(r->name, el->name) ) { + log_info("extension `%s' already registered\n", el->name ); + m_free(el); + return; + } + else if( r->internal ) + intex = r; + } + /* and register */ + /* we put them after the internal extension modules */ + /* this is so that the external modules do not get loaded */ + /* as soon as the internal modules are requested */ + if( intex ) { + el->next = intex->next; + intex->next = el; + } + else { + el->next = extensions; + extensions = el; + } +} + +void +register_internal_cipher_extension( + const char *module_id, + void * (*enumfunc)(int, int*, int*, int*) + ) +{ + EXTLIST r, el; + + el = m_alloc_clear( sizeof *el + strlen(module_id) ); + strcpy(el->name, module_id ); + el->internal = 1; + + /* check that it is not already registered */ + for(r = extensions; r; r = r->next ) { + if( !compare_filenames(r->name, el->name) ) { + log_info("extension `%s' already registered\n", el->name ); + m_free(el); + return; + } + } + /* and register */ + el->enumfunc = enumfunc; + #ifdef HAVE_DL_DLOPEN + el->handle = (void*)1; + #else + el->handle = 1; + #endif + el->next = extensions; + extensions = el; +} + + +static int +load_extension( EXTLIST el ) +{ + #ifdef USE_DYNAMIC_LINKING + char **name; + #ifdef HAVE_DL_DLOPEN + const char *err; + int seq = 0; + int class, vers; + void *sym; + #else + unsigned long addr; + int rc; + #endif + + #ifndef __MINGW32__ + /* make sure we are not setuid */ + if( getuid() != geteuid() ) + log_bug("trying to load an extension while still setuid\n"); + #endif + + /* now that we are not setuid anymore, we can safely load modules */ + #ifdef HAVE_DL_DLOPEN + el->handle = dlopen(el->name, RTLD_NOW); + if( !el->handle ) { + log_error("%s: error loading extension: %s\n", el->name, dlerror() ); + goto failure; + } + name = (char**)dlsym(el->handle, SYMBOL_VERSION); + if( (err=dlerror()) ) { + log_error("%s: not a gnupg extension: %s\n", el->name, err ); + goto failure; + } + #else /* have dld */ + if( !did_dld_init ) { + did_dld_init = 1; + if( !mainpgm_path ) + log_error("DLD is not correctly initialized\n"); + else { + rc = dld_init( dld_find_executable(mainpgm_path) ); + if( rc ) + log_error("DLD init failed: %s\n", dld_strerror(rc) ); + else + dld_available = 1; + } + } + if( !dld_available ) { + log_error("%s: DLD not available\n", el->name ); + goto failure; + } + + rc = dld_link( el->name ); + if( rc ) { + log_error("%s: error loading extension: %s\n", + el->name, dld_strerror(rc) ); + goto failure; + } + addr = dld_get_symbol(SYMBOL_VERSION); + if( !addr ) { + log_error("%s: not a gnupg extension: %s\n", + el->name, dld_strerror(dld_errno) ); + goto failure; + } + name = (char**)addr; + #endif + + if( g10_opt_verbose > 1 ) + log_info("%s: %s%s%s%s\n", el->name, *name, + el->hintstr? " (":"", + el->hintstr? el->hintstr:"", + el->hintstr? ")":""); + + #ifdef HAVE_DL_DLOPEN + sym = dlsym(el->handle, SYMBOL_ENUM); + if( (err=dlerror()) ) { + log_error("%s: invalid gnupg extension: %s\n", el->name, err ); + goto failure; + } + el->enumfunc = (void *(*)(int,int*,int*,int*))sym; + #else /* dld */ + addr = dld_get_func(SYMBOL_ENUM); + if( !addr ) { + log_error("%s: invalid gnupg extension: %s\n", + el->name, dld_strerror(dld_errno) ); + goto failure; + } + rc = dld_function_executable_p(SYMBOL_ENUM); + if( rc ) { + log_error("%s: extension function is not executable: %s\n", + el->name, dld_strerror(rc) ); + goto failure; + } + el->enumfunc = (void *(*)(int,int*,int*,int*))addr; + el->handle = 1; /* mark as usable */ + #endif + + #ifdef HAVE_DL_DLOPEN + if( g10_opt_verbose > 2 ) { + /* list the contents of the module */ + while( (sym = (*el->enumfunc)(0, &seq, &class, &vers)) ) { + if( vers != 1 ) { + log_info("%s: ignoring func with version %d\n",el->name,vers); + continue; + } + switch( class ) { + case 11: + case 21: + case 31: + log_info("%s: provides %s algorithm %d\n", el->name, + class == 11? "md" : + class == 21? "cipher" : "pubkey", + *(int*)sym); + break; + default: + /*log_debug("%s: skipping class %d\n", el->name, class);*/ + break; + } + } + } + #endif + return 0; + + failure: + #ifdef HAVE_DL_DLOPEN + if( el->handle ) { + dlclose(el->handle); + el->handle = NULL; + } + #endif + el->failed = 1; + #endif /*USE_DYNAMIC_LINKING*/ + return -1; +} + +#ifdef __riscos__ +typedef +const char *(*DIGESTS_CAST)(int, size_t*,byte**, int*, int*, + void (**)(void*), + void (**)(void*,byte*,size_t), + void (**)(void*),byte *(**)(void*)); +#endif /* __riscos__ */ + +int +enum_gnupgext_digests( void **enum_context, + int *algo, + const char *(**r_get_info)( int, size_t*,byte**, int*, int*, + void (**)(void*), + void (**)(void*,byte*,size_t), + void (**)(void*),byte *(**)(void*)) ) +{ + EXTLIST r; + ENUMCONTEXT *ctx; + + if( !*enum_context ) { /* init context */ + ctx = m_alloc_clear( sizeof( *ctx ) ); + ctx->r = extensions; + ctx->reqalgo = *algo; + *enum_context = ctx; + } + else if( !algo ) { /* release the context */ + m_free(*enum_context); + *enum_context = NULL; + return 0; + } + else + ctx = *enum_context; + + for( r = ctx->r; r; r = r->next ) { + int class, vers; + + if( r->failed ) + continue; + if( !r->handle && load_extension(r) ) + continue; + /* get a digest info function */ + if( ctx->sym ) + goto inner_loop; + while( (ctx->sym = (*r->enumfunc)(10, &ctx->seq1, &class, &vers)) ) { + void *sym; + /* must check class because enumfunc may be wrong coded */ + if( vers != 1 || class != 10 ) + continue; + inner_loop: +#ifndef __riscos__ + *r_get_info = ctx->sym; +#else /* __riscos__ */ + *r_get_info = (DIGESTS_CAST) ctx->sym; +#endif /* __riscos__ */ + while( (sym = (*r->enumfunc)(11, &ctx->seq2, &class, &vers)) ) { + if( vers != 1 || class != 11 ) + continue; + *algo = *(int*)sym; + ctx->r = r; + return 1; + } + ctx->seq2 = 0; + } + ctx->seq1 = 0; + } + ctx->r = r; + return 0; +} + +#ifdef __riscos__ +typedef +const char *(*CIPHERS_CAST)(int, size_t*, size_t*, size_t*, + int (**)( void *, byte *, unsigned), + void (**)( void *, byte *, byte *), + void (**)( void *, byte *, byte *)); +#endif /* __riscos__ */ + +const char * +enum_gnupgext_ciphers( void **enum_context, int *algo, + size_t *keylen, size_t *blocksize, size_t *contextsize, + int (**setkeyf)( void *c, byte *key, unsigned keylen ), + void (**encryptf)( void *c, byte *outbuf, byte *inbuf ), + void (**decryptf)( void *c, byte *outbuf, byte *inbuf ) + ) +{ + EXTLIST r; + ENUMCONTEXT *ctx; + const char * (*finfo)(int, size_t*, size_t*, size_t*, + int (**)( void *, byte *, unsigned), + void (**)( void *, byte *, byte *), + void (**)( void *, byte *, byte *)); + + if( !*enum_context ) { /* init context */ + ctx = m_alloc_clear( sizeof( *ctx ) ); + ctx->r = extensions; + *enum_context = ctx; + } + else if( !algo ) { /* release the context */ + m_free(*enum_context); + *enum_context = NULL; + return NULL; + } + else + ctx = *enum_context; + + for( r = ctx->r; r; r = r->next ) { + int class, vers; + + if( r->failed ) + continue; + if( !r->handle && load_extension(r) ) + continue; + /* get a cipher info function */ + if( ctx->sym ) + goto inner_loop; + while( (ctx->sym = (*r->enumfunc)(20, &ctx->seq1, &class, &vers)) ) { + void *sym; + /* must check class because enumfunc may be wrong coded */ + if( vers != 1 || class != 20 ) + continue; + inner_loop: +#ifndef __riscos__ + finfo = ctx->sym; +#else /* __riscos__ */ + finfo = (CIPHERS_CAST) ctx->sym; +#endif /* __riscos__ */ + while( (sym = (*r->enumfunc)(21, &ctx->seq2, &class, &vers)) ) { + const char *algname; + if( vers != 1 || class != 21 ) + continue; + *algo = *(int*)sym; + algname = (*finfo)( *algo, keylen, blocksize, contextsize, + setkeyf, encryptf, decryptf ); + if( algname ) { + ctx->r = r; + return algname; + } + } + ctx->seq2 = 0; + } + ctx->seq1 = 0; + } + ctx->r = r; + return NULL; +} + +#ifdef __riscos__ +typedef +const char *(*PUBKEYS_CAST)(int, int *, int *, int *, int *, int *, + int (**)(int, unsigned, MPI *, MPI **), + int (**)(int, MPI *), + int (**)(int, MPI *, MPI , MPI *), + int (**)(int, MPI *, MPI *, MPI *), + int (**)(int, MPI *, MPI , MPI *), + int (**)(int, MPI , MPI *, MPI *, + int (*)(void*,MPI), void *), + unsigned (**)( int , MPI *)); +#endif /* __riscos__ */ + +const char * +enum_gnupgext_pubkeys( void **enum_context, int *algo, + int *npkey, int *nskey, int *nenc, int *nsig, int *use, + int (**generate)( int algo, unsigned nbits, MPI *skey, MPI **retfactors ), + int (**check_secret_key)( int algo, MPI *skey ), + int (**encryptf)( int algo, MPI *resarr, MPI data, MPI *pkey ), + int (**decryptf)( int algo, MPI *result, MPI *data, MPI *skey ), + int (**sign)( int algo, MPI *resarr, MPI data, MPI *skey ), + int (**verify)( int algo, MPI hash, MPI *data, MPI *pkey, + int (*cmp)(void *, MPI), void *opaquev ), + unsigned (**get_nbits)( int algo, MPI *pkey ) ) +{ + EXTLIST r; + ENUMCONTEXT *ctx; + const char * (*finfo)( int, int *, int *, int *, int *, int *, + int (**)( int, unsigned, MPI *, MPI **), + int (**)( int, MPI * ), + int (**)( int, MPI *, MPI , MPI * ), + int (**)( int, MPI *, MPI *, MPI * ), + int (**)( int, MPI *, MPI , MPI * ), + int (**)( int, MPI , MPI *, MPI *, + int (*)(void*,MPI), void *), + unsigned (**)( int , MPI * ) ); + + if( !*enum_context ) { /* init context */ + ctx = m_alloc_clear( sizeof( *ctx ) ); + ctx->r = extensions; + *enum_context = ctx; + } + else if( !algo ) { /* release the context */ + m_free(*enum_context); + *enum_context = NULL; + return NULL; + } + else + ctx = *enum_context; + + for( r = ctx->r; r; r = r->next ) { + int class, vers; + + if( r->failed ) + continue; + if( !r->handle && load_extension(r) ) + continue; + /* get a pubkey info function */ + if( ctx->sym ) + goto inner_loop; + while( (ctx->sym = (*r->enumfunc)(30, &ctx->seq1, &class, &vers)) ) { + void *sym; + if( vers != 1 || class != 30 ) + continue; + inner_loop: +#ifndef __riscos__ + finfo = ctx->sym; +#else /* __riscos__ */ + finfo = (PUBKEYS_CAST) ctx->sym; +#endif /* __riscos__ */ + while( (sym = (*r->enumfunc)(31, &ctx->seq2, &class, &vers)) ) { + const char *algname; + if( vers != 1 || class != 31 ) + continue; + *algo = *(int*)sym; + algname = (*finfo)( *algo, npkey, nskey, nenc, nsig, use, + generate, check_secret_key, encryptf, + decryptf, sign, verify, get_nbits ); + if( algname ) { + ctx->r = r; + return algname; + } + } + ctx->seq2 = 0; + } + ctx->seq1 = 0; + } + ctx->r = r; + return NULL; +} + + +int (* +dynload_getfnc_gather_random())(void (*)(const void*, size_t, int), int, + size_t, int) +{ + EXTLIST r; + void *sym; + + for( r = extensions; r; r = r->next ) { + int seq, class, vers; + + if( r->failed ) + continue; + if( !r->handle && load_extension(r) ) + continue; + seq = 0; + while( (sym = (*r->enumfunc)(40, &seq, &class, &vers)) ) { + if( vers != 1 || class != 40 ) + continue; + return (int (*)(void (*)(const void*, size_t, int), int, + size_t, int))sym; + } + } + return NULL; +} + + +void (* +dynload_getfnc_fast_random_poll())( void (*)(const void*, size_t, int), int) +{ + EXTLIST r; + void *sym; + + for( r = extensions; r; r = r->next ) { + int seq, class, vers; + + if( r->failed ) + continue; + if( !r->handle && load_extension(r) ) + continue; + seq = 0; + while( (sym = (*r->enumfunc)(41, &seq, &class, &vers)) ) { + if( vers != 1 || class != 41 ) + continue; + return (void (*)( void (*)(const void*, size_t, int), int))sym; + } + } + return NULL; +} + diff --git a/cipher/dynload.h b/cipher/dynload.h new file mode 100644 index 000000000..328a7197b --- /dev/null +++ b/cipher/dynload.h @@ -0,0 +1,68 @@ +/* dynload.h + * Copyright (C) 1998 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ +#ifndef G10_CIPHER_DYNLOAD_H +#define G10_CIPHER_DYNLOAD_H + +#include "mpi.h" + + +void register_internal_cipher_extension( const char *module_id, + void * (*enumfunc)(int, int*, int*, int*) ); + +int +enum_gnupgext_digests( void **enum_context, + int *algo, + const char *(**r_get_info)( int, size_t*,byte**, int*, int*, + void (**)(void*), + void (**)(void*,byte*,size_t), + void (**)(void*),byte *(**)(void*)) ); + +const char * +enum_gnupgext_ciphers( void **enum_context, int *algo, + size_t *keylen, size_t *blocksize, size_t *contextsize, + int (**setkeyf)( void *c, byte *key, unsigned keylen ), + void (**encryptf)( void *c, byte *outbuf, byte *inbuf ), + void (**decryptf)( void *c, byte *outbuf, byte *inbuf ) + ); + + +const char * +enum_gnupgext_pubkeys( void **enum_context, int *algo, + int *npkey, int *nskey, int *nenc, int *nsig, int *use, + int (**generate)( int algo, unsigned nbits, MPI *skey, MPI **retfactors ), + int (**check_secret_key)( int algo, MPI *skey ), + int (**encryptf)( int algo, MPI *resarr, MPI data, MPI *pkey ), + int (**decryptf)( int algo, MPI *result, MPI *data, MPI *skey ), + int (**sign)( int algo, MPI *resarr, MPI data, MPI *skey ), + int (**verify)( int algo, MPI hash, MPI *data, MPI *pkey, + int (*cmp)(void *, MPI), void *opaquev ), + unsigned (**get_nbits)( int algo, MPI *pkey ) ); + + +int (*dynload_getfnc_gather_random(void))( void (*)(const void*, size_t, int), + int, size_t, int); +void (*dynload_getfnc_fast_random_poll(void) + )( void (*)(const void*, size_t, int), int ); + + +/** This function is in construct.c **/ +void cipher_modules_constructor(void); + +#endif /*G10_CIPHER_DYNLOAD_H*/ diff --git a/cipher/elgamal.c b/cipher/elgamal.c new file mode 100644 index 000000000..b4563cd58 --- /dev/null +++ b/cipher/elgamal.c @@ -0,0 +1,666 @@ +/* elgamal.c - ElGamal Public Key encryption + * Copyright (C) 1998, 2000, 2001 Free Software Foundation, Inc. + * + * For a description of the algorithm, see: + * Bruce Schneier: Applied Cryptography. John Wiley & Sons, 1996. + * ISBN 0-471-11709-9. Pages 476 ff. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + +#include <config.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include "util.h" +#include "mpi.h" +#include "cipher.h" +#include "elgamal.h" + +typedef struct { + MPI p; /* prime */ + MPI g; /* group generator */ + MPI y; /* g^x mod p */ +} ELG_public_key; + + +typedef struct { + MPI p; /* prime */ + MPI g; /* group generator */ + MPI y; /* g^x mod p */ + MPI x; /* secret exponent */ +} ELG_secret_key; + + +static void test_keys( ELG_secret_key *sk, unsigned nbits ); +static MPI gen_k( MPI p ); +static void generate( ELG_secret_key *sk, unsigned nbits, MPI **factors ); +static int check_secret_key( ELG_secret_key *sk ); +static void do_encrypt(MPI a, MPI b, MPI input, ELG_public_key *pkey ); +static void decrypt(MPI output, MPI a, MPI b, ELG_secret_key *skey ); +static void sign(MPI a, MPI b, MPI input, ELG_secret_key *skey); +static int verify(MPI a, MPI b, MPI input, ELG_public_key *pkey); + + +static void (*progress_cb) ( void *, int ); +static void *progress_cb_data; + +void +register_pk_elg_progress ( void (*cb)( void *, int), void *cb_data ) +{ + progress_cb = cb; + progress_cb_data = cb_data; +} + + +static void +progress( int c ) +{ + if ( progress_cb ) + progress_cb ( progress_cb_data, c ); + else + fputc( c, stderr ); +} + + +/**************** + * Michael Wiener's table about subgroup sizes to match field sizes + * (floating around somewhere - Fixme: need a reference) + */ +static unsigned int +wiener_map( unsigned int n ) +{ + static struct { unsigned int p_n, q_n; } t[] = + { /* p q attack cost */ + { 512, 119 }, /* 9 x 10^17 */ + { 768, 145 }, /* 6 x 10^21 */ + { 1024, 165 }, /* 7 x 10^24 */ + { 1280, 183 }, /* 3 x 10^27 */ + { 1536, 198 }, /* 7 x 10^29 */ + { 1792, 212 }, /* 9 x 10^31 */ + { 2048, 225 }, /* 8 x 10^33 */ + { 2304, 237 }, /* 5 x 10^35 */ + { 2560, 249 }, /* 3 x 10^37 */ + { 2816, 259 }, /* 1 x 10^39 */ + { 3072, 269 }, /* 3 x 10^40 */ + { 3328, 279 }, /* 8 x 10^41 */ + { 3584, 288 }, /* 2 x 10^43 */ + { 3840, 296 }, /* 4 x 10^44 */ + { 4096, 305 }, /* 7 x 10^45 */ + { 4352, 313 }, /* 1 x 10^47 */ + { 4608, 320 }, /* 2 x 10^48 */ + { 4864, 328 }, /* 2 x 10^49 */ + { 5120, 335 }, /* 3 x 10^50 */ + { 0, 0 } + }; + int i; + + for(i=0; t[i].p_n; i++ ) { + if( n <= t[i].p_n ) + return t[i].q_n; + } + /* not in table - use some arbitrary high number ;-) */ + return n / 8 + 200; +} + +static void +test_keys( ELG_secret_key *sk, unsigned nbits ) +{ + ELG_public_key pk; + MPI test = mpi_alloc( 0 ); + MPI out1_a = mpi_alloc( nbits / BITS_PER_MPI_LIMB ); + MPI out1_b = mpi_alloc( nbits / BITS_PER_MPI_LIMB ); + MPI out2 = mpi_alloc( nbits / BITS_PER_MPI_LIMB ); + + pk.p = sk->p; + pk.g = sk->g; + pk.y = sk->y; + + /*mpi_set_bytes( test, nbits, get_random_byte, 0 );*/ + { char *p = get_random_bits( nbits, 0, 0 ); + mpi_set_buffer( test, p, (nbits+7)/8, 0 ); + m_free(p); + } + + do_encrypt( out1_a, out1_b, test, &pk ); + decrypt( out2, out1_a, out1_b, sk ); + if( mpi_cmp( test, out2 ) ) + log_fatal("ElGamal operation: encrypt, decrypt failed\n"); + + sign( out1_a, out1_b, test, sk ); + if( !verify( out1_a, out1_b, test, &pk ) ) + log_fatal("ElGamal operation: sign, verify failed\n"); + + mpi_free( test ); + mpi_free( out1_a ); + mpi_free( out1_b ); + mpi_free( out2 ); +} + + +/**************** + * generate a random secret exponent k from prime p, so + * that k is relatively prime to p-1 + */ +static MPI +gen_k( MPI p ) +{ + MPI k = mpi_alloc_secure( 0 ); + MPI temp = mpi_alloc( mpi_get_nlimbs(p) ); + MPI p_1 = mpi_copy(p); + unsigned int orig_nbits = mpi_get_nbits(p); + unsigned int nbits; + unsigned int nbytes; + char *rndbuf = NULL; + + /* IMO using a k much lesser than p is sufficient and it greatly + * improves the encryption performance. We use Wiener's table + * and add a large safety margin. + */ + nbits = wiener_map( orig_nbits ) * 3 / 2; + if( nbits >= orig_nbits ) + BUG(); + + nbytes = (nbits+7)/8; + if( DBG_CIPHER ) + log_debug("choosing a random k of %u bits", nbits); + mpi_sub_ui( p_1, p, 1); + for(;;) { + if( !rndbuf || nbits < 32 ) { + m_free(rndbuf); + rndbuf = get_random_bits( nbits, 1, 1 ); + } + else { /* change only some of the higher bits */ + /* we could impprove this by directly requesting more memory + * at the first call to get_random_bits() and use this the here + * maybe it is easier to do this directly in random.c + * Anyway, it is highly inlikely that we will ever reach this code + */ + char *pp = get_random_bits( 32, 1, 1 ); + memcpy( rndbuf,pp, 4 ); + m_free(pp); + log_debug("gen_k: tsss, never expected to reach this\n"); + } + mpi_set_buffer( k, rndbuf, nbytes, 0 ); + + for(;;) { + /* Hmm, actually we don't need this step here + * because we use k much smaller than p - we do it anyway + * just in case the keep on adding a one to k ;) */ + if( !(mpi_cmp( k, p_1 ) < 0) ) { /* check: k < (p-1) */ + if( DBG_CIPHER ) + progress('+'); + break; /* no */ + } + if( !(mpi_cmp_ui( k, 0 ) > 0) ) { /* check: k > 0 */ + if( DBG_CIPHER ) + progress('-'); + break; /* no */ + } + if( mpi_gcd( temp, k, p_1 ) ) + goto found; /* okay, k is relatively prime to (p-1) */ + mpi_add_ui( k, k, 1 ); + if( DBG_CIPHER ) + progress('.'); + } + } + found: + m_free(rndbuf); + if( DBG_CIPHER ) + progress('\n'); + mpi_free(p_1); + mpi_free(temp); + + return k; +} + +/**************** + * Generate a key pair with a key of size NBITS + * Returns: 2 structures filles with all needed values + * and an array with n-1 factors of (p-1) + */ +static void +generate( ELG_secret_key *sk, unsigned int nbits, MPI **ret_factors ) +{ + MPI p; /* the prime */ + MPI p_min1; + MPI g; + MPI x; /* the secret exponent */ + MPI y; + MPI temp; + unsigned int qbits; + unsigned int xbits; + byte *rndbuf; + + p_min1 = mpi_alloc( (nbits+BITS_PER_MPI_LIMB-1)/BITS_PER_MPI_LIMB ); + temp = mpi_alloc( (nbits+BITS_PER_MPI_LIMB-1)/BITS_PER_MPI_LIMB ); + qbits = wiener_map( nbits ); + if( qbits & 1 ) /* better have a even one */ + qbits++; + g = mpi_alloc(1); + p = generate_elg_prime( 0, nbits, qbits, g, ret_factors ); + mpi_sub_ui(p_min1, p, 1); + + + /* select a random number which has these properties: + * 0 < x < p-1 + * This must be a very good random number because this is the + * secret part. The prime is public and may be shared anyway, + * so a random generator level of 1 is used for the prime. + * + * I don't see a reason to have a x of about the same size + * as the p. It should be sufficient to have one about the size + * of q or the later used k plus a large safety margin. Decryption + * will be much faster with such an x. + */ + xbits = qbits * 3 / 2; + if( xbits >= nbits ) + BUG(); + x = mpi_alloc_secure( xbits/BITS_PER_MPI_LIMB ); + if( DBG_CIPHER ) + log_debug("choosing a random x of size %u", xbits ); + rndbuf = NULL; + do { + if( DBG_CIPHER ) + progress('.'); + if( rndbuf ) { /* change only some of the higher bits */ + if( xbits < 16 ) {/* should never happen ... */ + m_free(rndbuf); + rndbuf = get_random_bits( xbits, 2, 1 ); + } + else { + char *r = get_random_bits( 16, 2, 1 ); + memcpy(rndbuf, r, 16/8 ); + m_free(r); + } + } + else + rndbuf = get_random_bits( xbits, 2, 1 ); + mpi_set_buffer( x, rndbuf, (xbits+7)/8, 0 ); + mpi_clear_highbit( x, xbits+1 ); + } while( !( mpi_cmp_ui( x, 0 )>0 && mpi_cmp( x, p_min1 )<0 ) ); + m_free(rndbuf); + + y = mpi_alloc(nbits/BITS_PER_MPI_LIMB); + mpi_powm( y, g, x, p ); + + if( DBG_CIPHER ) { + progress('\n'); + log_mpidump("elg p= ", p ); + log_mpidump("elg g= ", g ); + log_mpidump("elg y= ", y ); + log_mpidump("elg x= ", x ); + } + + /* copy the stuff to the key structures */ + sk->p = p; + sk->g = g; + sk->y = y; + sk->x = x; + + /* now we can test our keys (this should never fail!) */ + test_keys( sk, nbits - 64 ); + + mpi_free( p_min1 ); + mpi_free( temp ); +} + + +/**************** + * Test whether the secret key is valid. + * Returns: if this is a valid key. + */ +static int +check_secret_key( ELG_secret_key *sk ) +{ + int rc; + MPI y = mpi_alloc( mpi_get_nlimbs(sk->y) ); + + mpi_powm( y, sk->g, sk->x, sk->p ); + rc = !mpi_cmp( y, sk->y ); + mpi_free( y ); + return rc; +} + + +static void +do_encrypt(MPI a, MPI b, MPI input, ELG_public_key *pkey ) +{ + MPI k; + + /* Note: maybe we should change the interface, so that it + * is possible to check that input is < p and return an + * error code. + */ + + k = gen_k( pkey->p ); + mpi_powm( a, pkey->g, k, pkey->p ); + /* b = (y^k * input) mod p + * = ((y^k mod p) * (input mod p)) mod p + * and because input is < p + * = ((y^k mod p) * input) mod p + */ + mpi_powm( b, pkey->y, k, pkey->p ); + mpi_mulm( b, b, input, pkey->p ); + #if 0 + if( DBG_CIPHER ) { + log_mpidump("elg encrypted y= ", pkey->y); + log_mpidump("elg encrypted p= ", pkey->p); + log_mpidump("elg encrypted k= ", k); + log_mpidump("elg encrypted M= ", input); + log_mpidump("elg encrypted a= ", a); + log_mpidump("elg encrypted b= ", b); + } + #endif + mpi_free(k); +} + + + + +static void +decrypt(MPI output, MPI a, MPI b, ELG_secret_key *skey ) +{ + MPI t1 = mpi_alloc_secure( mpi_get_nlimbs( skey->p ) ); + + /* output = b/(a^x) mod p */ + mpi_powm( t1, a, skey->x, skey->p ); + mpi_invm( t1, t1, skey->p ); + mpi_mulm( output, b, t1, skey->p ); + #if 0 + if( DBG_CIPHER ) { + log_mpidump("elg decrypted x= ", skey->x); + log_mpidump("elg decrypted p= ", skey->p); + log_mpidump("elg decrypted a= ", a); + log_mpidump("elg decrypted b= ", b); + log_mpidump("elg decrypted M= ", output); + } + #endif + mpi_free(t1); +} + + +/**************** + * Make an Elgamal signature out of INPUT + */ + +static void +sign(MPI a, MPI b, MPI input, ELG_secret_key *skey ) +{ + MPI k; + MPI t = mpi_alloc( mpi_get_nlimbs(a) ); + MPI inv = mpi_alloc( mpi_get_nlimbs(a) ); + MPI p_1 = mpi_copy(skey->p); + + /* + * b = (t * inv) mod (p-1) + * b = (t * inv(k,(p-1),(p-1)) mod (p-1) + * b = (((M-x*a) mod (p-1)) * inv(k,(p-1),(p-1))) mod (p-1) + * + */ + mpi_sub_ui(p_1, p_1, 1); + k = gen_k( skey->p ); + mpi_powm( a, skey->g, k, skey->p ); + mpi_mul(t, skey->x, a ); + mpi_subm(t, input, t, p_1 ); + while( mpi_is_neg(t) ) { + BUG(); /* That is nonsense code - left over from a very early test?*/ + mpi_add(t, t, p_1); + } + mpi_invm(inv, k, p_1 ); + mpi_mulm(b, t, inv, p_1 ); + + #if 0 + if( DBG_CIPHER ) { + log_mpidump("elg sign p= ", skey->p); + log_mpidump("elg sign g= ", skey->g); + log_mpidump("elg sign y= ", skey->y); + log_mpidump("elg sign x= ", skey->x); + log_mpidump("elg sign k= ", k); + log_mpidump("elg sign M= ", input); + log_mpidump("elg sign a= ", a); + log_mpidump("elg sign b= ", b); + } + #endif + mpi_free(k); + mpi_free(t); + mpi_free(inv); + mpi_free(p_1); +} + + +/**************** + * Returns true if the signature composed of A and B is valid. + */ +static int +verify(MPI a, MPI b, MPI input, ELG_public_key *pkey ) +{ + int rc; + MPI t1; + MPI t2; + MPI base[4]; + MPI exp[4]; + + if( !(mpi_cmp_ui( a, 0 ) > 0 && mpi_cmp( a, pkey->p ) < 0) ) + return 0; /* assertion 0 < a < p failed */ + + t1 = mpi_alloc( mpi_get_nlimbs(a) ); + t2 = mpi_alloc( mpi_get_nlimbs(a) ); + + #if 0 + /* t1 = (y^a mod p) * (a^b mod p) mod p */ + mpi_powm( t1, pkey->y, a, pkey->p ); + mpi_powm( t2, a, b, pkey->p ); + mpi_mulm( t1, t1, t2, pkey->p ); + + /* t2 = g ^ input mod p */ + mpi_powm( t2, pkey->g, input, pkey->p ); + + rc = !mpi_cmp( t1, t2 ); + #elif 0 + /* t1 = (y^a mod p) * (a^b mod p) mod p */ + base[0] = pkey->y; exp[0] = a; + base[1] = a; exp[1] = b; + base[2] = NULL; exp[2] = NULL; + mpi_mulpowm( t1, base, exp, pkey->p ); + + /* t2 = g ^ input mod p */ + mpi_powm( t2, pkey->g, input, pkey->p ); + + rc = !mpi_cmp( t1, t2 ); + #else + /* t1 = g ^ - input * y ^ a * a ^ b mod p */ + mpi_invm(t2, pkey->g, pkey->p ); + base[0] = t2 ; exp[0] = input; + base[1] = pkey->y; exp[1] = a; + base[2] = a; exp[2] = b; + base[3] = NULL; exp[3] = NULL; + mpi_mulpowm( t1, base, exp, pkey->p ); + rc = !mpi_cmp_ui( t1, 1 ); + + #endif + + mpi_free(t1); + mpi_free(t2); + return rc; +} + +/********************************************* + ************** interface ****************** + *********************************************/ + +int +elg_generate( int algo, unsigned nbits, MPI *skey, MPI **retfactors ) +{ + ELG_secret_key sk; + + if( !is_ELGAMAL(algo) ) + return G10ERR_PUBKEY_ALGO; + + generate( &sk, nbits, retfactors ); + skey[0] = sk.p; + skey[1] = sk.g; + skey[2] = sk.y; + skey[3] = sk.x; + return 0; +} + + +int +elg_check_secret_key( int algo, MPI *skey ) +{ + ELG_secret_key sk; + + if( !is_ELGAMAL(algo) ) + return G10ERR_PUBKEY_ALGO; + if( !skey[0] || !skey[1] || !skey[2] || !skey[3] ) + return G10ERR_BAD_MPI; + + sk.p = skey[0]; + sk.g = skey[1]; + sk.y = skey[2]; + sk.x = skey[3]; + if( !check_secret_key( &sk ) ) + return G10ERR_BAD_SECKEY; + + return 0; +} + + + +int +elg_encrypt( int algo, MPI *resarr, MPI data, MPI *pkey ) +{ + ELG_public_key pk; + + if( !is_ELGAMAL(algo) ) + return G10ERR_PUBKEY_ALGO; + if( !data || !pkey[0] || !pkey[1] || !pkey[2] ) + return G10ERR_BAD_MPI; + + pk.p = pkey[0]; + pk.g = pkey[1]; + pk.y = pkey[2]; + resarr[0] = mpi_alloc( mpi_get_nlimbs( pk.p ) ); + resarr[1] = mpi_alloc( mpi_get_nlimbs( pk.p ) ); + do_encrypt( resarr[0], resarr[1], data, &pk ); + return 0; +} + +int +elg_decrypt( int algo, MPI *result, MPI *data, MPI *skey ) +{ + ELG_secret_key sk; + + if( !is_ELGAMAL(algo) ) + return G10ERR_PUBKEY_ALGO; + if( !data[0] || !data[1] + || !skey[0] || !skey[1] || !skey[2] || !skey[3] ) + return G10ERR_BAD_MPI; + + sk.p = skey[0]; + sk.g = skey[1]; + sk.y = skey[2]; + sk.x = skey[3]; + *result = mpi_alloc_secure( mpi_get_nlimbs( sk.p ) ); + decrypt( *result, data[0], data[1], &sk ); + return 0; +} + +int +elg_sign( int algo, MPI *resarr, MPI data, MPI *skey ) +{ + ELG_secret_key sk; + + if( !is_ELGAMAL(algo) ) + return G10ERR_PUBKEY_ALGO; + if( !data || !skey[0] || !skey[1] || !skey[2] || !skey[3] ) + return G10ERR_BAD_MPI; + + sk.p = skey[0]; + sk.g = skey[1]; + sk.y = skey[2]; + sk.x = skey[3]; + resarr[0] = mpi_alloc( mpi_get_nlimbs( sk.p ) ); + resarr[1] = mpi_alloc( mpi_get_nlimbs( sk.p ) ); + sign( resarr[0], resarr[1], data, &sk ); + return 0; +} + +int +elg_verify( int algo, MPI hash, MPI *data, MPI *pkey, + int (*cmp)(void *, MPI), void *opaquev ) +{ + ELG_public_key pk; + + if( !is_ELGAMAL(algo) ) + return G10ERR_PUBKEY_ALGO; + if( !data[0] || !data[1] || !hash + || !pkey[0] || !pkey[1] || !pkey[2] ) + return G10ERR_BAD_MPI; + + pk.p = pkey[0]; + pk.g = pkey[1]; + pk.y = pkey[2]; + if( !verify( data[0], data[1], hash, &pk ) ) + return G10ERR_BAD_SIGN; + return 0; +} + + + +unsigned int +elg_get_nbits( int algo, MPI *pkey ) +{ + if( !is_ELGAMAL(algo) ) + return 0; + return mpi_get_nbits( pkey[0] ); +} + + +/**************** + * Return some information about the algorithm. We need algo here to + * distinguish different flavors of the algorithm. + * Returns: A pointer to string describing the algorithm or NULL if + * the ALGO is invalid. + * Usage: Bit 0 set : allows signing + * 1 set : allows encryption + * NOTE: This function allows signing also for ELG-E, which is not + * okay but a bad hack to allow to work with old gpg keys. The real check + * is done in the gnupg ocde depending on the packet version. + */ +const char * +elg_get_info( int algo, int *npkey, int *nskey, int *nenc, int *nsig, + int *use ) +{ + *npkey = 3; + *nskey = 4; + *nenc = 2; + *nsig = 2; + + switch( algo ) { + case PUBKEY_ALGO_ELGAMAL: + *use = PUBKEY_USAGE_SIG|PUBKEY_USAGE_ENC; + return "ELG"; + case PUBKEY_ALGO_ELGAMAL_E: + *use = PUBKEY_USAGE_SIG|PUBKEY_USAGE_ENC; + return "ELG-E"; + default: *use = 0; return NULL; + } +} + + diff --git a/cipher/elgamal.h b/cipher/elgamal.h new file mode 100644 index 000000000..f104c2a52 --- /dev/null +++ b/cipher/elgamal.h @@ -0,0 +1,35 @@ +/* elgamal.h + * Copyright (C) 1998 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ +#ifndef G10_ELGAMAL_H +#define G10_ELGAMAL_H + +int elg_generate( int algo, unsigned nbits, MPI *skey, MPI **retfactors ); +int elg_check_secret_key( int algo, MPI *skey ); +int elg_encrypt( int algo, MPI *resarr, MPI data, MPI *pkey ); +int elg_decrypt( int algo, MPI *result, MPI *data, MPI *skey ); +int elg_sign( int algo, MPI *resarr, MPI data, MPI *skey ); +int elg_verify( int algo, MPI hash, MPI *data, MPI *pkey, + int (*cmp)(void *, MPI), void *opaquev ); +unsigned elg_get_nbits( int algo, MPI *pkey ); +const char *elg_get_info( int algo, int *npkey, int *nskey, + int *nenc, int *nsig, int *use ); + + +#endif /*G10_ELGAMAL_H*/ diff --git a/cipher/g10c.c b/cipher/g10c.c new file mode 100644 index 000000000..7b0f4fa61 --- /dev/null +++ b/cipher/g10c.c @@ -0,0 +1,46 @@ +/* g10c.c - Wrapper for cipher functions + * Copyright (C) 1998, 1999 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + +#include <config.h> +#include <stdio.h> +#include <stdlib.h> +#include "mpi.h" +#include "random.h" +#include "cipher.h" + + +/* FIXME: The modules should use functions from libgcrypt */ + + +const char *g10c_revision_string(int dummy) { return "$Revision$"; } + +MPI +g10c_generate_secret_prime( unsigned nbits ) +{ + return generate_secret_prime( nbits ); +} + + +char * +g10c_get_random_bits( unsigned nbits, int level, int secure ) +{ + return (char*)get_random_bits( nbits, level, secure ); +} + diff --git a/cipher/gost.c b/cipher/gost.c new file mode 100644 index 000000000..4a527722f --- /dev/null +++ b/cipher/gost.c @@ -0,0 +1,76 @@ +/* gost.c - GOST encryption + * Copyright (C) 1998 Free Software Foundation, Inc. + * + * The description of GOST (and the used S-boxes) are taken from: + * Bruce Schneier: Applied Cryptography. John Wiley & Sons, 1996. + * ISBN 0-471-11709-9. . + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + +#include <config.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include "util.h" +#include "types.h" +#include "gost.h" + +#error don't use this + + +void +gost_setkey( GOST_context *c, byte *key ) +{ +} + +void +gost_setiv( GOST_context *c, byte *iv ) +{ +} + + +void +gost_encode( GOST_context *c, byte *outbuf, byte *inbuf, unsigned nblocks ) +{ +} + + +void +gost_decode( GOST_context *c, byte *outbuf, byte *inbuf, unsigned nblocks ) +{ +} + + +static void +cfbshift( byte *iv, byte *buf, unsigned count) +{ +} + + + +void +gost_encode_cfb( GOST_context *c, byte *outbuf, byte *inbuf, unsigned nbytes) +{ +} + + +void +gost_decode_cfb( GOST_context *c, byte *outbuf, byte *inbuf, unsigned nbytes) +{ +} + diff --git a/cipher/gost.h b/cipher/gost.h new file mode 100644 index 000000000..d8e7ebfc5 --- /dev/null +++ b/cipher/gost.h @@ -0,0 +1,46 @@ +/* gost.h + * Copyright (C) 1998 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ +#ifndef G10_GOST_H +#define G10_GOST_H + +#include "types.h" + +#define GOST_KEYSIZE 16 +#define GOST_BLOCKSIZE 8 +#define GOST_ROUNDS 8 +#define GOST_KEYLEN (6*GOST_ROUNDS+4) + +typedef struct { + u16 ek[GOST_KEYLEN]; + u16 dk[GOST_KEYLEN]; + byte iv[GOST_BLOCKSIZE]; +} GOST_context; + +void gost_setkey( GOST_context *c, byte *key ); +void gost_setiv( GOST_context *c, byte *iv ); +void gost_encode( GOST_context *c, byte *out, byte *in, unsigned nblocks ); +void gost_decode( GOST_context *c, byte *out, byte *in, unsigned nblocks ); +void gost_encode_cfb( GOST_context *c, byte *outbuf, + byte *inbuf, unsigned nbytes); +void gost_decode_cfb( GOST_context *c, byte *outbuf, + byte *inbuf, unsigned nbytes); + + +#endif /*G10_GOST_H*/ diff --git a/cipher/md.c b/cipher/md.c new file mode 100644 index 000000000..49728638b --- /dev/null +++ b/cipher/md.c @@ -0,0 +1,524 @@ +/* md.c - message digest dispatcher + * Copyright (C) 1998, 1999 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + +#include <config.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> +#include <assert.h> +#include "util.h" +#include "cipher.h" +#include "errors.h" +#include "dynload.h" +#include "rmd.h" + + +/**************** + * This structure is used for the list of available algorithms + * and for the list of algorithms in MD_HANDLE. + */ +struct md_digest_list_s { + struct md_digest_list_s *next; + const char *name; + int algo; + byte *asnoid; + int asnlen; + int mdlen; + void (*init)( void *c ); + void (*write)( void *c, byte *buf, size_t nbytes ); + void (*final)( void *c ); + byte *(*read)( void *c ); + size_t contextsize; /* allocate this amount of context */ + PROPERLY_ALIGNED_TYPE context; +}; + +static struct md_digest_list_s *digest_list; + + +static struct md_digest_list_s * +new_list_item( int algo, + const char *(*get_info)( int, size_t*,byte**, int*, int*, + void (**)(void*), + void (**)(void*,byte*,size_t), + void (**)(void*),byte *(**)(void*)) ) +{ + struct md_digest_list_s *r; + + r = m_alloc_clear( sizeof *r ); + r->algo = algo, + r->name = (*get_info)( algo, &r->contextsize, + &r->asnoid, &r->asnlen, &r->mdlen, + &r->init, &r->write, &r->final, &r->read ); + if( !r->name ) { + m_free(r); + r = NULL; + } + return r; +} + + + +/**************** + * Try to load the modules with the requeste algorithm + * and return true if new modules are available + * If req_alog is -1 try to load all digest algorithms. + */ +static int +load_digest_module( int req_algo ) +{ + static int initialized = 0; + static u32 checked_algos[256/32]; + static int checked_all = 0; + struct md_digest_list_s *r; + void *context = NULL; + int algo; + int any = 0; + const char *(*get_info)( int, size_t*,byte**, int*, int*, + void (**)(void*), + void (**)(void*,byte*,size_t), + void (**)(void*),byte *(**)(void*)); + + if( !initialized ) { + cipher_modules_constructor(); + initialized = 1; + } + algo = req_algo; + if( algo > 255 || !algo ) + return 0; /* algorithm number too high (does not fit into out bitmap)*/ + if( checked_all ) + return 0; /* already called with -1 */ + if( algo < 0 ) + checked_all = 1; + else if( (checked_algos[algo/32] & (1 << (algo%32))) ) + return 0; /* already checked and not found */ + else + checked_algos[algo/32] |= (1 << (algo%32)); + + while( enum_gnupgext_digests( &context, &algo, &get_info ) ) { + if( req_algo != -1 && algo != req_algo ) + continue; + for(r=digest_list; r; r = r->next ) + if( r->algo == algo ) + break; + if( r ) { + log_info("skipping digest %d: already loaded\n", algo ); + continue; + } + r = new_list_item( algo, get_info ); + if( ! r ) { + log_info("skipping digest %d: no name\n", algo ); + continue; + } + /* put it into the list */ + if( g10_opt_verbose > 1 ) + log_info("loaded digest %d\n", algo); + r->next = digest_list; + digest_list = r; + any = 1; + if( req_algo != -1 ) + break; + } + enum_gnupgext_digests( &context, NULL, NULL ); + return any; +} + + + +/**************** + * Map a string to the digest algo + */ +int +string_to_digest_algo( const char *string ) +{ + struct md_digest_list_s *r; + + do { + for(r = digest_list; r; r = r->next ) + if( !ascii_strcasecmp( r->name, string ) ) + return r->algo; + } while( !r && load_digest_module(-1) ); + return 0; +} + + +/**************** + * Map a digest algo to a string + */ +const char * +digest_algo_to_string( int algo ) +{ + struct md_digest_list_s *r; + + do { + for(r = digest_list; r; r = r->next ) + if( r->algo == algo ) + return r->name; + } while( !r && load_digest_module( algo ) ); + return NULL; +} + + +int +check_digest_algo( int algo ) +{ + struct md_digest_list_s *r; + + do { + for(r = digest_list; r; r = r->next ) + if( r->algo == algo ) + return 0; + } while( !r && load_digest_module(algo) ); + return G10ERR_DIGEST_ALGO; +} + + + +/**************** + * Open a message digest handle for use with algorithm ALGO. + * More algorithms may be added by md_enable(). The initial algorithm + * may be 0. + */ +MD_HANDLE +md_open( int algo, int secure ) +{ + MD_HANDLE hd; + int bufsize; + + if( secure ) { + bufsize = 512 - sizeof( *hd ); + hd = m_alloc_secure_clear( sizeof *hd + bufsize ); + } + else { + bufsize = 1024 - sizeof( *hd ); + hd = m_alloc_clear( sizeof *hd + bufsize ); + } + + hd->bufsize = bufsize+1; /* hd has already one byte allocated */ + hd->secure = secure; + if( algo ) + md_enable( hd, algo ); + fast_random_poll(); + return hd; +} + +void +md_enable( MD_HANDLE h, int algo ) +{ + struct md_digest_list_s *r, *ac; + + for( ac=h->list; ac; ac = ac->next ) + if( ac->algo == algo ) + return ; /* already enabled */ + /* find the algorithm */ + do { + for(r = digest_list; r; r = r->next ) + if( r->algo == algo ) + break; + } while( !r && load_digest_module( algo ) ); + if( !r ) { + log_error("md_enable: algorithm %d not available\n", algo ); + return; + } + /* and allocate a new list entry */ + ac = h->secure? m_alloc_secure( sizeof *ac + r->contextsize + - sizeof(r->context) ) + : m_alloc( sizeof *ac + r->contextsize + - sizeof(r->context) ); + *ac = *r; + ac->next = h->list; + h->list = ac; + /* and init this instance */ + (*ac->init)( &ac->context.c ); +} + + +MD_HANDLE +md_copy( MD_HANDLE a ) +{ + MD_HANDLE b; + struct md_digest_list_s *ar, *br; + + if( a->bufcount ) + md_write( a, NULL, 0 ); + b = a->secure ? m_alloc_secure( sizeof *b + a->bufsize - 1 ) + : m_alloc( sizeof *b + a->bufsize - 1 ); + memcpy( b, a, sizeof *a + a->bufsize - 1 ); + b->list = NULL; + b->debug = NULL; + /* and now copy the complete list of algorithms */ + /* I know that the copied list is reversed, but that doesn't matter */ + for( ar=a->list; ar; ar = ar->next ) { + br = a->secure ? m_alloc_secure( sizeof *br + ar->contextsize + - sizeof(ar->context) ) + : m_alloc( sizeof *br + ar->contextsize + - sizeof(ar->context) ); + memcpy( br, ar, sizeof(*br) + ar->contextsize + - sizeof(ar->context) ); + br->next = b->list; + b->list = br; + } + + if( a->debug ) + md_start_debug( b, "unknown" ); + return b; +} + + +/**************** + * Reset all contexts and discard any buffered stuff. This may be used + * instead of a md_close(); md_open(). + */ +void +md_reset( MD_HANDLE a ) +{ + struct md_digest_list_s *r; + + a->bufcount = a->finalized = 0; + for( r=a->list; r; r = r->next ) { + memset( r->context.c, 0, r->contextsize ); + (*r->init)( &r->context.c ); + } +} + + +void +md_close(MD_HANDLE a) +{ + struct md_digest_list_s *r, *r2; + + if( !a ) + return; + if( a->debug ) + md_stop_debug(a); + for(r=a->list; r; r = r2 ) { + r2 = r->next; + m_free(r); + } + m_free(a); +} + + +void +md_write( MD_HANDLE a, const byte *inbuf, size_t inlen) +{ + struct md_digest_list_s *r; + + if( a->debug ) { + if( a->bufcount && fwrite(a->buffer, a->bufcount, 1, a->debug ) != 1 ) + BUG(); + if( inlen && fwrite(inbuf, inlen, 1, a->debug ) != 1 ) + BUG(); + } + for(r=a->list; r; r = r->next ) { + (*r->write)( &r->context.c, a->buffer, a->bufcount ); + /* Fixme: all ->write fnc should take a const byte* */ + (*r->write)( &r->context.c, (byte*)inbuf, inlen ); + } + a->bufcount = 0; +} + + + +void +md_final(MD_HANDLE a) +{ + struct md_digest_list_s *r; + + if( a->finalized ) + return; + + if( a->bufcount ) + md_write( a, NULL, 0 ); + + for(r=a->list; r; r = r->next ) { + (*r->final)( &r->context.c ); + } + a->finalized = 1; +} + + +/**************** + * if ALGO is null get the digest for the used algo (which should be only one) + */ +byte * +md_read( MD_HANDLE a, int algo ) +{ + struct md_digest_list_s *r; + + if( !algo ) { /* return the first algorithm */ + if( (r=a->list) ) { + if( r->next ) + log_debug("more than algorithm in md_read(0)\n"); + return (*r->read)( &r->context.c ); + } + } + else { + for(r=a->list; r; r = r->next ) + if( r->algo == algo ) + return (*r->read)( &r->context.c ); + } + BUG(); + return NULL; +} + + +/**************** + * This function combines md_final and md_read but keeps the context + * intact. This function can be used to calculate intermediate + * digests. The digest is copied into buffer and the digestlength is + * returned. If buffer is NULL only the needed size for buffer is returned. + * buflen gives the max size of buffer. If the buffer is too shourt to + * hold the complete digest, the buffer is filled with as many bytes are + * possible and this value is returned. + */ +int +md_digest( MD_HANDLE a, int algo, byte *buffer, int buflen ) +{ + struct md_digest_list_s *r = NULL; + char *context; + char *digest; + + if( a->bufcount ) + md_write( a, NULL, 0 ); + + if( !algo ) { /* return digest for the first algorithm */ + if( (r=a->list) && r->next ) + log_debug("more than algorithm in md_digest(0)\n"); + } + else { + for(r=a->list; r; r = r->next ) + if( r->algo == algo ) + break; + } + if( !r ) + BUG(); + + if( !buffer ) + return r->mdlen; + + /* I don't want to change the interface, so I simply work on a copy + * the context (extra overhead - should be fixed)*/ + context = a->secure ? m_alloc_secure( r->contextsize ) + : m_alloc( r->contextsize ); + memcpy( context, r->context.c, r->contextsize ); + (*r->final)( context ); + digest = (*r->read)( context ); + + if( buflen > r->mdlen ) + buflen = r->mdlen; + memcpy( buffer, digest, buflen ); + + m_free(context); + return buflen; +} + + +int +md_get_algo( MD_HANDLE a ) +{ + struct md_digest_list_s *r; + + if( (r=a->list) ) { + if( r->next ) + log_error("WARNING: more than algorithm in md_get_algo()\n"); + return r->algo; + } + return 0; +} + +/**************** + * Return the length of the digest + */ +int +md_digest_length( int algo ) +{ + struct md_digest_list_s *r; + + do { + for(r = digest_list; r; r = r->next ) { + if( r->algo == algo ) + return r->mdlen; + } + } while( !r && load_digest_module( algo ) ); + log_error("WARNING: no length for md algo %d\n", algo); + return 0; +} + + +/* Hmmm: add a mode to enumerate the OIDs + * to make g10/sig-check.c more portable */ +const byte * +md_asn_oid( int algo, size_t *asnlen, size_t *mdlen ) +{ + struct md_digest_list_s *r; + + do { + for(r = digest_list; r; r = r->next ) { + if( r->algo == algo ) { + if( asnlen ) + *asnlen = r->asnlen; + if( mdlen ) + *mdlen = r->mdlen; + return r->asnoid; + } + } + } while( !r && load_digest_module( algo ) ); + log_bug("no asn for md algo %d\n", algo); + return NULL; +} + + +void +md_start_debug( MD_HANDLE md, const char *suffix ) +{ + static int idx=0; + char buf[25]; + + if( md->debug ) { + log_debug("Oops: md debug already started\n"); + return; + } + idx++; + sprintf(buf, "dbgmd-%05d" EXTSEP_S "%.10s", idx, suffix ); + md->debug = fopen(buf, "w"); + if( !md->debug ) + log_debug("md debug: can't open %s\n", buf ); +} + +void +md_stop_debug( MD_HANDLE md ) +{ + if( md->debug ) { + if( md->bufcount ) + md_write( md, NULL, 0 ); + fclose(md->debug); + md->debug = NULL; + } + #ifdef HAVE_U64_TYPEDEF + { /* a kludge to pull in the __muldi3 for Solaris */ + volatile u32 a = (u32)(ulong)md; + volatile u64 b = 42; + volatile u64 c; + c = a * b; + } + #endif +} + diff --git a/cipher/md5.c b/cipher/md5.c new file mode 100644 index 000000000..ef6886eb4 --- /dev/null +++ b/cipher/md5.c @@ -0,0 +1,427 @@ +/* md5.c - MD5 Message-Digest Algorithm + * Copyright (C) 1995, 1996, 1998, 1999, + * 2000, 2001 Free Software Foundation, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * According to the definition of MD5 in RFC 1321 from April 1992. + * NOTE: This is *not* the same file as the one from glibc. + */ +/* Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995. */ +/* Heavily modified for GnuPG by <wk@gnupg.org> */ + +/* Test values: + * "" D4 1D 8C D9 8F 00 B2 04 E9 80 09 98 EC F8 42 7E + * "a" 0C C1 75 B9 C0 F1 B6 A8 31 C3 99 E2 69 77 26 61 + * "abc 90 01 50 98 3C D2 4F B0 D6 96 3F 7D 28 E1 7F 72 + * "message digest" F9 6B 69 7D 7C B7 93 8D 52 5A 2F 31 AA F1 61 D0 + */ + +#include <config.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include "util.h" +#include "memory.h" +#include "dynload.h" + +#include "bithelp.h" + + +typedef struct { + u32 A,B,C,D; /* chaining variables */ + u32 nblocks; + byte buf[64]; + int count; +} MD5_CONTEXT; + + +static void +md5_init( MD5_CONTEXT *ctx ) +{ + ctx->A = 0x67452301; + ctx->B = 0xefcdab89; + ctx->C = 0x98badcfe; + ctx->D = 0x10325476; + + ctx->nblocks = 0; + ctx->count = 0; +} + + + + +/* These are the four functions used in the four steps of the MD5 algorithm + and defined in the RFC 1321. The first function is a little bit optimized + (as found in Colin Plumbs public domain implementation). */ +/* #define FF(b, c, d) ((b & c) | (~b & d)) */ +#define FF(b, c, d) (d ^ (b & (c ^ d))) +#define FG(b, c, d) FF (d, b, c) +#define FH(b, c, d) (b ^ c ^ d) +#define FI(b, c, d) (c ^ (b | ~d)) + +static void +burn_stack (int bytes) +{ + char buf[128]; + + memset (buf, 0, sizeof buf); + bytes -= sizeof buf; + if (bytes > 0) + burn_stack (bytes); +} + + + +/**************** + * transform n*64 bytes + */ +static void +/*transform( MD5_CONTEXT *ctx, const void *buffer, size_t len )*/ +transform( MD5_CONTEXT *ctx, byte *data ) +{ + u32 correct_words[16]; + u32 A = ctx->A; + u32 B = ctx->B; + u32 C = ctx->C; + u32 D = ctx->D; + u32 *cwp = correct_words; + + #ifdef BIG_ENDIAN_HOST + { int i; + byte *p2, *p1; + for(i=0, p1=data, p2=(byte*)correct_words; i < 16; i++, p2 += 4 ) { + p2[3] = *p1++; + p2[2] = *p1++; + p2[1] = *p1++; + p2[0] = *p1++; + } + } + #else + memcpy( correct_words, data, 64 ); + #endif + + +#define OP(a, b, c, d, s, T) \ + do \ + { \ + a += FF (b, c, d) + (*cwp++) + T; \ + a = rol(a, s); \ + a += b; \ + } \ + while (0) + + /* Before we start, one word about the strange constants. + They are defined in RFC 1321 as + + T[i] = (int) (4294967296.0 * fabs (sin (i))), i=1..64 + */ + + /* Round 1. */ + OP (A, B, C, D, 7, 0xd76aa478); + OP (D, A, B, C, 12, 0xe8c7b756); + OP (C, D, A, B, 17, 0x242070db); + OP (B, C, D, A, 22, 0xc1bdceee); + OP (A, B, C, D, 7, 0xf57c0faf); + OP (D, A, B, C, 12, 0x4787c62a); + OP (C, D, A, B, 17, 0xa8304613); + OP (B, C, D, A, 22, 0xfd469501); + OP (A, B, C, D, 7, 0x698098d8); + OP (D, A, B, C, 12, 0x8b44f7af); + OP (C, D, A, B, 17, 0xffff5bb1); + OP (B, C, D, A, 22, 0x895cd7be); + OP (A, B, C, D, 7, 0x6b901122); + OP (D, A, B, C, 12, 0xfd987193); + OP (C, D, A, B, 17, 0xa679438e); + OP (B, C, D, A, 22, 0x49b40821); + +#undef OP +#define OP(f, a, b, c, d, k, s, T) \ + do \ + { \ + a += f (b, c, d) + correct_words[k] + T; \ + a = rol(a, s); \ + a += b; \ + } \ + while (0) + + /* Round 2. */ + OP (FG, A, B, C, D, 1, 5, 0xf61e2562); + OP (FG, D, A, B, C, 6, 9, 0xc040b340); + OP (FG, C, D, A, B, 11, 14, 0x265e5a51); + OP (FG, B, C, D, A, 0, 20, 0xe9b6c7aa); + OP (FG, A, B, C, D, 5, 5, 0xd62f105d); + OP (FG, D, A, B, C, 10, 9, 0x02441453); + OP (FG, C, D, A, B, 15, 14, 0xd8a1e681); + OP (FG, B, C, D, A, 4, 20, 0xe7d3fbc8); + OP (FG, A, B, C, D, 9, 5, 0x21e1cde6); + OP (FG, D, A, B, C, 14, 9, 0xc33707d6); + OP (FG, C, D, A, B, 3, 14, 0xf4d50d87); + OP (FG, B, C, D, A, 8, 20, 0x455a14ed); + OP (FG, A, B, C, D, 13, 5, 0xa9e3e905); + OP (FG, D, A, B, C, 2, 9, 0xfcefa3f8); + OP (FG, C, D, A, B, 7, 14, 0x676f02d9); + OP (FG, B, C, D, A, 12, 20, 0x8d2a4c8a); + + /* Round 3. */ + OP (FH, A, B, C, D, 5, 4, 0xfffa3942); + OP (FH, D, A, B, C, 8, 11, 0x8771f681); + OP (FH, C, D, A, B, 11, 16, 0x6d9d6122); + OP (FH, B, C, D, A, 14, 23, 0xfde5380c); + OP (FH, A, B, C, D, 1, 4, 0xa4beea44); + OP (FH, D, A, B, C, 4, 11, 0x4bdecfa9); + OP (FH, C, D, A, B, 7, 16, 0xf6bb4b60); + OP (FH, B, C, D, A, 10, 23, 0xbebfbc70); + OP (FH, A, B, C, D, 13, 4, 0x289b7ec6); + OP (FH, D, A, B, C, 0, 11, 0xeaa127fa); + OP (FH, C, D, A, B, 3, 16, 0xd4ef3085); + OP (FH, B, C, D, A, 6, 23, 0x04881d05); + OP (FH, A, B, C, D, 9, 4, 0xd9d4d039); + OP (FH, D, A, B, C, 12, 11, 0xe6db99e5); + OP (FH, C, D, A, B, 15, 16, 0x1fa27cf8); + OP (FH, B, C, D, A, 2, 23, 0xc4ac5665); + + /* Round 4. */ + OP (FI, A, B, C, D, 0, 6, 0xf4292244); + OP (FI, D, A, B, C, 7, 10, 0x432aff97); + OP (FI, C, D, A, B, 14, 15, 0xab9423a7); + OP (FI, B, C, D, A, 5, 21, 0xfc93a039); + OP (FI, A, B, C, D, 12, 6, 0x655b59c3); + OP (FI, D, A, B, C, 3, 10, 0x8f0ccc92); + OP (FI, C, D, A, B, 10, 15, 0xffeff47d); + OP (FI, B, C, D, A, 1, 21, 0x85845dd1); + OP (FI, A, B, C, D, 8, 6, 0x6fa87e4f); + OP (FI, D, A, B, C, 15, 10, 0xfe2ce6e0); + OP (FI, C, D, A, B, 6, 15, 0xa3014314); + OP (FI, B, C, D, A, 13, 21, 0x4e0811a1); + OP (FI, A, B, C, D, 4, 6, 0xf7537e82); + OP (FI, D, A, B, C, 11, 10, 0xbd3af235); + OP (FI, C, D, A, B, 2, 15, 0x2ad7d2bb); + OP (FI, B, C, D, A, 9, 21, 0xeb86d391); + + /* Put checksum in context given as argument. */ + ctx->A += A; + ctx->B += B; + ctx->C += C; + ctx->D += D; +} + + + +/* The routine updates the message-digest context to + * account for the presence of each of the characters inBuf[0..inLen-1] + * in the message whose digest is being computed. + */ +static void +md5_write( MD5_CONTEXT *hd, byte *inbuf, size_t inlen) +{ + if( hd->count == 64 ) { /* flush the buffer */ + transform( hd, hd->buf ); + burn_stack (80+6*sizeof(void*)); + hd->count = 0; + hd->nblocks++; + } + if( !inbuf ) + return; + if( hd->count ) { + for( ; inlen && hd->count < 64; inlen-- ) + hd->buf[hd->count++] = *inbuf++; + md5_write( hd, NULL, 0 ); + if( !inlen ) + return; + } + + while( inlen >= 64 ) { + transform( hd, inbuf ); + hd->count = 0; + hd->nblocks++; + inlen -= 64; + inbuf += 64; + } + burn_stack (80+6*sizeof(void*)); + for( ; inlen && hd->count < 64; inlen-- ) + hd->buf[hd->count++] = *inbuf++; +} + + + +/* The routine final terminates the message-digest computation and + * ends with the desired message digest in mdContext->digest[0...15]. + * The handle is prepared for a new MD5 cycle. + * Returns 16 bytes representing the digest. + */ + +static void +md5_final( MD5_CONTEXT *hd ) +{ + u32 t, msb, lsb; + byte *p; + + md5_write(hd, NULL, 0); /* flush */; + + t = hd->nblocks; + /* multiply by 64 to make a byte count */ + lsb = t << 6; + msb = t >> 26; + /* add the count */ + t = lsb; + if( (lsb += hd->count) < t ) + msb++; + /* multiply by 8 to make a bit count */ + t = lsb; + lsb <<= 3; + msb <<= 3; + msb |= t >> 29; + + if( hd->count < 56 ) { /* enough room */ + hd->buf[hd->count++] = 0x80; /* pad */ + while( hd->count < 56 ) + hd->buf[hd->count++] = 0; /* pad */ + } + else { /* need one extra block */ + hd->buf[hd->count++] = 0x80; /* pad character */ + while( hd->count < 64 ) + hd->buf[hd->count++] = 0; + md5_write(hd, NULL, 0); /* flush */; + memset(hd->buf, 0, 56 ); /* fill next block with zeroes */ + } + /* append the 64 bit count */ + hd->buf[56] = lsb ; + hd->buf[57] = lsb >> 8; + hd->buf[58] = lsb >> 16; + hd->buf[59] = lsb >> 24; + hd->buf[60] = msb ; + hd->buf[61] = msb >> 8; + hd->buf[62] = msb >> 16; + hd->buf[63] = msb >> 24; + transform( hd, hd->buf ); + burn_stack (80+6*sizeof(void*)); + + p = hd->buf; + #ifdef BIG_ENDIAN_HOST + #define X(a) do { *p++ = hd-> a ; *p++ = hd-> a >> 8; \ + *p++ = hd-> a >> 16; *p++ = hd-> a >> 24; } while(0) + #else /* little endian */ + #define X(a) do { *(u32*)p = hd-> a ; p += 4; } while(0) + #endif + X(A); + X(B); + X(C); + X(D); + #undef X + +} + +static byte * +md5_read( MD5_CONTEXT *hd ) +{ + return hd->buf; +} + +/**************** + * Return some information about the algorithm. We need algo here to + * distinguish different flavors of the algorithm. + * Returns: A pointer to string describing the algorithm or NULL if + * the ALGO is invalid. + */ +static const char * +md5_get_info( int algo, size_t *contextsize, + byte **r_asnoid, int *r_asnlen, int *r_mdlen, + void (**r_init)( void *c ), + void (**r_write)( void *c, byte *buf, size_t nbytes ), + void (**r_final)( void *c ), + byte *(**r_read)( void *c ) + ) +{ + static byte asn[18] = /* Object ID is 1.2.840.113549.2.5 */ + { 0x30, 0x20, 0x30, 0x0c, 0x06, 0x08, 0x2a, 0x86,0x48, + 0x86, 0xf7, 0x0d, 0x02, 0x05, 0x05, 0x00, 0x04, 0x10 }; + + if( algo != 1 ) + return NULL; + + *contextsize = sizeof(MD5_CONTEXT); + *r_asnoid = asn; + *r_asnlen = DIM(asn); + *r_mdlen = 16; + *(void (**)(MD5_CONTEXT *))r_init = md5_init; + *(void (**)(MD5_CONTEXT *, byte*, size_t))r_write = md5_write; + *(void (**)(MD5_CONTEXT *))r_final = md5_final; + *(byte *(**)(MD5_CONTEXT *))r_read = md5_read; + + return "MD5"; +} + + +#ifndef IS_MODULE +static +#endif +const char * const gnupgext_version = "MD5 ($Revision$)"; + +static struct { + int class; + int version; + int value; + void (*func)(void); +} func_table[] = { + { 10, 1, 0, (void(*)(void))md5_get_info }, + { 11, 1, 1 }, +}; + + +#ifndef IS_MODULE +static +#endif +void * +gnupgext_enum_func( int what, int *sequence, int *class, int *vers ) +{ + void *ret; + int i = *sequence; + + do { + if( i >= DIM(func_table) || i < 0 ) + return NULL; + *class = func_table[i].class; + *vers = func_table[i].version; + switch( *class ) { + case 11: case 21: case 31: ret = &func_table[i].value; break; +#ifndef __riscos__ + default: ret = func_table[i].func; break; +#else /* __riscos__ */ + default: ret = (void *) func_table[i].func; break; +#endif /* __riscos__ */ + } + i++; + } while( what && what != *class ); + + *sequence = i; + return ret; +} + + + + +#ifndef IS_MODULE +void +md5_constructor(void) +{ + register_internal_cipher_extension( gnupgext_version, gnupgext_enum_func ); +} +#endif + + + +/* end of file */ diff --git a/cipher/primegen.c b/cipher/primegen.c new file mode 100644 index 000000000..bb7138a84 --- /dev/null +++ b/cipher/primegen.c @@ -0,0 +1,583 @@ +/* primegen.c - prime number generator + * Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + * + * *********************************************************************** + * The algorithm used to generate practically save primes is due to + * Lim and Lee as described in the CRYPTO '97 proceedings (ISBN3540633847) + * page 260. + */ + +#include <config.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include "util.h" +#include "mpi.h" +#include "cipher.h" + +static int no_of_small_prime_numbers; +static MPI gen_prime( unsigned nbits, int mode, int randomlevel ); +static int check_prime( MPI prime, MPI val_2 ); +static int is_prime( MPI n, int steps, int *count ); +static void m_out_of_n( char *array, int m, int n ); + +static void (*progress_cb) ( void *, int ); +static void *progress_cb_data; + +void +register_primegen_progress ( void (*cb)( void *, int), void *cb_data ) +{ + progress_cb = cb; + progress_cb_data = cb_data; +} + + +static void +progress( int c ) +{ + if ( progress_cb ) + progress_cb ( progress_cb_data, c ); + else + fputc( c, stderr ); +} + + +/**************** + * Generate a prime number (stored in secure memory) + */ +MPI +generate_secret_prime( unsigned nbits ) +{ + MPI prime; + + prime = gen_prime( nbits, 1, 2 ); + progress('\n'); + return prime; +} + +MPI +generate_public_prime( unsigned nbits ) +{ + MPI prime; + + prime = gen_prime( nbits, 0, 2 ); + progress('\n'); + return prime; +} + + +/**************** + * We do not need to use the strongest RNG because we gain no extra + * security from it - The prime number is public and we could also + * offer the factors for those who are willing to check that it is + * indeed a strong prime. + * + * mode 0: Standard + * 1: Make sure that at least one factor is of size qbits. + */ +MPI +generate_elg_prime( int mode, unsigned pbits, unsigned qbits, + MPI g, MPI **ret_factors ) +{ + int n; /* number of factors */ + int m; /* number of primes in pool */ + unsigned fbits; /* length of prime factors */ + MPI *factors; /* current factors */ + MPI *pool; /* pool of primes */ + MPI q; /* first prime factor (variable)*/ + MPI prime; /* prime test value */ + MPI q_factor; /* used for mode 1 */ + byte *perms = NULL; + int i, j; + int count1, count2; + unsigned nprime; + unsigned req_qbits = qbits; /* the requested q bits size */ + MPI val_2 = mpi_alloc_set_ui( 2 ); + + /* find number of needed prime factors */ + for(n=1; (pbits - qbits - 1) / n >= qbits; n++ ) + ; + n--; + if( !n || (mode==1 && n < 2) ) + log_fatal("can't gen prime with pbits=%u qbits=%u\n", pbits, qbits ); + if( mode == 1 ) { + n--; + fbits = (pbits - 2*req_qbits -1) / n; + qbits = pbits - req_qbits - n*fbits; + } + else { + fbits = (pbits - req_qbits -1) / n; + qbits = pbits - n*fbits; + } + if( DBG_CIPHER ) + log_debug("gen prime: pbits=%u qbits=%u fbits=%u/%u n=%d\n", + pbits, req_qbits, qbits, fbits, n ); + prime = mpi_alloc( (pbits + BITS_PER_MPI_LIMB - 1) / BITS_PER_MPI_LIMB ); + q = gen_prime( qbits, 0, 0 ); + q_factor = mode==1? gen_prime( req_qbits, 0, 0 ) : NULL; + + /* allocate an array to hold the factors + 2 for later usage */ + factors = m_alloc_clear( (n+2) * sizeof *factors ); + + /* make a pool of 3n+5 primes (this is an arbitrary value) */ + m = n*3+5; + if( mode == 1 ) + m += 5; /* need some more for DSA */ + if( m < 25 ) + m = 25; + pool = m_alloc_clear( m * sizeof *pool ); + + /* permutate over the pool of primes */ + count1=count2=0; + do { + next_try: + if( !perms ) { + /* allocate new primes */ + for(i=0; i < m; i++ ) { + mpi_free(pool[i]); + pool[i] = NULL; + } + /* init m_out_of_n() */ + perms = m_alloc_clear( m ); + for(i=0; i < n; i++ ) { + perms[i] = 1; + pool[i] = gen_prime( fbits, 0, 0 ); + factors[i] = pool[i]; + } + } + else { + m_out_of_n( perms, n, m ); + for(i=j=0; i < m && j < n ; i++ ) + if( perms[i] ) { + if( !pool[i] ) + pool[i] = gen_prime( fbits, 0, 0 ); + factors[j++] = pool[i]; + } + if( i == n ) { + m_free(perms); perms = NULL; + progress('!'); + goto next_try; /* allocate new primes */ + } + } + + mpi_set( prime, q ); + mpi_mul_ui( prime, prime, 2 ); + if( mode == 1 ) + mpi_mul( prime, prime, q_factor ); + for(i=0; i < n; i++ ) + mpi_mul( prime, prime, factors[i] ); + mpi_add_ui( prime, prime, 1 ); + nprime = mpi_get_nbits(prime); + if( nprime < pbits ) { + if( ++count1 > 20 ) { + count1 = 0; + qbits++; + progress('>'); + mpi_free (q); + q = gen_prime( qbits, 0, 0 ); + goto next_try; + } + } + else + count1 = 0; + if( nprime > pbits ) { + if( ++count2 > 20 ) { + count2 = 0; + qbits--; + progress('<'); + mpi_free (q); + q = gen_prime( qbits, 0, 0 ); + goto next_try; + } + } + else + count2 = 0; + } while( !(nprime == pbits && check_prime( prime, val_2 )) ); + + if( DBG_CIPHER ) { + progress('\n'); + log_mpidump( "prime : ", prime ); + log_mpidump( "factor q: ", q ); + if( mode == 1 ) + log_mpidump( "factor q0: ", q_factor ); + for(i=0; i < n; i++ ) + log_mpidump( "factor pi: ", factors[i] ); + log_debug("bit sizes: prime=%u, q=%u", mpi_get_nbits(prime), mpi_get_nbits(q) ); + if( mode == 1 ) + fprintf(stderr, ", q0=%u", mpi_get_nbits(q_factor) ); + for(i=0; i < n; i++ ) + fprintf(stderr, ", p%d=%u", i, mpi_get_nbits(factors[i]) ); + progress('\n'); + } + + if( ret_factors ) { /* caller wants the factors */ + *ret_factors = m_alloc_clear( (n+2) * sizeof **ret_factors); + i = 0; + if( mode == 1 ) { + (*ret_factors)[i++] = mpi_copy( q_factor ); + for(; i <= n; i++ ) + (*ret_factors)[i] = mpi_copy( factors[i] ); + } + else { + for(; i < n; i++ ) + (*ret_factors)[i] = mpi_copy( factors[i] ); + } + } + + if( g ) { /* create a generator (start with 3)*/ + MPI tmp = mpi_alloc( mpi_get_nlimbs(prime) ); + MPI b = mpi_alloc( mpi_get_nlimbs(prime) ); + MPI pmin1 = mpi_alloc( mpi_get_nlimbs(prime) ); + + if( mode == 1 ) + BUG(); /* not yet implemented */ + factors[n] = q; + factors[n+1] = mpi_alloc_set_ui(2); + mpi_sub_ui( pmin1, prime, 1 ); + mpi_set_ui(g,2); + do { + mpi_add_ui(g, g, 1); + if( DBG_CIPHER ) { + log_debug("checking g: "); + mpi_print( stderr, g, 1 ); + } + else + progress('^'); + for(i=0; i < n+2; i++ ) { + /*fputc('~', stderr);*/ + mpi_fdiv_q(tmp, pmin1, factors[i] ); + /* (no mpi_pow(), but it is okay to use this with mod prime) */ + mpi_powm(b, g, tmp, prime ); + if( !mpi_cmp_ui(b, 1) ) + break; + } + if( DBG_CIPHER ) + progress('\n'); + } while( i < n+2 ); + mpi_free(factors[n+1]); + mpi_free(tmp); + mpi_free(b); + mpi_free(pmin1); + } + if( !DBG_CIPHER ) + progress('\n'); + + m_free( factors ); /* (factors are shallow copies) */ + for(i=0; i < m; i++ ) + mpi_free( pool[i] ); + m_free( pool ); + m_free(perms); + mpi_free(val_2); + mpi_free(q); + return prime; +} + + + +static MPI +gen_prime( unsigned nbits, int secret, int randomlevel ) +{ + unsigned nlimbs; + MPI prime, ptest, pminus1, val_2, val_3, result; + int i; + unsigned x, step; + int count1, count2; + int *mods; + + if( 0 && DBG_CIPHER ) + log_debug("generate a prime of %u bits ", nbits ); + + if( !no_of_small_prime_numbers ) { + for(i=0; small_prime_numbers[i]; i++ ) + no_of_small_prime_numbers++; + } + mods = m_alloc( no_of_small_prime_numbers * sizeof *mods ); + /* make nbits fit into MPI implementation */ + nlimbs = (nbits + BITS_PER_MPI_LIMB - 1) / BITS_PER_MPI_LIMB; + val_2 = mpi_alloc_set_ui( 2 ); + val_3 = mpi_alloc_set_ui( 3); + prime = secret? mpi_alloc_secure( nlimbs ): mpi_alloc( nlimbs ); + result = mpi_alloc_like( prime ); + pminus1= mpi_alloc_like( prime ); + ptest = mpi_alloc_like( prime ); + count1 = count2 = 0; + for(;;) { /* try forvever */ + int dotcount=0; + + /* generate a random number */ + { char *p = get_random_bits( nbits, randomlevel, secret ); + mpi_set_buffer( prime, p, (nbits+7)/8, 0 ); + m_free(p); + } + + /* Set high order bit to 1, set low order bit to 0. + If we are generating a secret prime we are most probably + doing that for RSA, to make sure that the modulus does have + the requested keysize we set the 2 high order bits */ + mpi_set_highbit( prime, nbits-1 ); + if (secret) + mpi_set_bit (prime, nbits-2); + mpi_set_bit( prime, 0 ); + + /* calculate all remainders */ + for(i=0; (x = small_prime_numbers[i]); i++ ) + mods[i] = mpi_fdiv_r_ui(NULL, prime, x); + + /* now try some primes starting with prime */ + for(step=0; step < 20000; step += 2 ) { + /* check against all the small primes we have in mods */ + count1++; + for(i=0; (x = small_prime_numbers[i]); i++ ) { + while( mods[i] + step >= x ) + mods[i] -= x; + if( !(mods[i] + step) ) + break; + } + if( x ) + continue; /* found a multiple of an already known prime */ + + mpi_add_ui( ptest, prime, step ); + + /* do a faster Fermat test */ + count2++; + mpi_sub_ui( pminus1, ptest, 1); + mpi_powm( result, val_2, pminus1, ptest ); + if( !mpi_cmp_ui( result, 1 ) ) { /* not composite */ + /* perform stronger tests */ + if( is_prime(ptest, 5, &count2 ) ) { + if( !mpi_test_bit( ptest, nbits-1 ) ) { + progress('\n'); + log_debug("overflow in prime generation\n"); + break; /* step loop, continue with a new prime */ + } + + mpi_free(val_2); + mpi_free(val_3); + mpi_free(result); + mpi_free(pminus1); + mpi_free(prime); + m_free(mods); + return ptest; + } + } + if( ++dotcount == 10 ) { + progress('.'); + dotcount = 0; + } + } + progress(':'); /* restart with a new random value */ + } +} + +/**************** + * Returns: true if this may be a prime + */ +static int +check_prime( MPI prime, MPI val_2 ) +{ + int i; + unsigned x; + int count=0; + + /* check against small primes */ + for(i=0; (x = small_prime_numbers[i]); i++ ) { + if( mpi_divisible_ui( prime, x ) ) + return 0; + } + + /* a quick fermat test */ + { + MPI result = mpi_alloc_like( prime ); + MPI pminus1 = mpi_alloc_like( prime ); + mpi_sub_ui( pminus1, prime, 1); + mpi_powm( result, val_2, pminus1, prime ); + mpi_free( pminus1 ); + if( mpi_cmp_ui( result, 1 ) ) { /* if composite */ + mpi_free( result ); + progress('.'); + return 0; + } + mpi_free( result ); + } + + /* perform stronger tests */ + if( is_prime(prime, 5, &count ) ) + return 1; /* is probably a prime */ + progress('.'); + return 0; +} + + +/**************** + * Return true if n is probably a prime + */ +static int +is_prime( MPI n, int steps, int *count ) +{ + MPI x = mpi_alloc( mpi_get_nlimbs( n ) ); + MPI y = mpi_alloc( mpi_get_nlimbs( n ) ); + MPI z = mpi_alloc( mpi_get_nlimbs( n ) ); + MPI nminus1 = mpi_alloc( mpi_get_nlimbs( n ) ); + MPI a2 = mpi_alloc_set_ui( 2 ); + MPI q; + unsigned i, j, k; + int rc = 0; + unsigned nbits = mpi_get_nbits( n ); + + mpi_sub_ui( nminus1, n, 1 ); + + /* find q and k, so that n = 1 + 2^k * q */ + q = mpi_copy( nminus1 ); + k = mpi_trailing_zeros( q ); + mpi_tdiv_q_2exp(q, q, k); + + for(i=0 ; i < steps; i++ ) { + ++*count; + if( !i ) { + mpi_set_ui( x, 2 ); + } + else { + /*mpi_set_bytes( x, nbits-1, get_random_byte, 0 );*/ + { char *p = get_random_bits( nbits, 0, 0 ); + mpi_set_buffer( x, p, (nbits+7)/8, 0 ); + m_free(p); + } + /* make sure that the number is smaller than the prime + * and keep the randomness of the high bit */ + if( mpi_test_bit( x, nbits-2 ) ) { + mpi_set_highbit( x, nbits-2 ); /* clear all higher bits */ + } + else { + mpi_set_highbit( x, nbits-2 ); + mpi_clear_bit( x, nbits-2 ); + } + assert( mpi_cmp( x, nminus1 ) < 0 && mpi_cmp_ui( x, 1 ) > 0 ); + } + mpi_powm( y, x, q, n); + if( mpi_cmp_ui(y, 1) && mpi_cmp( y, nminus1 ) ) { + for( j=1; j < k && mpi_cmp( y, nminus1 ); j++ ) { + mpi_powm(y, y, a2, n); + if( !mpi_cmp_ui( y, 1 ) ) + goto leave; /* not a prime */ + } + if( mpi_cmp( y, nminus1 ) ) + goto leave; /* not a prime */ + } + progress('+'); + } + rc = 1; /* may be a prime */ + + leave: + mpi_free( x ); + mpi_free( y ); + mpi_free( z ); + mpi_free( nminus1 ); + mpi_free( q ); + + return rc; +} + + +static void +m_out_of_n( char *array, int m, int n ) +{ + int i=0, i1=0, j=0, jp=0, j1=0, k1=0, k2=0; + + if( !m || m >= n ) + return; + + if( m == 1 ) { /* special case */ + for(i=0; i < n; i++ ) + if( array[i] ) { + array[i++] = 0; + if( i >= n ) + i = 0; + array[i] = 1; + return; + } + BUG(); + } + + for(j=1; j < n; j++ ) { + if( array[n-1] == array[n-j-1] ) + continue; + j1 = j; + break; + } + + if( m & 1 ) { /* m is odd */ + if( array[n-1] ) { + if( j1 & 1 ) { + k1 = n - j1; + k2 = k1+2; + if( k2 > n ) + k2 = n; + goto leave; + } + goto scan; + } + k2 = n - j1 - 1; + if( k2 == 0 ) { + k1 = i; + k2 = n - j1; + } + else if( array[k2] && array[k2-1] ) + k1 = n; + else + k1 = k2 + 1; + } + else { /* m is even */ + if( !array[n-1] ) { + k1 = n - j1; + k2 = k1 + 1; + goto leave; + } + + if( !(j1 & 1) ) { + k1 = n - j1; + k2 = k1+2; + if( k2 > n ) + k2 = n; + goto leave; + } + scan: + jp = n - j1 - 1; + for(i=1; i <= jp; i++ ) { + i1 = jp + 2 - i; + if( array[i1-1] ) { + if( array[i1-2] ) { + k1 = i1 - 1; + k2 = n - j1; + } + else { + k1 = i1 - 1; + k2 = n + 1 - j1; + } + goto leave; + } + } + k1 = 1; + k2 = n + 1 - m; + } + leave: + array[k1-1] = !array[k1-1]; + array[k2-1] = !array[k2-1]; +} + diff --git a/cipher/pubkey.c b/cipher/pubkey.c new file mode 100644 index 000000000..9136fa544 --- /dev/null +++ b/cipher/pubkey.c @@ -0,0 +1,618 @@ +/* pubkey.c - pubkey dispatcher + * Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + +#include <config.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> +#include <assert.h> +#include "util.h" +#include "errors.h" +#include "mpi.h" +#include "cipher.h" +#include "elgamal.h" +#include "dsa.h" +#include "rsa.h" +#include "dynload.h" + + +#define TABLE_SIZE 10 + +struct pubkey_table_s { + const char *name; + int algo; + int npkey; + int nskey; + int nenc; + int nsig; + int use; + int (*generate)( int algo, unsigned nbits, MPI *skey, MPI **retfactors ); + int (*check_secret_key)( int algo, MPI *skey ); + int (*encrypt)( int algo, MPI *resarr, MPI data, MPI *pkey ); + int (*decrypt)( int algo, MPI *result, MPI *data, MPI *skey ); + int (*sign)( int algo, MPI *resarr, MPI data, MPI *skey ); + int (*verify)( int algo, MPI hash, MPI *data, MPI *pkey, + int (*cmp)(void *, MPI), void *opaquev ); + unsigned (*get_nbits)( int algo, MPI *pkey ); +}; + +static struct pubkey_table_s pubkey_table[TABLE_SIZE]; +static int disabled_algos[TABLE_SIZE]; + + +static int +dummy_generate( int algo, unsigned nbits, MPI *skey, MPI **retfactors ) +{ log_bug("no generate() for %d\n", algo ); return G10ERR_PUBKEY_ALGO; } + +static int +dummy_check_secret_key( int algo, MPI *skey ) +{ log_bug("no check_secret_key() for %d\n", algo ); return G10ERR_PUBKEY_ALGO; } + +static int +dummy_encrypt( int algo, MPI *resarr, MPI data, MPI *pkey ) +{ log_bug("no encrypt() for %d\n", algo ); return G10ERR_PUBKEY_ALGO; } + +static int +dummy_decrypt( int algo, MPI *result, MPI *data, MPI *skey ) +{ log_bug("no decrypt() for %d\n", algo ); return G10ERR_PUBKEY_ALGO; } + +static int +dummy_sign( int algo, MPI *resarr, MPI data, MPI *skey ) +{ log_bug("no sign() for %d\n", algo ); return G10ERR_PUBKEY_ALGO; } + +static int +dummy_verify( int algo, MPI hash, MPI *data, MPI *pkey, + int (*cmp)(void *, MPI), void *opaquev ) +{ log_bug("no verify() for %d\n", algo ); return G10ERR_PUBKEY_ALGO; } + +static unsigned +dummy_get_nbits( int algo, MPI *pkey ) +{ log_bug("no get_nbits() for %d\n", algo ); return 0; } + + +/**************** + * Put the static entries into the table. + * This is out constructor function which fill the table + * of algorithms with the one we have statically linked. + */ +static void +setup_pubkey_table(void) +{ + int i; + + i = 0; + pubkey_table[i].algo = PUBKEY_ALGO_ELGAMAL; + pubkey_table[i].name = elg_get_info( pubkey_table[i].algo, + &pubkey_table[i].npkey, + &pubkey_table[i].nskey, + &pubkey_table[i].nenc, + &pubkey_table[i].nsig, + &pubkey_table[i].use ); + pubkey_table[i].generate = elg_generate; + pubkey_table[i].check_secret_key = elg_check_secret_key; + pubkey_table[i].encrypt = elg_encrypt; + pubkey_table[i].decrypt = elg_decrypt; + pubkey_table[i].sign = elg_sign; + pubkey_table[i].verify = elg_verify; + pubkey_table[i].get_nbits = elg_get_nbits; + if( !pubkey_table[i].name ) + BUG(); + i++; + pubkey_table[i].algo = PUBKEY_ALGO_ELGAMAL_E; + pubkey_table[i].name = elg_get_info( pubkey_table[i].algo, + &pubkey_table[i].npkey, + &pubkey_table[i].nskey, + &pubkey_table[i].nenc, + &pubkey_table[i].nsig, + &pubkey_table[i].use ); + pubkey_table[i].generate = elg_generate; + pubkey_table[i].check_secret_key = elg_check_secret_key; + pubkey_table[i].encrypt = elg_encrypt; + pubkey_table[i].decrypt = elg_decrypt; + pubkey_table[i].sign = elg_sign; + pubkey_table[i].verify = elg_verify; + pubkey_table[i].get_nbits = elg_get_nbits; + if( !pubkey_table[i].name ) + BUG(); + i++; + pubkey_table[i].algo = PUBKEY_ALGO_DSA; + pubkey_table[i].name = dsa_get_info( pubkey_table[i].algo, + &pubkey_table[i].npkey, + &pubkey_table[i].nskey, + &pubkey_table[i].nenc, + &pubkey_table[i].nsig, + &pubkey_table[i].use ); + pubkey_table[i].generate = dsa_generate; + pubkey_table[i].check_secret_key = dsa_check_secret_key; + pubkey_table[i].encrypt = dummy_encrypt; + pubkey_table[i].decrypt = dummy_decrypt; + pubkey_table[i].sign = dsa_sign; + pubkey_table[i].verify = dsa_verify; + pubkey_table[i].get_nbits = dsa_get_nbits; + if( !pubkey_table[i].name ) + BUG(); + i++; + + pubkey_table[i].algo = PUBKEY_ALGO_RSA; + pubkey_table[i].name = rsa_get_info( pubkey_table[i].algo, + &pubkey_table[i].npkey, + &pubkey_table[i].nskey, + &pubkey_table[i].nenc, + &pubkey_table[i].nsig, + &pubkey_table[i].use ); + pubkey_table[i].generate = rsa_generate; + pubkey_table[i].check_secret_key = rsa_check_secret_key; + pubkey_table[i].encrypt = rsa_encrypt; + pubkey_table[i].decrypt = rsa_decrypt; + pubkey_table[i].sign = rsa_sign; + pubkey_table[i].verify = rsa_verify; + pubkey_table[i].get_nbits = rsa_get_nbits; + if( !pubkey_table[i].name ) + BUG(); + i++; + pubkey_table[i].algo = PUBKEY_ALGO_RSA_E; + pubkey_table[i].name = rsa_get_info( pubkey_table[i].algo, + &pubkey_table[i].npkey, + &pubkey_table[i].nskey, + &pubkey_table[i].nenc, + &pubkey_table[i].nsig, + &pubkey_table[i].use ); + pubkey_table[i].generate = rsa_generate; + pubkey_table[i].check_secret_key = rsa_check_secret_key; + pubkey_table[i].encrypt = rsa_encrypt; + pubkey_table[i].decrypt = rsa_decrypt; + pubkey_table[i].sign = dummy_sign; + pubkey_table[i].verify = dummy_verify; + pubkey_table[i].get_nbits = rsa_get_nbits; + if( !pubkey_table[i].name ) + BUG(); + i++; + pubkey_table[i].algo = PUBKEY_ALGO_RSA_S; + pubkey_table[i].name = rsa_get_info( pubkey_table[i].algo, + &pubkey_table[i].npkey, + &pubkey_table[i].nskey, + &pubkey_table[i].nenc, + &pubkey_table[i].nsig, + &pubkey_table[i].use ); + pubkey_table[i].generate = rsa_generate; + pubkey_table[i].check_secret_key = rsa_check_secret_key; + pubkey_table[i].encrypt = dummy_encrypt; + pubkey_table[i].decrypt = dummy_decrypt; + pubkey_table[i].sign = rsa_sign; + pubkey_table[i].verify = rsa_verify; + pubkey_table[i].get_nbits = rsa_get_nbits; + if( !pubkey_table[i].name ) + BUG(); + i++; + + for( ; i < TABLE_SIZE; i++ ) + pubkey_table[i].name = NULL; +} + + +/**************** + * Try to load all modules and return true if new modules are available + */ +static int +load_pubkey_modules(void) +{ + static int initialized = 0; + static int done = 0; + void *context = NULL; + struct pubkey_table_s *ct; + int ct_idx; + int i; + const char *name; + int any = 0; + + + if( !initialized ) { + cipher_modules_constructor(); + setup_pubkey_table(); + initialized = 1; + return 1; + } + if( done ) + return 0; + done = 1; + for(ct_idx=0, ct = pubkey_table; ct_idx < TABLE_SIZE; ct_idx++,ct++ ) { + if( !ct->name ) + break; + } + if( ct_idx >= TABLE_SIZE-1 ) + BUG(); /* table already full */ + /* now load all extensions */ + while( (name = enum_gnupgext_pubkeys( &context, &ct->algo, + &ct->npkey, &ct->nskey, &ct->nenc, + &ct->nsig, &ct->use, + &ct->generate, + &ct->check_secret_key, + &ct->encrypt, + &ct->decrypt, + &ct->sign, + &ct->verify, + &ct->get_nbits )) ) { + for(i=0; pubkey_table[i].name; i++ ) + if( pubkey_table[i].algo == ct->algo ) + break; + if( pubkey_table[i].name ) { + log_info("skipping pubkey %d: already loaded\n", ct->algo ); + continue; + } + + if( !ct->generate ) ct->generate = dummy_generate; + if( !ct->check_secret_key ) ct->check_secret_key = + dummy_check_secret_key; + if( !ct->encrypt ) ct->encrypt = dummy_encrypt; + if( !ct->decrypt ) ct->decrypt = dummy_decrypt; + if( !ct->sign ) ct->sign = dummy_sign; + if( !ct->verify ) ct->verify = dummy_verify; + if( !ct->get_nbits ) ct->get_nbits= dummy_get_nbits; + /* put it into the table */ + if( g10_opt_verbose > 1 ) + log_info("loaded pubkey %d (%s)\n", ct->algo, name); + ct->name = name; + ct_idx++; + ct++; + any = 1; + /* check whether there are more available table slots */ + if( ct_idx >= TABLE_SIZE-1 ) { + log_info("pubkey table full; ignoring other extensions\n"); + break; + } + } + enum_gnupgext_pubkeys( &context, NULL, NULL, NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, NULL, NULL, NULL ); + return any; +} + + +/**************** + * Map a string to the pubkey algo + */ +int +string_to_pubkey_algo( const char *string ) +{ + int i; + const char *s; + + do { + for(i=0; (s=pubkey_table[i].name); i++ ) + if( !ascii_strcasecmp( s, string ) ) + return pubkey_table[i].algo; + } while( load_pubkey_modules() ); + return 0; +} + + +/**************** + * Map a pubkey algo to a string + */ +const char * +pubkey_algo_to_string( int algo ) +{ + int i; + + do { + for(i=0; pubkey_table[i].name; i++ ) + if( pubkey_table[i].algo == algo ) + return pubkey_table[i].name; + } while( load_pubkey_modules() ); + return NULL; +} + + +void +disable_pubkey_algo( int algo ) +{ + int i; + + for(i=0; i < DIM(disabled_algos); i++ ) { + if( !disabled_algos[i] || disabled_algos[i] == algo ) { + disabled_algos[i] = algo; + return; + } + } + log_fatal("can't disable pubkey algo %d: table full\n", algo ); +} + + +int +check_pubkey_algo( int algo ) +{ + return check_pubkey_algo2( algo, 0 ); +} + +/**************** + * a use of 0 means: don't care + */ +int +check_pubkey_algo2( int algo, unsigned use ) +{ + int i; + + do { + for(i=0; pubkey_table[i].name; i++ ) + if( pubkey_table[i].algo == algo ) { + if( (use & PUBKEY_USAGE_SIG) + && !(pubkey_table[i].use & PUBKEY_USAGE_SIG) ) + return G10ERR_WR_PUBKEY_ALGO; + if( (use & PUBKEY_USAGE_ENC) + && !(pubkey_table[i].use & PUBKEY_USAGE_ENC) ) + return G10ERR_WR_PUBKEY_ALGO; + + for(i=0; i < DIM(disabled_algos); i++ ) { + if( disabled_algos[i] == algo ) + return G10ERR_PUBKEY_ALGO; + } + return 0; /* okay */ + } + } while( load_pubkey_modules() ); + return G10ERR_PUBKEY_ALGO; +} + + + + +/**************** + * Return the number of public key material numbers + */ +int +pubkey_get_npkey( int algo ) +{ + int i; + do { + for(i=0; pubkey_table[i].name; i++ ) + if( pubkey_table[i].algo == algo ) + return pubkey_table[i].npkey; + } while( load_pubkey_modules() ); + return 0; +} + +/**************** + * Return the number of secret key material numbers + */ +int +pubkey_get_nskey( int algo ) +{ + int i; + do { + for(i=0; pubkey_table[i].name; i++ ) + if( pubkey_table[i].algo == algo ) + return pubkey_table[i].nskey; + } while( load_pubkey_modules() ); + if( is_RSA(algo) ) /* special hack, so that we are able to */ + return 6; /* see the RSA keyids */ + return 0; +} + +/**************** + * Return the number of signature material numbers + */ +int +pubkey_get_nsig( int algo ) +{ + int i; + do { + for(i=0; pubkey_table[i].name; i++ ) + if( pubkey_table[i].algo == algo ) + return pubkey_table[i].nsig; + } while( load_pubkey_modules() ); + if( is_RSA(algo) ) /* special hack, so that we are able to */ + return 1; /* see the RSA keyids */ + return 0; +} + +/**************** + * Return the number of encryption material numbers + */ +int +pubkey_get_nenc( int algo ) +{ + int i; + do { + for(i=0; pubkey_table[i].name; i++ ) + if( pubkey_table[i].algo == algo ) + return pubkey_table[i].nenc; + } while( load_pubkey_modules() ); + if( is_RSA(algo) ) /* special hack, so that we are able to */ + return 1; /* see the RSA keyids */ + return 0; +} + +/**************** + * Get the number of nbits from the public key + */ +unsigned +pubkey_nbits( int algo, MPI *pkey ) +{ + int i; + + do { + for(i=0; pubkey_table[i].name; i++ ) + if( pubkey_table[i].algo == algo ) + return (*pubkey_table[i].get_nbits)( algo, pkey ); + } while( load_pubkey_modules() ); + if( is_RSA(algo) ) /* we always wanna see the length of a key :-) */ + return mpi_get_nbits( pkey[0] ); + return 0; +} + + +int +pubkey_generate( int algo, unsigned nbits, MPI *skey, MPI **retfactors ) +{ + int i; + + do { + for(i=0; pubkey_table[i].name; i++ ) + if( pubkey_table[i].algo == algo ) + return (*pubkey_table[i].generate)( algo, nbits, + skey, retfactors ); + } while( load_pubkey_modules() ); + return G10ERR_PUBKEY_ALGO; +} + + +int +pubkey_check_secret_key( int algo, MPI *skey ) +{ + int i; + + do { + for(i=0; pubkey_table[i].name; i++ ) + if( pubkey_table[i].algo == algo ) + return (*pubkey_table[i].check_secret_key)( algo, skey ); + } while( load_pubkey_modules() ); + return G10ERR_PUBKEY_ALGO; +} + + +/**************** + * This is the interface to the public key encryption. + * Encrypt DATA with PKEY and put it into RESARR which + * should be an array of MPIs of size PUBKEY_MAX_NENC (or less if the + * algorithm allows this - check with pubkey_get_nenc() ) + */ +int +pubkey_encrypt( int algo, MPI *resarr, MPI data, MPI *pkey ) +{ + int i, rc; + + if( DBG_CIPHER ) { + log_debug("pubkey_encrypt: algo=%d\n", algo ); + for(i=0; i < pubkey_get_npkey(algo); i++ ) + log_mpidump(" pkey:", pkey[i] ); + log_mpidump(" data:", data ); + } + + do { + for(i=0; pubkey_table[i].name; i++ ) + if( pubkey_table[i].algo == algo ) { + rc = (*pubkey_table[i].encrypt)( algo, resarr, data, pkey ); + goto ready; + } + } while( load_pubkey_modules() ); + rc = G10ERR_PUBKEY_ALGO; + ready: + if( !rc && DBG_CIPHER ) { + for(i=0; i < pubkey_get_nenc(algo); i++ ) + log_mpidump(" encr:", resarr[i] ); + } + return rc; +} + + + +/**************** + * This is the interface to the public key decryption. + * ALGO gives the algorithm to use and this implicitly determines + * the size of the arrays. + * result is a pointer to a mpi variable which will receive a + * newly allocated mpi or NULL in case of an error. + */ +int +pubkey_decrypt( int algo, MPI *result, MPI *data, MPI *skey ) +{ + int i, rc; + + *result = NULL; /* so the caller can always do an mpi_free */ + if( DBG_CIPHER ) { + log_debug("pubkey_decrypt: algo=%d\n", algo ); + for(i=0; i < pubkey_get_nskey(algo); i++ ) + log_mpidump(" skey:", skey[i] ); + for(i=0; i < pubkey_get_nenc(algo); i++ ) + log_mpidump(" data:", data[i] ); + } + + do { + for(i=0; pubkey_table[i].name; i++ ) + if( pubkey_table[i].algo == algo ) { + rc = (*pubkey_table[i].decrypt)( algo, result, data, skey ); + goto ready; + } + } while( load_pubkey_modules() ); + rc = G10ERR_PUBKEY_ALGO; + ready: + if( !rc && DBG_CIPHER ) { + log_mpidump(" plain:", *result ); + } + return rc; +} + + +/**************** + * This is the interface to the public key signing. + * Sign data with skey and put the result into resarr which + * should be an array of MPIs of size PUBKEY_MAX_NSIG (or less if the + * algorithm allows this - check with pubkey_get_nsig() ) + */ +int +pubkey_sign( int algo, MPI *resarr, MPI data, MPI *skey ) +{ + int i, rc; + + if( DBG_CIPHER ) { + log_debug("pubkey_sign: algo=%d\n", algo ); + for(i=0; i < pubkey_get_nskey(algo); i++ ) + log_mpidump(" skey:", skey[i] ); + log_mpidump(" data:", data ); + } + + do { + for(i=0; pubkey_table[i].name; i++ ) + if( pubkey_table[i].algo == algo ) { + rc = (*pubkey_table[i].sign)( algo, resarr, data, skey ); + goto ready; + } + } while( load_pubkey_modules() ); + rc = G10ERR_PUBKEY_ALGO; + ready: + if( !rc && DBG_CIPHER ) { + for(i=0; i < pubkey_get_nsig(algo); i++ ) + log_mpidump(" sig:", resarr[i] ); + } + return rc; +} + +/**************** + * Verify a public key signature. + * Return 0 if the signature is good + */ +int +pubkey_verify( int algo, MPI hash, MPI *data, MPI *pkey, + int (*cmp)(void *, MPI), void *opaquev ) +{ + int i, rc; + + do { + for(i=0; pubkey_table[i].name; i++ ) + if( pubkey_table[i].algo == algo ) { + rc = (*pubkey_table[i].verify)( algo, hash, data, pkey, + cmp, opaquev ); + goto ready; + } + } while( load_pubkey_modules() ); + rc = G10ERR_PUBKEY_ALGO; + ready: + return rc; +} + diff --git a/cipher/rand-internal.h b/cipher/rand-internal.h new file mode 100644 index 000000000..6f5b52bae --- /dev/null +++ b/cipher/rand-internal.h @@ -0,0 +1,31 @@ +/* rand-internal.h - header to glue the random functions + * Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ +#ifndef G10_RAND_INTERNAL_H +#define G10_RAND_INTERNAL_H + +void rndlinux_constructor(void); +void rndunix_constructor(void); +void rndw32_constructor(void); +void rndos2_constructor(void); +void rndatari_constructor(void); +void rndmvs_constructor(void); +void rndriscos_constructor(void); + +#endif /*G10_RAND_INTERNAL_H*/ diff --git a/cipher/random.c b/cipher/random.c new file mode 100644 index 000000000..8c552bd3b --- /dev/null +++ b/cipher/random.c @@ -0,0 +1,687 @@ +/* random.c - random number generator + * Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + + +/**************** + * This random number generator is modelled after the one described + * in Peter Gutmann's Paper: "Software Generation of Practically + * Strong Random Numbers". + */ + + +#include <config.h> +#include <stdio.h> +#include <stdlib.h> +#include <assert.h> +#include <errno.h> +#include <string.h> +#include <time.h> +#include <sys/time.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> +#include <fcntl.h> +#ifdef HAVE_GETHRTIME + #include <sys/times.h> +#endif +#ifdef HAVE_GETTIMEOFDAY + #include <sys/times.h> +#endif +#ifdef HAVE_GETRUSAGE + #include <sys/resource.h> +#endif +#ifdef __MINGW32__ + #include <process.h> +#endif +#include "util.h" +#include "rmd.h" +#include "ttyio.h" +#include "i18n.h" +#include "random.h" +#include "rand-internal.h" +#include "dynload.h" + + +#ifndef RAND_MAX /* for SunOS */ + #define RAND_MAX 32767 +#endif + + +#if SIZEOF_UNSIGNED_LONG == 8 + #define ADD_VALUE 0xa5a5a5a5a5a5a5a5 +#elif SIZEOF_UNSIGNED_LONG == 4 + #define ADD_VALUE 0xa5a5a5a5 +#else + #error weird size for an unsigned long +#endif + +#define BLOCKLEN 64 /* hash this amount of bytes */ +#define DIGESTLEN 20 /* into a digest of this length (rmd160) */ +/* poolblocks is the number of digests which make up the pool + * and poolsize must be a multiple of the digest length + * to make the AND operations faster, the size should also be + * a multiple of ulong + */ +#define POOLBLOCKS 30 +#define POOLSIZE (POOLBLOCKS*DIGESTLEN) +#if (POOLSIZE % SIZEOF_UNSIGNED_LONG) + #error Please make sure that poolsize is a multiple of ulong +#endif +#define POOLWORDS (POOLSIZE / SIZEOF_UNSIGNED_LONG) + + +static int is_initialized; +#define MASK_LEVEL(a) do {if( a > 2 ) a = 2; else if( a < 0 ) a = 0; } while(0) +static char *rndpool; /* allocated size is POOLSIZE+BLOCKLEN */ +static char *keypool; /* allocated size is POOLSIZE+BLOCKLEN */ +static size_t pool_readpos; +static size_t pool_writepos; +static int pool_filled; +static int pool_balance; +static int just_mixed; +static int did_initial_extra_seeding; +static char *seed_file_name; +static int allow_seed_file_update; + +static int secure_alloc; +static int quick_test; +static int faked_rng; + + +static void read_pool( byte *buffer, size_t length, int level ); +static void add_randomness( const void *buffer, size_t length, int source ); +static void random_poll(void); +static void read_random_source( int requester, size_t length, int level); +static int gather_faked( void (*add)(const void*, size_t, int), int requester, + size_t length, int level ); + +static struct { + ulong mixrnd; + ulong mixkey; + ulong slowpolls; + ulong fastpolls; + ulong getbytes1; + ulong ngetbytes1; + ulong getbytes2; + ulong ngetbytes2; + ulong addbytes; + ulong naddbytes; +} rndstats; + +static void +initialize(void) +{ + /* The data buffer is allocated somewhat larger, so that + * we can use this extra space (which is allocated in secure memory) + * as a temporary hash buffer */ + rndpool = secure_alloc ? m_alloc_secure_clear(POOLSIZE+BLOCKLEN) + : m_alloc_clear(POOLSIZE+BLOCKLEN); + keypool = secure_alloc ? m_alloc_secure_clear(POOLSIZE+BLOCKLEN) + : m_alloc_clear(POOLSIZE+BLOCKLEN); + is_initialized = 1; + cipher_modules_constructor(); +} + +static void +burn_stack (int bytes) +{ + char buf[128]; + + memset (buf, 0, sizeof buf); + bytes -= sizeof buf; + if (bytes > 0) + burn_stack (bytes); +} + +void +random_dump_stats() +{ + fprintf(stderr, + "random usage: poolsize=%d mixed=%lu polls=%lu/%lu added=%lu/%lu\n" + " outmix=%lu getlvl1=%lu/%lu getlvl2=%lu/%lu\n", + POOLSIZE, rndstats.mixrnd, rndstats.slowpolls, rndstats.fastpolls, + rndstats.naddbytes, rndstats.addbytes, + rndstats.mixkey, rndstats.ngetbytes1, rndstats.getbytes1, + rndstats.ngetbytes2, rndstats.getbytes2 ); +} + +void +secure_random_alloc() +{ + secure_alloc = 1; +} + + +int +quick_random_gen( int onoff ) +{ + int last; + + read_random_source(0,0,0); /* init */ + last = quick_test; + if( onoff != -1 ) + quick_test = onoff; + return faked_rng? 1 : last; +} + + +/**************** + * Fill the buffer with LENGTH bytes of cryptographically strong + * random bytes. level 0 is not very strong, 1 is strong enough + * for most usage, 2 is good for key generation stuff but may be very slow. + */ +void +randomize_buffer( byte *buffer, size_t length, int level ) +{ + char *p = get_random_bits( length*8, level, 1 ); + memcpy( buffer, p, length ); + m_free(p); +} + + +int +random_is_faked() +{ + if( !is_initialized ) + initialize(); + return faked_rng || quick_test; +} + +/**************** + * Return a pointer to a randomized buffer of level 0 and LENGTH bits + * caller must free the buffer. + * Note: The returned value is rounded up to bytes. + */ +byte * +get_random_bits( size_t nbits, int level, int secure ) +{ + byte *buf, *p; + size_t nbytes = (nbits+7)/8; + + if( quick_test && level > 1 ) + level = 1; + MASK_LEVEL(level); + if( level == 1 ) { + rndstats.getbytes1 += nbytes; + rndstats.ngetbytes1++; + } + else if( level >= 2 ) { + rndstats.getbytes2 += nbytes; + rndstats.ngetbytes2++; + } + + buf = secure && secure_alloc ? m_alloc_secure( nbytes ) : m_alloc( nbytes ); + for( p = buf; nbytes > 0; ) { + size_t n = nbytes > POOLSIZE? POOLSIZE : nbytes; + read_pool( p, n, level ); + nbytes -= n; + p += n; + } + return buf; +} + + +/**************** + * Mix the pool + */ +static void +mix_pool(byte *pool) +{ + char *hashbuf = pool + POOLSIZE; + char *p, *pend; + int i, n; + RMD160_CONTEXT md; + + rmd160_init( &md ); + #if DIGESTLEN != 20 + #error must have a digest length of 20 for ripe-md-160 + #endif + /* loop over the pool */ + pend = pool + POOLSIZE; + memcpy(hashbuf, pend - DIGESTLEN, DIGESTLEN ); + memcpy(hashbuf+DIGESTLEN, pool, BLOCKLEN-DIGESTLEN); + rmd160_mixblock( &md, hashbuf); + memcpy(pool, hashbuf, 20 ); + + p = pool; + for( n=1; n < POOLBLOCKS; n++ ) { + memcpy(hashbuf, p, DIGESTLEN ); + + p += DIGESTLEN; + if( p+DIGESTLEN+BLOCKLEN < pend ) + memcpy(hashbuf+DIGESTLEN, p+DIGESTLEN, BLOCKLEN-DIGESTLEN); + else { + char *pp = p+DIGESTLEN; + for(i=DIGESTLEN; i < BLOCKLEN; i++ ) { + if( pp >= pend ) + pp = pool; + hashbuf[i] = *pp++; + } + } + + rmd160_mixblock( &md, hashbuf); + memcpy(p, hashbuf, 20 ); + } + burn_stack (384); /* for the rmd160_mixblock() */ +} + + +void +set_random_seed_file( const char *name ) +{ + if( seed_file_name ) + BUG(); + seed_file_name = m_strdup( name ); +} + +/**************** + * Read in a seed form the random_seed file + * and return true if this was successful + */ +static int +read_seed_file(void) +{ + int fd; + struct stat sb; + unsigned char buffer[POOLSIZE]; + int n; + + if( !seed_file_name ) + return 0; + + #ifdef HAVE_DOSISH_SYSTEM + fd = open( seed_file_name, O_RDONLY | O_BINARY ); + #else + fd = open( seed_file_name, O_RDONLY ); + #endif + if( fd == -1 && errno == ENOENT) { + allow_seed_file_update = 1; + return 0; + } + + if( fd == -1 ) { + log_info(_("can't open `%s': %s\n"), seed_file_name, strerror(errno) ); + return 0; + } + if( fstat( fd, &sb ) ) { + log_info(_("can't stat `%s': %s\n"), seed_file_name, strerror(errno) ); + close(fd); + return 0; + } + if( !S_ISREG(sb.st_mode) ) { + log_info(_("`%s' is not a regular file - ignored\n"), seed_file_name ); + close(fd); + return 0; + } + if( !sb.st_size ) { + log_info(_("note: random_seed file is empty\n") ); + close(fd); + allow_seed_file_update = 1; + return 0; + } + if( sb.st_size != POOLSIZE ) { + log_info(_("warning: invalid size of random_seed file - not used\n") ); + close(fd); + return 0; + } + do { + n = read( fd, buffer, POOLSIZE ); + } while( n == -1 && errno == EINTR ); + if( n != POOLSIZE ) { + log_fatal(_("can't read `%s': %s\n"), seed_file_name,strerror(errno) ); + close(fd); + return 0; + } + + close(fd); + + add_randomness( buffer, POOLSIZE, 0 ); + /* add some minor entropy to the pool now (this will also force a mixing) */ + { pid_t x = getpid(); + add_randomness( &x, sizeof(x), 0 ); + } + { time_t x = time(NULL); + add_randomness( &x, sizeof(x), 0 ); + } + { clock_t x = clock(); + add_randomness( &x, sizeof(x), 0 ); + } + /* And read a few bytes from our entropy source. By using + * a level of 0 this will not block and might not return anything + * with some entropy drivers, however the rndlinux driver will use + * /dev/urandom and return some stuff - Do not read to much as we + * want to be friendly to the scare system entropy resource. */ + read_random_source( 0, 16, 0 ); + + allow_seed_file_update = 1; + return 1; +} + +void +update_random_seed_file() +{ + ulong *sp, *dp; + int fd, i; + + if( !seed_file_name || !is_initialized || !pool_filled ) + return; + if( !allow_seed_file_update ) { + log_info(_("note: random_seed file not updated\n")); + return; + } + + + /* copy the entropy pool to a scratch pool and mix both of them */ + for(i=0,dp=(ulong*)keypool, sp=(ulong*)rndpool; + i < POOLWORDS; i++, dp++, sp++ ) { + *dp = *sp + ADD_VALUE; + } + mix_pool(rndpool); rndstats.mixrnd++; + mix_pool(keypool); rndstats.mixkey++; + + #ifdef HAVE_DOSISH_SYSTEM + fd = open( seed_file_name, O_WRONLY|O_CREAT|O_TRUNC|O_BINARY, + S_IRUSR|S_IWUSR ); + #else + fd = open( seed_file_name, O_WRONLY|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR ); + #endif + if( fd == -1 ) { + log_info(_("can't create `%s': %s\n"), seed_file_name, strerror(errno) ); + return; + } + do { + i = write( fd, keypool, POOLSIZE ); + } while( i == -1 && errno == EINTR ); + if( i != POOLSIZE ) { + log_info(_("can't write `%s': %s\n"), seed_file_name, strerror(errno) ); + } + if( close(fd) ) + log_info(_("can't close `%s': %s\n"), seed_file_name, strerror(errno) ); +} + + +static void +read_pool( byte *buffer, size_t length, int level ) +{ + int i; + ulong *sp, *dp; + + if( length > POOLSIZE ) { + log_bug("too many random bits requested\n"); + } + + if( !pool_filled ) { + if( read_seed_file() ) + pool_filled = 1; + } + + /* For level 2 quality (key generation) we alwas make + * sure that the pool has been seeded enough initially */ + if( level == 2 && !did_initial_extra_seeding ) { + size_t needed; + + pool_balance = 0; + needed = length - pool_balance; + if( needed < POOLSIZE/2 ) + needed = POOLSIZE/2; + else if( needed > POOLSIZE ) + BUG(); + read_random_source( 3, needed, 2 ); + pool_balance += needed; + did_initial_extra_seeding=1; + } + + /* for level 2 make sure that there is enough random in the pool */ + if( level == 2 && pool_balance < length ) { + size_t needed; + + if( pool_balance < 0 ) + pool_balance = 0; + needed = length - pool_balance; + if( needed > POOLSIZE ) + BUG(); + read_random_source( 3, needed, 2 ); + pool_balance += needed; + } + + /* make sure the pool is filled */ + while( !pool_filled ) + random_poll(); + + /* do always a fast random poll */ + fast_random_poll(); + + if( !level ) { /* no need for cryptographic strong random */ + /* create a new pool */ + for(i=0,dp=(ulong*)keypool, sp=(ulong*)rndpool; + i < POOLWORDS; i++, dp++, sp++ ) + *dp = *sp + ADD_VALUE; + /* must mix both pools */ + mix_pool(rndpool); rndstats.mixrnd++; + mix_pool(keypool); rndstats.mixkey++; + memcpy( buffer, keypool, length ); + } + else { + /* mix the pool (if add_randomness() didn't it) */ + if( !just_mixed ) { + mix_pool(rndpool); + rndstats.mixrnd++; + } + /* create a new pool */ + for(i=0,dp=(ulong*)keypool, sp=(ulong*)rndpool; + i < POOLWORDS; i++, dp++, sp++ ) + *dp = *sp + ADD_VALUE; + /* and mix both pools */ + mix_pool(rndpool); rndstats.mixrnd++; + mix_pool(keypool); rndstats.mixkey++; + /* read the required data + * we use a readpoiter to read from a different postion each + * time */ + while( length-- ) { + *buffer++ = keypool[pool_readpos++]; + if( pool_readpos >= POOLSIZE ) + pool_readpos = 0; + pool_balance--; + } + if( pool_balance < 0 ) + pool_balance = 0; + /* and clear the keypool */ + memset( keypool, 0, POOLSIZE ); + } +} + + +/**************** + * Add LENGTH bytes of randomness from buffer to the pool. + * source may be used to specify the randomness source. + * Source is: + * 0 - used ony for initialization + * 1 - fast random poll function + * 2 - normal poll function + * 3 - used when level 2 random quality has been requested + * to do an extra pool seed. + */ +static void +add_randomness( const void *buffer, size_t length, int source ) +{ + const byte *p = buffer; + + if( !is_initialized ) + initialize(); + rndstats.addbytes += length; + rndstats.naddbytes++; + while( length-- ) { + rndpool[pool_writepos++] ^= *p++; + if( pool_writepos >= POOLSIZE ) { + if( source > 1 ) + pool_filled = 1; + pool_writepos = 0; + mix_pool(rndpool); rndstats.mixrnd++; + just_mixed = !length; + } + } +} + + + +static void +random_poll() +{ + rndstats.slowpolls++; + read_random_source( 2, POOLSIZE/5, 1 ); +} + + +void +fast_random_poll() +{ + static void (*fnc)( void (*)(const void*, size_t, int), int) = NULL; + static int initialized = 0; + + rndstats.fastpolls++; + if( !initialized ) { + if( !is_initialized ) + initialize(); + initialized = 1; + fnc = dynload_getfnc_fast_random_poll(); + } + if( fnc ) { + (*fnc)( add_randomness, 1 ); + return; + } + + /* fall back to the generic function */ + #if defined(HAVE_GETHRTIME) && !defined(HAVE_BROKEN_GETHRTIME) + { hrtime_t tv; + /* On some Solaris and HPUX system gethrtime raises an SIGILL, but we + * checked this with configure */ + tv = gethrtime(); + add_randomness( &tv, sizeof(tv), 1 ); + } + #elif defined (HAVE_GETTIMEOFDAY) + { struct timeval tv; + if( gettimeofday( &tv, NULL ) ) + BUG(); + add_randomness( &tv.tv_sec, sizeof(tv.tv_sec), 1 ); + add_randomness( &tv.tv_usec, sizeof(tv.tv_usec), 1 ); + } + #elif defined (HAVE_CLOCK_GETTIME) + { struct timespec tv; + if( clock_gettime( CLOCK_REALTIME, &tv ) == -1 ) + BUG(); + add_randomness( &tv.tv_sec, sizeof(tv.tv_sec), 1 ); + add_randomness( &tv.tv_nsec, sizeof(tv.tv_nsec), 1 ); + } + #else /* use times */ + #ifndef HAVE_DOSISH_SYSTEM + { struct tms buf; + times( &buf ); + add_randomness( &buf, sizeof buf, 1 ); + } + #endif + #endif + #ifdef HAVE_GETRUSAGE + #ifndef RUSAGE_SELF + #ifdef __GCC__ + #warning There is no RUSAGE_SELF on this system + #endif + #else + { struct rusage buf; + /* QNX/Neutrino does return ENOSYS - so we just ignore it and + * add whatever is in buf. In a chroot environment it might not + * work at all (i.e. because /proc/ is not accessible), so we better + * ignore all error codes and hope for the best + */ + getrusage( RUSAGE_SELF, &buf ); + + add_randomness( &buf, sizeof buf, 1 ); + memset( &buf, 0, sizeof buf ); + } + #endif + #endif + /* time and clock are available on all systems - so + * we better do it just in case one of the above functions + * didn't work */ + { time_t x = time(NULL); + add_randomness( &x, sizeof(x), 1 ); + } + { clock_t x = clock(); + add_randomness( &x, sizeof(x), 1 ); + } +} + + + +static void +read_random_source( int requester, size_t length, int level ) +{ + static int (*fnc)(void (*)(const void*, size_t, int), int, + size_t, int) = NULL; + if( !fnc ) { + if( !is_initialized ) + initialize(); + fnc = dynload_getfnc_gather_random(); + if( !fnc ) { + faked_rng = 1; + fnc = gather_faked; + } + if( !requester && !length && !level ) + return; /* init only */ + } + if( (*fnc)( add_randomness, requester, length, level ) < 0 ) + log_fatal("No way to gather entropy for the RNG\n"); +} + + +static int +gather_faked( void (*add)(const void*, size_t, int), int requester, + size_t length, int level ) +{ + static int initialized=0; + size_t n; + char *buffer, *p; + + if( !initialized ) { + log_info(_("WARNING: using insecure random number generator!!\n")); + tty_printf(_("The random number generator is only a kludge to let\n" + "it run - it is in no way a strong RNG!\n\n" + "DON'T USE ANY DATA GENERATED BY THIS PROGRAM!!\n\n")); + initialized=1; + #ifdef HAVE_RAND + srand(make_timestamp()*getpid()); + #else + srandom(make_timestamp()*getpid()); + #endif + } + + p = buffer = m_alloc( length ); + n = length; + #ifdef HAVE_RAND + while( n-- ) + *p++ = ((unsigned)(1 + (int) (256.0*rand()/(RAND_MAX+1.0)))-1); + #else + while( n-- ) + *p++ = ((unsigned)(1 + (int) (256.0*random()/(RAND_MAX+1.0)))-1); + #endif + add_randomness( buffer, length, requester ); + m_free(buffer); + return 0; /* okay */ +} + diff --git a/cipher/random.h b/cipher/random.h new file mode 100644 index 000000000..f4ba918bd --- /dev/null +++ b/cipher/random.h @@ -0,0 +1,41 @@ +/* random.h - random functions + * Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ +#ifndef G10_RANDOM_H +#define G10_RANDOM_H + +#include "types.h" + +/*-- random.c --*/ +void random_dump_stats(void); +void secure_random_alloc(void); +void set_random_seed_file(const char *); +void update_random_seed_file(void); +int quick_random_gen( int onoff ); +int random_is_faked(void); +void randomize_buffer( byte *buffer, size_t length, int level ); +byte *get_random_bits( size_t nbits, int level, int secure ); +void fast_random_poll( void ); + +/*-- rndw32.c --*/ +#ifdef USE_STATIC_RNDW32 +void rndw32_set_dll_name( const char *name ); +#endif + +#endif /*G10_RANDOM_H*/ diff --git a/cipher/rijndael.c b/cipher/rijndael.c new file mode 100644 index 000000000..cd29beaad --- /dev/null +++ b/cipher/rijndael.c @@ -0,0 +1,2234 @@ +/* Rijndael (AES) for GnuPG + * Copyright (C) 2000, 2001 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + ******************************************************************* + * The code here is based on the optimized implementation taken from + * http://www.esat.kuleuven.ac.be/~rijmen/rijndael/ on Oct 2, 2000, + * which carries this notice: + *------------------------------------------ + * rijndael-alg-fst.c v2.3 April '2000 + * + * Optimised ANSI C code + * + * authors: v1.0: Antoon Bosselaers + * v2.0: Vincent Rijmen + * v2.3: Paulo Barreto + * + * This code is placed in the public domain. + *------------------------------------------ + */ + +#include <config.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> /* for memcmp() */ + +#include "types.h" /* for byte and u32 typedefs */ +#include "util.h" +#include "errors.h" +#include "dynload.h" + +#define MAXKC (256/32) +#define MAXROUNDS 14 + + +static const char *selftest(void); + +typedef struct { + int ROUNDS; /* key-length-dependent number of rounds */ + int decryption_prepared; + byte keySched[MAXROUNDS+1][4][4]; /* key schedule */ + byte keySched2[MAXROUNDS+1][4][4]; /* key schedule */ +} RIJNDAEL_context; + + +static const byte S[256] = { + 99, 124, 119, 123, 242, 107, 111, 197, + 48, 1, 103, 43, 254, 215, 171, 118, + 202, 130, 201, 125, 250, 89, 71, 240, + 173, 212, 162, 175, 156, 164, 114, 192, + 183, 253, 147, 38, 54, 63, 247, 204, + 52, 165, 229, 241, 113, 216, 49, 21, + 4, 199, 35, 195, 24, 150, 5, 154, + 7, 18, 128, 226, 235, 39, 178, 117, + 9, 131, 44, 26, 27, 110, 90, 160, + 82, 59, 214, 179, 41, 227, 47, 132, + 83, 209, 0, 237, 32, 252, 177, 91, + 106, 203, 190, 57, 74, 76, 88, 207, + 208, 239, 170, 251, 67, 77, 51, 133, + 69, 249, 2, 127, 80, 60, 159, 168, + 81, 163, 64, 143, 146, 157, 56, 245, + 188, 182, 218, 33, 16, 255, 243, 210, + 205, 12, 19, 236, 95, 151, 68, 23, + 196, 167, 126, 61, 100, 93, 25, 115, + 96, 129, 79, 220, 34, 42, 144, 136, + 70, 238, 184, 20, 222, 94, 11, 219, + 224, 50, 58, 10, 73, 6, 36, 92, + 194, 211, 172, 98, 145, 149, 228, 121, + 231, 200, 55, 109, 141, 213, 78, 169, + 108, 86, 244, 234, 101, 122, 174, 8, + 186, 120, 37, 46, 28, 166, 180, 198, + 232, 221, 116, 31, 75, 189, 139, 138, + 112, 62, 181, 102, 72, 3, 246, 14, + 97, 53, 87, 185, 134, 193, 29, 158, + 225, 248, 152, 17, 105, 217, 142, 148, + 155, 30, 135, 233, 206, 85, 40, 223, + 140, 161, 137, 13, 191, 230, 66, 104, + 65, 153, 45, 15, 176, 84, 187, 22 +}; + + +static const byte T1[256][4] = { + { 0xc6,0x63,0x63,0xa5 }, { 0xf8,0x7c,0x7c,0x84 }, + { 0xee,0x77,0x77,0x99 }, { 0xf6,0x7b,0x7b,0x8d }, + { 0xff,0xf2,0xf2,0x0d }, { 0xd6,0x6b,0x6b,0xbd }, + { 0xde,0x6f,0x6f,0xb1 }, { 0x91,0xc5,0xc5,0x54 }, + { 0x60,0x30,0x30,0x50 }, { 0x02,0x01,0x01,0x03 }, + { 0xce,0x67,0x67,0xa9 }, { 0x56,0x2b,0x2b,0x7d }, + { 0xe7,0xfe,0xfe,0x19 }, { 0xb5,0xd7,0xd7,0x62 }, + { 0x4d,0xab,0xab,0xe6 }, { 0xec,0x76,0x76,0x9a }, + { 0x8f,0xca,0xca,0x45 }, { 0x1f,0x82,0x82,0x9d }, + { 0x89,0xc9,0xc9,0x40 }, { 0xfa,0x7d,0x7d,0x87 }, + { 0xef,0xfa,0xfa,0x15 }, { 0xb2,0x59,0x59,0xeb }, + { 0x8e,0x47,0x47,0xc9 }, { 0xfb,0xf0,0xf0,0x0b }, + { 0x41,0xad,0xad,0xec }, { 0xb3,0xd4,0xd4,0x67 }, + { 0x5f,0xa2,0xa2,0xfd }, { 0x45,0xaf,0xaf,0xea }, + { 0x23,0x9c,0x9c,0xbf }, { 0x53,0xa4,0xa4,0xf7 }, + { 0xe4,0x72,0x72,0x96 }, { 0x9b,0xc0,0xc0,0x5b }, + { 0x75,0xb7,0xb7,0xc2 }, { 0xe1,0xfd,0xfd,0x1c }, + { 0x3d,0x93,0x93,0xae }, { 0x4c,0x26,0x26,0x6a }, + { 0x6c,0x36,0x36,0x5a }, { 0x7e,0x3f,0x3f,0x41 }, + { 0xf5,0xf7,0xf7,0x02 }, { 0x83,0xcc,0xcc,0x4f }, + { 0x68,0x34,0x34,0x5c }, { 0x51,0xa5,0xa5,0xf4 }, + { 0xd1,0xe5,0xe5,0x34 }, { 0xf9,0xf1,0xf1,0x08 }, + { 0xe2,0x71,0x71,0x93 }, { 0xab,0xd8,0xd8,0x73 }, + { 0x62,0x31,0x31,0x53 }, { 0x2a,0x15,0x15,0x3f }, + { 0x08,0x04,0x04,0x0c }, { 0x95,0xc7,0xc7,0x52 }, + { 0x46,0x23,0x23,0x65 }, { 0x9d,0xc3,0xc3,0x5e }, + { 0x30,0x18,0x18,0x28 }, { 0x37,0x96,0x96,0xa1 }, + { 0x0a,0x05,0x05,0x0f }, { 0x2f,0x9a,0x9a,0xb5 }, + { 0x0e,0x07,0x07,0x09 }, { 0x24,0x12,0x12,0x36 }, + { 0x1b,0x80,0x80,0x9b }, { 0xdf,0xe2,0xe2,0x3d }, + { 0xcd,0xeb,0xeb,0x26 }, { 0x4e,0x27,0x27,0x69 }, + { 0x7f,0xb2,0xb2,0xcd }, { 0xea,0x75,0x75,0x9f }, + { 0x12,0x09,0x09,0x1b }, { 0x1d,0x83,0x83,0x9e }, + { 0x58,0x2c,0x2c,0x74 }, { 0x34,0x1a,0x1a,0x2e }, + { 0x36,0x1b,0x1b,0x2d }, { 0xdc,0x6e,0x6e,0xb2 }, + { 0xb4,0x5a,0x5a,0xee }, { 0x5b,0xa0,0xa0,0xfb }, + { 0xa4,0x52,0x52,0xf6 }, { 0x76,0x3b,0x3b,0x4d }, + { 0xb7,0xd6,0xd6,0x61 }, { 0x7d,0xb3,0xb3,0xce }, + { 0x52,0x29,0x29,0x7b }, { 0xdd,0xe3,0xe3,0x3e }, + { 0x5e,0x2f,0x2f,0x71 }, { 0x13,0x84,0x84,0x97 }, + { 0xa6,0x53,0x53,0xf5 }, { 0xb9,0xd1,0xd1,0x68 }, + { 0x00,0x00,0x00,0x00 }, { 0xc1,0xed,0xed,0x2c }, + { 0x40,0x20,0x20,0x60 }, { 0xe3,0xfc,0xfc,0x1f }, + { 0x79,0xb1,0xb1,0xc8 }, { 0xb6,0x5b,0x5b,0xed }, + { 0xd4,0x6a,0x6a,0xbe }, { 0x8d,0xcb,0xcb,0x46 }, + { 0x67,0xbe,0xbe,0xd9 }, { 0x72,0x39,0x39,0x4b }, + { 0x94,0x4a,0x4a,0xde }, { 0x98,0x4c,0x4c,0xd4 }, + { 0xb0,0x58,0x58,0xe8 }, { 0x85,0xcf,0xcf,0x4a }, + { 0xbb,0xd0,0xd0,0x6b }, { 0xc5,0xef,0xef,0x2a }, + { 0x4f,0xaa,0xaa,0xe5 }, { 0xed,0xfb,0xfb,0x16 }, + { 0x86,0x43,0x43,0xc5 }, { 0x9a,0x4d,0x4d,0xd7 }, + { 0x66,0x33,0x33,0x55 }, { 0x11,0x85,0x85,0x94 }, + { 0x8a,0x45,0x45,0xcf }, { 0xe9,0xf9,0xf9,0x10 }, + { 0x04,0x02,0x02,0x06 }, { 0xfe,0x7f,0x7f,0x81 }, + { 0xa0,0x50,0x50,0xf0 }, { 0x78,0x3c,0x3c,0x44 }, + { 0x25,0x9f,0x9f,0xba }, { 0x4b,0xa8,0xa8,0xe3 }, + { 0xa2,0x51,0x51,0xf3 }, { 0x5d,0xa3,0xa3,0xfe }, + { 0x80,0x40,0x40,0xc0 }, { 0x05,0x8f,0x8f,0x8a }, + { 0x3f,0x92,0x92,0xad }, { 0x21,0x9d,0x9d,0xbc }, + { 0x70,0x38,0x38,0x48 }, { 0xf1,0xf5,0xf5,0x04 }, + { 0x63,0xbc,0xbc,0xdf }, { 0x77,0xb6,0xb6,0xc1 }, + { 0xaf,0xda,0xda,0x75 }, { 0x42,0x21,0x21,0x63 }, + { 0x20,0x10,0x10,0x30 }, { 0xe5,0xff,0xff,0x1a }, + { 0xfd,0xf3,0xf3,0x0e }, { 0xbf,0xd2,0xd2,0x6d }, + { 0x81,0xcd,0xcd,0x4c }, { 0x18,0x0c,0x0c,0x14 }, + { 0x26,0x13,0x13,0x35 }, { 0xc3,0xec,0xec,0x2f }, + { 0xbe,0x5f,0x5f,0xe1 }, { 0x35,0x97,0x97,0xa2 }, + { 0x88,0x44,0x44,0xcc }, { 0x2e,0x17,0x17,0x39 }, + { 0x93,0xc4,0xc4,0x57 }, { 0x55,0xa7,0xa7,0xf2 }, + { 0xfc,0x7e,0x7e,0x82 }, { 0x7a,0x3d,0x3d,0x47 }, + { 0xc8,0x64,0x64,0xac }, { 0xba,0x5d,0x5d,0xe7 }, + { 0x32,0x19,0x19,0x2b }, { 0xe6,0x73,0x73,0x95 }, + { 0xc0,0x60,0x60,0xa0 }, { 0x19,0x81,0x81,0x98 }, + { 0x9e,0x4f,0x4f,0xd1 }, { 0xa3,0xdc,0xdc,0x7f }, + { 0x44,0x22,0x22,0x66 }, { 0x54,0x2a,0x2a,0x7e }, + { 0x3b,0x90,0x90,0xab }, { 0x0b,0x88,0x88,0x83 }, + { 0x8c,0x46,0x46,0xca }, { 0xc7,0xee,0xee,0x29 }, + { 0x6b,0xb8,0xb8,0xd3 }, { 0x28,0x14,0x14,0x3c }, + { 0xa7,0xde,0xde,0x79 }, { 0xbc,0x5e,0x5e,0xe2 }, + { 0x16,0x0b,0x0b,0x1d }, { 0xad,0xdb,0xdb,0x76 }, + { 0xdb,0xe0,0xe0,0x3b }, { 0x64,0x32,0x32,0x56 }, + { 0x74,0x3a,0x3a,0x4e }, { 0x14,0x0a,0x0a,0x1e }, + { 0x92,0x49,0x49,0xdb }, { 0x0c,0x06,0x06,0x0a }, + { 0x48,0x24,0x24,0x6c }, { 0xb8,0x5c,0x5c,0xe4 }, + { 0x9f,0xc2,0xc2,0x5d }, { 0xbd,0xd3,0xd3,0x6e }, + { 0x43,0xac,0xac,0xef }, { 0xc4,0x62,0x62,0xa6 }, + { 0x39,0x91,0x91,0xa8 }, { 0x31,0x95,0x95,0xa4 }, + { 0xd3,0xe4,0xe4,0x37 }, { 0xf2,0x79,0x79,0x8b }, + { 0xd5,0xe7,0xe7,0x32 }, { 0x8b,0xc8,0xc8,0x43 }, + { 0x6e,0x37,0x37,0x59 }, { 0xda,0x6d,0x6d,0xb7 }, + { 0x01,0x8d,0x8d,0x8c }, { 0xb1,0xd5,0xd5,0x64 }, + { 0x9c,0x4e,0x4e,0xd2 }, { 0x49,0xa9,0xa9,0xe0 }, + { 0xd8,0x6c,0x6c,0xb4 }, { 0xac,0x56,0x56,0xfa }, + { 0xf3,0xf4,0xf4,0x07 }, { 0xcf,0xea,0xea,0x25 }, + { 0xca,0x65,0x65,0xaf }, { 0xf4,0x7a,0x7a,0x8e }, + { 0x47,0xae,0xae,0xe9 }, { 0x10,0x08,0x08,0x18 }, + { 0x6f,0xba,0xba,0xd5 }, { 0xf0,0x78,0x78,0x88 }, + { 0x4a,0x25,0x25,0x6f }, { 0x5c,0x2e,0x2e,0x72 }, + { 0x38,0x1c,0x1c,0x24 }, { 0x57,0xa6,0xa6,0xf1 }, + { 0x73,0xb4,0xb4,0xc7 }, { 0x97,0xc6,0xc6,0x51 }, + { 0xcb,0xe8,0xe8,0x23 }, { 0xa1,0xdd,0xdd,0x7c }, + { 0xe8,0x74,0x74,0x9c }, { 0x3e,0x1f,0x1f,0x21 }, + { 0x96,0x4b,0x4b,0xdd }, { 0x61,0xbd,0xbd,0xdc }, + { 0x0d,0x8b,0x8b,0x86 }, { 0x0f,0x8a,0x8a,0x85 }, + { 0xe0,0x70,0x70,0x90 }, { 0x7c,0x3e,0x3e,0x42 }, + { 0x71,0xb5,0xb5,0xc4 }, { 0xcc,0x66,0x66,0xaa }, + { 0x90,0x48,0x48,0xd8 }, { 0x06,0x03,0x03,0x05 }, + { 0xf7,0xf6,0xf6,0x01 }, { 0x1c,0x0e,0x0e,0x12 }, + { 0xc2,0x61,0x61,0xa3 }, { 0x6a,0x35,0x35,0x5f }, + { 0xae,0x57,0x57,0xf9 }, { 0x69,0xb9,0xb9,0xd0 }, + { 0x17,0x86,0x86,0x91 }, { 0x99,0xc1,0xc1,0x58 }, + { 0x3a,0x1d,0x1d,0x27 }, { 0x27,0x9e,0x9e,0xb9 }, + { 0xd9,0xe1,0xe1,0x38 }, { 0xeb,0xf8,0xf8,0x13 }, + { 0x2b,0x98,0x98,0xb3 }, { 0x22,0x11,0x11,0x33 }, + { 0xd2,0x69,0x69,0xbb }, { 0xa9,0xd9,0xd9,0x70 }, + { 0x07,0x8e,0x8e,0x89 }, { 0x33,0x94,0x94,0xa7 }, + { 0x2d,0x9b,0x9b,0xb6 }, { 0x3c,0x1e,0x1e,0x22 }, + { 0x15,0x87,0x87,0x92 }, { 0xc9,0xe9,0xe9,0x20 }, + { 0x87,0xce,0xce,0x49 }, { 0xaa,0x55,0x55,0xff }, + { 0x50,0x28,0x28,0x78 }, { 0xa5,0xdf,0xdf,0x7a }, + { 0x03,0x8c,0x8c,0x8f }, { 0x59,0xa1,0xa1,0xf8 }, + { 0x09,0x89,0x89,0x80 }, { 0x1a,0x0d,0x0d,0x17 }, + { 0x65,0xbf,0xbf,0xda }, { 0xd7,0xe6,0xe6,0x31 }, + { 0x84,0x42,0x42,0xc6 }, { 0xd0,0x68,0x68,0xb8 }, + { 0x82,0x41,0x41,0xc3 }, { 0x29,0x99,0x99,0xb0 }, + { 0x5a,0x2d,0x2d,0x77 }, { 0x1e,0x0f,0x0f,0x11 }, + { 0x7b,0xb0,0xb0,0xcb }, { 0xa8,0x54,0x54,0xfc }, + { 0x6d,0xbb,0xbb,0xd6 }, { 0x2c,0x16,0x16,0x3a } +}; + +static const byte T2[256][4] = { + { 0xa5,0xc6,0x63,0x63 }, { 0x84,0xf8,0x7c,0x7c }, + { 0x99,0xee,0x77,0x77 }, { 0x8d,0xf6,0x7b,0x7b }, + { 0x0d,0xff,0xf2,0xf2 }, { 0xbd,0xd6,0x6b,0x6b }, + { 0xb1,0xde,0x6f,0x6f }, { 0x54,0x91,0xc5,0xc5 }, + { 0x50,0x60,0x30,0x30 }, { 0x03,0x02,0x01,0x01 }, + { 0xa9,0xce,0x67,0x67 }, { 0x7d,0x56,0x2b,0x2b }, + { 0x19,0xe7,0xfe,0xfe }, { 0x62,0xb5,0xd7,0xd7 }, + { 0xe6,0x4d,0xab,0xab }, { 0x9a,0xec,0x76,0x76 }, + { 0x45,0x8f,0xca,0xca }, { 0x9d,0x1f,0x82,0x82 }, + { 0x40,0x89,0xc9,0xc9 }, { 0x87,0xfa,0x7d,0x7d }, + { 0x15,0xef,0xfa,0xfa }, { 0xeb,0xb2,0x59,0x59 }, + { 0xc9,0x8e,0x47,0x47 }, { 0x0b,0xfb,0xf0,0xf0 }, + { 0xec,0x41,0xad,0xad }, { 0x67,0xb3,0xd4,0xd4 }, + { 0xfd,0x5f,0xa2,0xa2 }, { 0xea,0x45,0xaf,0xaf }, + { 0xbf,0x23,0x9c,0x9c }, { 0xf7,0x53,0xa4,0xa4 }, + { 0x96,0xe4,0x72,0x72 }, { 0x5b,0x9b,0xc0,0xc0 }, + { 0xc2,0x75,0xb7,0xb7 }, { 0x1c,0xe1,0xfd,0xfd }, + { 0xae,0x3d,0x93,0x93 }, { 0x6a,0x4c,0x26,0x26 }, + { 0x5a,0x6c,0x36,0x36 }, { 0x41,0x7e,0x3f,0x3f }, + { 0x02,0xf5,0xf7,0xf7 }, { 0x4f,0x83,0xcc,0xcc }, + { 0x5c,0x68,0x34,0x34 }, { 0xf4,0x51,0xa5,0xa5 }, + { 0x34,0xd1,0xe5,0xe5 }, { 0x08,0xf9,0xf1,0xf1 }, + { 0x93,0xe2,0x71,0x71 }, { 0x73,0xab,0xd8,0xd8 }, + { 0x53,0x62,0x31,0x31 }, { 0x3f,0x2a,0x15,0x15 }, + { 0x0c,0x08,0x04,0x04 }, { 0x52,0x95,0xc7,0xc7 }, + { 0x65,0x46,0x23,0x23 }, { 0x5e,0x9d,0xc3,0xc3 }, + { 0x28,0x30,0x18,0x18 }, { 0xa1,0x37,0x96,0x96 }, + { 0x0f,0x0a,0x05,0x05 }, { 0xb5,0x2f,0x9a,0x9a }, + { 0x09,0x0e,0x07,0x07 }, { 0x36,0x24,0x12,0x12 }, + { 0x9b,0x1b,0x80,0x80 }, { 0x3d,0xdf,0xe2,0xe2 }, + { 0x26,0xcd,0xeb,0xeb }, { 0x69,0x4e,0x27,0x27 }, + { 0xcd,0x7f,0xb2,0xb2 }, { 0x9f,0xea,0x75,0x75 }, + { 0x1b,0x12,0x09,0x09 }, { 0x9e,0x1d,0x83,0x83 }, + { 0x74,0x58,0x2c,0x2c }, { 0x2e,0x34,0x1a,0x1a }, + { 0x2d,0x36,0x1b,0x1b }, { 0xb2,0xdc,0x6e,0x6e }, + { 0xee,0xb4,0x5a,0x5a }, { 0xfb,0x5b,0xa0,0xa0 }, + { 0xf6,0xa4,0x52,0x52 }, { 0x4d,0x76,0x3b,0x3b }, + { 0x61,0xb7,0xd6,0xd6 }, { 0xce,0x7d,0xb3,0xb3 }, + { 0x7b,0x52,0x29,0x29 }, { 0x3e,0xdd,0xe3,0xe3 }, + { 0x71,0x5e,0x2f,0x2f }, { 0x97,0x13,0x84,0x84 }, + { 0xf5,0xa6,0x53,0x53 }, { 0x68,0xb9,0xd1,0xd1 }, + { 0x00,0x00,0x00,0x00 }, { 0x2c,0xc1,0xed,0xed }, + { 0x60,0x40,0x20,0x20 }, { 0x1f,0xe3,0xfc,0xfc }, + { 0xc8,0x79,0xb1,0xb1 }, { 0xed,0xb6,0x5b,0x5b }, + { 0xbe,0xd4,0x6a,0x6a }, { 0x46,0x8d,0xcb,0xcb }, + { 0xd9,0x67,0xbe,0xbe }, { 0x4b,0x72,0x39,0x39 }, + { 0xde,0x94,0x4a,0x4a }, { 0xd4,0x98,0x4c,0x4c }, + { 0xe8,0xb0,0x58,0x58 }, { 0x4a,0x85,0xcf,0xcf }, + { 0x6b,0xbb,0xd0,0xd0 }, { 0x2a,0xc5,0xef,0xef }, + { 0xe5,0x4f,0xaa,0xaa }, { 0x16,0xed,0xfb,0xfb }, + { 0xc5,0x86,0x43,0x43 }, { 0xd7,0x9a,0x4d,0x4d }, + { 0x55,0x66,0x33,0x33 }, { 0x94,0x11,0x85,0x85 }, + { 0xcf,0x8a,0x45,0x45 }, { 0x10,0xe9,0xf9,0xf9 }, + { 0x06,0x04,0x02,0x02 }, { 0x81,0xfe,0x7f,0x7f }, + { 0xf0,0xa0,0x50,0x50 }, { 0x44,0x78,0x3c,0x3c }, + { 0xba,0x25,0x9f,0x9f }, { 0xe3,0x4b,0xa8,0xa8 }, + { 0xf3,0xa2,0x51,0x51 }, { 0xfe,0x5d,0xa3,0xa3 }, + { 0xc0,0x80,0x40,0x40 }, { 0x8a,0x05,0x8f,0x8f }, + { 0xad,0x3f,0x92,0x92 }, { 0xbc,0x21,0x9d,0x9d }, + { 0x48,0x70,0x38,0x38 }, { 0x04,0xf1,0xf5,0xf5 }, + { 0xdf,0x63,0xbc,0xbc }, { 0xc1,0x77,0xb6,0xb6 }, + { 0x75,0xaf,0xda,0xda }, { 0x63,0x42,0x21,0x21 }, + { 0x30,0x20,0x10,0x10 }, { 0x1a,0xe5,0xff,0xff }, + { 0x0e,0xfd,0xf3,0xf3 }, { 0x6d,0xbf,0xd2,0xd2 }, + { 0x4c,0x81,0xcd,0xcd }, { 0x14,0x18,0x0c,0x0c }, + { 0x35,0x26,0x13,0x13 }, { 0x2f,0xc3,0xec,0xec }, + { 0xe1,0xbe,0x5f,0x5f }, { 0xa2,0x35,0x97,0x97 }, + { 0xcc,0x88,0x44,0x44 }, { 0x39,0x2e,0x17,0x17 }, + { 0x57,0x93,0xc4,0xc4 }, { 0xf2,0x55,0xa7,0xa7 }, + { 0x82,0xfc,0x7e,0x7e }, { 0x47,0x7a,0x3d,0x3d }, + { 0xac,0xc8,0x64,0x64 }, { 0xe7,0xba,0x5d,0x5d }, + { 0x2b,0x32,0x19,0x19 }, { 0x95,0xe6,0x73,0x73 }, + { 0xa0,0xc0,0x60,0x60 }, { 0x98,0x19,0x81,0x81 }, + { 0xd1,0x9e,0x4f,0x4f }, { 0x7f,0xa3,0xdc,0xdc }, + { 0x66,0x44,0x22,0x22 }, { 0x7e,0x54,0x2a,0x2a }, + { 0xab,0x3b,0x90,0x90 }, { 0x83,0x0b,0x88,0x88 }, + { 0xca,0x8c,0x46,0x46 }, { 0x29,0xc7,0xee,0xee }, + { 0xd3,0x6b,0xb8,0xb8 }, { 0x3c,0x28,0x14,0x14 }, + { 0x79,0xa7,0xde,0xde }, { 0xe2,0xbc,0x5e,0x5e }, + { 0x1d,0x16,0x0b,0x0b }, { 0x76,0xad,0xdb,0xdb }, + { 0x3b,0xdb,0xe0,0xe0 }, { 0x56,0x64,0x32,0x32 }, + { 0x4e,0x74,0x3a,0x3a }, { 0x1e,0x14,0x0a,0x0a }, + { 0xdb,0x92,0x49,0x49 }, { 0x0a,0x0c,0x06,0x06 }, + { 0x6c,0x48,0x24,0x24 }, { 0xe4,0xb8,0x5c,0x5c }, + { 0x5d,0x9f,0xc2,0xc2 }, { 0x6e,0xbd,0xd3,0xd3 }, + { 0xef,0x43,0xac,0xac }, { 0xa6,0xc4,0x62,0x62 }, + { 0xa8,0x39,0x91,0x91 }, { 0xa4,0x31,0x95,0x95 }, + { 0x37,0xd3,0xe4,0xe4 }, { 0x8b,0xf2,0x79,0x79 }, + { 0x32,0xd5,0xe7,0xe7 }, { 0x43,0x8b,0xc8,0xc8 }, + { 0x59,0x6e,0x37,0x37 }, { 0xb7,0xda,0x6d,0x6d }, + { 0x8c,0x01,0x8d,0x8d }, { 0x64,0xb1,0xd5,0xd5 }, + { 0xd2,0x9c,0x4e,0x4e }, { 0xe0,0x49,0xa9,0xa9 }, + { 0xb4,0xd8,0x6c,0x6c }, { 0xfa,0xac,0x56,0x56 }, + { 0x07,0xf3,0xf4,0xf4 }, { 0x25,0xcf,0xea,0xea }, + { 0xaf,0xca,0x65,0x65 }, { 0x8e,0xf4,0x7a,0x7a }, + { 0xe9,0x47,0xae,0xae }, { 0x18,0x10,0x08,0x08 }, + { 0xd5,0x6f,0xba,0xba }, { 0x88,0xf0,0x78,0x78 }, + { 0x6f,0x4a,0x25,0x25 }, { 0x72,0x5c,0x2e,0x2e }, + { 0x24,0x38,0x1c,0x1c }, { 0xf1,0x57,0xa6,0xa6 }, + { 0xc7,0x73,0xb4,0xb4 }, { 0x51,0x97,0xc6,0xc6 }, + { 0x23,0xcb,0xe8,0xe8 }, { 0x7c,0xa1,0xdd,0xdd }, + { 0x9c,0xe8,0x74,0x74 }, { 0x21,0x3e,0x1f,0x1f }, + { 0xdd,0x96,0x4b,0x4b }, { 0xdc,0x61,0xbd,0xbd }, + { 0x86,0x0d,0x8b,0x8b }, { 0x85,0x0f,0x8a,0x8a }, + { 0x90,0xe0,0x70,0x70 }, { 0x42,0x7c,0x3e,0x3e }, + { 0xc4,0x71,0xb5,0xb5 }, { 0xaa,0xcc,0x66,0x66 }, + { 0xd8,0x90,0x48,0x48 }, { 0x05,0x06,0x03,0x03 }, + { 0x01,0xf7,0xf6,0xf6 }, { 0x12,0x1c,0x0e,0x0e }, + { 0xa3,0xc2,0x61,0x61 }, { 0x5f,0x6a,0x35,0x35 }, + { 0xf9,0xae,0x57,0x57 }, { 0xd0,0x69,0xb9,0xb9 }, + { 0x91,0x17,0x86,0x86 }, { 0x58,0x99,0xc1,0xc1 }, + { 0x27,0x3a,0x1d,0x1d }, { 0xb9,0x27,0x9e,0x9e }, + { 0x38,0xd9,0xe1,0xe1 }, { 0x13,0xeb,0xf8,0xf8 }, + { 0xb3,0x2b,0x98,0x98 }, { 0x33,0x22,0x11,0x11 }, + { 0xbb,0xd2,0x69,0x69 }, { 0x70,0xa9,0xd9,0xd9 }, + { 0x89,0x07,0x8e,0x8e }, { 0xa7,0x33,0x94,0x94 }, + { 0xb6,0x2d,0x9b,0x9b }, { 0x22,0x3c,0x1e,0x1e }, + { 0x92,0x15,0x87,0x87 }, { 0x20,0xc9,0xe9,0xe9 }, + { 0x49,0x87,0xce,0xce }, { 0xff,0xaa,0x55,0x55 }, + { 0x78,0x50,0x28,0x28 }, { 0x7a,0xa5,0xdf,0xdf }, + { 0x8f,0x03,0x8c,0x8c }, { 0xf8,0x59,0xa1,0xa1 }, + { 0x80,0x09,0x89,0x89 }, { 0x17,0x1a,0x0d,0x0d }, + { 0xda,0x65,0xbf,0xbf }, { 0x31,0xd7,0xe6,0xe6 }, + { 0xc6,0x84,0x42,0x42 }, { 0xb8,0xd0,0x68,0x68 }, + { 0xc3,0x82,0x41,0x41 }, { 0xb0,0x29,0x99,0x99 }, + { 0x77,0x5a,0x2d,0x2d }, { 0x11,0x1e,0x0f,0x0f }, + { 0xcb,0x7b,0xb0,0xb0 }, { 0xfc,0xa8,0x54,0x54 }, + { 0xd6,0x6d,0xbb,0xbb }, { 0x3a,0x2c,0x16,0x16 } +}; + +static const byte T3[256][4] = { + { 0x63,0xa5,0xc6,0x63 }, { 0x7c,0x84,0xf8,0x7c }, + { 0x77,0x99,0xee,0x77 }, { 0x7b,0x8d,0xf6,0x7b }, + { 0xf2,0x0d,0xff,0xf2 }, { 0x6b,0xbd,0xd6,0x6b }, + { 0x6f,0xb1,0xde,0x6f }, { 0xc5,0x54,0x91,0xc5 }, + { 0x30,0x50,0x60,0x30 }, { 0x01,0x03,0x02,0x01 }, + { 0x67,0xa9,0xce,0x67 }, { 0x2b,0x7d,0x56,0x2b }, + { 0xfe,0x19,0xe7,0xfe }, { 0xd7,0x62,0xb5,0xd7 }, + { 0xab,0xe6,0x4d,0xab }, { 0x76,0x9a,0xec,0x76 }, + { 0xca,0x45,0x8f,0xca }, { 0x82,0x9d,0x1f,0x82 }, + { 0xc9,0x40,0x89,0xc9 }, { 0x7d,0x87,0xfa,0x7d }, + { 0xfa,0x15,0xef,0xfa }, { 0x59,0xeb,0xb2,0x59 }, + { 0x47,0xc9,0x8e,0x47 }, { 0xf0,0x0b,0xfb,0xf0 }, + { 0xad,0xec,0x41,0xad }, { 0xd4,0x67,0xb3,0xd4 }, + { 0xa2,0xfd,0x5f,0xa2 }, { 0xaf,0xea,0x45,0xaf }, + { 0x9c,0xbf,0x23,0x9c }, { 0xa4,0xf7,0x53,0xa4 }, + { 0x72,0x96,0xe4,0x72 }, { 0xc0,0x5b,0x9b,0xc0 }, + { 0xb7,0xc2,0x75,0xb7 }, { 0xfd,0x1c,0xe1,0xfd }, + { 0x93,0xae,0x3d,0x93 }, { 0x26,0x6a,0x4c,0x26 }, + { 0x36,0x5a,0x6c,0x36 }, { 0x3f,0x41,0x7e,0x3f }, + { 0xf7,0x02,0xf5,0xf7 }, { 0xcc,0x4f,0x83,0xcc }, + { 0x34,0x5c,0x68,0x34 }, { 0xa5,0xf4,0x51,0xa5 }, + { 0xe5,0x34,0xd1,0xe5 }, { 0xf1,0x08,0xf9,0xf1 }, + { 0x71,0x93,0xe2,0x71 }, { 0xd8,0x73,0xab,0xd8 }, + { 0x31,0x53,0x62,0x31 }, { 0x15,0x3f,0x2a,0x15 }, + { 0x04,0x0c,0x08,0x04 }, { 0xc7,0x52,0x95,0xc7 }, + { 0x23,0x65,0x46,0x23 }, { 0xc3,0x5e,0x9d,0xc3 }, + { 0x18,0x28,0x30,0x18 }, { 0x96,0xa1,0x37,0x96 }, + { 0x05,0x0f,0x0a,0x05 }, { 0x9a,0xb5,0x2f,0x9a }, + { 0x07,0x09,0x0e,0x07 }, { 0x12,0x36,0x24,0x12 }, + { 0x80,0x9b,0x1b,0x80 }, { 0xe2,0x3d,0xdf,0xe2 }, + { 0xeb,0x26,0xcd,0xeb }, { 0x27,0x69,0x4e,0x27 }, + { 0xb2,0xcd,0x7f,0xb2 }, { 0x75,0x9f,0xea,0x75 }, + { 0x09,0x1b,0x12,0x09 }, { 0x83,0x9e,0x1d,0x83 }, + { 0x2c,0x74,0x58,0x2c }, { 0x1a,0x2e,0x34,0x1a }, + { 0x1b,0x2d,0x36,0x1b }, { 0x6e,0xb2,0xdc,0x6e }, + { 0x5a,0xee,0xb4,0x5a }, { 0xa0,0xfb,0x5b,0xa0 }, + { 0x52,0xf6,0xa4,0x52 }, { 0x3b,0x4d,0x76,0x3b }, + { 0xd6,0x61,0xb7,0xd6 }, { 0xb3,0xce,0x7d,0xb3 }, + { 0x29,0x7b,0x52,0x29 }, { 0xe3,0x3e,0xdd,0xe3 }, + { 0x2f,0x71,0x5e,0x2f }, { 0x84,0x97,0x13,0x84 }, + { 0x53,0xf5,0xa6,0x53 }, { 0xd1,0x68,0xb9,0xd1 }, + { 0x00,0x00,0x00,0x00 }, { 0xed,0x2c,0xc1,0xed }, + { 0x20,0x60,0x40,0x20 }, { 0xfc,0x1f,0xe3,0xfc }, + { 0xb1,0xc8,0x79,0xb1 }, { 0x5b,0xed,0xb6,0x5b }, + { 0x6a,0xbe,0xd4,0x6a }, { 0xcb,0x46,0x8d,0xcb }, + { 0xbe,0xd9,0x67,0xbe }, { 0x39,0x4b,0x72,0x39 }, + { 0x4a,0xde,0x94,0x4a }, { 0x4c,0xd4,0x98,0x4c }, + { 0x58,0xe8,0xb0,0x58 }, { 0xcf,0x4a,0x85,0xcf }, + { 0xd0,0x6b,0xbb,0xd0 }, { 0xef,0x2a,0xc5,0xef }, + { 0xaa,0xe5,0x4f,0xaa }, { 0xfb,0x16,0xed,0xfb }, + { 0x43,0xc5,0x86,0x43 }, { 0x4d,0xd7,0x9a,0x4d }, + { 0x33,0x55,0x66,0x33 }, { 0x85,0x94,0x11,0x85 }, + { 0x45,0xcf,0x8a,0x45 }, { 0xf9,0x10,0xe9,0xf9 }, + { 0x02,0x06,0x04,0x02 }, { 0x7f,0x81,0xfe,0x7f }, + { 0x50,0xf0,0xa0,0x50 }, { 0x3c,0x44,0x78,0x3c }, + { 0x9f,0xba,0x25,0x9f }, { 0xa8,0xe3,0x4b,0xa8 }, + { 0x51,0xf3,0xa2,0x51 }, { 0xa3,0xfe,0x5d,0xa3 }, + { 0x40,0xc0,0x80,0x40 }, { 0x8f,0x8a,0x05,0x8f }, + { 0x92,0xad,0x3f,0x92 }, { 0x9d,0xbc,0x21,0x9d }, + { 0x38,0x48,0x70,0x38 }, { 0xf5,0x04,0xf1,0xf5 }, + { 0xbc,0xdf,0x63,0xbc }, { 0xb6,0xc1,0x77,0xb6 }, + { 0xda,0x75,0xaf,0xda }, { 0x21,0x63,0x42,0x21 }, + { 0x10,0x30,0x20,0x10 }, { 0xff,0x1a,0xe5,0xff }, + { 0xf3,0x0e,0xfd,0xf3 }, { 0xd2,0x6d,0xbf,0xd2 }, + { 0xcd,0x4c,0x81,0xcd }, { 0x0c,0x14,0x18,0x0c }, + { 0x13,0x35,0x26,0x13 }, { 0xec,0x2f,0xc3,0xec }, + { 0x5f,0xe1,0xbe,0x5f }, { 0x97,0xa2,0x35,0x97 }, + { 0x44,0xcc,0x88,0x44 }, { 0x17,0x39,0x2e,0x17 }, + { 0xc4,0x57,0x93,0xc4 }, { 0xa7,0xf2,0x55,0xa7 }, + { 0x7e,0x82,0xfc,0x7e }, { 0x3d,0x47,0x7a,0x3d }, + { 0x64,0xac,0xc8,0x64 }, { 0x5d,0xe7,0xba,0x5d }, + { 0x19,0x2b,0x32,0x19 }, { 0x73,0x95,0xe6,0x73 }, + { 0x60,0xa0,0xc0,0x60 }, { 0x81,0x98,0x19,0x81 }, + { 0x4f,0xd1,0x9e,0x4f }, { 0xdc,0x7f,0xa3,0xdc }, + { 0x22,0x66,0x44,0x22 }, { 0x2a,0x7e,0x54,0x2a }, + { 0x90,0xab,0x3b,0x90 }, { 0x88,0x83,0x0b,0x88 }, + { 0x46,0xca,0x8c,0x46 }, { 0xee,0x29,0xc7,0xee }, + { 0xb8,0xd3,0x6b,0xb8 }, { 0x14,0x3c,0x28,0x14 }, + { 0xde,0x79,0xa7,0xde }, { 0x5e,0xe2,0xbc,0x5e }, + { 0x0b,0x1d,0x16,0x0b }, { 0xdb,0x76,0xad,0xdb }, + { 0xe0,0x3b,0xdb,0xe0 }, { 0x32,0x56,0x64,0x32 }, + { 0x3a,0x4e,0x74,0x3a }, { 0x0a,0x1e,0x14,0x0a }, + { 0x49,0xdb,0x92,0x49 }, { 0x06,0x0a,0x0c,0x06 }, + { 0x24,0x6c,0x48,0x24 }, { 0x5c,0xe4,0xb8,0x5c }, + { 0xc2,0x5d,0x9f,0xc2 }, { 0xd3,0x6e,0xbd,0xd3 }, + { 0xac,0xef,0x43,0xac }, { 0x62,0xa6,0xc4,0x62 }, + { 0x91,0xa8,0x39,0x91 }, { 0x95,0xa4,0x31,0x95 }, + { 0xe4,0x37,0xd3,0xe4 }, { 0x79,0x8b,0xf2,0x79 }, + { 0xe7,0x32,0xd5,0xe7 }, { 0xc8,0x43,0x8b,0xc8 }, + { 0x37,0x59,0x6e,0x37 }, { 0x6d,0xb7,0xda,0x6d }, + { 0x8d,0x8c,0x01,0x8d }, { 0xd5,0x64,0xb1,0xd5 }, + { 0x4e,0xd2,0x9c,0x4e }, { 0xa9,0xe0,0x49,0xa9 }, + { 0x6c,0xb4,0xd8,0x6c }, { 0x56,0xfa,0xac,0x56 }, + { 0xf4,0x07,0xf3,0xf4 }, { 0xea,0x25,0xcf,0xea }, + { 0x65,0xaf,0xca,0x65 }, { 0x7a,0x8e,0xf4,0x7a }, + { 0xae,0xe9,0x47,0xae }, { 0x08,0x18,0x10,0x08 }, + { 0xba,0xd5,0x6f,0xba }, { 0x78,0x88,0xf0,0x78 }, + { 0x25,0x6f,0x4a,0x25 }, { 0x2e,0x72,0x5c,0x2e }, + { 0x1c,0x24,0x38,0x1c }, { 0xa6,0xf1,0x57,0xa6 }, + { 0xb4,0xc7,0x73,0xb4 }, { 0xc6,0x51,0x97,0xc6 }, + { 0xe8,0x23,0xcb,0xe8 }, { 0xdd,0x7c,0xa1,0xdd }, + { 0x74,0x9c,0xe8,0x74 }, { 0x1f,0x21,0x3e,0x1f }, + { 0x4b,0xdd,0x96,0x4b }, { 0xbd,0xdc,0x61,0xbd }, + { 0x8b,0x86,0x0d,0x8b }, { 0x8a,0x85,0x0f,0x8a }, + { 0x70,0x90,0xe0,0x70 }, { 0x3e,0x42,0x7c,0x3e }, + { 0xb5,0xc4,0x71,0xb5 }, { 0x66,0xaa,0xcc,0x66 }, + { 0x48,0xd8,0x90,0x48 }, { 0x03,0x05,0x06,0x03 }, + { 0xf6,0x01,0xf7,0xf6 }, { 0x0e,0x12,0x1c,0x0e }, + { 0x61,0xa3,0xc2,0x61 }, { 0x35,0x5f,0x6a,0x35 }, + { 0x57,0xf9,0xae,0x57 }, { 0xb9,0xd0,0x69,0xb9 }, + { 0x86,0x91,0x17,0x86 }, { 0xc1,0x58,0x99,0xc1 }, + { 0x1d,0x27,0x3a,0x1d }, { 0x9e,0xb9,0x27,0x9e }, + { 0xe1,0x38,0xd9,0xe1 }, { 0xf8,0x13,0xeb,0xf8 }, + { 0x98,0xb3,0x2b,0x98 }, { 0x11,0x33,0x22,0x11 }, + { 0x69,0xbb,0xd2,0x69 }, { 0xd9,0x70,0xa9,0xd9 }, + { 0x8e,0x89,0x07,0x8e }, { 0x94,0xa7,0x33,0x94 }, + { 0x9b,0xb6,0x2d,0x9b }, { 0x1e,0x22,0x3c,0x1e }, + { 0x87,0x92,0x15,0x87 }, { 0xe9,0x20,0xc9,0xe9 }, + { 0xce,0x49,0x87,0xce }, { 0x55,0xff,0xaa,0x55 }, + { 0x28,0x78,0x50,0x28 }, { 0xdf,0x7a,0xa5,0xdf }, + { 0x8c,0x8f,0x03,0x8c }, { 0xa1,0xf8,0x59,0xa1 }, + { 0x89,0x80,0x09,0x89 }, { 0x0d,0x17,0x1a,0x0d }, + { 0xbf,0xda,0x65,0xbf }, { 0xe6,0x31,0xd7,0xe6 }, + { 0x42,0xc6,0x84,0x42 }, { 0x68,0xb8,0xd0,0x68 }, + { 0x41,0xc3,0x82,0x41 }, { 0x99,0xb0,0x29,0x99 }, + { 0x2d,0x77,0x5a,0x2d }, { 0x0f,0x11,0x1e,0x0f }, + { 0xb0,0xcb,0x7b,0xb0 }, { 0x54,0xfc,0xa8,0x54 }, + { 0xbb,0xd6,0x6d,0xbb }, { 0x16,0x3a,0x2c,0x16 } +}; + +static const byte T4[256][4] = { + { 0x63,0x63,0xa5,0xc6 }, { 0x7c,0x7c,0x84,0xf8 }, + { 0x77,0x77,0x99,0xee }, { 0x7b,0x7b,0x8d,0xf6 }, + { 0xf2,0xf2,0x0d,0xff }, { 0x6b,0x6b,0xbd,0xd6 }, + { 0x6f,0x6f,0xb1,0xde }, { 0xc5,0xc5,0x54,0x91 }, + { 0x30,0x30,0x50,0x60 }, { 0x01,0x01,0x03,0x02 }, + { 0x67,0x67,0xa9,0xce }, { 0x2b,0x2b,0x7d,0x56 }, + { 0xfe,0xfe,0x19,0xe7 }, { 0xd7,0xd7,0x62,0xb5 }, + { 0xab,0xab,0xe6,0x4d }, { 0x76,0x76,0x9a,0xec }, + { 0xca,0xca,0x45,0x8f }, { 0x82,0x82,0x9d,0x1f }, + { 0xc9,0xc9,0x40,0x89 }, { 0x7d,0x7d,0x87,0xfa }, + { 0xfa,0xfa,0x15,0xef }, { 0x59,0x59,0xeb,0xb2 }, + { 0x47,0x47,0xc9,0x8e }, { 0xf0,0xf0,0x0b,0xfb }, + { 0xad,0xad,0xec,0x41 }, { 0xd4,0xd4,0x67,0xb3 }, + { 0xa2,0xa2,0xfd,0x5f }, { 0xaf,0xaf,0xea,0x45 }, + { 0x9c,0x9c,0xbf,0x23 }, { 0xa4,0xa4,0xf7,0x53 }, + { 0x72,0x72,0x96,0xe4 }, { 0xc0,0xc0,0x5b,0x9b }, + { 0xb7,0xb7,0xc2,0x75 }, { 0xfd,0xfd,0x1c,0xe1 }, + { 0x93,0x93,0xae,0x3d }, { 0x26,0x26,0x6a,0x4c }, + { 0x36,0x36,0x5a,0x6c }, { 0x3f,0x3f,0x41,0x7e }, + { 0xf7,0xf7,0x02,0xf5 }, { 0xcc,0xcc,0x4f,0x83 }, + { 0x34,0x34,0x5c,0x68 }, { 0xa5,0xa5,0xf4,0x51 }, + { 0xe5,0xe5,0x34,0xd1 }, { 0xf1,0xf1,0x08,0xf9 }, + { 0x71,0x71,0x93,0xe2 }, { 0xd8,0xd8,0x73,0xab }, + { 0x31,0x31,0x53,0x62 }, { 0x15,0x15,0x3f,0x2a }, + { 0x04,0x04,0x0c,0x08 }, { 0xc7,0xc7,0x52,0x95 }, + { 0x23,0x23,0x65,0x46 }, { 0xc3,0xc3,0x5e,0x9d }, + { 0x18,0x18,0x28,0x30 }, { 0x96,0x96,0xa1,0x37 }, + { 0x05,0x05,0x0f,0x0a }, { 0x9a,0x9a,0xb5,0x2f }, + { 0x07,0x07,0x09,0x0e }, { 0x12,0x12,0x36,0x24 }, + { 0x80,0x80,0x9b,0x1b }, { 0xe2,0xe2,0x3d,0xdf }, + { 0xeb,0xeb,0x26,0xcd }, { 0x27,0x27,0x69,0x4e }, + { 0xb2,0xb2,0xcd,0x7f }, { 0x75,0x75,0x9f,0xea }, + { 0x09,0x09,0x1b,0x12 }, { 0x83,0x83,0x9e,0x1d }, + { 0x2c,0x2c,0x74,0x58 }, { 0x1a,0x1a,0x2e,0x34 }, + { 0x1b,0x1b,0x2d,0x36 }, { 0x6e,0x6e,0xb2,0xdc }, + { 0x5a,0x5a,0xee,0xb4 }, { 0xa0,0xa0,0xfb,0x5b }, + { 0x52,0x52,0xf6,0xa4 }, { 0x3b,0x3b,0x4d,0x76 }, + { 0xd6,0xd6,0x61,0xb7 }, { 0xb3,0xb3,0xce,0x7d }, + { 0x29,0x29,0x7b,0x52 }, { 0xe3,0xe3,0x3e,0xdd }, + { 0x2f,0x2f,0x71,0x5e }, { 0x84,0x84,0x97,0x13 }, + { 0x53,0x53,0xf5,0xa6 }, { 0xd1,0xd1,0x68,0xb9 }, + { 0x00,0x00,0x00,0x00 }, { 0xed,0xed,0x2c,0xc1 }, + { 0x20,0x20,0x60,0x40 }, { 0xfc,0xfc,0x1f,0xe3 }, + { 0xb1,0xb1,0xc8,0x79 }, { 0x5b,0x5b,0xed,0xb6 }, + { 0x6a,0x6a,0xbe,0xd4 }, { 0xcb,0xcb,0x46,0x8d }, + { 0xbe,0xbe,0xd9,0x67 }, { 0x39,0x39,0x4b,0x72 }, + { 0x4a,0x4a,0xde,0x94 }, { 0x4c,0x4c,0xd4,0x98 }, + { 0x58,0x58,0xe8,0xb0 }, { 0xcf,0xcf,0x4a,0x85 }, + { 0xd0,0xd0,0x6b,0xbb }, { 0xef,0xef,0x2a,0xc5 }, + { 0xaa,0xaa,0xe5,0x4f }, { 0xfb,0xfb,0x16,0xed }, + { 0x43,0x43,0xc5,0x86 }, { 0x4d,0x4d,0xd7,0x9a }, + { 0x33,0x33,0x55,0x66 }, { 0x85,0x85,0x94,0x11 }, + { 0x45,0x45,0xcf,0x8a }, { 0xf9,0xf9,0x10,0xe9 }, + { 0x02,0x02,0x06,0x04 }, { 0x7f,0x7f,0x81,0xfe }, + { 0x50,0x50,0xf0,0xa0 }, { 0x3c,0x3c,0x44,0x78 }, + { 0x9f,0x9f,0xba,0x25 }, { 0xa8,0xa8,0xe3,0x4b }, + { 0x51,0x51,0xf3,0xa2 }, { 0xa3,0xa3,0xfe,0x5d }, + { 0x40,0x40,0xc0,0x80 }, { 0x8f,0x8f,0x8a,0x05 }, + { 0x92,0x92,0xad,0x3f }, { 0x9d,0x9d,0xbc,0x21 }, + { 0x38,0x38,0x48,0x70 }, { 0xf5,0xf5,0x04,0xf1 }, + { 0xbc,0xbc,0xdf,0x63 }, { 0xb6,0xb6,0xc1,0x77 }, + { 0xda,0xda,0x75,0xaf }, { 0x21,0x21,0x63,0x42 }, + { 0x10,0x10,0x30,0x20 }, { 0xff,0xff,0x1a,0xe5 }, + { 0xf3,0xf3,0x0e,0xfd }, { 0xd2,0xd2,0x6d,0xbf }, + { 0xcd,0xcd,0x4c,0x81 }, { 0x0c,0x0c,0x14,0x18 }, + { 0x13,0x13,0x35,0x26 }, { 0xec,0xec,0x2f,0xc3 }, + { 0x5f,0x5f,0xe1,0xbe }, { 0x97,0x97,0xa2,0x35 }, + { 0x44,0x44,0xcc,0x88 }, { 0x17,0x17,0x39,0x2e }, + { 0xc4,0xc4,0x57,0x93 }, { 0xa7,0xa7,0xf2,0x55 }, + { 0x7e,0x7e,0x82,0xfc }, { 0x3d,0x3d,0x47,0x7a }, + { 0x64,0x64,0xac,0xc8 }, { 0x5d,0x5d,0xe7,0xba }, + { 0x19,0x19,0x2b,0x32 }, { 0x73,0x73,0x95,0xe6 }, + { 0x60,0x60,0xa0,0xc0 }, { 0x81,0x81,0x98,0x19 }, + { 0x4f,0x4f,0xd1,0x9e }, { 0xdc,0xdc,0x7f,0xa3 }, + { 0x22,0x22,0x66,0x44 }, { 0x2a,0x2a,0x7e,0x54 }, + { 0x90,0x90,0xab,0x3b }, { 0x88,0x88,0x83,0x0b }, + { 0x46,0x46,0xca,0x8c }, { 0xee,0xee,0x29,0xc7 }, + { 0xb8,0xb8,0xd3,0x6b }, { 0x14,0x14,0x3c,0x28 }, + { 0xde,0xde,0x79,0xa7 }, { 0x5e,0x5e,0xe2,0xbc }, + { 0x0b,0x0b,0x1d,0x16 }, { 0xdb,0xdb,0x76,0xad }, + { 0xe0,0xe0,0x3b,0xdb }, { 0x32,0x32,0x56,0x64 }, + { 0x3a,0x3a,0x4e,0x74 }, { 0x0a,0x0a,0x1e,0x14 }, + { 0x49,0x49,0xdb,0x92 }, { 0x06,0x06,0x0a,0x0c }, + { 0x24,0x24,0x6c,0x48 }, { 0x5c,0x5c,0xe4,0xb8 }, + { 0xc2,0xc2,0x5d,0x9f }, { 0xd3,0xd3,0x6e,0xbd }, + { 0xac,0xac,0xef,0x43 }, { 0x62,0x62,0xa6,0xc4 }, + { 0x91,0x91,0xa8,0x39 }, { 0x95,0x95,0xa4,0x31 }, + { 0xe4,0xe4,0x37,0xd3 }, { 0x79,0x79,0x8b,0xf2 }, + { 0xe7,0xe7,0x32,0xd5 }, { 0xc8,0xc8,0x43,0x8b }, + { 0x37,0x37,0x59,0x6e }, { 0x6d,0x6d,0xb7,0xda }, + { 0x8d,0x8d,0x8c,0x01 }, { 0xd5,0xd5,0x64,0xb1 }, + { 0x4e,0x4e,0xd2,0x9c }, { 0xa9,0xa9,0xe0,0x49 }, + { 0x6c,0x6c,0xb4,0xd8 }, { 0x56,0x56,0xfa,0xac }, + { 0xf4,0xf4,0x07,0xf3 }, { 0xea,0xea,0x25,0xcf }, + { 0x65,0x65,0xaf,0xca }, { 0x7a,0x7a,0x8e,0xf4 }, + { 0xae,0xae,0xe9,0x47 }, { 0x08,0x08,0x18,0x10 }, + { 0xba,0xba,0xd5,0x6f }, { 0x78,0x78,0x88,0xf0 }, + { 0x25,0x25,0x6f,0x4a }, { 0x2e,0x2e,0x72,0x5c }, + { 0x1c,0x1c,0x24,0x38 }, { 0xa6,0xa6,0xf1,0x57 }, + { 0xb4,0xb4,0xc7,0x73 }, { 0xc6,0xc6,0x51,0x97 }, + { 0xe8,0xe8,0x23,0xcb }, { 0xdd,0xdd,0x7c,0xa1 }, + { 0x74,0x74,0x9c,0xe8 }, { 0x1f,0x1f,0x21,0x3e }, + { 0x4b,0x4b,0xdd,0x96 }, { 0xbd,0xbd,0xdc,0x61 }, + { 0x8b,0x8b,0x86,0x0d }, { 0x8a,0x8a,0x85,0x0f }, + { 0x70,0x70,0x90,0xe0 }, { 0x3e,0x3e,0x42,0x7c }, + { 0xb5,0xb5,0xc4,0x71 }, { 0x66,0x66,0xaa,0xcc }, + { 0x48,0x48,0xd8,0x90 }, { 0x03,0x03,0x05,0x06 }, + { 0xf6,0xf6,0x01,0xf7 }, { 0x0e,0x0e,0x12,0x1c }, + { 0x61,0x61,0xa3,0xc2 }, { 0x35,0x35,0x5f,0x6a }, + { 0x57,0x57,0xf9,0xae }, { 0xb9,0xb9,0xd0,0x69 }, + { 0x86,0x86,0x91,0x17 }, { 0xc1,0xc1,0x58,0x99 }, + { 0x1d,0x1d,0x27,0x3a }, { 0x9e,0x9e,0xb9,0x27 }, + { 0xe1,0xe1,0x38,0xd9 }, { 0xf8,0xf8,0x13,0xeb }, + { 0x98,0x98,0xb3,0x2b }, { 0x11,0x11,0x33,0x22 }, + { 0x69,0x69,0xbb,0xd2 }, { 0xd9,0xd9,0x70,0xa9 }, + { 0x8e,0x8e,0x89,0x07 }, { 0x94,0x94,0xa7,0x33 }, + { 0x9b,0x9b,0xb6,0x2d }, { 0x1e,0x1e,0x22,0x3c }, + { 0x87,0x87,0x92,0x15 }, { 0xe9,0xe9,0x20,0xc9 }, + { 0xce,0xce,0x49,0x87 }, { 0x55,0x55,0xff,0xaa }, + { 0x28,0x28,0x78,0x50 }, { 0xdf,0xdf,0x7a,0xa5 }, + { 0x8c,0x8c,0x8f,0x03 }, { 0xa1,0xa1,0xf8,0x59 }, + { 0x89,0x89,0x80,0x09 }, { 0x0d,0x0d,0x17,0x1a }, + { 0xbf,0xbf,0xda,0x65 }, { 0xe6,0xe6,0x31,0xd7 }, + { 0x42,0x42,0xc6,0x84 }, { 0x68,0x68,0xb8,0xd0 }, + { 0x41,0x41,0xc3,0x82 }, { 0x99,0x99,0xb0,0x29 }, + { 0x2d,0x2d,0x77,0x5a }, { 0x0f,0x0f,0x11,0x1e }, + { 0xb0,0xb0,0xcb,0x7b }, { 0x54,0x54,0xfc,0xa8 }, + { 0xbb,0xbb,0xd6,0x6d }, { 0x16,0x16,0x3a,0x2c } +}; + +static const byte T5[256][4] = { + { 0x51,0xf4,0xa7,0x50 }, { 0x7e,0x41,0x65,0x53 }, + { 0x1a,0x17,0xa4,0xc3 }, { 0x3a,0x27,0x5e,0x96 }, + { 0x3b,0xab,0x6b,0xcb }, { 0x1f,0x9d,0x45,0xf1 }, + { 0xac,0xfa,0x58,0xab }, { 0x4b,0xe3,0x03,0x93 }, + { 0x20,0x30,0xfa,0x55 }, { 0xad,0x76,0x6d,0xf6 }, + { 0x88,0xcc,0x76,0x91 }, { 0xf5,0x02,0x4c,0x25 }, + { 0x4f,0xe5,0xd7,0xfc }, { 0xc5,0x2a,0xcb,0xd7 }, + { 0x26,0x35,0x44,0x80 }, { 0xb5,0x62,0xa3,0x8f }, + { 0xde,0xb1,0x5a,0x49 }, { 0x25,0xba,0x1b,0x67 }, + { 0x45,0xea,0x0e,0x98 }, { 0x5d,0xfe,0xc0,0xe1 }, + { 0xc3,0x2f,0x75,0x02 }, { 0x81,0x4c,0xf0,0x12 }, + { 0x8d,0x46,0x97,0xa3 }, { 0x6b,0xd3,0xf9,0xc6 }, + { 0x03,0x8f,0x5f,0xe7 }, { 0x15,0x92,0x9c,0x95 }, + { 0xbf,0x6d,0x7a,0xeb }, { 0x95,0x52,0x59,0xda }, + { 0xd4,0xbe,0x83,0x2d }, { 0x58,0x74,0x21,0xd3 }, + { 0x49,0xe0,0x69,0x29 }, { 0x8e,0xc9,0xc8,0x44 }, + { 0x75,0xc2,0x89,0x6a }, { 0xf4,0x8e,0x79,0x78 }, + { 0x99,0x58,0x3e,0x6b }, { 0x27,0xb9,0x71,0xdd }, + { 0xbe,0xe1,0x4f,0xb6 }, { 0xf0,0x88,0xad,0x17 }, + { 0xc9,0x20,0xac,0x66 }, { 0x7d,0xce,0x3a,0xb4 }, + { 0x63,0xdf,0x4a,0x18 }, { 0xe5,0x1a,0x31,0x82 }, + { 0x97,0x51,0x33,0x60 }, { 0x62,0x53,0x7f,0x45 }, + { 0xb1,0x64,0x77,0xe0 }, { 0xbb,0x6b,0xae,0x84 }, + { 0xfe,0x81,0xa0,0x1c }, { 0xf9,0x08,0x2b,0x94 }, + { 0x70,0x48,0x68,0x58 }, { 0x8f,0x45,0xfd,0x19 }, + { 0x94,0xde,0x6c,0x87 }, { 0x52,0x7b,0xf8,0xb7 }, + { 0xab,0x73,0xd3,0x23 }, { 0x72,0x4b,0x02,0xe2 }, + { 0xe3,0x1f,0x8f,0x57 }, { 0x66,0x55,0xab,0x2a }, + { 0xb2,0xeb,0x28,0x07 }, { 0x2f,0xb5,0xc2,0x03 }, + { 0x86,0xc5,0x7b,0x9a }, { 0xd3,0x37,0x08,0xa5 }, + { 0x30,0x28,0x87,0xf2 }, { 0x23,0xbf,0xa5,0xb2 }, + { 0x02,0x03,0x6a,0xba }, { 0xed,0x16,0x82,0x5c }, + { 0x8a,0xcf,0x1c,0x2b }, { 0xa7,0x79,0xb4,0x92 }, + { 0xf3,0x07,0xf2,0xf0 }, { 0x4e,0x69,0xe2,0xa1 }, + { 0x65,0xda,0xf4,0xcd }, { 0x06,0x05,0xbe,0xd5 }, + { 0xd1,0x34,0x62,0x1f }, { 0xc4,0xa6,0xfe,0x8a }, + { 0x34,0x2e,0x53,0x9d }, { 0xa2,0xf3,0x55,0xa0 }, + { 0x05,0x8a,0xe1,0x32 }, { 0xa4,0xf6,0xeb,0x75 }, + { 0x0b,0x83,0xec,0x39 }, { 0x40,0x60,0xef,0xaa }, + { 0x5e,0x71,0x9f,0x06 }, { 0xbd,0x6e,0x10,0x51 }, + { 0x3e,0x21,0x8a,0xf9 }, { 0x96,0xdd,0x06,0x3d }, + { 0xdd,0x3e,0x05,0xae }, { 0x4d,0xe6,0xbd,0x46 }, + { 0x91,0x54,0x8d,0xb5 }, { 0x71,0xc4,0x5d,0x05 }, + { 0x04,0x06,0xd4,0x6f }, { 0x60,0x50,0x15,0xff }, + { 0x19,0x98,0xfb,0x24 }, { 0xd6,0xbd,0xe9,0x97 }, + { 0x89,0x40,0x43,0xcc }, { 0x67,0xd9,0x9e,0x77 }, + { 0xb0,0xe8,0x42,0xbd }, { 0x07,0x89,0x8b,0x88 }, + { 0xe7,0x19,0x5b,0x38 }, { 0x79,0xc8,0xee,0xdb }, + { 0xa1,0x7c,0x0a,0x47 }, { 0x7c,0x42,0x0f,0xe9 }, + { 0xf8,0x84,0x1e,0xc9 }, { 0x00,0x00,0x00,0x00 }, + { 0x09,0x80,0x86,0x83 }, { 0x32,0x2b,0xed,0x48 }, + { 0x1e,0x11,0x70,0xac }, { 0x6c,0x5a,0x72,0x4e }, + { 0xfd,0x0e,0xff,0xfb }, { 0x0f,0x85,0x38,0x56 }, + { 0x3d,0xae,0xd5,0x1e }, { 0x36,0x2d,0x39,0x27 }, + { 0x0a,0x0f,0xd9,0x64 }, { 0x68,0x5c,0xa6,0x21 }, + { 0x9b,0x5b,0x54,0xd1 }, { 0x24,0x36,0x2e,0x3a }, + { 0x0c,0x0a,0x67,0xb1 }, { 0x93,0x57,0xe7,0x0f }, + { 0xb4,0xee,0x96,0xd2 }, { 0x1b,0x9b,0x91,0x9e }, + { 0x80,0xc0,0xc5,0x4f }, { 0x61,0xdc,0x20,0xa2 }, + { 0x5a,0x77,0x4b,0x69 }, { 0x1c,0x12,0x1a,0x16 }, + { 0xe2,0x93,0xba,0x0a }, { 0xc0,0xa0,0x2a,0xe5 }, + { 0x3c,0x22,0xe0,0x43 }, { 0x12,0x1b,0x17,0x1d }, + { 0x0e,0x09,0x0d,0x0b }, { 0xf2,0x8b,0xc7,0xad }, + { 0x2d,0xb6,0xa8,0xb9 }, { 0x14,0x1e,0xa9,0xc8 }, + { 0x57,0xf1,0x19,0x85 }, { 0xaf,0x75,0x07,0x4c }, + { 0xee,0x99,0xdd,0xbb }, { 0xa3,0x7f,0x60,0xfd }, + { 0xf7,0x01,0x26,0x9f }, { 0x5c,0x72,0xf5,0xbc }, + { 0x44,0x66,0x3b,0xc5 }, { 0x5b,0xfb,0x7e,0x34 }, + { 0x8b,0x43,0x29,0x76 }, { 0xcb,0x23,0xc6,0xdc }, + { 0xb6,0xed,0xfc,0x68 }, { 0xb8,0xe4,0xf1,0x63 }, + { 0xd7,0x31,0xdc,0xca }, { 0x42,0x63,0x85,0x10 }, + { 0x13,0x97,0x22,0x40 }, { 0x84,0xc6,0x11,0x20 }, + { 0x85,0x4a,0x24,0x7d }, { 0xd2,0xbb,0x3d,0xf8 }, + { 0xae,0xf9,0x32,0x11 }, { 0xc7,0x29,0xa1,0x6d }, + { 0x1d,0x9e,0x2f,0x4b }, { 0xdc,0xb2,0x30,0xf3 }, + { 0x0d,0x86,0x52,0xec }, { 0x77,0xc1,0xe3,0xd0 }, + { 0x2b,0xb3,0x16,0x6c }, { 0xa9,0x70,0xb9,0x99 }, + { 0x11,0x94,0x48,0xfa }, { 0x47,0xe9,0x64,0x22 }, + { 0xa8,0xfc,0x8c,0xc4 }, { 0xa0,0xf0,0x3f,0x1a }, + { 0x56,0x7d,0x2c,0xd8 }, { 0x22,0x33,0x90,0xef }, + { 0x87,0x49,0x4e,0xc7 }, { 0xd9,0x38,0xd1,0xc1 }, + { 0x8c,0xca,0xa2,0xfe }, { 0x98,0xd4,0x0b,0x36 }, + { 0xa6,0xf5,0x81,0xcf }, { 0xa5,0x7a,0xde,0x28 }, + { 0xda,0xb7,0x8e,0x26 }, { 0x3f,0xad,0xbf,0xa4 }, + { 0x2c,0x3a,0x9d,0xe4 }, { 0x50,0x78,0x92,0x0d }, + { 0x6a,0x5f,0xcc,0x9b }, { 0x54,0x7e,0x46,0x62 }, + { 0xf6,0x8d,0x13,0xc2 }, { 0x90,0xd8,0xb8,0xe8 }, + { 0x2e,0x39,0xf7,0x5e }, { 0x82,0xc3,0xaf,0xf5 }, + { 0x9f,0x5d,0x80,0xbe }, { 0x69,0xd0,0x93,0x7c }, + { 0x6f,0xd5,0x2d,0xa9 }, { 0xcf,0x25,0x12,0xb3 }, + { 0xc8,0xac,0x99,0x3b }, { 0x10,0x18,0x7d,0xa7 }, + { 0xe8,0x9c,0x63,0x6e }, { 0xdb,0x3b,0xbb,0x7b }, + { 0xcd,0x26,0x78,0x09 }, { 0x6e,0x59,0x18,0xf4 }, + { 0xec,0x9a,0xb7,0x01 }, { 0x83,0x4f,0x9a,0xa8 }, + { 0xe6,0x95,0x6e,0x65 }, { 0xaa,0xff,0xe6,0x7e }, + { 0x21,0xbc,0xcf,0x08 }, { 0xef,0x15,0xe8,0xe6 }, + { 0xba,0xe7,0x9b,0xd9 }, { 0x4a,0x6f,0x36,0xce }, + { 0xea,0x9f,0x09,0xd4 }, { 0x29,0xb0,0x7c,0xd6 }, + { 0x31,0xa4,0xb2,0xaf }, { 0x2a,0x3f,0x23,0x31 }, + { 0xc6,0xa5,0x94,0x30 }, { 0x35,0xa2,0x66,0xc0 }, + { 0x74,0x4e,0xbc,0x37 }, { 0xfc,0x82,0xca,0xa6 }, + { 0xe0,0x90,0xd0,0xb0 }, { 0x33,0xa7,0xd8,0x15 }, + { 0xf1,0x04,0x98,0x4a }, { 0x41,0xec,0xda,0xf7 }, + { 0x7f,0xcd,0x50,0x0e }, { 0x17,0x91,0xf6,0x2f }, + { 0x76,0x4d,0xd6,0x8d }, { 0x43,0xef,0xb0,0x4d }, + { 0xcc,0xaa,0x4d,0x54 }, { 0xe4,0x96,0x04,0xdf }, + { 0x9e,0xd1,0xb5,0xe3 }, { 0x4c,0x6a,0x88,0x1b }, + { 0xc1,0x2c,0x1f,0xb8 }, { 0x46,0x65,0x51,0x7f }, + { 0x9d,0x5e,0xea,0x04 }, { 0x01,0x8c,0x35,0x5d }, + { 0xfa,0x87,0x74,0x73 }, { 0xfb,0x0b,0x41,0x2e }, + { 0xb3,0x67,0x1d,0x5a }, { 0x92,0xdb,0xd2,0x52 }, + { 0xe9,0x10,0x56,0x33 }, { 0x6d,0xd6,0x47,0x13 }, + { 0x9a,0xd7,0x61,0x8c }, { 0x37,0xa1,0x0c,0x7a }, + { 0x59,0xf8,0x14,0x8e }, { 0xeb,0x13,0x3c,0x89 }, + { 0xce,0xa9,0x27,0xee }, { 0xb7,0x61,0xc9,0x35 }, + { 0xe1,0x1c,0xe5,0xed }, { 0x7a,0x47,0xb1,0x3c }, + { 0x9c,0xd2,0xdf,0x59 }, { 0x55,0xf2,0x73,0x3f }, + { 0x18,0x14,0xce,0x79 }, { 0x73,0xc7,0x37,0xbf }, + { 0x53,0xf7,0xcd,0xea }, { 0x5f,0xfd,0xaa,0x5b }, + { 0xdf,0x3d,0x6f,0x14 }, { 0x78,0x44,0xdb,0x86 }, + { 0xca,0xaf,0xf3,0x81 }, { 0xb9,0x68,0xc4,0x3e }, + { 0x38,0x24,0x34,0x2c }, { 0xc2,0xa3,0x40,0x5f }, + { 0x16,0x1d,0xc3,0x72 }, { 0xbc,0xe2,0x25,0x0c }, + { 0x28,0x3c,0x49,0x8b }, { 0xff,0x0d,0x95,0x41 }, + { 0x39,0xa8,0x01,0x71 }, { 0x08,0x0c,0xb3,0xde }, + { 0xd8,0xb4,0xe4,0x9c }, { 0x64,0x56,0xc1,0x90 }, + { 0x7b,0xcb,0x84,0x61 }, { 0xd5,0x32,0xb6,0x70 }, + { 0x48,0x6c,0x5c,0x74 }, { 0xd0,0xb8,0x57,0x42 } +}; + +static const byte T6[256][4] = { + { 0x50,0x51,0xf4,0xa7 }, { 0x53,0x7e,0x41,0x65 }, + { 0xc3,0x1a,0x17,0xa4 }, { 0x96,0x3a,0x27,0x5e }, + { 0xcb,0x3b,0xab,0x6b }, { 0xf1,0x1f,0x9d,0x45 }, + { 0xab,0xac,0xfa,0x58 }, { 0x93,0x4b,0xe3,0x03 }, + { 0x55,0x20,0x30,0xfa }, { 0xf6,0xad,0x76,0x6d }, + { 0x91,0x88,0xcc,0x76 }, { 0x25,0xf5,0x02,0x4c }, + { 0xfc,0x4f,0xe5,0xd7 }, { 0xd7,0xc5,0x2a,0xcb }, + { 0x80,0x26,0x35,0x44 }, { 0x8f,0xb5,0x62,0xa3 }, + { 0x49,0xde,0xb1,0x5a }, { 0x67,0x25,0xba,0x1b }, + { 0x98,0x45,0xea,0x0e }, { 0xe1,0x5d,0xfe,0xc0 }, + { 0x02,0xc3,0x2f,0x75 }, { 0x12,0x81,0x4c,0xf0 }, + { 0xa3,0x8d,0x46,0x97 }, { 0xc6,0x6b,0xd3,0xf9 }, + { 0xe7,0x03,0x8f,0x5f }, { 0x95,0x15,0x92,0x9c }, + { 0xeb,0xbf,0x6d,0x7a }, { 0xda,0x95,0x52,0x59 }, + { 0x2d,0xd4,0xbe,0x83 }, { 0xd3,0x58,0x74,0x21 }, + { 0x29,0x49,0xe0,0x69 }, { 0x44,0x8e,0xc9,0xc8 }, + { 0x6a,0x75,0xc2,0x89 }, { 0x78,0xf4,0x8e,0x79 }, + { 0x6b,0x99,0x58,0x3e }, { 0xdd,0x27,0xb9,0x71 }, + { 0xb6,0xbe,0xe1,0x4f }, { 0x17,0xf0,0x88,0xad }, + { 0x66,0xc9,0x20,0xac }, { 0xb4,0x7d,0xce,0x3a }, + { 0x18,0x63,0xdf,0x4a }, { 0x82,0xe5,0x1a,0x31 }, + { 0x60,0x97,0x51,0x33 }, { 0x45,0x62,0x53,0x7f }, + { 0xe0,0xb1,0x64,0x77 }, { 0x84,0xbb,0x6b,0xae }, + { 0x1c,0xfe,0x81,0xa0 }, { 0x94,0xf9,0x08,0x2b }, + { 0x58,0x70,0x48,0x68 }, { 0x19,0x8f,0x45,0xfd }, + { 0x87,0x94,0xde,0x6c }, { 0xb7,0x52,0x7b,0xf8 }, + { 0x23,0xab,0x73,0xd3 }, { 0xe2,0x72,0x4b,0x02 }, + { 0x57,0xe3,0x1f,0x8f }, { 0x2a,0x66,0x55,0xab }, + { 0x07,0xb2,0xeb,0x28 }, { 0x03,0x2f,0xb5,0xc2 }, + { 0x9a,0x86,0xc5,0x7b }, { 0xa5,0xd3,0x37,0x08 }, + { 0xf2,0x30,0x28,0x87 }, { 0xb2,0x23,0xbf,0xa5 }, + { 0xba,0x02,0x03,0x6a }, { 0x5c,0xed,0x16,0x82 }, + { 0x2b,0x8a,0xcf,0x1c }, { 0x92,0xa7,0x79,0xb4 }, + { 0xf0,0xf3,0x07,0xf2 }, { 0xa1,0x4e,0x69,0xe2 }, + { 0xcd,0x65,0xda,0xf4 }, { 0xd5,0x06,0x05,0xbe }, + { 0x1f,0xd1,0x34,0x62 }, { 0x8a,0xc4,0xa6,0xfe }, + { 0x9d,0x34,0x2e,0x53 }, { 0xa0,0xa2,0xf3,0x55 }, + { 0x32,0x05,0x8a,0xe1 }, { 0x75,0xa4,0xf6,0xeb }, + { 0x39,0x0b,0x83,0xec }, { 0xaa,0x40,0x60,0xef }, + { 0x06,0x5e,0x71,0x9f }, { 0x51,0xbd,0x6e,0x10 }, + { 0xf9,0x3e,0x21,0x8a }, { 0x3d,0x96,0xdd,0x06 }, + { 0xae,0xdd,0x3e,0x05 }, { 0x46,0x4d,0xe6,0xbd }, + { 0xb5,0x91,0x54,0x8d }, { 0x05,0x71,0xc4,0x5d }, + { 0x6f,0x04,0x06,0xd4 }, { 0xff,0x60,0x50,0x15 }, + { 0x24,0x19,0x98,0xfb }, { 0x97,0xd6,0xbd,0xe9 }, + { 0xcc,0x89,0x40,0x43 }, { 0x77,0x67,0xd9,0x9e }, + { 0xbd,0xb0,0xe8,0x42 }, { 0x88,0x07,0x89,0x8b }, + { 0x38,0xe7,0x19,0x5b }, { 0xdb,0x79,0xc8,0xee }, + { 0x47,0xa1,0x7c,0x0a }, { 0xe9,0x7c,0x42,0x0f }, + { 0xc9,0xf8,0x84,0x1e }, { 0x00,0x00,0x00,0x00 }, + { 0x83,0x09,0x80,0x86 }, { 0x48,0x32,0x2b,0xed }, + { 0xac,0x1e,0x11,0x70 }, { 0x4e,0x6c,0x5a,0x72 }, + { 0xfb,0xfd,0x0e,0xff }, { 0x56,0x0f,0x85,0x38 }, + { 0x1e,0x3d,0xae,0xd5 }, { 0x27,0x36,0x2d,0x39 }, + { 0x64,0x0a,0x0f,0xd9 }, { 0x21,0x68,0x5c,0xa6 }, + { 0xd1,0x9b,0x5b,0x54 }, { 0x3a,0x24,0x36,0x2e }, + { 0xb1,0x0c,0x0a,0x67 }, { 0x0f,0x93,0x57,0xe7 }, + { 0xd2,0xb4,0xee,0x96 }, { 0x9e,0x1b,0x9b,0x91 }, + { 0x4f,0x80,0xc0,0xc5 }, { 0xa2,0x61,0xdc,0x20 }, + { 0x69,0x5a,0x77,0x4b }, { 0x16,0x1c,0x12,0x1a }, + { 0x0a,0xe2,0x93,0xba }, { 0xe5,0xc0,0xa0,0x2a }, + { 0x43,0x3c,0x22,0xe0 }, { 0x1d,0x12,0x1b,0x17 }, + { 0x0b,0x0e,0x09,0x0d }, { 0xad,0xf2,0x8b,0xc7 }, + { 0xb9,0x2d,0xb6,0xa8 }, { 0xc8,0x14,0x1e,0xa9 }, + { 0x85,0x57,0xf1,0x19 }, { 0x4c,0xaf,0x75,0x07 }, + { 0xbb,0xee,0x99,0xdd }, { 0xfd,0xa3,0x7f,0x60 }, + { 0x9f,0xf7,0x01,0x26 }, { 0xbc,0x5c,0x72,0xf5 }, + { 0xc5,0x44,0x66,0x3b }, { 0x34,0x5b,0xfb,0x7e }, + { 0x76,0x8b,0x43,0x29 }, { 0xdc,0xcb,0x23,0xc6 }, + { 0x68,0xb6,0xed,0xfc }, { 0x63,0xb8,0xe4,0xf1 }, + { 0xca,0xd7,0x31,0xdc }, { 0x10,0x42,0x63,0x85 }, + { 0x40,0x13,0x97,0x22 }, { 0x20,0x84,0xc6,0x11 }, + { 0x7d,0x85,0x4a,0x24 }, { 0xf8,0xd2,0xbb,0x3d }, + { 0x11,0xae,0xf9,0x32 }, { 0x6d,0xc7,0x29,0xa1 }, + { 0x4b,0x1d,0x9e,0x2f }, { 0xf3,0xdc,0xb2,0x30 }, + { 0xec,0x0d,0x86,0x52 }, { 0xd0,0x77,0xc1,0xe3 }, + { 0x6c,0x2b,0xb3,0x16 }, { 0x99,0xa9,0x70,0xb9 }, + { 0xfa,0x11,0x94,0x48 }, { 0x22,0x47,0xe9,0x64 }, + { 0xc4,0xa8,0xfc,0x8c }, { 0x1a,0xa0,0xf0,0x3f }, + { 0xd8,0x56,0x7d,0x2c }, { 0xef,0x22,0x33,0x90 }, + { 0xc7,0x87,0x49,0x4e }, { 0xc1,0xd9,0x38,0xd1 }, + { 0xfe,0x8c,0xca,0xa2 }, { 0x36,0x98,0xd4,0x0b }, + { 0xcf,0xa6,0xf5,0x81 }, { 0x28,0xa5,0x7a,0xde }, + { 0x26,0xda,0xb7,0x8e }, { 0xa4,0x3f,0xad,0xbf }, + { 0xe4,0x2c,0x3a,0x9d }, { 0x0d,0x50,0x78,0x92 }, + { 0x9b,0x6a,0x5f,0xcc }, { 0x62,0x54,0x7e,0x46 }, + { 0xc2,0xf6,0x8d,0x13 }, { 0xe8,0x90,0xd8,0xb8 }, + { 0x5e,0x2e,0x39,0xf7 }, { 0xf5,0x82,0xc3,0xaf }, + { 0xbe,0x9f,0x5d,0x80 }, { 0x7c,0x69,0xd0,0x93 }, + { 0xa9,0x6f,0xd5,0x2d }, { 0xb3,0xcf,0x25,0x12 }, + { 0x3b,0xc8,0xac,0x99 }, { 0xa7,0x10,0x18,0x7d }, + { 0x6e,0xe8,0x9c,0x63 }, { 0x7b,0xdb,0x3b,0xbb }, + { 0x09,0xcd,0x26,0x78 }, { 0xf4,0x6e,0x59,0x18 }, + { 0x01,0xec,0x9a,0xb7 }, { 0xa8,0x83,0x4f,0x9a }, + { 0x65,0xe6,0x95,0x6e }, { 0x7e,0xaa,0xff,0xe6 }, + { 0x08,0x21,0xbc,0xcf }, { 0xe6,0xef,0x15,0xe8 }, + { 0xd9,0xba,0xe7,0x9b }, { 0xce,0x4a,0x6f,0x36 }, + { 0xd4,0xea,0x9f,0x09 }, { 0xd6,0x29,0xb0,0x7c }, + { 0xaf,0x31,0xa4,0xb2 }, { 0x31,0x2a,0x3f,0x23 }, + { 0x30,0xc6,0xa5,0x94 }, { 0xc0,0x35,0xa2,0x66 }, + { 0x37,0x74,0x4e,0xbc }, { 0xa6,0xfc,0x82,0xca }, + { 0xb0,0xe0,0x90,0xd0 }, { 0x15,0x33,0xa7,0xd8 }, + { 0x4a,0xf1,0x04,0x98 }, { 0xf7,0x41,0xec,0xda }, + { 0x0e,0x7f,0xcd,0x50 }, { 0x2f,0x17,0x91,0xf6 }, + { 0x8d,0x76,0x4d,0xd6 }, { 0x4d,0x43,0xef,0xb0 }, + { 0x54,0xcc,0xaa,0x4d }, { 0xdf,0xe4,0x96,0x04 }, + { 0xe3,0x9e,0xd1,0xb5 }, { 0x1b,0x4c,0x6a,0x88 }, + { 0xb8,0xc1,0x2c,0x1f }, { 0x7f,0x46,0x65,0x51 }, + { 0x04,0x9d,0x5e,0xea }, { 0x5d,0x01,0x8c,0x35 }, + { 0x73,0xfa,0x87,0x74 }, { 0x2e,0xfb,0x0b,0x41 }, + { 0x5a,0xb3,0x67,0x1d }, { 0x52,0x92,0xdb,0xd2 }, + { 0x33,0xe9,0x10,0x56 }, { 0x13,0x6d,0xd6,0x47 }, + { 0x8c,0x9a,0xd7,0x61 }, { 0x7a,0x37,0xa1,0x0c }, + { 0x8e,0x59,0xf8,0x14 }, { 0x89,0xeb,0x13,0x3c }, + { 0xee,0xce,0xa9,0x27 }, { 0x35,0xb7,0x61,0xc9 }, + { 0xed,0xe1,0x1c,0xe5 }, { 0x3c,0x7a,0x47,0xb1 }, + { 0x59,0x9c,0xd2,0xdf }, { 0x3f,0x55,0xf2,0x73 }, + { 0x79,0x18,0x14,0xce }, { 0xbf,0x73,0xc7,0x37 }, + { 0xea,0x53,0xf7,0xcd }, { 0x5b,0x5f,0xfd,0xaa }, + { 0x14,0xdf,0x3d,0x6f }, { 0x86,0x78,0x44,0xdb }, + { 0x81,0xca,0xaf,0xf3 }, { 0x3e,0xb9,0x68,0xc4 }, + { 0x2c,0x38,0x24,0x34 }, { 0x5f,0xc2,0xa3,0x40 }, + { 0x72,0x16,0x1d,0xc3 }, { 0x0c,0xbc,0xe2,0x25 }, + { 0x8b,0x28,0x3c,0x49 }, { 0x41,0xff,0x0d,0x95 }, + { 0x71,0x39,0xa8,0x01 }, { 0xde,0x08,0x0c,0xb3 }, + { 0x9c,0xd8,0xb4,0xe4 }, { 0x90,0x64,0x56,0xc1 }, + { 0x61,0x7b,0xcb,0x84 }, { 0x70,0xd5,0x32,0xb6 }, + { 0x74,0x48,0x6c,0x5c }, { 0x42,0xd0,0xb8,0x57 } +}; + +static const byte T7[256][4] = { + { 0xa7,0x50,0x51,0xf4 }, { 0x65,0x53,0x7e,0x41 }, + { 0xa4,0xc3,0x1a,0x17 }, { 0x5e,0x96,0x3a,0x27 }, + { 0x6b,0xcb,0x3b,0xab }, { 0x45,0xf1,0x1f,0x9d }, + { 0x58,0xab,0xac,0xfa }, { 0x03,0x93,0x4b,0xe3 }, + { 0xfa,0x55,0x20,0x30 }, { 0x6d,0xf6,0xad,0x76 }, + { 0x76,0x91,0x88,0xcc }, { 0x4c,0x25,0xf5,0x02 }, + { 0xd7,0xfc,0x4f,0xe5 }, { 0xcb,0xd7,0xc5,0x2a }, + { 0x44,0x80,0x26,0x35 }, { 0xa3,0x8f,0xb5,0x62 }, + { 0x5a,0x49,0xde,0xb1 }, { 0x1b,0x67,0x25,0xba }, + { 0x0e,0x98,0x45,0xea }, { 0xc0,0xe1,0x5d,0xfe }, + { 0x75,0x02,0xc3,0x2f }, { 0xf0,0x12,0x81,0x4c }, + { 0x97,0xa3,0x8d,0x46 }, { 0xf9,0xc6,0x6b,0xd3 }, + { 0x5f,0xe7,0x03,0x8f }, { 0x9c,0x95,0x15,0x92 }, + { 0x7a,0xeb,0xbf,0x6d }, { 0x59,0xda,0x95,0x52 }, + { 0x83,0x2d,0xd4,0xbe }, { 0x21,0xd3,0x58,0x74 }, + { 0x69,0x29,0x49,0xe0 }, { 0xc8,0x44,0x8e,0xc9 }, + { 0x89,0x6a,0x75,0xc2 }, { 0x79,0x78,0xf4,0x8e }, + { 0x3e,0x6b,0x99,0x58 }, { 0x71,0xdd,0x27,0xb9 }, + { 0x4f,0xb6,0xbe,0xe1 }, { 0xad,0x17,0xf0,0x88 }, + { 0xac,0x66,0xc9,0x20 }, { 0x3a,0xb4,0x7d,0xce }, + { 0x4a,0x18,0x63,0xdf }, { 0x31,0x82,0xe5,0x1a }, + { 0x33,0x60,0x97,0x51 }, { 0x7f,0x45,0x62,0x53 }, + { 0x77,0xe0,0xb1,0x64 }, { 0xae,0x84,0xbb,0x6b }, + { 0xa0,0x1c,0xfe,0x81 }, { 0x2b,0x94,0xf9,0x08 }, + { 0x68,0x58,0x70,0x48 }, { 0xfd,0x19,0x8f,0x45 }, + { 0x6c,0x87,0x94,0xde }, { 0xf8,0xb7,0x52,0x7b }, + { 0xd3,0x23,0xab,0x73 }, { 0x02,0xe2,0x72,0x4b }, + { 0x8f,0x57,0xe3,0x1f }, { 0xab,0x2a,0x66,0x55 }, + { 0x28,0x07,0xb2,0xeb }, { 0xc2,0x03,0x2f,0xb5 }, + { 0x7b,0x9a,0x86,0xc5 }, { 0x08,0xa5,0xd3,0x37 }, + { 0x87,0xf2,0x30,0x28 }, { 0xa5,0xb2,0x23,0xbf }, + { 0x6a,0xba,0x02,0x03 }, { 0x82,0x5c,0xed,0x16 }, + { 0x1c,0x2b,0x8a,0xcf }, { 0xb4,0x92,0xa7,0x79 }, + { 0xf2,0xf0,0xf3,0x07 }, { 0xe2,0xa1,0x4e,0x69 }, + { 0xf4,0xcd,0x65,0xda }, { 0xbe,0xd5,0x06,0x05 }, + { 0x62,0x1f,0xd1,0x34 }, { 0xfe,0x8a,0xc4,0xa6 }, + { 0x53,0x9d,0x34,0x2e }, { 0x55,0xa0,0xa2,0xf3 }, + { 0xe1,0x32,0x05,0x8a }, { 0xeb,0x75,0xa4,0xf6 }, + { 0xec,0x39,0x0b,0x83 }, { 0xef,0xaa,0x40,0x60 }, + { 0x9f,0x06,0x5e,0x71 }, { 0x10,0x51,0xbd,0x6e }, + { 0x8a,0xf9,0x3e,0x21 }, { 0x06,0x3d,0x96,0xdd }, + { 0x05,0xae,0xdd,0x3e }, { 0xbd,0x46,0x4d,0xe6 }, + { 0x8d,0xb5,0x91,0x54 }, { 0x5d,0x05,0x71,0xc4 }, + { 0xd4,0x6f,0x04,0x06 }, { 0x15,0xff,0x60,0x50 }, + { 0xfb,0x24,0x19,0x98 }, { 0xe9,0x97,0xd6,0xbd }, + { 0x43,0xcc,0x89,0x40 }, { 0x9e,0x77,0x67,0xd9 }, + { 0x42,0xbd,0xb0,0xe8 }, { 0x8b,0x88,0x07,0x89 }, + { 0x5b,0x38,0xe7,0x19 }, { 0xee,0xdb,0x79,0xc8 }, + { 0x0a,0x47,0xa1,0x7c }, { 0x0f,0xe9,0x7c,0x42 }, + { 0x1e,0xc9,0xf8,0x84 }, { 0x00,0x00,0x00,0x00 }, + { 0x86,0x83,0x09,0x80 }, { 0xed,0x48,0x32,0x2b }, + { 0x70,0xac,0x1e,0x11 }, { 0x72,0x4e,0x6c,0x5a }, + { 0xff,0xfb,0xfd,0x0e }, { 0x38,0x56,0x0f,0x85 }, + { 0xd5,0x1e,0x3d,0xae }, { 0x39,0x27,0x36,0x2d }, + { 0xd9,0x64,0x0a,0x0f }, { 0xa6,0x21,0x68,0x5c }, + { 0x54,0xd1,0x9b,0x5b }, { 0x2e,0x3a,0x24,0x36 }, + { 0x67,0xb1,0x0c,0x0a }, { 0xe7,0x0f,0x93,0x57 }, + { 0x96,0xd2,0xb4,0xee }, { 0x91,0x9e,0x1b,0x9b }, + { 0xc5,0x4f,0x80,0xc0 }, { 0x20,0xa2,0x61,0xdc }, + { 0x4b,0x69,0x5a,0x77 }, { 0x1a,0x16,0x1c,0x12 }, + { 0xba,0x0a,0xe2,0x93 }, { 0x2a,0xe5,0xc0,0xa0 }, + { 0xe0,0x43,0x3c,0x22 }, { 0x17,0x1d,0x12,0x1b }, + { 0x0d,0x0b,0x0e,0x09 }, { 0xc7,0xad,0xf2,0x8b }, + { 0xa8,0xb9,0x2d,0xb6 }, { 0xa9,0xc8,0x14,0x1e }, + { 0x19,0x85,0x57,0xf1 }, { 0x07,0x4c,0xaf,0x75 }, + { 0xdd,0xbb,0xee,0x99 }, { 0x60,0xfd,0xa3,0x7f }, + { 0x26,0x9f,0xf7,0x01 }, { 0xf5,0xbc,0x5c,0x72 }, + { 0x3b,0xc5,0x44,0x66 }, { 0x7e,0x34,0x5b,0xfb }, + { 0x29,0x76,0x8b,0x43 }, { 0xc6,0xdc,0xcb,0x23 }, + { 0xfc,0x68,0xb6,0xed }, { 0xf1,0x63,0xb8,0xe4 }, + { 0xdc,0xca,0xd7,0x31 }, { 0x85,0x10,0x42,0x63 }, + { 0x22,0x40,0x13,0x97 }, { 0x11,0x20,0x84,0xc6 }, + { 0x24,0x7d,0x85,0x4a }, { 0x3d,0xf8,0xd2,0xbb }, + { 0x32,0x11,0xae,0xf9 }, { 0xa1,0x6d,0xc7,0x29 }, + { 0x2f,0x4b,0x1d,0x9e }, { 0x30,0xf3,0xdc,0xb2 }, + { 0x52,0xec,0x0d,0x86 }, { 0xe3,0xd0,0x77,0xc1 }, + { 0x16,0x6c,0x2b,0xb3 }, { 0xb9,0x99,0xa9,0x70 }, + { 0x48,0xfa,0x11,0x94 }, { 0x64,0x22,0x47,0xe9 }, + { 0x8c,0xc4,0xa8,0xfc }, { 0x3f,0x1a,0xa0,0xf0 }, + { 0x2c,0xd8,0x56,0x7d }, { 0x90,0xef,0x22,0x33 }, + { 0x4e,0xc7,0x87,0x49 }, { 0xd1,0xc1,0xd9,0x38 }, + { 0xa2,0xfe,0x8c,0xca }, { 0x0b,0x36,0x98,0xd4 }, + { 0x81,0xcf,0xa6,0xf5 }, { 0xde,0x28,0xa5,0x7a }, + { 0x8e,0x26,0xda,0xb7 }, { 0xbf,0xa4,0x3f,0xad }, + { 0x9d,0xe4,0x2c,0x3a }, { 0x92,0x0d,0x50,0x78 }, + { 0xcc,0x9b,0x6a,0x5f }, { 0x46,0x62,0x54,0x7e }, + { 0x13,0xc2,0xf6,0x8d }, { 0xb8,0xe8,0x90,0xd8 }, + { 0xf7,0x5e,0x2e,0x39 }, { 0xaf,0xf5,0x82,0xc3 }, + { 0x80,0xbe,0x9f,0x5d }, { 0x93,0x7c,0x69,0xd0 }, + { 0x2d,0xa9,0x6f,0xd5 }, { 0x12,0xb3,0xcf,0x25 }, + { 0x99,0x3b,0xc8,0xac }, { 0x7d,0xa7,0x10,0x18 }, + { 0x63,0x6e,0xe8,0x9c }, { 0xbb,0x7b,0xdb,0x3b }, + { 0x78,0x09,0xcd,0x26 }, { 0x18,0xf4,0x6e,0x59 }, + { 0xb7,0x01,0xec,0x9a }, { 0x9a,0xa8,0x83,0x4f }, + { 0x6e,0x65,0xe6,0x95 }, { 0xe6,0x7e,0xaa,0xff }, + { 0xcf,0x08,0x21,0xbc }, { 0xe8,0xe6,0xef,0x15 }, + { 0x9b,0xd9,0xba,0xe7 }, { 0x36,0xce,0x4a,0x6f }, + { 0x09,0xd4,0xea,0x9f }, { 0x7c,0xd6,0x29,0xb0 }, + { 0xb2,0xaf,0x31,0xa4 }, { 0x23,0x31,0x2a,0x3f }, + { 0x94,0x30,0xc6,0xa5 }, { 0x66,0xc0,0x35,0xa2 }, + { 0xbc,0x37,0x74,0x4e }, { 0xca,0xa6,0xfc,0x82 }, + { 0xd0,0xb0,0xe0,0x90 }, { 0xd8,0x15,0x33,0xa7 }, + { 0x98,0x4a,0xf1,0x04 }, { 0xda,0xf7,0x41,0xec }, + { 0x50,0x0e,0x7f,0xcd }, { 0xf6,0x2f,0x17,0x91 }, + { 0xd6,0x8d,0x76,0x4d }, { 0xb0,0x4d,0x43,0xef }, + { 0x4d,0x54,0xcc,0xaa }, { 0x04,0xdf,0xe4,0x96 }, + { 0xb5,0xe3,0x9e,0xd1 }, { 0x88,0x1b,0x4c,0x6a }, + { 0x1f,0xb8,0xc1,0x2c }, { 0x51,0x7f,0x46,0x65 }, + { 0xea,0x04,0x9d,0x5e }, { 0x35,0x5d,0x01,0x8c }, + { 0x74,0x73,0xfa,0x87 }, { 0x41,0x2e,0xfb,0x0b }, + { 0x1d,0x5a,0xb3,0x67 }, { 0xd2,0x52,0x92,0xdb }, + { 0x56,0x33,0xe9,0x10 }, { 0x47,0x13,0x6d,0xd6 }, + { 0x61,0x8c,0x9a,0xd7 }, { 0x0c,0x7a,0x37,0xa1 }, + { 0x14,0x8e,0x59,0xf8 }, { 0x3c,0x89,0xeb,0x13 }, + { 0x27,0xee,0xce,0xa9 }, { 0xc9,0x35,0xb7,0x61 }, + { 0xe5,0xed,0xe1,0x1c }, { 0xb1,0x3c,0x7a,0x47 }, + { 0xdf,0x59,0x9c,0xd2 }, { 0x73,0x3f,0x55,0xf2 }, + { 0xce,0x79,0x18,0x14 }, { 0x37,0xbf,0x73,0xc7 }, + { 0xcd,0xea,0x53,0xf7 }, { 0xaa,0x5b,0x5f,0xfd }, + { 0x6f,0x14,0xdf,0x3d }, { 0xdb,0x86,0x78,0x44 }, + { 0xf3,0x81,0xca,0xaf }, { 0xc4,0x3e,0xb9,0x68 }, + { 0x34,0x2c,0x38,0x24 }, { 0x40,0x5f,0xc2,0xa3 }, + { 0xc3,0x72,0x16,0x1d }, { 0x25,0x0c,0xbc,0xe2 }, + { 0x49,0x8b,0x28,0x3c }, { 0x95,0x41,0xff,0x0d }, + { 0x01,0x71,0x39,0xa8 }, { 0xb3,0xde,0x08,0x0c }, + { 0xe4,0x9c,0xd8,0xb4 }, { 0xc1,0x90,0x64,0x56 }, + { 0x84,0x61,0x7b,0xcb }, { 0xb6,0x70,0xd5,0x32 }, + { 0x5c,0x74,0x48,0x6c }, { 0x57,0x42,0xd0,0xb8 } +}; + +static const byte T8[256][4] = { + { 0xf4,0xa7,0x50,0x51 }, { 0x41,0x65,0x53,0x7e }, + { 0x17,0xa4,0xc3,0x1a }, { 0x27,0x5e,0x96,0x3a }, + { 0xab,0x6b,0xcb,0x3b }, { 0x9d,0x45,0xf1,0x1f }, + { 0xfa,0x58,0xab,0xac }, { 0xe3,0x03,0x93,0x4b }, + { 0x30,0xfa,0x55,0x20 }, { 0x76,0x6d,0xf6,0xad }, + { 0xcc,0x76,0x91,0x88 }, { 0x02,0x4c,0x25,0xf5 }, + { 0xe5,0xd7,0xfc,0x4f }, { 0x2a,0xcb,0xd7,0xc5 }, + { 0x35,0x44,0x80,0x26 }, { 0x62,0xa3,0x8f,0xb5 }, + { 0xb1,0x5a,0x49,0xde }, { 0xba,0x1b,0x67,0x25 }, + { 0xea,0x0e,0x98,0x45 }, { 0xfe,0xc0,0xe1,0x5d }, + { 0x2f,0x75,0x02,0xc3 }, { 0x4c,0xf0,0x12,0x81 }, + { 0x46,0x97,0xa3,0x8d }, { 0xd3,0xf9,0xc6,0x6b }, + { 0x8f,0x5f,0xe7,0x03 }, { 0x92,0x9c,0x95,0x15 }, + { 0x6d,0x7a,0xeb,0xbf }, { 0x52,0x59,0xda,0x95 }, + { 0xbe,0x83,0x2d,0xd4 }, { 0x74,0x21,0xd3,0x58 }, + { 0xe0,0x69,0x29,0x49 }, { 0xc9,0xc8,0x44,0x8e }, + { 0xc2,0x89,0x6a,0x75 }, { 0x8e,0x79,0x78,0xf4 }, + { 0x58,0x3e,0x6b,0x99 }, { 0xb9,0x71,0xdd,0x27 }, + { 0xe1,0x4f,0xb6,0xbe }, { 0x88,0xad,0x17,0xf0 }, + { 0x20,0xac,0x66,0xc9 }, { 0xce,0x3a,0xb4,0x7d }, + { 0xdf,0x4a,0x18,0x63 }, { 0x1a,0x31,0x82,0xe5 }, + { 0x51,0x33,0x60,0x97 }, { 0x53,0x7f,0x45,0x62 }, + { 0x64,0x77,0xe0,0xb1 }, { 0x6b,0xae,0x84,0xbb }, + { 0x81,0xa0,0x1c,0xfe }, { 0x08,0x2b,0x94,0xf9 }, + { 0x48,0x68,0x58,0x70 }, { 0x45,0xfd,0x19,0x8f }, + { 0xde,0x6c,0x87,0x94 }, { 0x7b,0xf8,0xb7,0x52 }, + { 0x73,0xd3,0x23,0xab }, { 0x4b,0x02,0xe2,0x72 }, + { 0x1f,0x8f,0x57,0xe3 }, { 0x55,0xab,0x2a,0x66 }, + { 0xeb,0x28,0x07,0xb2 }, { 0xb5,0xc2,0x03,0x2f }, + { 0xc5,0x7b,0x9a,0x86 }, { 0x37,0x08,0xa5,0xd3 }, + { 0x28,0x87,0xf2,0x30 }, { 0xbf,0xa5,0xb2,0x23 }, + { 0x03,0x6a,0xba,0x02 }, { 0x16,0x82,0x5c,0xed }, + { 0xcf,0x1c,0x2b,0x8a }, { 0x79,0xb4,0x92,0xa7 }, + { 0x07,0xf2,0xf0,0xf3 }, { 0x69,0xe2,0xa1,0x4e }, + { 0xda,0xf4,0xcd,0x65 }, { 0x05,0xbe,0xd5,0x06 }, + { 0x34,0x62,0x1f,0xd1 }, { 0xa6,0xfe,0x8a,0xc4 }, + { 0x2e,0x53,0x9d,0x34 }, { 0xf3,0x55,0xa0,0xa2 }, + { 0x8a,0xe1,0x32,0x05 }, { 0xf6,0xeb,0x75,0xa4 }, + { 0x83,0xec,0x39,0x0b }, { 0x60,0xef,0xaa,0x40 }, + { 0x71,0x9f,0x06,0x5e }, { 0x6e,0x10,0x51,0xbd }, + { 0x21,0x8a,0xf9,0x3e }, { 0xdd,0x06,0x3d,0x96 }, + { 0x3e,0x05,0xae,0xdd }, { 0xe6,0xbd,0x46,0x4d }, + { 0x54,0x8d,0xb5,0x91 }, { 0xc4,0x5d,0x05,0x71 }, + { 0x06,0xd4,0x6f,0x04 }, { 0x50,0x15,0xff,0x60 }, + { 0x98,0xfb,0x24,0x19 }, { 0xbd,0xe9,0x97,0xd6 }, + { 0x40,0x43,0xcc,0x89 }, { 0xd9,0x9e,0x77,0x67 }, + { 0xe8,0x42,0xbd,0xb0 }, { 0x89,0x8b,0x88,0x07 }, + { 0x19,0x5b,0x38,0xe7 }, { 0xc8,0xee,0xdb,0x79 }, + { 0x7c,0x0a,0x47,0xa1 }, { 0x42,0x0f,0xe9,0x7c }, + { 0x84,0x1e,0xc9,0xf8 }, { 0x00,0x00,0x00,0x00 }, + { 0x80,0x86,0x83,0x09 }, { 0x2b,0xed,0x48,0x32 }, + { 0x11,0x70,0xac,0x1e }, { 0x5a,0x72,0x4e,0x6c }, + { 0x0e,0xff,0xfb,0xfd }, { 0x85,0x38,0x56,0x0f }, + { 0xae,0xd5,0x1e,0x3d }, { 0x2d,0x39,0x27,0x36 }, + { 0x0f,0xd9,0x64,0x0a }, { 0x5c,0xa6,0x21,0x68 }, + { 0x5b,0x54,0xd1,0x9b }, { 0x36,0x2e,0x3a,0x24 }, + { 0x0a,0x67,0xb1,0x0c }, { 0x57,0xe7,0x0f,0x93 }, + { 0xee,0x96,0xd2,0xb4 }, { 0x9b,0x91,0x9e,0x1b }, + { 0xc0,0xc5,0x4f,0x80 }, { 0xdc,0x20,0xa2,0x61 }, + { 0x77,0x4b,0x69,0x5a }, { 0x12,0x1a,0x16,0x1c }, + { 0x93,0xba,0x0a,0xe2 }, { 0xa0,0x2a,0xe5,0xc0 }, + { 0x22,0xe0,0x43,0x3c }, { 0x1b,0x17,0x1d,0x12 }, + { 0x09,0x0d,0x0b,0x0e }, { 0x8b,0xc7,0xad,0xf2 }, + { 0xb6,0xa8,0xb9,0x2d }, { 0x1e,0xa9,0xc8,0x14 }, + { 0xf1,0x19,0x85,0x57 }, { 0x75,0x07,0x4c,0xaf }, + { 0x99,0xdd,0xbb,0xee }, { 0x7f,0x60,0xfd,0xa3 }, + { 0x01,0x26,0x9f,0xf7 }, { 0x72,0xf5,0xbc,0x5c }, + { 0x66,0x3b,0xc5,0x44 }, { 0xfb,0x7e,0x34,0x5b }, + { 0x43,0x29,0x76,0x8b }, { 0x23,0xc6,0xdc,0xcb }, + { 0xed,0xfc,0x68,0xb6 }, { 0xe4,0xf1,0x63,0xb8 }, + { 0x31,0xdc,0xca,0xd7 }, { 0x63,0x85,0x10,0x42 }, + { 0x97,0x22,0x40,0x13 }, { 0xc6,0x11,0x20,0x84 }, + { 0x4a,0x24,0x7d,0x85 }, { 0xbb,0x3d,0xf8,0xd2 }, + { 0xf9,0x32,0x11,0xae }, { 0x29,0xa1,0x6d,0xc7 }, + { 0x9e,0x2f,0x4b,0x1d }, { 0xb2,0x30,0xf3,0xdc }, + { 0x86,0x52,0xec,0x0d }, { 0xc1,0xe3,0xd0,0x77 }, + { 0xb3,0x16,0x6c,0x2b }, { 0x70,0xb9,0x99,0xa9 }, + { 0x94,0x48,0xfa,0x11 }, { 0xe9,0x64,0x22,0x47 }, + { 0xfc,0x8c,0xc4,0xa8 }, { 0xf0,0x3f,0x1a,0xa0 }, + { 0x7d,0x2c,0xd8,0x56 }, { 0x33,0x90,0xef,0x22 }, + { 0x49,0x4e,0xc7,0x87 }, { 0x38,0xd1,0xc1,0xd9 }, + { 0xca,0xa2,0xfe,0x8c }, { 0xd4,0x0b,0x36,0x98 }, + { 0xf5,0x81,0xcf,0xa6 }, { 0x7a,0xde,0x28,0xa5 }, + { 0xb7,0x8e,0x26,0xda }, { 0xad,0xbf,0xa4,0x3f }, + { 0x3a,0x9d,0xe4,0x2c }, { 0x78,0x92,0x0d,0x50 }, + { 0x5f,0xcc,0x9b,0x6a }, { 0x7e,0x46,0x62,0x54 }, + { 0x8d,0x13,0xc2,0xf6 }, { 0xd8,0xb8,0xe8,0x90 }, + { 0x39,0xf7,0x5e,0x2e }, { 0xc3,0xaf,0xf5,0x82 }, + { 0x5d,0x80,0xbe,0x9f }, { 0xd0,0x93,0x7c,0x69 }, + { 0xd5,0x2d,0xa9,0x6f }, { 0x25,0x12,0xb3,0xcf }, + { 0xac,0x99,0x3b,0xc8 }, { 0x18,0x7d,0xa7,0x10 }, + { 0x9c,0x63,0x6e,0xe8 }, { 0x3b,0xbb,0x7b,0xdb }, + { 0x26,0x78,0x09,0xcd }, { 0x59,0x18,0xf4,0x6e }, + { 0x9a,0xb7,0x01,0xec }, { 0x4f,0x9a,0xa8,0x83 }, + { 0x95,0x6e,0x65,0xe6 }, { 0xff,0xe6,0x7e,0xaa }, + { 0xbc,0xcf,0x08,0x21 }, { 0x15,0xe8,0xe6,0xef }, + { 0xe7,0x9b,0xd9,0xba }, { 0x6f,0x36,0xce,0x4a }, + { 0x9f,0x09,0xd4,0xea }, { 0xb0,0x7c,0xd6,0x29 }, + { 0xa4,0xb2,0xaf,0x31 }, { 0x3f,0x23,0x31,0x2a }, + { 0xa5,0x94,0x30,0xc6 }, { 0xa2,0x66,0xc0,0x35 }, + { 0x4e,0xbc,0x37,0x74 }, { 0x82,0xca,0xa6,0xfc }, + { 0x90,0xd0,0xb0,0xe0 }, { 0xa7,0xd8,0x15,0x33 }, + { 0x04,0x98,0x4a,0xf1 }, { 0xec,0xda,0xf7,0x41 }, + { 0xcd,0x50,0x0e,0x7f }, { 0x91,0xf6,0x2f,0x17 }, + { 0x4d,0xd6,0x8d,0x76 }, { 0xef,0xb0,0x4d,0x43 }, + { 0xaa,0x4d,0x54,0xcc }, { 0x96,0x04,0xdf,0xe4 }, + { 0xd1,0xb5,0xe3,0x9e }, { 0x6a,0x88,0x1b,0x4c }, + { 0x2c,0x1f,0xb8,0xc1 }, { 0x65,0x51,0x7f,0x46 }, + { 0x5e,0xea,0x04,0x9d }, { 0x8c,0x35,0x5d,0x01 }, + { 0x87,0x74,0x73,0xfa }, { 0x0b,0x41,0x2e,0xfb }, + { 0x67,0x1d,0x5a,0xb3 }, { 0xdb,0xd2,0x52,0x92 }, + { 0x10,0x56,0x33,0xe9 }, { 0xd6,0x47,0x13,0x6d }, + { 0xd7,0x61,0x8c,0x9a }, { 0xa1,0x0c,0x7a,0x37 }, + { 0xf8,0x14,0x8e,0x59 }, { 0x13,0x3c,0x89,0xeb }, + { 0xa9,0x27,0xee,0xce }, { 0x61,0xc9,0x35,0xb7 }, + { 0x1c,0xe5,0xed,0xe1 }, { 0x47,0xb1,0x3c,0x7a }, + { 0xd2,0xdf,0x59,0x9c }, { 0xf2,0x73,0x3f,0x55 }, + { 0x14,0xce,0x79,0x18 }, { 0xc7,0x37,0xbf,0x73 }, + { 0xf7,0xcd,0xea,0x53 }, { 0xfd,0xaa,0x5b,0x5f }, + { 0x3d,0x6f,0x14,0xdf }, { 0x44,0xdb,0x86,0x78 }, + { 0xaf,0xf3,0x81,0xca }, { 0x68,0xc4,0x3e,0xb9 }, + { 0x24,0x34,0x2c,0x38 }, { 0xa3,0x40,0x5f,0xc2 }, + { 0x1d,0xc3,0x72,0x16 }, { 0xe2,0x25,0x0c,0xbc }, + { 0x3c,0x49,0x8b,0x28 }, { 0x0d,0x95,0x41,0xff }, + { 0xa8,0x01,0x71,0x39 }, { 0x0c,0xb3,0xde,0x08 }, + { 0xb4,0xe4,0x9c,0xd8 }, { 0x56,0xc1,0x90,0x64 }, + { 0xcb,0x84,0x61,0x7b }, { 0x32,0xb6,0x70,0xd5 }, + { 0x6c,0x5c,0x74,0x48 }, { 0xb8,0x57,0x42,0xd0 } +}; + +static const byte S5[256] = { + 0x52,0x09,0x6a,0xd5,0x30,0x36,0xa5,0x38, + 0xbf,0x40,0xa3,0x9e,0x81,0xf3,0xd7,0xfb, + 0x7c,0xe3,0x39,0x82,0x9b,0x2f,0xff,0x87, + 0x34,0x8e,0x43,0x44,0xc4,0xde,0xe9,0xcb, + 0x54,0x7b,0x94,0x32,0xa6,0xc2,0x23,0x3d, + 0xee,0x4c,0x95,0x0b,0x42,0xfa,0xc3,0x4e, + 0x08,0x2e,0xa1,0x66,0x28,0xd9,0x24,0xb2, + 0x76,0x5b,0xa2,0x49,0x6d,0x8b,0xd1,0x25, + 0x72,0xf8,0xf6,0x64,0x86,0x68,0x98,0x16, + 0xd4,0xa4,0x5c,0xcc,0x5d,0x65,0xb6,0x92, + 0x6c,0x70,0x48,0x50,0xfd,0xed,0xb9,0xda, + 0x5e,0x15,0x46,0x57,0xa7,0x8d,0x9d,0x84, + 0x90,0xd8,0xab,0x00,0x8c,0xbc,0xd3,0x0a, + 0xf7,0xe4,0x58,0x05,0xb8,0xb3,0x45,0x06, + 0xd0,0x2c,0x1e,0x8f,0xca,0x3f,0x0f,0x02, + 0xc1,0xaf,0xbd,0x03,0x01,0x13,0x8a,0x6b, + 0x3a,0x91,0x11,0x41,0x4f,0x67,0xdc,0xea, + 0x97,0xf2,0xcf,0xce,0xf0,0xb4,0xe6,0x73, + 0x96,0xac,0x74,0x22,0xe7,0xad,0x35,0x85, + 0xe2,0xf9,0x37,0xe8,0x1c,0x75,0xdf,0x6e, + 0x47,0xf1,0x1a,0x71,0x1d,0x29,0xc5,0x89, + 0x6f,0xb7,0x62,0x0e,0xaa,0x18,0xbe,0x1b, + 0xfc,0x56,0x3e,0x4b,0xc6,0xd2,0x79,0x20, + 0x9a,0xdb,0xc0,0xfe,0x78,0xcd,0x5a,0xf4, + 0x1f,0xdd,0xa8,0x33,0x88,0x07,0xc7,0x31, + 0xb1,0x12,0x10,0x59,0x27,0x80,0xec,0x5f, + 0x60,0x51,0x7f,0xa9,0x19,0xb5,0x4a,0x0d, + 0x2d,0xe5,0x7a,0x9f,0x93,0xc9,0x9c,0xef, + 0xa0,0xe0,0x3b,0x4d,0xae,0x2a,0xf5,0xb0, + 0xc8,0xeb,0xbb,0x3c,0x83,0x53,0x99,0x61, + 0x17,0x2b,0x04,0x7e,0xba,0x77,0xd6,0x26, + 0xe1,0x69,0x14,0x63,0x55,0x21,0x0c,0x7d +}; + +static const byte U1[256][4] = { + { 0x00,0x00,0x00,0x00 }, { 0x0e,0x09,0x0d,0x0b }, + { 0x1c,0x12,0x1a,0x16 }, { 0x12,0x1b,0x17,0x1d }, + { 0x38,0x24,0x34,0x2c }, { 0x36,0x2d,0x39,0x27 }, + { 0x24,0x36,0x2e,0x3a }, { 0x2a,0x3f,0x23,0x31 }, + { 0x70,0x48,0x68,0x58 }, { 0x7e,0x41,0x65,0x53 }, + { 0x6c,0x5a,0x72,0x4e }, { 0x62,0x53,0x7f,0x45 }, + { 0x48,0x6c,0x5c,0x74 }, { 0x46,0x65,0x51,0x7f }, + { 0x54,0x7e,0x46,0x62 }, { 0x5a,0x77,0x4b,0x69 }, + { 0xe0,0x90,0xd0,0xb0 }, { 0xee,0x99,0xdd,0xbb }, + { 0xfc,0x82,0xca,0xa6 }, { 0xf2,0x8b,0xc7,0xad }, + { 0xd8,0xb4,0xe4,0x9c }, { 0xd6,0xbd,0xe9,0x97 }, + { 0xc4,0xa6,0xfe,0x8a }, { 0xca,0xaf,0xf3,0x81 }, + { 0x90,0xd8,0xb8,0xe8 }, { 0x9e,0xd1,0xb5,0xe3 }, + { 0x8c,0xca,0xa2,0xfe }, { 0x82,0xc3,0xaf,0xf5 }, + { 0xa8,0xfc,0x8c,0xc4 }, { 0xa6,0xf5,0x81,0xcf }, + { 0xb4,0xee,0x96,0xd2 }, { 0xba,0xe7,0x9b,0xd9 }, + { 0xdb,0x3b,0xbb,0x7b }, { 0xd5,0x32,0xb6,0x70 }, + { 0xc7,0x29,0xa1,0x6d }, { 0xc9,0x20,0xac,0x66 }, + { 0xe3,0x1f,0x8f,0x57 }, { 0xed,0x16,0x82,0x5c }, + { 0xff,0x0d,0x95,0x41 }, { 0xf1,0x04,0x98,0x4a }, + { 0xab,0x73,0xd3,0x23 }, { 0xa5,0x7a,0xde,0x28 }, + { 0xb7,0x61,0xc9,0x35 }, { 0xb9,0x68,0xc4,0x3e }, + { 0x93,0x57,0xe7,0x0f }, { 0x9d,0x5e,0xea,0x04 }, + { 0x8f,0x45,0xfd,0x19 }, { 0x81,0x4c,0xf0,0x12 }, + { 0x3b,0xab,0x6b,0xcb }, { 0x35,0xa2,0x66,0xc0 }, + { 0x27,0xb9,0x71,0xdd }, { 0x29,0xb0,0x7c,0xd6 }, + { 0x03,0x8f,0x5f,0xe7 }, { 0x0d,0x86,0x52,0xec }, + { 0x1f,0x9d,0x45,0xf1 }, { 0x11,0x94,0x48,0xfa }, + { 0x4b,0xe3,0x03,0x93 }, { 0x45,0xea,0x0e,0x98 }, + { 0x57,0xf1,0x19,0x85 }, { 0x59,0xf8,0x14,0x8e }, + { 0x73,0xc7,0x37,0xbf }, { 0x7d,0xce,0x3a,0xb4 }, + { 0x6f,0xd5,0x2d,0xa9 }, { 0x61,0xdc,0x20,0xa2 }, + { 0xad,0x76,0x6d,0xf6 }, { 0xa3,0x7f,0x60,0xfd }, + { 0xb1,0x64,0x77,0xe0 }, { 0xbf,0x6d,0x7a,0xeb }, + { 0x95,0x52,0x59,0xda }, { 0x9b,0x5b,0x54,0xd1 }, + { 0x89,0x40,0x43,0xcc }, { 0x87,0x49,0x4e,0xc7 }, + { 0xdd,0x3e,0x05,0xae }, { 0xd3,0x37,0x08,0xa5 }, + { 0xc1,0x2c,0x1f,0xb8 }, { 0xcf,0x25,0x12,0xb3 }, + { 0xe5,0x1a,0x31,0x82 }, { 0xeb,0x13,0x3c,0x89 }, + { 0xf9,0x08,0x2b,0x94 }, { 0xf7,0x01,0x26,0x9f }, + { 0x4d,0xe6,0xbd,0x46 }, { 0x43,0xef,0xb0,0x4d }, + { 0x51,0xf4,0xa7,0x50 }, { 0x5f,0xfd,0xaa,0x5b }, + { 0x75,0xc2,0x89,0x6a }, { 0x7b,0xcb,0x84,0x61 }, + { 0x69,0xd0,0x93,0x7c }, { 0x67,0xd9,0x9e,0x77 }, + { 0x3d,0xae,0xd5,0x1e }, { 0x33,0xa7,0xd8,0x15 }, + { 0x21,0xbc,0xcf,0x08 }, { 0x2f,0xb5,0xc2,0x03 }, + { 0x05,0x8a,0xe1,0x32 }, { 0x0b,0x83,0xec,0x39 }, + { 0x19,0x98,0xfb,0x24 }, { 0x17,0x91,0xf6,0x2f }, + { 0x76,0x4d,0xd6,0x8d }, { 0x78,0x44,0xdb,0x86 }, + { 0x6a,0x5f,0xcc,0x9b }, { 0x64,0x56,0xc1,0x90 }, + { 0x4e,0x69,0xe2,0xa1 }, { 0x40,0x60,0xef,0xaa }, + { 0x52,0x7b,0xf8,0xb7 }, { 0x5c,0x72,0xf5,0xbc }, + { 0x06,0x05,0xbe,0xd5 }, { 0x08,0x0c,0xb3,0xde }, + { 0x1a,0x17,0xa4,0xc3 }, { 0x14,0x1e,0xa9,0xc8 }, + { 0x3e,0x21,0x8a,0xf9 }, { 0x30,0x28,0x87,0xf2 }, + { 0x22,0x33,0x90,0xef }, { 0x2c,0x3a,0x9d,0xe4 }, + { 0x96,0xdd,0x06,0x3d }, { 0x98,0xd4,0x0b,0x36 }, + { 0x8a,0xcf,0x1c,0x2b }, { 0x84,0xc6,0x11,0x20 }, + { 0xae,0xf9,0x32,0x11 }, { 0xa0,0xf0,0x3f,0x1a }, + { 0xb2,0xeb,0x28,0x07 }, { 0xbc,0xe2,0x25,0x0c }, + { 0xe6,0x95,0x6e,0x65 }, { 0xe8,0x9c,0x63,0x6e }, + { 0xfa,0x87,0x74,0x73 }, { 0xf4,0x8e,0x79,0x78 }, + { 0xde,0xb1,0x5a,0x49 }, { 0xd0,0xb8,0x57,0x42 }, + { 0xc2,0xa3,0x40,0x5f }, { 0xcc,0xaa,0x4d,0x54 }, + { 0x41,0xec,0xda,0xf7 }, { 0x4f,0xe5,0xd7,0xfc }, + { 0x5d,0xfe,0xc0,0xe1 }, { 0x53,0xf7,0xcd,0xea }, + { 0x79,0xc8,0xee,0xdb }, { 0x77,0xc1,0xe3,0xd0 }, + { 0x65,0xda,0xf4,0xcd }, { 0x6b,0xd3,0xf9,0xc6 }, + { 0x31,0xa4,0xb2,0xaf }, { 0x3f,0xad,0xbf,0xa4 }, + { 0x2d,0xb6,0xa8,0xb9 }, { 0x23,0xbf,0xa5,0xb2 }, + { 0x09,0x80,0x86,0x83 }, { 0x07,0x89,0x8b,0x88 }, + { 0x15,0x92,0x9c,0x95 }, { 0x1b,0x9b,0x91,0x9e }, + { 0xa1,0x7c,0x0a,0x47 }, { 0xaf,0x75,0x07,0x4c }, + { 0xbd,0x6e,0x10,0x51 }, { 0xb3,0x67,0x1d,0x5a }, + { 0x99,0x58,0x3e,0x6b }, { 0x97,0x51,0x33,0x60 }, + { 0x85,0x4a,0x24,0x7d }, { 0x8b,0x43,0x29,0x76 }, + { 0xd1,0x34,0x62,0x1f }, { 0xdf,0x3d,0x6f,0x14 }, + { 0xcd,0x26,0x78,0x09 }, { 0xc3,0x2f,0x75,0x02 }, + { 0xe9,0x10,0x56,0x33 }, { 0xe7,0x19,0x5b,0x38 }, + { 0xf5,0x02,0x4c,0x25 }, { 0xfb,0x0b,0x41,0x2e }, + { 0x9a,0xd7,0x61,0x8c }, { 0x94,0xde,0x6c,0x87 }, + { 0x86,0xc5,0x7b,0x9a }, { 0x88,0xcc,0x76,0x91 }, + { 0xa2,0xf3,0x55,0xa0 }, { 0xac,0xfa,0x58,0xab }, + { 0xbe,0xe1,0x4f,0xb6 }, { 0xb0,0xe8,0x42,0xbd }, + { 0xea,0x9f,0x09,0xd4 }, { 0xe4,0x96,0x04,0xdf }, + { 0xf6,0x8d,0x13,0xc2 }, { 0xf8,0x84,0x1e,0xc9 }, + { 0xd2,0xbb,0x3d,0xf8 }, { 0xdc,0xb2,0x30,0xf3 }, + { 0xce,0xa9,0x27,0xee }, { 0xc0,0xa0,0x2a,0xe5 }, + { 0x7a,0x47,0xb1,0x3c }, { 0x74,0x4e,0xbc,0x37 }, + { 0x66,0x55,0xab,0x2a }, { 0x68,0x5c,0xa6,0x21 }, + { 0x42,0x63,0x85,0x10 }, { 0x4c,0x6a,0x88,0x1b }, + { 0x5e,0x71,0x9f,0x06 }, { 0x50,0x78,0x92,0x0d }, + { 0x0a,0x0f,0xd9,0x64 }, { 0x04,0x06,0xd4,0x6f }, + { 0x16,0x1d,0xc3,0x72 }, { 0x18,0x14,0xce,0x79 }, + { 0x32,0x2b,0xed,0x48 }, { 0x3c,0x22,0xe0,0x43 }, + { 0x2e,0x39,0xf7,0x5e }, { 0x20,0x30,0xfa,0x55 }, + { 0xec,0x9a,0xb7,0x01 }, { 0xe2,0x93,0xba,0x0a }, + { 0xf0,0x88,0xad,0x17 }, { 0xfe,0x81,0xa0,0x1c }, + { 0xd4,0xbe,0x83,0x2d }, { 0xda,0xb7,0x8e,0x26 }, + { 0xc8,0xac,0x99,0x3b }, { 0xc6,0xa5,0x94,0x30 }, + { 0x9c,0xd2,0xdf,0x59 }, { 0x92,0xdb,0xd2,0x52 }, + { 0x80,0xc0,0xc5,0x4f }, { 0x8e,0xc9,0xc8,0x44 }, + { 0xa4,0xf6,0xeb,0x75 }, { 0xaa,0xff,0xe6,0x7e }, + { 0xb8,0xe4,0xf1,0x63 }, { 0xb6,0xed,0xfc,0x68 }, + { 0x0c,0x0a,0x67,0xb1 }, { 0x02,0x03,0x6a,0xba }, + { 0x10,0x18,0x7d,0xa7 }, { 0x1e,0x11,0x70,0xac }, + { 0x34,0x2e,0x53,0x9d }, { 0x3a,0x27,0x5e,0x96 }, + { 0x28,0x3c,0x49,0x8b }, { 0x26,0x35,0x44,0x80 }, + { 0x7c,0x42,0x0f,0xe9 }, { 0x72,0x4b,0x02,0xe2 }, + { 0x60,0x50,0x15,0xff }, { 0x6e,0x59,0x18,0xf4 }, + { 0x44,0x66,0x3b,0xc5 }, { 0x4a,0x6f,0x36,0xce }, + { 0x58,0x74,0x21,0xd3 }, { 0x56,0x7d,0x2c,0xd8 }, + { 0x37,0xa1,0x0c,0x7a }, { 0x39,0xa8,0x01,0x71 }, + { 0x2b,0xb3,0x16,0x6c }, { 0x25,0xba,0x1b,0x67 }, + { 0x0f,0x85,0x38,0x56 }, { 0x01,0x8c,0x35,0x5d }, + { 0x13,0x97,0x22,0x40 }, { 0x1d,0x9e,0x2f,0x4b }, + { 0x47,0xe9,0x64,0x22 }, { 0x49,0xe0,0x69,0x29 }, + { 0x5b,0xfb,0x7e,0x34 }, { 0x55,0xf2,0x73,0x3f }, + { 0x7f,0xcd,0x50,0x0e }, { 0x71,0xc4,0x5d,0x05 }, + { 0x63,0xdf,0x4a,0x18 }, { 0x6d,0xd6,0x47,0x13 }, + { 0xd7,0x31,0xdc,0xca }, { 0xd9,0x38,0xd1,0xc1 }, + { 0xcb,0x23,0xc6,0xdc }, { 0xc5,0x2a,0xcb,0xd7 }, + { 0xef,0x15,0xe8,0xe6 }, { 0xe1,0x1c,0xe5,0xed }, + { 0xf3,0x07,0xf2,0xf0 }, { 0xfd,0x0e,0xff,0xfb }, + { 0xa7,0x79,0xb4,0x92 }, { 0xa9,0x70,0xb9,0x99 }, + { 0xbb,0x6b,0xae,0x84 }, { 0xb5,0x62,0xa3,0x8f }, + { 0x9f,0x5d,0x80,0xbe }, { 0x91,0x54,0x8d,0xb5 }, + { 0x83,0x4f,0x9a,0xa8 }, { 0x8d,0x46,0x97,0xa3 } +}; + +static const byte U2[256][4] = { + { 0x00,0x00,0x00,0x00 }, { 0x0b,0x0e,0x09,0x0d }, + { 0x16,0x1c,0x12,0x1a }, { 0x1d,0x12,0x1b,0x17 }, + { 0x2c,0x38,0x24,0x34 }, { 0x27,0x36,0x2d,0x39 }, + { 0x3a,0x24,0x36,0x2e }, { 0x31,0x2a,0x3f,0x23 }, + { 0x58,0x70,0x48,0x68 }, { 0x53,0x7e,0x41,0x65 }, + { 0x4e,0x6c,0x5a,0x72 }, { 0x45,0x62,0x53,0x7f }, + { 0x74,0x48,0x6c,0x5c }, { 0x7f,0x46,0x65,0x51 }, + { 0x62,0x54,0x7e,0x46 }, { 0x69,0x5a,0x77,0x4b }, + { 0xb0,0xe0,0x90,0xd0 }, { 0xbb,0xee,0x99,0xdd }, + { 0xa6,0xfc,0x82,0xca }, { 0xad,0xf2,0x8b,0xc7 }, + { 0x9c,0xd8,0xb4,0xe4 }, { 0x97,0xd6,0xbd,0xe9 }, + { 0x8a,0xc4,0xa6,0xfe }, { 0x81,0xca,0xaf,0xf3 }, + { 0xe8,0x90,0xd8,0xb8 }, { 0xe3,0x9e,0xd1,0xb5 }, + { 0xfe,0x8c,0xca,0xa2 }, { 0xf5,0x82,0xc3,0xaf }, + { 0xc4,0xa8,0xfc,0x8c }, { 0xcf,0xa6,0xf5,0x81 }, + { 0xd2,0xb4,0xee,0x96 }, { 0xd9,0xba,0xe7,0x9b }, + { 0x7b,0xdb,0x3b,0xbb }, { 0x70,0xd5,0x32,0xb6 }, + { 0x6d,0xc7,0x29,0xa1 }, { 0x66,0xc9,0x20,0xac }, + { 0x57,0xe3,0x1f,0x8f }, { 0x5c,0xed,0x16,0x82 }, + { 0x41,0xff,0x0d,0x95 }, { 0x4a,0xf1,0x04,0x98 }, + { 0x23,0xab,0x73,0xd3 }, { 0x28,0xa5,0x7a,0xde }, + { 0x35,0xb7,0x61,0xc9 }, { 0x3e,0xb9,0x68,0xc4 }, + { 0x0f,0x93,0x57,0xe7 }, { 0x04,0x9d,0x5e,0xea }, + { 0x19,0x8f,0x45,0xfd }, { 0x12,0x81,0x4c,0xf0 }, + { 0xcb,0x3b,0xab,0x6b }, { 0xc0,0x35,0xa2,0x66 }, + { 0xdd,0x27,0xb9,0x71 }, { 0xd6,0x29,0xb0,0x7c }, + { 0xe7,0x03,0x8f,0x5f }, { 0xec,0x0d,0x86,0x52 }, + { 0xf1,0x1f,0x9d,0x45 }, { 0xfa,0x11,0x94,0x48 }, + { 0x93,0x4b,0xe3,0x03 }, { 0x98,0x45,0xea,0x0e }, + { 0x85,0x57,0xf1,0x19 }, { 0x8e,0x59,0xf8,0x14 }, + { 0xbf,0x73,0xc7,0x37 }, { 0xb4,0x7d,0xce,0x3a }, + { 0xa9,0x6f,0xd5,0x2d }, { 0xa2,0x61,0xdc,0x20 }, + { 0xf6,0xad,0x76,0x6d }, { 0xfd,0xa3,0x7f,0x60 }, + { 0xe0,0xb1,0x64,0x77 }, { 0xeb,0xbf,0x6d,0x7a }, + { 0xda,0x95,0x52,0x59 }, { 0xd1,0x9b,0x5b,0x54 }, + { 0xcc,0x89,0x40,0x43 }, { 0xc7,0x87,0x49,0x4e }, + { 0xae,0xdd,0x3e,0x05 }, { 0xa5,0xd3,0x37,0x08 }, + { 0xb8,0xc1,0x2c,0x1f }, { 0xb3,0xcf,0x25,0x12 }, + { 0x82,0xe5,0x1a,0x31 }, { 0x89,0xeb,0x13,0x3c }, + { 0x94,0xf9,0x08,0x2b }, { 0x9f,0xf7,0x01,0x26 }, + { 0x46,0x4d,0xe6,0xbd }, { 0x4d,0x43,0xef,0xb0 }, + { 0x50,0x51,0xf4,0xa7 }, { 0x5b,0x5f,0xfd,0xaa }, + { 0x6a,0x75,0xc2,0x89 }, { 0x61,0x7b,0xcb,0x84 }, + { 0x7c,0x69,0xd0,0x93 }, { 0x77,0x67,0xd9,0x9e }, + { 0x1e,0x3d,0xae,0xd5 }, { 0x15,0x33,0xa7,0xd8 }, + { 0x08,0x21,0xbc,0xcf }, { 0x03,0x2f,0xb5,0xc2 }, + { 0x32,0x05,0x8a,0xe1 }, { 0x39,0x0b,0x83,0xec }, + { 0x24,0x19,0x98,0xfb }, { 0x2f,0x17,0x91,0xf6 }, + { 0x8d,0x76,0x4d,0xd6 }, { 0x86,0x78,0x44,0xdb }, + { 0x9b,0x6a,0x5f,0xcc }, { 0x90,0x64,0x56,0xc1 }, + { 0xa1,0x4e,0x69,0xe2 }, { 0xaa,0x40,0x60,0xef }, + { 0xb7,0x52,0x7b,0xf8 }, { 0xbc,0x5c,0x72,0xf5 }, + { 0xd5,0x06,0x05,0xbe }, { 0xde,0x08,0x0c,0xb3 }, + { 0xc3,0x1a,0x17,0xa4 }, { 0xc8,0x14,0x1e,0xa9 }, + { 0xf9,0x3e,0x21,0x8a }, { 0xf2,0x30,0x28,0x87 }, + { 0xef,0x22,0x33,0x90 }, { 0xe4,0x2c,0x3a,0x9d }, + { 0x3d,0x96,0xdd,0x06 }, { 0x36,0x98,0xd4,0x0b }, + { 0x2b,0x8a,0xcf,0x1c }, { 0x20,0x84,0xc6,0x11 }, + { 0x11,0xae,0xf9,0x32 }, { 0x1a,0xa0,0xf0,0x3f }, + { 0x07,0xb2,0xeb,0x28 }, { 0x0c,0xbc,0xe2,0x25 }, + { 0x65,0xe6,0x95,0x6e }, { 0x6e,0xe8,0x9c,0x63 }, + { 0x73,0xfa,0x87,0x74 }, { 0x78,0xf4,0x8e,0x79 }, + { 0x49,0xde,0xb1,0x5a }, { 0x42,0xd0,0xb8,0x57 }, + { 0x5f,0xc2,0xa3,0x40 }, { 0x54,0xcc,0xaa,0x4d }, + { 0xf7,0x41,0xec,0xda }, { 0xfc,0x4f,0xe5,0xd7 }, + { 0xe1,0x5d,0xfe,0xc0 }, { 0xea,0x53,0xf7,0xcd }, + { 0xdb,0x79,0xc8,0xee }, { 0xd0,0x77,0xc1,0xe3 }, + { 0xcd,0x65,0xda,0xf4 }, { 0xc6,0x6b,0xd3,0xf9 }, + { 0xaf,0x31,0xa4,0xb2 }, { 0xa4,0x3f,0xad,0xbf }, + { 0xb9,0x2d,0xb6,0xa8 }, { 0xb2,0x23,0xbf,0xa5 }, + { 0x83,0x09,0x80,0x86 }, { 0x88,0x07,0x89,0x8b }, + { 0x95,0x15,0x92,0x9c }, { 0x9e,0x1b,0x9b,0x91 }, + { 0x47,0xa1,0x7c,0x0a }, { 0x4c,0xaf,0x75,0x07 }, + { 0x51,0xbd,0x6e,0x10 }, { 0x5a,0xb3,0x67,0x1d }, + { 0x6b,0x99,0x58,0x3e }, { 0x60,0x97,0x51,0x33 }, + { 0x7d,0x85,0x4a,0x24 }, { 0x76,0x8b,0x43,0x29 }, + { 0x1f,0xd1,0x34,0x62 }, { 0x14,0xdf,0x3d,0x6f }, + { 0x09,0xcd,0x26,0x78 }, { 0x02,0xc3,0x2f,0x75 }, + { 0x33,0xe9,0x10,0x56 }, { 0x38,0xe7,0x19,0x5b }, + { 0x25,0xf5,0x02,0x4c }, { 0x2e,0xfb,0x0b,0x41 }, + { 0x8c,0x9a,0xd7,0x61 }, { 0x87,0x94,0xde,0x6c }, + { 0x9a,0x86,0xc5,0x7b }, { 0x91,0x88,0xcc,0x76 }, + { 0xa0,0xa2,0xf3,0x55 }, { 0xab,0xac,0xfa,0x58 }, + { 0xb6,0xbe,0xe1,0x4f }, { 0xbd,0xb0,0xe8,0x42 }, + { 0xd4,0xea,0x9f,0x09 }, { 0xdf,0xe4,0x96,0x04 }, + { 0xc2,0xf6,0x8d,0x13 }, { 0xc9,0xf8,0x84,0x1e }, + { 0xf8,0xd2,0xbb,0x3d }, { 0xf3,0xdc,0xb2,0x30 }, + { 0xee,0xce,0xa9,0x27 }, { 0xe5,0xc0,0xa0,0x2a }, + { 0x3c,0x7a,0x47,0xb1 }, { 0x37,0x74,0x4e,0xbc }, + { 0x2a,0x66,0x55,0xab }, { 0x21,0x68,0x5c,0xa6 }, + { 0x10,0x42,0x63,0x85 }, { 0x1b,0x4c,0x6a,0x88 }, + { 0x06,0x5e,0x71,0x9f }, { 0x0d,0x50,0x78,0x92 }, + { 0x64,0x0a,0x0f,0xd9 }, { 0x6f,0x04,0x06,0xd4 }, + { 0x72,0x16,0x1d,0xc3 }, { 0x79,0x18,0x14,0xce }, + { 0x48,0x32,0x2b,0xed }, { 0x43,0x3c,0x22,0xe0 }, + { 0x5e,0x2e,0x39,0xf7 }, { 0x55,0x20,0x30,0xfa }, + { 0x01,0xec,0x9a,0xb7 }, { 0x0a,0xe2,0x93,0xba }, + { 0x17,0xf0,0x88,0xad }, { 0x1c,0xfe,0x81,0xa0 }, + { 0x2d,0xd4,0xbe,0x83 }, { 0x26,0xda,0xb7,0x8e }, + { 0x3b,0xc8,0xac,0x99 }, { 0x30,0xc6,0xa5,0x94 }, + { 0x59,0x9c,0xd2,0xdf }, { 0x52,0x92,0xdb,0xd2 }, + { 0x4f,0x80,0xc0,0xc5 }, { 0x44,0x8e,0xc9,0xc8 }, + { 0x75,0xa4,0xf6,0xeb }, { 0x7e,0xaa,0xff,0xe6 }, + { 0x63,0xb8,0xe4,0xf1 }, { 0x68,0xb6,0xed,0xfc }, + { 0xb1,0x0c,0x0a,0x67 }, { 0xba,0x02,0x03,0x6a }, + { 0xa7,0x10,0x18,0x7d }, { 0xac,0x1e,0x11,0x70 }, + { 0x9d,0x34,0x2e,0x53 }, { 0x96,0x3a,0x27,0x5e }, + { 0x8b,0x28,0x3c,0x49 }, { 0x80,0x26,0x35,0x44 }, + { 0xe9,0x7c,0x42,0x0f }, { 0xe2,0x72,0x4b,0x02 }, + { 0xff,0x60,0x50,0x15 }, { 0xf4,0x6e,0x59,0x18 }, + { 0xc5,0x44,0x66,0x3b }, { 0xce,0x4a,0x6f,0x36 }, + { 0xd3,0x58,0x74,0x21 }, { 0xd8,0x56,0x7d,0x2c }, + { 0x7a,0x37,0xa1,0x0c }, { 0x71,0x39,0xa8,0x01 }, + { 0x6c,0x2b,0xb3,0x16 }, { 0x67,0x25,0xba,0x1b }, + { 0x56,0x0f,0x85,0x38 }, { 0x5d,0x01,0x8c,0x35 }, + { 0x40,0x13,0x97,0x22 }, { 0x4b,0x1d,0x9e,0x2f }, + { 0x22,0x47,0xe9,0x64 }, { 0x29,0x49,0xe0,0x69 }, + { 0x34,0x5b,0xfb,0x7e }, { 0x3f,0x55,0xf2,0x73 }, + { 0x0e,0x7f,0xcd,0x50 }, { 0x05,0x71,0xc4,0x5d }, + { 0x18,0x63,0xdf,0x4a }, { 0x13,0x6d,0xd6,0x47 }, + { 0xca,0xd7,0x31,0xdc }, { 0xc1,0xd9,0x38,0xd1 }, + { 0xdc,0xcb,0x23,0xc6 }, { 0xd7,0xc5,0x2a,0xcb }, + { 0xe6,0xef,0x15,0xe8 }, { 0xed,0xe1,0x1c,0xe5 }, + { 0xf0,0xf3,0x07,0xf2 }, { 0xfb,0xfd,0x0e,0xff }, + { 0x92,0xa7,0x79,0xb4 }, { 0x99,0xa9,0x70,0xb9 }, + { 0x84,0xbb,0x6b,0xae }, { 0x8f,0xb5,0x62,0xa3 }, + { 0xbe,0x9f,0x5d,0x80 }, { 0xb5,0x91,0x54,0x8d }, + { 0xa8,0x83,0x4f,0x9a }, { 0xa3,0x8d,0x46,0x97 } +}; + +static const byte U3[256][4] = { + { 0x00,0x00,0x00,0x00 }, { 0x0d,0x0b,0x0e,0x09 }, + { 0x1a,0x16,0x1c,0x12 }, { 0x17,0x1d,0x12,0x1b }, + { 0x34,0x2c,0x38,0x24 }, { 0x39,0x27,0x36,0x2d }, + { 0x2e,0x3a,0x24,0x36 }, { 0x23,0x31,0x2a,0x3f }, + { 0x68,0x58,0x70,0x48 }, { 0x65,0x53,0x7e,0x41 }, + { 0x72,0x4e,0x6c,0x5a }, { 0x7f,0x45,0x62,0x53 }, + { 0x5c,0x74,0x48,0x6c }, { 0x51,0x7f,0x46,0x65 }, + { 0x46,0x62,0x54,0x7e }, { 0x4b,0x69,0x5a,0x77 }, + { 0xd0,0xb0,0xe0,0x90 }, { 0xdd,0xbb,0xee,0x99 }, + { 0xca,0xa6,0xfc,0x82 }, { 0xc7,0xad,0xf2,0x8b }, + { 0xe4,0x9c,0xd8,0xb4 }, { 0xe9,0x97,0xd6,0xbd }, + { 0xfe,0x8a,0xc4,0xa6 }, { 0xf3,0x81,0xca,0xaf }, + { 0xb8,0xe8,0x90,0xd8 }, { 0xb5,0xe3,0x9e,0xd1 }, + { 0xa2,0xfe,0x8c,0xca }, { 0xaf,0xf5,0x82,0xc3 }, + { 0x8c,0xc4,0xa8,0xfc }, { 0x81,0xcf,0xa6,0xf5 }, + { 0x96,0xd2,0xb4,0xee }, { 0x9b,0xd9,0xba,0xe7 }, + { 0xbb,0x7b,0xdb,0x3b }, { 0xb6,0x70,0xd5,0x32 }, + { 0xa1,0x6d,0xc7,0x29 }, { 0xac,0x66,0xc9,0x20 }, + { 0x8f,0x57,0xe3,0x1f }, { 0x82,0x5c,0xed,0x16 }, + { 0x95,0x41,0xff,0x0d }, { 0x98,0x4a,0xf1,0x04 }, + { 0xd3,0x23,0xab,0x73 }, { 0xde,0x28,0xa5,0x7a }, + { 0xc9,0x35,0xb7,0x61 }, { 0xc4,0x3e,0xb9,0x68 }, + { 0xe7,0x0f,0x93,0x57 }, { 0xea,0x04,0x9d,0x5e }, + { 0xfd,0x19,0x8f,0x45 }, { 0xf0,0x12,0x81,0x4c }, + { 0x6b,0xcb,0x3b,0xab }, { 0x66,0xc0,0x35,0xa2 }, + { 0x71,0xdd,0x27,0xb9 }, { 0x7c,0xd6,0x29,0xb0 }, + { 0x5f,0xe7,0x03,0x8f }, { 0x52,0xec,0x0d,0x86 }, + { 0x45,0xf1,0x1f,0x9d }, { 0x48,0xfa,0x11,0x94 }, + { 0x03,0x93,0x4b,0xe3 }, { 0x0e,0x98,0x45,0xea }, + { 0x19,0x85,0x57,0xf1 }, { 0x14,0x8e,0x59,0xf8 }, + { 0x37,0xbf,0x73,0xc7 }, { 0x3a,0xb4,0x7d,0xce }, + { 0x2d,0xa9,0x6f,0xd5 }, { 0x20,0xa2,0x61,0xdc }, + { 0x6d,0xf6,0xad,0x76 }, { 0x60,0xfd,0xa3,0x7f }, + { 0x77,0xe0,0xb1,0x64 }, { 0x7a,0xeb,0xbf,0x6d }, + { 0x59,0xda,0x95,0x52 }, { 0x54,0xd1,0x9b,0x5b }, + { 0x43,0xcc,0x89,0x40 }, { 0x4e,0xc7,0x87,0x49 }, + { 0x05,0xae,0xdd,0x3e }, { 0x08,0xa5,0xd3,0x37 }, + { 0x1f,0xb8,0xc1,0x2c }, { 0x12,0xb3,0xcf,0x25 }, + { 0x31,0x82,0xe5,0x1a }, { 0x3c,0x89,0xeb,0x13 }, + { 0x2b,0x94,0xf9,0x08 }, { 0x26,0x9f,0xf7,0x01 }, + { 0xbd,0x46,0x4d,0xe6 }, { 0xb0,0x4d,0x43,0xef }, + { 0xa7,0x50,0x51,0xf4 }, { 0xaa,0x5b,0x5f,0xfd }, + { 0x89,0x6a,0x75,0xc2 }, { 0x84,0x61,0x7b,0xcb }, + { 0x93,0x7c,0x69,0xd0 }, { 0x9e,0x77,0x67,0xd9 }, + { 0xd5,0x1e,0x3d,0xae }, { 0xd8,0x15,0x33,0xa7 }, + { 0xcf,0x08,0x21,0xbc }, { 0xc2,0x03,0x2f,0xb5 }, + { 0xe1,0x32,0x05,0x8a }, { 0xec,0x39,0x0b,0x83 }, + { 0xfb,0x24,0x19,0x98 }, { 0xf6,0x2f,0x17,0x91 }, + { 0xd6,0x8d,0x76,0x4d }, { 0xdb,0x86,0x78,0x44 }, + { 0xcc,0x9b,0x6a,0x5f }, { 0xc1,0x90,0x64,0x56 }, + { 0xe2,0xa1,0x4e,0x69 }, { 0xef,0xaa,0x40,0x60 }, + { 0xf8,0xb7,0x52,0x7b }, { 0xf5,0xbc,0x5c,0x72 }, + { 0xbe,0xd5,0x06,0x05 }, { 0xb3,0xde,0x08,0x0c }, + { 0xa4,0xc3,0x1a,0x17 }, { 0xa9,0xc8,0x14,0x1e }, + { 0x8a,0xf9,0x3e,0x21 }, { 0x87,0xf2,0x30,0x28 }, + { 0x90,0xef,0x22,0x33 }, { 0x9d,0xe4,0x2c,0x3a }, + { 0x06,0x3d,0x96,0xdd }, { 0x0b,0x36,0x98,0xd4 }, + { 0x1c,0x2b,0x8a,0xcf }, { 0x11,0x20,0x84,0xc6 }, + { 0x32,0x11,0xae,0xf9 }, { 0x3f,0x1a,0xa0,0xf0 }, + { 0x28,0x07,0xb2,0xeb }, { 0x25,0x0c,0xbc,0xe2 }, + { 0x6e,0x65,0xe6,0x95 }, { 0x63,0x6e,0xe8,0x9c }, + { 0x74,0x73,0xfa,0x87 }, { 0x79,0x78,0xf4,0x8e }, + { 0x5a,0x49,0xde,0xb1 }, { 0x57,0x42,0xd0,0xb8 }, + { 0x40,0x5f,0xc2,0xa3 }, { 0x4d,0x54,0xcc,0xaa }, + { 0xda,0xf7,0x41,0xec }, { 0xd7,0xfc,0x4f,0xe5 }, + { 0xc0,0xe1,0x5d,0xfe }, { 0xcd,0xea,0x53,0xf7 }, + { 0xee,0xdb,0x79,0xc8 }, { 0xe3,0xd0,0x77,0xc1 }, + { 0xf4,0xcd,0x65,0xda }, { 0xf9,0xc6,0x6b,0xd3 }, + { 0xb2,0xaf,0x31,0xa4 }, { 0xbf,0xa4,0x3f,0xad }, + { 0xa8,0xb9,0x2d,0xb6 }, { 0xa5,0xb2,0x23,0xbf }, + { 0x86,0x83,0x09,0x80 }, { 0x8b,0x88,0x07,0x89 }, + { 0x9c,0x95,0x15,0x92 }, { 0x91,0x9e,0x1b,0x9b }, + { 0x0a,0x47,0xa1,0x7c }, { 0x07,0x4c,0xaf,0x75 }, + { 0x10,0x51,0xbd,0x6e }, { 0x1d,0x5a,0xb3,0x67 }, + { 0x3e,0x6b,0x99,0x58 }, { 0x33,0x60,0x97,0x51 }, + { 0x24,0x7d,0x85,0x4a }, { 0x29,0x76,0x8b,0x43 }, + { 0x62,0x1f,0xd1,0x34 }, { 0x6f,0x14,0xdf,0x3d }, + { 0x78,0x09,0xcd,0x26 }, { 0x75,0x02,0xc3,0x2f }, + { 0x56,0x33,0xe9,0x10 }, { 0x5b,0x38,0xe7,0x19 }, + { 0x4c,0x25,0xf5,0x02 }, { 0x41,0x2e,0xfb,0x0b }, + { 0x61,0x8c,0x9a,0xd7 }, { 0x6c,0x87,0x94,0xde }, + { 0x7b,0x9a,0x86,0xc5 }, { 0x76,0x91,0x88,0xcc }, + { 0x55,0xa0,0xa2,0xf3 }, { 0x58,0xab,0xac,0xfa }, + { 0x4f,0xb6,0xbe,0xe1 }, { 0x42,0xbd,0xb0,0xe8 }, + { 0x09,0xd4,0xea,0x9f }, { 0x04,0xdf,0xe4,0x96 }, + { 0x13,0xc2,0xf6,0x8d }, { 0x1e,0xc9,0xf8,0x84 }, + { 0x3d,0xf8,0xd2,0xbb }, { 0x30,0xf3,0xdc,0xb2 }, + { 0x27,0xee,0xce,0xa9 }, { 0x2a,0xe5,0xc0,0xa0 }, + { 0xb1,0x3c,0x7a,0x47 }, { 0xbc,0x37,0x74,0x4e }, + { 0xab,0x2a,0x66,0x55 }, { 0xa6,0x21,0x68,0x5c }, + { 0x85,0x10,0x42,0x63 }, { 0x88,0x1b,0x4c,0x6a }, + { 0x9f,0x06,0x5e,0x71 }, { 0x92,0x0d,0x50,0x78 }, + { 0xd9,0x64,0x0a,0x0f }, { 0xd4,0x6f,0x04,0x06 }, + { 0xc3,0x72,0x16,0x1d }, { 0xce,0x79,0x18,0x14 }, + { 0xed,0x48,0x32,0x2b }, { 0xe0,0x43,0x3c,0x22 }, + { 0xf7,0x5e,0x2e,0x39 }, { 0xfa,0x55,0x20,0x30 }, + { 0xb7,0x01,0xec,0x9a }, { 0xba,0x0a,0xe2,0x93 }, + { 0xad,0x17,0xf0,0x88 }, { 0xa0,0x1c,0xfe,0x81 }, + { 0x83,0x2d,0xd4,0xbe }, { 0x8e,0x26,0xda,0xb7 }, + { 0x99,0x3b,0xc8,0xac }, { 0x94,0x30,0xc6,0xa5 }, + { 0xdf,0x59,0x9c,0xd2 }, { 0xd2,0x52,0x92,0xdb }, + { 0xc5,0x4f,0x80,0xc0 }, { 0xc8,0x44,0x8e,0xc9 }, + { 0xeb,0x75,0xa4,0xf6 }, { 0xe6,0x7e,0xaa,0xff }, + { 0xf1,0x63,0xb8,0xe4 }, { 0xfc,0x68,0xb6,0xed }, + { 0x67,0xb1,0x0c,0x0a }, { 0x6a,0xba,0x02,0x03 }, + { 0x7d,0xa7,0x10,0x18 }, { 0x70,0xac,0x1e,0x11 }, + { 0x53,0x9d,0x34,0x2e }, { 0x5e,0x96,0x3a,0x27 }, + { 0x49,0x8b,0x28,0x3c }, { 0x44,0x80,0x26,0x35 }, + { 0x0f,0xe9,0x7c,0x42 }, { 0x02,0xe2,0x72,0x4b }, + { 0x15,0xff,0x60,0x50 }, { 0x18,0xf4,0x6e,0x59 }, + { 0x3b,0xc5,0x44,0x66 }, { 0x36,0xce,0x4a,0x6f }, + { 0x21,0xd3,0x58,0x74 }, { 0x2c,0xd8,0x56,0x7d }, + { 0x0c,0x7a,0x37,0xa1 }, { 0x01,0x71,0x39,0xa8 }, + { 0x16,0x6c,0x2b,0xb3 }, { 0x1b,0x67,0x25,0xba }, + { 0x38,0x56,0x0f,0x85 }, { 0x35,0x5d,0x01,0x8c }, + { 0x22,0x40,0x13,0x97 }, { 0x2f,0x4b,0x1d,0x9e }, + { 0x64,0x22,0x47,0xe9 }, { 0x69,0x29,0x49,0xe0 }, + { 0x7e,0x34,0x5b,0xfb }, { 0x73,0x3f,0x55,0xf2 }, + { 0x50,0x0e,0x7f,0xcd }, { 0x5d,0x05,0x71,0xc4 }, + { 0x4a,0x18,0x63,0xdf }, { 0x47,0x13,0x6d,0xd6 }, + { 0xdc,0xca,0xd7,0x31 }, { 0xd1,0xc1,0xd9,0x38 }, + { 0xc6,0xdc,0xcb,0x23 }, { 0xcb,0xd7,0xc5,0x2a }, + { 0xe8,0xe6,0xef,0x15 }, { 0xe5,0xed,0xe1,0x1c }, + { 0xf2,0xf0,0xf3,0x07 }, { 0xff,0xfb,0xfd,0x0e }, + { 0xb4,0x92,0xa7,0x79 }, { 0xb9,0x99,0xa9,0x70 }, + { 0xae,0x84,0xbb,0x6b }, { 0xa3,0x8f,0xb5,0x62 }, + { 0x80,0xbe,0x9f,0x5d }, { 0x8d,0xb5,0x91,0x54 }, + { 0x9a,0xa8,0x83,0x4f }, { 0x97,0xa3,0x8d,0x46 } +}; + +static const byte U4[256][4] = { + { 0x00,0x00,0x00,0x00 }, { 0x09,0x0d,0x0b,0x0e }, + { 0x12,0x1a,0x16,0x1c }, { 0x1b,0x17,0x1d,0x12 }, + { 0x24,0x34,0x2c,0x38 }, { 0x2d,0x39,0x27,0x36 }, + { 0x36,0x2e,0x3a,0x24 }, { 0x3f,0x23,0x31,0x2a }, + { 0x48,0x68,0x58,0x70 }, { 0x41,0x65,0x53,0x7e }, + { 0x5a,0x72,0x4e,0x6c }, { 0x53,0x7f,0x45,0x62 }, + { 0x6c,0x5c,0x74,0x48 }, { 0x65,0x51,0x7f,0x46 }, + { 0x7e,0x46,0x62,0x54 }, { 0x77,0x4b,0x69,0x5a }, + { 0x90,0xd0,0xb0,0xe0 }, { 0x99,0xdd,0xbb,0xee }, + { 0x82,0xca,0xa6,0xfc }, { 0x8b,0xc7,0xad,0xf2 }, + { 0xb4,0xe4,0x9c,0xd8 }, { 0xbd,0xe9,0x97,0xd6 }, + { 0xa6,0xfe,0x8a,0xc4 }, { 0xaf,0xf3,0x81,0xca }, + { 0xd8,0xb8,0xe8,0x90 }, { 0xd1,0xb5,0xe3,0x9e }, + { 0xca,0xa2,0xfe,0x8c }, { 0xc3,0xaf,0xf5,0x82 }, + { 0xfc,0x8c,0xc4,0xa8 }, { 0xf5,0x81,0xcf,0xa6 }, + { 0xee,0x96,0xd2,0xb4 }, { 0xe7,0x9b,0xd9,0xba }, + { 0x3b,0xbb,0x7b,0xdb }, { 0x32,0xb6,0x70,0xd5 }, + { 0x29,0xa1,0x6d,0xc7 }, { 0x20,0xac,0x66,0xc9 }, + { 0x1f,0x8f,0x57,0xe3 }, { 0x16,0x82,0x5c,0xed }, + { 0x0d,0x95,0x41,0xff }, { 0x04,0x98,0x4a,0xf1 }, + { 0x73,0xd3,0x23,0xab }, { 0x7a,0xde,0x28,0xa5 }, + { 0x61,0xc9,0x35,0xb7 }, { 0x68,0xc4,0x3e,0xb9 }, + { 0x57,0xe7,0x0f,0x93 }, { 0x5e,0xea,0x04,0x9d }, + { 0x45,0xfd,0x19,0x8f }, { 0x4c,0xf0,0x12,0x81 }, + { 0xab,0x6b,0xcb,0x3b }, { 0xa2,0x66,0xc0,0x35 }, + { 0xb9,0x71,0xdd,0x27 }, { 0xb0,0x7c,0xd6,0x29 }, + { 0x8f,0x5f,0xe7,0x03 }, { 0x86,0x52,0xec,0x0d }, + { 0x9d,0x45,0xf1,0x1f }, { 0x94,0x48,0xfa,0x11 }, + { 0xe3,0x03,0x93,0x4b }, { 0xea,0x0e,0x98,0x45 }, + { 0xf1,0x19,0x85,0x57 }, { 0xf8,0x14,0x8e,0x59 }, + { 0xc7,0x37,0xbf,0x73 }, { 0xce,0x3a,0xb4,0x7d }, + { 0xd5,0x2d,0xa9,0x6f }, { 0xdc,0x20,0xa2,0x61 }, + { 0x76,0x6d,0xf6,0xad }, { 0x7f,0x60,0xfd,0xa3 }, + { 0x64,0x77,0xe0,0xb1 }, { 0x6d,0x7a,0xeb,0xbf }, + { 0x52,0x59,0xda,0x95 }, { 0x5b,0x54,0xd1,0x9b }, + { 0x40,0x43,0xcc,0x89 }, { 0x49,0x4e,0xc7,0x87 }, + { 0x3e,0x05,0xae,0xdd }, { 0x37,0x08,0xa5,0xd3 }, + { 0x2c,0x1f,0xb8,0xc1 }, { 0x25,0x12,0xb3,0xcf }, + { 0x1a,0x31,0x82,0xe5 }, { 0x13,0x3c,0x89,0xeb }, + { 0x08,0x2b,0x94,0xf9 }, { 0x01,0x26,0x9f,0xf7 }, + { 0xe6,0xbd,0x46,0x4d }, { 0xef,0xb0,0x4d,0x43 }, + { 0xf4,0xa7,0x50,0x51 }, { 0xfd,0xaa,0x5b,0x5f }, + { 0xc2,0x89,0x6a,0x75 }, { 0xcb,0x84,0x61,0x7b }, + { 0xd0,0x93,0x7c,0x69 }, { 0xd9,0x9e,0x77,0x67 }, + { 0xae,0xd5,0x1e,0x3d }, { 0xa7,0xd8,0x15,0x33 }, + { 0xbc,0xcf,0x08,0x21 }, { 0xb5,0xc2,0x03,0x2f }, + { 0x8a,0xe1,0x32,0x05 }, { 0x83,0xec,0x39,0x0b }, + { 0x98,0xfb,0x24,0x19 }, { 0x91,0xf6,0x2f,0x17 }, + { 0x4d,0xd6,0x8d,0x76 }, { 0x44,0xdb,0x86,0x78 }, + { 0x5f,0xcc,0x9b,0x6a }, { 0x56,0xc1,0x90,0x64 }, + { 0x69,0xe2,0xa1,0x4e }, { 0x60,0xef,0xaa,0x40 }, + { 0x7b,0xf8,0xb7,0x52 }, { 0x72,0xf5,0xbc,0x5c }, + { 0x05,0xbe,0xd5,0x06 }, { 0x0c,0xb3,0xde,0x08 }, + { 0x17,0xa4,0xc3,0x1a }, { 0x1e,0xa9,0xc8,0x14 }, + { 0x21,0x8a,0xf9,0x3e }, { 0x28,0x87,0xf2,0x30 }, + { 0x33,0x90,0xef,0x22 }, { 0x3a,0x9d,0xe4,0x2c }, + { 0xdd,0x06,0x3d,0x96 }, { 0xd4,0x0b,0x36,0x98 }, + { 0xcf,0x1c,0x2b,0x8a }, { 0xc6,0x11,0x20,0x84 }, + { 0xf9,0x32,0x11,0xae }, { 0xf0,0x3f,0x1a,0xa0 }, + { 0xeb,0x28,0x07,0xb2 }, { 0xe2,0x25,0x0c,0xbc }, + { 0x95,0x6e,0x65,0xe6 }, { 0x9c,0x63,0x6e,0xe8 }, + { 0x87,0x74,0x73,0xfa }, { 0x8e,0x79,0x78,0xf4 }, + { 0xb1,0x5a,0x49,0xde }, { 0xb8,0x57,0x42,0xd0 }, + { 0xa3,0x40,0x5f,0xc2 }, { 0xaa,0x4d,0x54,0xcc }, + { 0xec,0xda,0xf7,0x41 }, { 0xe5,0xd7,0xfc,0x4f }, + { 0xfe,0xc0,0xe1,0x5d }, { 0xf7,0xcd,0xea,0x53 }, + { 0xc8,0xee,0xdb,0x79 }, { 0xc1,0xe3,0xd0,0x77 }, + { 0xda,0xf4,0xcd,0x65 }, { 0xd3,0xf9,0xc6,0x6b }, + { 0xa4,0xb2,0xaf,0x31 }, { 0xad,0xbf,0xa4,0x3f }, + { 0xb6,0xa8,0xb9,0x2d }, { 0xbf,0xa5,0xb2,0x23 }, + { 0x80,0x86,0x83,0x09 }, { 0x89,0x8b,0x88,0x07 }, + { 0x92,0x9c,0x95,0x15 }, { 0x9b,0x91,0x9e,0x1b }, + { 0x7c,0x0a,0x47,0xa1 }, { 0x75,0x07,0x4c,0xaf }, + { 0x6e,0x10,0x51,0xbd }, { 0x67,0x1d,0x5a,0xb3 }, + { 0x58,0x3e,0x6b,0x99 }, { 0x51,0x33,0x60,0x97 }, + { 0x4a,0x24,0x7d,0x85 }, { 0x43,0x29,0x76,0x8b }, + { 0x34,0x62,0x1f,0xd1 }, { 0x3d,0x6f,0x14,0xdf }, + { 0x26,0x78,0x09,0xcd }, { 0x2f,0x75,0x02,0xc3 }, + { 0x10,0x56,0x33,0xe9 }, { 0x19,0x5b,0x38,0xe7 }, + { 0x02,0x4c,0x25,0xf5 }, { 0x0b,0x41,0x2e,0xfb }, + { 0xd7,0x61,0x8c,0x9a }, { 0xde,0x6c,0x87,0x94 }, + { 0xc5,0x7b,0x9a,0x86 }, { 0xcc,0x76,0x91,0x88 }, + { 0xf3,0x55,0xa0,0xa2 }, { 0xfa,0x58,0xab,0xac }, + { 0xe1,0x4f,0xb6,0xbe }, { 0xe8,0x42,0xbd,0xb0 }, + { 0x9f,0x09,0xd4,0xea }, { 0x96,0x04,0xdf,0xe4 }, + { 0x8d,0x13,0xc2,0xf6 }, { 0x84,0x1e,0xc9,0xf8 }, + { 0xbb,0x3d,0xf8,0xd2 }, { 0xb2,0x30,0xf3,0xdc }, + { 0xa9,0x27,0xee,0xce }, { 0xa0,0x2a,0xe5,0xc0 }, + { 0x47,0xb1,0x3c,0x7a }, { 0x4e,0xbc,0x37,0x74 }, + { 0x55,0xab,0x2a,0x66 }, { 0x5c,0xa6,0x21,0x68 }, + { 0x63,0x85,0x10,0x42 }, { 0x6a,0x88,0x1b,0x4c }, + { 0x71,0x9f,0x06,0x5e }, { 0x78,0x92,0x0d,0x50 }, + { 0x0f,0xd9,0x64,0x0a }, { 0x06,0xd4,0x6f,0x04 }, + { 0x1d,0xc3,0x72,0x16 }, { 0x14,0xce,0x79,0x18 }, + { 0x2b,0xed,0x48,0x32 }, { 0x22,0xe0,0x43,0x3c }, + { 0x39,0xf7,0x5e,0x2e }, { 0x30,0xfa,0x55,0x20 }, + { 0x9a,0xb7,0x01,0xec }, { 0x93,0xba,0x0a,0xe2 }, + { 0x88,0xad,0x17,0xf0 }, { 0x81,0xa0,0x1c,0xfe }, + { 0xbe,0x83,0x2d,0xd4 }, { 0xb7,0x8e,0x26,0xda }, + { 0xac,0x99,0x3b,0xc8 }, { 0xa5,0x94,0x30,0xc6 }, + { 0xd2,0xdf,0x59,0x9c }, { 0xdb,0xd2,0x52,0x92 }, + { 0xc0,0xc5,0x4f,0x80 }, { 0xc9,0xc8,0x44,0x8e }, + { 0xf6,0xeb,0x75,0xa4 }, { 0xff,0xe6,0x7e,0xaa }, + { 0xe4,0xf1,0x63,0xb8 }, { 0xed,0xfc,0x68,0xb6 }, + { 0x0a,0x67,0xb1,0x0c }, { 0x03,0x6a,0xba,0x02 }, + { 0x18,0x7d,0xa7,0x10 }, { 0x11,0x70,0xac,0x1e }, + { 0x2e,0x53,0x9d,0x34 }, { 0x27,0x5e,0x96,0x3a }, + { 0x3c,0x49,0x8b,0x28 }, { 0x35,0x44,0x80,0x26 }, + { 0x42,0x0f,0xe9,0x7c }, { 0x4b,0x02,0xe2,0x72 }, + { 0x50,0x15,0xff,0x60 }, { 0x59,0x18,0xf4,0x6e }, + { 0x66,0x3b,0xc5,0x44 }, { 0x6f,0x36,0xce,0x4a }, + { 0x74,0x21,0xd3,0x58 }, { 0x7d,0x2c,0xd8,0x56 }, + { 0xa1,0x0c,0x7a,0x37 }, { 0xa8,0x01,0x71,0x39 }, + { 0xb3,0x16,0x6c,0x2b }, { 0xba,0x1b,0x67,0x25 }, + { 0x85,0x38,0x56,0x0f }, { 0x8c,0x35,0x5d,0x01 }, + { 0x97,0x22,0x40,0x13 }, { 0x9e,0x2f,0x4b,0x1d }, + { 0xe9,0x64,0x22,0x47 }, { 0xe0,0x69,0x29,0x49 }, + { 0xfb,0x7e,0x34,0x5b }, { 0xf2,0x73,0x3f,0x55 }, + { 0xcd,0x50,0x0e,0x7f }, { 0xc4,0x5d,0x05,0x71 }, + { 0xdf,0x4a,0x18,0x63 }, { 0xd6,0x47,0x13,0x6d }, + { 0x31,0xdc,0xca,0xd7 }, { 0x38,0xd1,0xc1,0xd9 }, + { 0x23,0xc6,0xdc,0xcb }, { 0x2a,0xcb,0xd7,0xc5 }, + { 0x15,0xe8,0xe6,0xef }, { 0x1c,0xe5,0xed,0xe1 }, + { 0x07,0xf2,0xf0,0xf3 }, { 0x0e,0xff,0xfb,0xfd }, + { 0x79,0xb4,0x92,0xa7 }, { 0x70,0xb9,0x99,0xa9 }, + { 0x6b,0xae,0x84,0xbb }, { 0x62,0xa3,0x8f,0xb5 }, + { 0x5d,0x80,0xbe,0x9f }, { 0x54,0x8d,0xb5,0x91 }, + { 0x4f,0x9a,0xa8,0x83 }, { 0x46,0x97,0xa3,0x8d } +}; + +static const u32 rcon[30] = { + 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, + 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, + 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91 +}; + + + +static void +burn_stack (int bytes) +{ + char buf[64]; + + memset (buf, 0, sizeof buf); + bytes -= sizeof buf; + if (bytes > 0) + burn_stack (bytes); +} + + +/* Perform the key setup. + */ +static int +do_setkey (RIJNDAEL_context *ctx, const byte *key, const unsigned keylen) +{ + static int initialized = 0; + static const char *selftest_failed=0; + int ROUNDS; + byte k[MAXKC][4]; + int i,j, r, t, rconpointer = 0; + byte tk[MAXKC][4]; + int KC; + /* space for automatic variables is about 64 + 11*int */ + + if (!initialized) { + initialized = 1; + selftest_failed = selftest (); + if( selftest_failed ) + fprintf(stderr, "%s\n", selftest_failed ); + } + if( selftest_failed ) + return G10ERR_SELFTEST_FAILED; + + if( keylen == 128/8 ) { + ROUNDS = 10; + KC = 4; + } + else if ( keylen == 192/8 ) { + ROUNDS = 12; + KC = 6; + } + else if ( keylen == 256/8 ) { + ROUNDS = 14; + KC = 8; + } + else + return G10ERR_WRONG_KEYLEN; + + ctx->ROUNDS = ROUNDS; + ctx->decryption_prepared = 0; + + for (i = 0; i < keylen; i++) { + k[i >> 2][i & 3] = key[i]; + } + #define W (ctx->keySched) + + for (j = KC-1; j >= 0; j--) { + *((u32*)tk[j]) = *((u32*)k[j]); + } + r = 0; + t = 0; + /* copy values into round key array */ + for (j = 0; (j < KC) && (r < ROUNDS + 1); ) { + for (; (j < KC) && (t < 4); j++, t++) { + *((u32*)W[r][t]) = *((u32*)tk[j]); + } + if (t == 4) { + r++; + t = 0; + } + } + + while (r < ROUNDS + 1) { + /* while not enough round key material calculated */ + /* calculate new values */ + tk[0][0] ^= S[tk[KC-1][1]]; + tk[0][1] ^= S[tk[KC-1][2]]; + tk[0][2] ^= S[tk[KC-1][3]]; + tk[0][3] ^= S[tk[KC-1][0]]; + tk[0][0] ^= rcon[rconpointer++]; + + if (KC != 8) { + for (j = 1; j < KC; j++) { + *((u32*)tk[j]) ^= *((u32*)tk[j-1]); + } + } else { + for (j = 1; j < KC/2; j++) { + *((u32*)tk[j]) ^= *((u32*)tk[j-1]); + } + tk[KC/2][0] ^= S[tk[KC/2 - 1][0]]; + tk[KC/2][1] ^= S[tk[KC/2 - 1][1]]; + tk[KC/2][2] ^= S[tk[KC/2 - 1][2]]; + tk[KC/2][3] ^= S[tk[KC/2 - 1][3]]; + for (j = KC/2 + 1; j < KC; j++) { + *((u32*)tk[j]) ^= *((u32*)tk[j-1]); + } + } + /* copy values into round key array */ + for (j = 0; (j < KC) && (r < ROUNDS + 1); ) { + for (; (j < KC) && (t < 4); j++, t++) { + *((u32*)W[r][t]) = *((u32*)tk[j]); + } + if (t == 4) { + r++; + t = 0; + } + } + } + + #undef W + return 0; +} + +static int +rijndael_setkey (RIJNDAEL_context *ctx, const byte *key, const unsigned keylen) +{ + int rc = do_setkey (ctx, key, keylen); + burn_stack ( 100 + 16*sizeof(int)); + return rc; +} + +/* make a decryption key from an encryption key */ +static void +prepare_decryption( RIJNDAEL_context *ctx ) +{ + int r; + byte *w; + + for (r=0; r < MAXROUNDS+1; r++ ) { + *((u32*)ctx->keySched2[r][0]) = *((u32*)ctx->keySched[r][0]); + *((u32*)ctx->keySched2[r][1]) = *((u32*)ctx->keySched[r][1]); + *((u32*)ctx->keySched2[r][2]) = *((u32*)ctx->keySched[r][2]); + *((u32*)ctx->keySched2[r][3]) = *((u32*)ctx->keySched[r][3]); + } + #define W (ctx->keySched2) + for (r = 1; r < ctx->ROUNDS; r++) { + w = W[r][0]; + *((u32*)w) = *((u32*)U1[w[0]]) ^ *((u32*)U2[w[1]]) + ^ *((u32*)U3[w[2]]) ^ *((u32*)U4[w[3]]); + + w = W[r][1]; + *((u32*)w) = *((u32*)U1[w[0]]) ^ *((u32*)U2[w[1]]) + ^ *((u32*)U3[w[2]]) ^ *((u32*)U4[w[3]]); + + w = W[r][2]; + *((u32*)w) = *((u32*)U1[w[0]]) ^ *((u32*)U2[w[1]]) + ^ *((u32*)U3[w[2]]) ^ *((u32*)U4[w[3]]); + + w = W[r][3]; + *((u32*)w) = *((u32*)U1[w[0]]) ^ *((u32*)U2[w[1]]) + ^ *((u32*)U3[w[2]]) ^ *((u32*)U4[w[3]]); + } + #undef W +} + + + +/* Encrypt one block. A and B may be the same. */ +static void +do_encrypt (const RIJNDAEL_context *ctx, byte *b, const byte *a) +{ + int r; + byte temp[4][4]; + int ROUNDS = ctx->ROUNDS; + #define rk (ctx->keySched) + + *((u32*)temp[0]) = *((u32*)(a )) ^ *((u32*)rk[0][0]); + *((u32*)temp[1]) = *((u32*)(a+ 4)) ^ *((u32*)rk[0][1]); + *((u32*)temp[2]) = *((u32*)(a+ 8)) ^ *((u32*)rk[0][2]); + *((u32*)temp[3]) = *((u32*)(a+12)) ^ *((u32*)rk[0][3]); + *((u32*)(b )) = *((u32*)T1[temp[0][0]]) + ^ *((u32*)T2[temp[1][1]]) + ^ *((u32*)T3[temp[2][2]]) + ^ *((u32*)T4[temp[3][3]]); + *((u32*)(b + 4)) = *((u32*)T1[temp[1][0]]) + ^ *((u32*)T2[temp[2][1]]) + ^ *((u32*)T3[temp[3][2]]) + ^ *((u32*)T4[temp[0][3]]); + *((u32*)(b + 8)) = *((u32*)T1[temp[2][0]]) + ^ *((u32*)T2[temp[3][1]]) + ^ *((u32*)T3[temp[0][2]]) + ^ *((u32*)T4[temp[1][3]]); + *((u32*)(b +12)) = *((u32*)T1[temp[3][0]]) + ^ *((u32*)T2[temp[0][1]]) + ^ *((u32*)T3[temp[1][2]]) + ^ *((u32*)T4[temp[2][3]]); + for (r = 1; r < ROUNDS-1; r++) { + *((u32*)temp[0]) = *((u32*)(b )) ^ *((u32*)rk[r][0]); + *((u32*)temp[1]) = *((u32*)(b+ 4)) ^ *((u32*)rk[r][1]); + *((u32*)temp[2]) = *((u32*)(b+ 8)) ^ *((u32*)rk[r][2]); + *((u32*)temp[3]) = *((u32*)(b+12)) ^ *((u32*)rk[r][3]); + + *((u32*)(b )) = *((u32*)T1[temp[0][0]]) + ^ *((u32*)T2[temp[1][1]]) + ^ *((u32*)T3[temp[2][2]]) + ^ *((u32*)T4[temp[3][3]]); + *((u32*)(b + 4)) = *((u32*)T1[temp[1][0]]) + ^ *((u32*)T2[temp[2][1]]) + ^ *((u32*)T3[temp[3][2]]) + ^ *((u32*)T4[temp[0][3]]); + *((u32*)(b + 8)) = *((u32*)T1[temp[2][0]]) + ^ *((u32*)T2[temp[3][1]]) + ^ *((u32*)T3[temp[0][2]]) + ^ *((u32*)T4[temp[1][3]]); + *((u32*)(b +12)) = *((u32*)T1[temp[3][0]]) + ^ *((u32*)T2[temp[0][1]]) + ^ *((u32*)T3[temp[1][2]]) + ^ *((u32*)T4[temp[2][3]]); + } + /* last round is special */ + *((u32*)temp[0]) = *((u32*)(b )) ^ *((u32*)rk[ROUNDS-1][0]); + *((u32*)temp[1]) = *((u32*)(b+ 4)) ^ *((u32*)rk[ROUNDS-1][1]); + *((u32*)temp[2]) = *((u32*)(b+ 8)) ^ *((u32*)rk[ROUNDS-1][2]); + *((u32*)temp[3]) = *((u32*)(b+12)) ^ *((u32*)rk[ROUNDS-1][3]); + b[ 0] = T1[temp[0][0]][1]; + b[ 1] = T1[temp[1][1]][1]; + b[ 2] = T1[temp[2][2]][1]; + b[ 3] = T1[temp[3][3]][1]; + b[ 4] = T1[temp[1][0]][1]; + b[ 5] = T1[temp[2][1]][1]; + b[ 6] = T1[temp[3][2]][1]; + b[ 7] = T1[temp[0][3]][1]; + b[ 8] = T1[temp[2][0]][1]; + b[ 9] = T1[temp[3][1]][1]; + b[10] = T1[temp[0][2]][1]; + b[11] = T1[temp[1][3]][1]; + b[12] = T1[temp[3][0]][1]; + b[13] = T1[temp[0][1]][1]; + b[14] = T1[temp[1][2]][1]; + b[15] = T1[temp[2][3]][1]; + *((u32*)(b )) ^= *((u32*)rk[ROUNDS][0]); + *((u32*)(b+ 4)) ^= *((u32*)rk[ROUNDS][1]); + *((u32*)(b+ 8)) ^= *((u32*)rk[ROUNDS][2]); + *((u32*)(b+12)) ^= *((u32*)rk[ROUNDS][3]); + #undef rk +} + +static void +rijndael_encrypt (const RIJNDAEL_context *ctx, byte *b, const byte *a) +{ + do_encrypt (ctx, b, a); + burn_stack (16 + 2*sizeof(int)); +} + + +/* Decrypt one block. a and b may be the same. */ +static void +do_decrypt (RIJNDAEL_context *ctx, byte *b, const byte *a) +{ + #define rk (ctx->keySched2) + int ROUNDS = ctx->ROUNDS; + int r; + byte temp[4][4]; + + if ( !ctx->decryption_prepared ) { + prepare_decryption ( ctx ); + burn_stack (64); + ctx->decryption_prepared = 1; + } + + *((u32*)temp[0]) = *((u32*)(a )) ^ *((u32*)rk[ROUNDS][0]); + *((u32*)temp[1]) = *((u32*)(a+ 4)) ^ *((u32*)rk[ROUNDS][1]); + *((u32*)temp[2]) = *((u32*)(a+ 8)) ^ *((u32*)rk[ROUNDS][2]); + *((u32*)temp[3]) = *((u32*)(a+12)) ^ *((u32*)rk[ROUNDS][3]); + + *((u32*)(b )) = *((u32*)T5[temp[0][0]]) + ^ *((u32*)T6[temp[3][1]]) + ^ *((u32*)T7[temp[2][2]]) + ^ *((u32*)T8[temp[1][3]]); + *((u32*)(b+ 4)) = *((u32*)T5[temp[1][0]]) + ^ *((u32*)T6[temp[0][1]]) + ^ *((u32*)T7[temp[3][2]]) + ^ *((u32*)T8[temp[2][3]]); + *((u32*)(b+ 8)) = *((u32*)T5[temp[2][0]]) + ^ *((u32*)T6[temp[1][1]]) + ^ *((u32*)T7[temp[0][2]]) + ^ *((u32*)T8[temp[3][3]]); + *((u32*)(b+12)) = *((u32*)T5[temp[3][0]]) + ^ *((u32*)T6[temp[2][1]]) + ^ *((u32*)T7[temp[1][2]]) + ^ *((u32*)T8[temp[0][3]]); + for (r = ROUNDS-1; r > 1; r--) { + *((u32*)temp[0]) = *((u32*)(b )) ^ *((u32*)rk[r][0]); + *((u32*)temp[1]) = *((u32*)(b+ 4)) ^ *((u32*)rk[r][1]); + *((u32*)temp[2]) = *((u32*)(b+ 8)) ^ *((u32*)rk[r][2]); + *((u32*)temp[3]) = *((u32*)(b+12)) ^ *((u32*)rk[r][3]); + *((u32*)(b )) = *((u32*)T5[temp[0][0]]) + ^ *((u32*)T6[temp[3][1]]) + ^ *((u32*)T7[temp[2][2]]) + ^ *((u32*)T8[temp[1][3]]); + *((u32*)(b+ 4)) = *((u32*)T5[temp[1][0]]) + ^ *((u32*)T6[temp[0][1]]) + ^ *((u32*)T7[temp[3][2]]) + ^ *((u32*)T8[temp[2][3]]); + *((u32*)(b+ 8)) = *((u32*)T5[temp[2][0]]) + ^ *((u32*)T6[temp[1][1]]) + ^ *((u32*)T7[temp[0][2]]) + ^ *((u32*)T8[temp[3][3]]); + *((u32*)(b+12)) = *((u32*)T5[temp[3][0]]) + ^ *((u32*)T6[temp[2][1]]) + ^ *((u32*)T7[temp[1][2]]) + ^ *((u32*)T8[temp[0][3]]); + } + /* last round is special */ + *((u32*)temp[0]) = *((u32*)(b )) ^ *((u32*)rk[1][0]); + *((u32*)temp[1]) = *((u32*)(b+ 4)) ^ *((u32*)rk[1][1]); + *((u32*)temp[2]) = *((u32*)(b+ 8)) ^ *((u32*)rk[1][2]); + *((u32*)temp[3]) = *((u32*)(b+12)) ^ *((u32*)rk[1][3]); + b[ 0] = S5[temp[0][0]]; + b[ 1] = S5[temp[3][1]]; + b[ 2] = S5[temp[2][2]]; + b[ 3] = S5[temp[1][3]]; + b[ 4] = S5[temp[1][0]]; + b[ 5] = S5[temp[0][1]]; + b[ 6] = S5[temp[3][2]]; + b[ 7] = S5[temp[2][3]]; + b[ 8] = S5[temp[2][0]]; + b[ 9] = S5[temp[1][1]]; + b[10] = S5[temp[0][2]]; + b[11] = S5[temp[3][3]]; + b[12] = S5[temp[3][0]]; + b[13] = S5[temp[2][1]]; + b[14] = S5[temp[1][2]]; + b[15] = S5[temp[0][3]]; + *((u32*)(b )) ^= *((u32*)rk[0][0]); + *((u32*)(b+ 4)) ^= *((u32*)rk[0][1]); + *((u32*)(b+ 8)) ^= *((u32*)rk[0][2]); + *((u32*)(b+12)) ^= *((u32*)rk[0][3]); + #undef rk +} + +static void +rijndael_decrypt (RIJNDAEL_context *ctx, byte *b, const byte *a) +{ + do_decrypt (ctx, b, a); + burn_stack (16+2*sizeof(int)); +} + +/* Test a single encryption and decryption with each key size. */ + +static const char* +selftest (void) +{ + RIJNDAEL_context ctx; + byte scratch[16]; + + /* The test vectors are from the AES supplied ones; more or less + * randomly taken from ecb_tbl.txt (I=42,81,14) + */ + static const byte plaintext[16] = { + 0x01,0x4B,0xAF,0x22,0x78,0xA6,0x9D,0x33, + 0x1D,0x51,0x80,0x10,0x36,0x43,0xE9,0x9A + }; + static const byte key[16] = { + 0xE8,0xE9,0xEA,0xEB,0xED,0xEE,0xEF,0xF0, + 0xF2,0xF3,0xF4,0xF5,0xF7,0xF8,0xF9,0xFA + }; + static const byte ciphertext[16] = { + 0x67,0x43,0xC3,0xD1,0x51,0x9A,0xB4,0xF2, + 0xCD,0x9A,0x78,0xAB,0x09,0xA5,0x11,0xBD + }; + + static const byte plaintext_192[16] = { + 0x76,0x77,0x74,0x75,0xF1,0xF2,0xF3,0xF4, + 0xF8,0xF9,0xE6,0xE7,0x77,0x70,0x71,0x72 + }; + static const byte key_192[24] = { + 0x04,0x05,0x06,0x07,0x09,0x0A,0x0B,0x0C, + 0x0E,0x0F,0x10,0x11,0x13,0x14,0x15,0x16, + 0x18,0x19,0x1A,0x1B,0x1D,0x1E,0x1F,0x20 + }; + static const byte ciphertext_192[16] = { + 0x5D,0x1E,0xF2,0x0D,0xCE,0xD6,0xBC,0xBC, + 0x12,0x13,0x1A,0xC7,0xC5,0x47,0x88,0xAA + }; + + static const byte plaintext_256[16] = { + 0x06,0x9A,0x00,0x7F,0xC7,0x6A,0x45,0x9F, + 0x98,0xBA,0xF9,0x17,0xFE,0xDF,0x95,0x21 + }; + static const byte key_256[32] = { + 0x08,0x09,0x0A,0x0B,0x0D,0x0E,0x0F,0x10, + 0x12,0x13,0x14,0x15,0x17,0x18,0x19,0x1A, + 0x1C,0x1D,0x1E,0x1F,0x21,0x22,0x23,0x24, + 0x26,0x27,0x28,0x29,0x2B,0x2C,0x2D,0x2E + }; + static const byte ciphertext_256[16] = { + 0x08,0x0E,0x95,0x17,0xEB,0x16,0x77,0x71, + 0x9A,0xCF,0x72,0x80,0x86,0x04,0x0A,0xE3 + }; + + rijndael_setkey (&ctx, key, sizeof(key)); + rijndael_encrypt (&ctx, scratch, plaintext); + if (memcmp (scratch, ciphertext, sizeof (ciphertext))) + return "Rijndael-128 test encryption failed."; + rijndael_decrypt (&ctx, scratch, scratch); + if (memcmp (scratch, plaintext, sizeof (plaintext))) + return "Rijndael-128 test decryption failed."; + + rijndael_setkey (&ctx, key_192, sizeof(key_192)); + rijndael_encrypt (&ctx, scratch, plaintext_192); + if (memcmp (scratch, ciphertext_192, sizeof (ciphertext_192))) + return "Rijndael-192 test encryption failed."; + rijndael_decrypt (&ctx, scratch, scratch); + if (memcmp (scratch, plaintext_192, sizeof (plaintext_192))) + return "Rijndael-192 test decryption failed."; + + rijndael_setkey (&ctx, key_256, sizeof(key_256)); + rijndael_encrypt (&ctx, scratch, plaintext_256); + if (memcmp (scratch, ciphertext_256, sizeof (ciphertext_256))) + return "Rijndael-256 test encryption failed."; + rijndael_decrypt (&ctx, scratch, scratch); + if (memcmp (scratch, plaintext_256, sizeof (plaintext_256))) + return "Rijndael-256 test decryption failed."; + + return NULL; +} + +#ifdef IS_MODULE +static +#endif + const char * +rijndael_get_info (int algo, size_t *keylen, + size_t *blocksize, size_t *contextsize, + int (**r_setkey) (void *c, byte *key, unsigned keylen), + void (**r_encrypt) (void *c, byte *outbuf, byte *inbuf), + void (**r_decrypt) (void *c, byte *outbuf, byte *inbuf) + ) +{ + *keylen = algo==7? 128 : algo==8? 192 : 256; + *blocksize = 16; + *contextsize = sizeof (RIJNDAEL_context); + + *(int (**)(RIJNDAEL_context*, const byte*, const unsigned))r_setkey + = rijndael_setkey; + *(void (**)(const RIJNDAEL_context*, byte*, const byte*))r_encrypt + = rijndael_encrypt; + *(void (**)(RIJNDAEL_context*, byte*, const byte*))r_decrypt + = rijndael_decrypt; + + if( algo == 7 ) + return "AES"; + if (algo == 8) + return "AES192"; + if (algo == 9) + return "AES256"; + return NULL; +} + + +#ifdef IS_MODULE +static +const char * const gnupgext_version = "RIJNDAEL ($Revision$)"; + +static struct { + int class; + int version; + int value; + void (*func)(void); +} func_table[] = { + { 20, 1, 0, (void(*)(void))rijndael_get_info }, + { 21, 1, 7 }, + { 21, 1, 8 }, + { 21, 1, 9 }, +}; + + + +/**************** + * Enumerate the names of the functions together with information about + * this function. Set sequence to an integer with a initial value of 0 and + * do not change it. + * If what is 0 all kind of functions are returned. + * Return values: class := class of function: + * 10 = message digest algorithm info function + * 11 = integer with available md algorithms + * 20 = cipher algorithm info function + * 21 = integer with available cipher algorithms + * 30 = public key algorithm info function + * 31 = integer with available pubkey algorithms + * version = interface version of the function/pointer + * (currently this is 1 for all functions) + */ +static +void * +gnupgext_enum_func ( int what, int *sequence, int *class, int *vers ) +{ + void *ret; + int i = *sequence; + + do { + if ( i >= DIM(func_table) || i < 0 ) { + return NULL; + } + *class = func_table[i].class; + *vers = func_table[i].version; + switch( *class ) { + case 11: + case 21: + case 31: + ret = &func_table[i].value; + break; + default: + ret = func_table[i].func; + break; + } + i++; + } while ( what && what != *class ); + + *sequence = i; + return ret; +} +#endif + + + + + + + + + diff --git a/cipher/rmd.h b/cipher/rmd.h new file mode 100644 index 000000000..917e04a26 --- /dev/null +++ b/cipher/rmd.h @@ -0,0 +1,35 @@ +/* rmd.h - RIPE-MD hash functions + * Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ +#ifndef G10_RMD_H +#define G10_RMD_H + + +/* we need this here because random.c must have direct access */ +typedef struct { + u32 h0,h1,h2,h3,h4; + u32 nblocks; + byte buf[64]; + int count; +} RMD160_CONTEXT; + +void rmd160_init( RMD160_CONTEXT *hd ); +void rmd160_mixblock( RMD160_CONTEXT *hd, char *buffer ); + +#endif /*G10_RMD_H*/ diff --git a/cipher/rmd160.c b/cipher/rmd160.c new file mode 100644 index 000000000..e35647af6 --- /dev/null +++ b/cipher/rmd160.c @@ -0,0 +1,652 @@ +/* rmd160.c - RIPE-MD160 + * Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + +#include <config.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include "util.h" +#include "memory.h" +#include "rmd.h" +#include "cipher.h" /* only used for the rmd160_hash_buffer() prototype */ +#include "dynload.h" + +#include "bithelp.h" + +/********************************* + * RIPEMD-160 is not patented, see (as of 25.10.97) + * http://www.esat.kuleuven.ac.be/~bosselae/ripemd160.html + * Note that the code uses Little Endian byteorder, which is good for + * 386 etc, but we must add some conversion when used on a big endian box. + * + * + * Pseudo-code for RIPEMD-160 + * + * RIPEMD-160 is an iterative hash function that operates on 32-bit words. + * The round function takes as input a 5-word chaining variable and a 16-word + * message block and maps this to a new chaining variable. All operations are + * defined on 32-bit words. Padding is identical to that of MD4. + * + * + * RIPEMD-160: definitions + * + * + * nonlinear functions at bit level: exor, mux, -, mux, - + * + * f(j, x, y, z) = x XOR y XOR z (0 <= j <= 15) + * f(j, x, y, z) = (x AND y) OR (NOT(x) AND z) (16 <= j <= 31) + * f(j, x, y, z) = (x OR NOT(y)) XOR z (32 <= j <= 47) + * f(j, x, y, z) = (x AND z) OR (y AND NOT(z)) (48 <= j <= 63) + * f(j, x, y, z) = x XOR (y OR NOT(z)) (64 <= j <= 79) + * + * + * added constants (hexadecimal) + * + * K(j) = 0x00000000 (0 <= j <= 15) + * K(j) = 0x5A827999 (16 <= j <= 31) int(2**30 x sqrt(2)) + * K(j) = 0x6ED9EBA1 (32 <= j <= 47) int(2**30 x sqrt(3)) + * K(j) = 0x8F1BBCDC (48 <= j <= 63) int(2**30 x sqrt(5)) + * K(j) = 0xA953FD4E (64 <= j <= 79) int(2**30 x sqrt(7)) + * K'(j) = 0x50A28BE6 (0 <= j <= 15) int(2**30 x cbrt(2)) + * K'(j) = 0x5C4DD124 (16 <= j <= 31) int(2**30 x cbrt(3)) + * K'(j) = 0x6D703EF3 (32 <= j <= 47) int(2**30 x cbrt(5)) + * K'(j) = 0x7A6D76E9 (48 <= j <= 63) int(2**30 x cbrt(7)) + * K'(j) = 0x00000000 (64 <= j <= 79) + * + * + * selection of message word + * + * r(j) = j (0 <= j <= 15) + * r(16..31) = 7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8 + * r(32..47) = 3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12 + * r(48..63) = 1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2 + * r(64..79) = 4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13 + * r0(0..15) = 5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12 + * r0(16..31)= 6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2 + * r0(32..47)= 15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13 + * r0(48..63)= 8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14 + * r0(64..79)= 12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11 + * + * + * amount for rotate left (rol) + * + * s(0..15) = 11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8 + * s(16..31) = 7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12 + * s(32..47) = 11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5 + * s(48..63) = 11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12 + * s(64..79) = 9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6 + * s'(0..15) = 8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6 + * s'(16..31)= 9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11 + * s'(32..47)= 9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5 + * s'(48..63)= 15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8 + * s'(64..79)= 8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11 + * + * + * initial value (hexadecimal) + * + * h0 = 0x67452301; h1 = 0xEFCDAB89; h2 = 0x98BADCFE; h3 = 0x10325476; + * h4 = 0xC3D2E1F0; + * + * + * RIPEMD-160: pseudo-code + * + * It is assumed that the message after padding consists of t 16-word blocks + * that will be denoted with X[i][j], with 0 <= i <= t-1 and 0 <= j <= 15. + * The symbol [+] denotes addition modulo 2**32 and rol_s denotes cyclic left + * shift (rotate) over s positions. + * + * + * for i := 0 to t-1 { + * A := h0; B := h1; C := h2; D = h3; E = h4; + * A' := h0; B' := h1; C' := h2; D' = h3; E' = h4; + * for j := 0 to 79 { + * T := rol_s(j)(A [+] f(j, B, C, D) [+] X[i][r(j)] [+] K(j)) [+] E; + * A := E; E := D; D := rol_10(C); C := B; B := T; + * T := rol_s'(j)(A' [+] f(79-j, B', C', D') [+] X[i][r'(j)] + [+] K'(j)) [+] E'; + * A' := E'; E' := D'; D' := rol_10(C'); C' := B'; B' := T; + * } + * T := h1 [+] C [+] D'; h1 := h2 [+] D [+] E'; h2 := h3 [+] E [+] A'; + * h3 := h4 [+] A [+] B'; h4 := h0 [+] B [+] C'; h0 := T; + * } + */ + +/* Some examples: + * "" 9c1185a5c5e9fc54612808977ee8f548b2258d31 + * "a" 0bdc9d2d256b3ee9daae347be6f4dc835a467ffe + * "abc" 8eb208f7e05d987a9b044a8e98c6b087f15a0bfc + * "message digest" 5d0689ef49d2fae572b881b123a85ffa21595f36 + * "a...z" f71c27109c692c1b56bbdceb5b9d2865b3708dbc + * "abcdbcde...nopq" 12a053384a9c0c88e405a06c27dcf49ada62eb2b + * "A...Za...z0...9" b0e20b6e3116640286ed3a87a5713079b21f5189 + * 8 times "1234567890" 9b752e45573d4b39f4dbd3323cab82bf63326bfb + * 1 million times "a" 52783243c1697bdbe16d37f97f68f08325dc1528 + */ + +static void +burn_stack (int bytes) +{ + char buf[150]; + + memset (buf, 0, sizeof buf); + bytes -= sizeof buf; + if (bytes > 0) + burn_stack (bytes); +} + + + +void +rmd160_init( RMD160_CONTEXT *hd ) +{ + hd->h0 = 0x67452301; + hd->h1 = 0xEFCDAB89; + hd->h2 = 0x98BADCFE; + hd->h3 = 0x10325476; + hd->h4 = 0xC3D2E1F0; + hd->nblocks = 0; + hd->count = 0; +} + + + +/**************** + * Transform the message X which consists of 16 32-bit-words + */ +static void +transform( RMD160_CONTEXT *hd, byte *data ) +{ + u32 a,b,c,d,e,aa,bb,cc,dd,ee,t; + #ifdef BIG_ENDIAN_HOST + u32 x[16]; + { int i; + byte *p2, *p1; + for(i=0, p1=data, p2=(byte*)x; i < 16; i++, p2 += 4 ) { + p2[3] = *p1++; + p2[2] = *p1++; + p2[1] = *p1++; + p2[0] = *p1++; + } + } + #else + #if 0 + u32 *x =(u32*)data; + #else + /* this version is better because it is always aligned; + * The performance penalty on a 586-100 is about 6% which + * is acceptable - because the data is more local it might + * also be possible that this is faster on some machines. + * This function (when compiled with -02 on gcc 2.7.2) + * executes on a 586-100 (39.73 bogomips) at about 1900kb/sec; + * [measured with a 4MB data and "gpgm --print-md rmd160"] */ + u32 x[16]; + memcpy( x, data, 64 ); + #endif + #endif + + +#define K0 0x00000000 +#define K1 0x5A827999 +#define K2 0x6ED9EBA1 +#define K3 0x8F1BBCDC +#define K4 0xA953FD4E +#define KK0 0x50A28BE6 +#define KK1 0x5C4DD124 +#define KK2 0x6D703EF3 +#define KK3 0x7A6D76E9 +#define KK4 0x00000000 +#define F0(x,y,z) ( (x) ^ (y) ^ (z) ) +#define F1(x,y,z) ( ((x) & (y)) | (~(x) & (z)) ) +#define F2(x,y,z) ( ((x) | ~(y)) ^ (z) ) +#define F3(x,y,z) ( ((x) & (z)) | ((y) & ~(z)) ) +#define F4(x,y,z) ( (x) ^ ((y) | ~(z)) ) +#define R(a,b,c,d,e,f,k,r,s) do { t = a + f(b,c,d) + k + x[r]; \ + a = rol(t,s) + e; \ + c = rol(c,10); \ + } while(0) + + /* left lane */ + a = hd->h0; + b = hd->h1; + c = hd->h2; + d = hd->h3; + e = hd->h4; + R( a, b, c, d, e, F0, K0, 0, 11 ); + R( e, a, b, c, d, F0, K0, 1, 14 ); + R( d, e, a, b, c, F0, K0, 2, 15 ); + R( c, d, e, a, b, F0, K0, 3, 12 ); + R( b, c, d, e, a, F0, K0, 4, 5 ); + R( a, b, c, d, e, F0, K0, 5, 8 ); + R( e, a, b, c, d, F0, K0, 6, 7 ); + R( d, e, a, b, c, F0, K0, 7, 9 ); + R( c, d, e, a, b, F0, K0, 8, 11 ); + R( b, c, d, e, a, F0, K0, 9, 13 ); + R( a, b, c, d, e, F0, K0, 10, 14 ); + R( e, a, b, c, d, F0, K0, 11, 15 ); + R( d, e, a, b, c, F0, K0, 12, 6 ); + R( c, d, e, a, b, F0, K0, 13, 7 ); + R( b, c, d, e, a, F0, K0, 14, 9 ); + R( a, b, c, d, e, F0, K0, 15, 8 ); + R( e, a, b, c, d, F1, K1, 7, 7 ); + R( d, e, a, b, c, F1, K1, 4, 6 ); + R( c, d, e, a, b, F1, K1, 13, 8 ); + R( b, c, d, e, a, F1, K1, 1, 13 ); + R( a, b, c, d, e, F1, K1, 10, 11 ); + R( e, a, b, c, d, F1, K1, 6, 9 ); + R( d, e, a, b, c, F1, K1, 15, 7 ); + R( c, d, e, a, b, F1, K1, 3, 15 ); + R( b, c, d, e, a, F1, K1, 12, 7 ); + R( a, b, c, d, e, F1, K1, 0, 12 ); + R( e, a, b, c, d, F1, K1, 9, 15 ); + R( d, e, a, b, c, F1, K1, 5, 9 ); + R( c, d, e, a, b, F1, K1, 2, 11 ); + R( b, c, d, e, a, F1, K1, 14, 7 ); + R( a, b, c, d, e, F1, K1, 11, 13 ); + R( e, a, b, c, d, F1, K1, 8, 12 ); + R( d, e, a, b, c, F2, K2, 3, 11 ); + R( c, d, e, a, b, F2, K2, 10, 13 ); + R( b, c, d, e, a, F2, K2, 14, 6 ); + R( a, b, c, d, e, F2, K2, 4, 7 ); + R( e, a, b, c, d, F2, K2, 9, 14 ); + R( d, e, a, b, c, F2, K2, 15, 9 ); + R( c, d, e, a, b, F2, K2, 8, 13 ); + R( b, c, d, e, a, F2, K2, 1, 15 ); + R( a, b, c, d, e, F2, K2, 2, 14 ); + R( e, a, b, c, d, F2, K2, 7, 8 ); + R( d, e, a, b, c, F2, K2, 0, 13 ); + R( c, d, e, a, b, F2, K2, 6, 6 ); + R( b, c, d, e, a, F2, K2, 13, 5 ); + R( a, b, c, d, e, F2, K2, 11, 12 ); + R( e, a, b, c, d, F2, K2, 5, 7 ); + R( d, e, a, b, c, F2, K2, 12, 5 ); + R( c, d, e, a, b, F3, K3, 1, 11 ); + R( b, c, d, e, a, F3, K3, 9, 12 ); + R( a, b, c, d, e, F3, K3, 11, 14 ); + R( e, a, b, c, d, F3, K3, 10, 15 ); + R( d, e, a, b, c, F3, K3, 0, 14 ); + R( c, d, e, a, b, F3, K3, 8, 15 ); + R( b, c, d, e, a, F3, K3, 12, 9 ); + R( a, b, c, d, e, F3, K3, 4, 8 ); + R( e, a, b, c, d, F3, K3, 13, 9 ); + R( d, e, a, b, c, F3, K3, 3, 14 ); + R( c, d, e, a, b, F3, K3, 7, 5 ); + R( b, c, d, e, a, F3, K3, 15, 6 ); + R( a, b, c, d, e, F3, K3, 14, 8 ); + R( e, a, b, c, d, F3, K3, 5, 6 ); + R( d, e, a, b, c, F3, K3, 6, 5 ); + R( c, d, e, a, b, F3, K3, 2, 12 ); + R( b, c, d, e, a, F4, K4, 4, 9 ); + R( a, b, c, d, e, F4, K4, 0, 15 ); + R( e, a, b, c, d, F4, K4, 5, 5 ); + R( d, e, a, b, c, F4, K4, 9, 11 ); + R( c, d, e, a, b, F4, K4, 7, 6 ); + R( b, c, d, e, a, F4, K4, 12, 8 ); + R( a, b, c, d, e, F4, K4, 2, 13 ); + R( e, a, b, c, d, F4, K4, 10, 12 ); + R( d, e, a, b, c, F4, K4, 14, 5 ); + R( c, d, e, a, b, F4, K4, 1, 12 ); + R( b, c, d, e, a, F4, K4, 3, 13 ); + R( a, b, c, d, e, F4, K4, 8, 14 ); + R( e, a, b, c, d, F4, K4, 11, 11 ); + R( d, e, a, b, c, F4, K4, 6, 8 ); + R( c, d, e, a, b, F4, K4, 15, 5 ); + R( b, c, d, e, a, F4, K4, 13, 6 ); + + aa = a; bb = b; cc = c; dd = d; ee = e; + + /* right lane */ + a = hd->h0; + b = hd->h1; + c = hd->h2; + d = hd->h3; + e = hd->h4; + R( a, b, c, d, e, F4, KK0, 5, 8); + R( e, a, b, c, d, F4, KK0, 14, 9); + R( d, e, a, b, c, F4, KK0, 7, 9); + R( c, d, e, a, b, F4, KK0, 0, 11); + R( b, c, d, e, a, F4, KK0, 9, 13); + R( a, b, c, d, e, F4, KK0, 2, 15); + R( e, a, b, c, d, F4, KK0, 11, 15); + R( d, e, a, b, c, F4, KK0, 4, 5); + R( c, d, e, a, b, F4, KK0, 13, 7); + R( b, c, d, e, a, F4, KK0, 6, 7); + R( a, b, c, d, e, F4, KK0, 15, 8); + R( e, a, b, c, d, F4, KK0, 8, 11); + R( d, e, a, b, c, F4, KK0, 1, 14); + R( c, d, e, a, b, F4, KK0, 10, 14); + R( b, c, d, e, a, F4, KK0, 3, 12); + R( a, b, c, d, e, F4, KK0, 12, 6); + R( e, a, b, c, d, F3, KK1, 6, 9); + R( d, e, a, b, c, F3, KK1, 11, 13); + R( c, d, e, a, b, F3, KK1, 3, 15); + R( b, c, d, e, a, F3, KK1, 7, 7); + R( a, b, c, d, e, F3, KK1, 0, 12); + R( e, a, b, c, d, F3, KK1, 13, 8); + R( d, e, a, b, c, F3, KK1, 5, 9); + R( c, d, e, a, b, F3, KK1, 10, 11); + R( b, c, d, e, a, F3, KK1, 14, 7); + R( a, b, c, d, e, F3, KK1, 15, 7); + R( e, a, b, c, d, F3, KK1, 8, 12); + R( d, e, a, b, c, F3, KK1, 12, 7); + R( c, d, e, a, b, F3, KK1, 4, 6); + R( b, c, d, e, a, F3, KK1, 9, 15); + R( a, b, c, d, e, F3, KK1, 1, 13); + R( e, a, b, c, d, F3, KK1, 2, 11); + R( d, e, a, b, c, F2, KK2, 15, 9); + R( c, d, e, a, b, F2, KK2, 5, 7); + R( b, c, d, e, a, F2, KK2, 1, 15); + R( a, b, c, d, e, F2, KK2, 3, 11); + R( e, a, b, c, d, F2, KK2, 7, 8); + R( d, e, a, b, c, F2, KK2, 14, 6); + R( c, d, e, a, b, F2, KK2, 6, 6); + R( b, c, d, e, a, F2, KK2, 9, 14); + R( a, b, c, d, e, F2, KK2, 11, 12); + R( e, a, b, c, d, F2, KK2, 8, 13); + R( d, e, a, b, c, F2, KK2, 12, 5); + R( c, d, e, a, b, F2, KK2, 2, 14); + R( b, c, d, e, a, F2, KK2, 10, 13); + R( a, b, c, d, e, F2, KK2, 0, 13); + R( e, a, b, c, d, F2, KK2, 4, 7); + R( d, e, a, b, c, F2, KK2, 13, 5); + R( c, d, e, a, b, F1, KK3, 8, 15); + R( b, c, d, e, a, F1, KK3, 6, 5); + R( a, b, c, d, e, F1, KK3, 4, 8); + R( e, a, b, c, d, F1, KK3, 1, 11); + R( d, e, a, b, c, F1, KK3, 3, 14); + R( c, d, e, a, b, F1, KK3, 11, 14); + R( b, c, d, e, a, F1, KK3, 15, 6); + R( a, b, c, d, e, F1, KK3, 0, 14); + R( e, a, b, c, d, F1, KK3, 5, 6); + R( d, e, a, b, c, F1, KK3, 12, 9); + R( c, d, e, a, b, F1, KK3, 2, 12); + R( b, c, d, e, a, F1, KK3, 13, 9); + R( a, b, c, d, e, F1, KK3, 9, 12); + R( e, a, b, c, d, F1, KK3, 7, 5); + R( d, e, a, b, c, F1, KK3, 10, 15); + R( c, d, e, a, b, F1, KK3, 14, 8); + R( b, c, d, e, a, F0, KK4, 12, 8); + R( a, b, c, d, e, F0, KK4, 15, 5); + R( e, a, b, c, d, F0, KK4, 10, 12); + R( d, e, a, b, c, F0, KK4, 4, 9); + R( c, d, e, a, b, F0, KK4, 1, 12); + R( b, c, d, e, a, F0, KK4, 5, 5); + R( a, b, c, d, e, F0, KK4, 8, 14); + R( e, a, b, c, d, F0, KK4, 7, 6); + R( d, e, a, b, c, F0, KK4, 6, 8); + R( c, d, e, a, b, F0, KK4, 2, 13); + R( b, c, d, e, a, F0, KK4, 13, 6); + R( a, b, c, d, e, F0, KK4, 14, 5); + R( e, a, b, c, d, F0, KK4, 0, 15); + R( d, e, a, b, c, F0, KK4, 3, 13); + R( c, d, e, a, b, F0, KK4, 9, 11); + R( b, c, d, e, a, F0, KK4, 11, 11); + + + t = hd->h1 + d + cc; + hd->h1 = hd->h2 + e + dd; + hd->h2 = hd->h3 + a + ee; + hd->h3 = hd->h4 + b + aa; + hd->h4 = hd->h0 + c + bb; + hd->h0 = t; +} + + +/* Update the message digest with the contents + * of INBUF with length INLEN. + */ +static void +rmd160_write( RMD160_CONTEXT *hd, byte *inbuf, size_t inlen) +{ + if( hd->count == 64 ) { /* flush the buffer */ + transform( hd, hd->buf ); + burn_stack (108+5*sizeof(void*)); + hd->count = 0; + hd->nblocks++; + } + if( !inbuf ) + return; + if( hd->count ) { + for( ; inlen && hd->count < 64; inlen-- ) + hd->buf[hd->count++] = *inbuf++; + rmd160_write( hd, NULL, 0 ); + if( !inlen ) + return; + } + + while( inlen >= 64 ) { + transform( hd, inbuf ); + hd->count = 0; + hd->nblocks++; + inlen -= 64; + inbuf += 64; + } + burn_stack (108+5*sizeof(void*)); + for( ; inlen && hd->count < 64; inlen-- ) + hd->buf[hd->count++] = *inbuf++; +} + +/**************** + * Apply the rmd160 transform function on the buffer which must have + * a length 64 bytes. Do not use this function together with the + * other functions, use rmd160_init to initialize internal variables. + * Returns: 16 bytes in buffer with the mixed contentes of buffer. + */ +void +rmd160_mixblock( RMD160_CONTEXT *hd, char *buffer ) +{ + char *p = buffer; + transform( hd, buffer ); + #define X(a) do { *(u32*)p = hd->h##a ; p += 4; } while(0) + X(0); + X(1); + X(2); + X(3); + X(4); + #undef X +} + + +/* The routine terminates the computation + */ + +static void +rmd160_final( RMD160_CONTEXT *hd ) +{ + u32 t, msb, lsb; + byte *p; + + rmd160_write(hd, NULL, 0); /* flush */; + + t = hd->nblocks; + /* multiply by 64 to make a byte count */ + lsb = t << 6; + msb = t >> 26; + /* add the count */ + t = lsb; + if( (lsb += hd->count) < t ) + msb++; + /* multiply by 8 to make a bit count */ + t = lsb; + lsb <<= 3; + msb <<= 3; + msb |= t >> 29; + + if( hd->count < 56 ) { /* enough room */ + hd->buf[hd->count++] = 0x80; /* pad */ + while( hd->count < 56 ) + hd->buf[hd->count++] = 0; /* pad */ + } + else { /* need one extra block */ + hd->buf[hd->count++] = 0x80; /* pad character */ + while( hd->count < 64 ) + hd->buf[hd->count++] = 0; + rmd160_write(hd, NULL, 0); /* flush */; + memset(hd->buf, 0, 56 ); /* fill next block with zeroes */ + } + /* append the 64 bit count */ + hd->buf[56] = lsb ; + hd->buf[57] = lsb >> 8; + hd->buf[58] = lsb >> 16; + hd->buf[59] = lsb >> 24; + hd->buf[60] = msb ; + hd->buf[61] = msb >> 8; + hd->buf[62] = msb >> 16; + hd->buf[63] = msb >> 24; + transform( hd, hd->buf ); + burn_stack (108+5*sizeof(void*)); + + p = hd->buf; + #ifdef BIG_ENDIAN_HOST + #define X(a) do { *p++ = hd->h##a ; *p++ = hd->h##a >> 8; \ + *p++ = hd->h##a >> 16; *p++ = hd->h##a >> 24; } while(0) + #else /* little endian */ + #define X(a) do { *(u32*)p = hd->h##a ; p += 4; } while(0) + #endif + X(0); + X(1); + X(2); + X(3); + X(4); + #undef X +} + +static byte * +rmd160_read( RMD160_CONTEXT *hd ) +{ + return hd->buf; +} + + + +/**************** + * Shortcut functions which puts the hash value of the supplied buffer + * into outbuf which must have a size of 20 bytes. + */ +void +rmd160_hash_buffer( char *outbuf, const char *buffer, size_t length ) +{ + RMD160_CONTEXT hd; + + rmd160_init( &hd ); + rmd160_write( &hd, (byte*)buffer, length ); + rmd160_final( &hd ); + memcpy( outbuf, hd.buf, 20 ); +} + + +/**************** + * Return some information about the algorithm. We need algo here to + * distinguish different flavors of the algorithm. + * Returns: A pointer to string describing the algorithm or NULL if + * the ALGO is invalid. + */ +static const char * +rmd160_get_info( int algo, size_t *contextsize, + byte **r_asnoid, int *r_asnlen, int *r_mdlen, + void (**r_init)( void *c ), + void (**r_write)( void *c, byte *buf, size_t nbytes ), + void (**r_final)( void *c ), + byte *(**r_read)( void *c ) + ) +{ + static byte asn[15] = /* Object ID is 1.3.36.3.2.1 */ + { 0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x24, 0x03, + 0x02, 0x01, 0x05, 0x00, 0x04, 0x14 }; + + if( algo != 3 ) + return NULL; + + *contextsize = sizeof(RMD160_CONTEXT); + *r_asnoid = asn; + *r_asnlen = DIM(asn); + *r_mdlen = 20; + *(void (**)(RMD160_CONTEXT *))r_init = rmd160_init; + *(void (**)(RMD160_CONTEXT *, byte*, size_t))r_write = rmd160_write; + *(void (**)(RMD160_CONTEXT *))r_final = rmd160_final; + *(byte *(**)(RMD160_CONTEXT *))r_read = rmd160_read; + + return "RIPEMD160"; +} + + +#ifndef IS_MODULE +static +#endif +const char * const gnupgext_version = "RMD160 ($Revision$)"; + +static struct { + int class; + int version; + int value; + void (*func)(void); +} func_table[] = { + { 10, 1, 0, (void(*)(void))rmd160_get_info }, + { 11, 1, 3 }, +}; + + +#ifndef IS_MODULE +static +#endif +void * +gnupgext_enum_func( int what, int *sequence, int *class, int *vers ) +{ + void *ret; + int i = *sequence; + + do { + if( i >= DIM(func_table) || i < 0 ) { + return NULL; + } + *class = func_table[i].class; + *vers = func_table[i].version; + switch( *class ) { + case 11: + case 21: + case 31: + ret = &func_table[i].value; + break; + default: +#ifndef __riscos__ + ret = func_table[i].func; +#else /* __riscos__ */ + ret = (void *) func_table[i].func; +#endif /* __riscos__ */ + break; + } + i++; + } while( what && what != *class ); + + *sequence = i; + return ret; +} + + + + +#ifndef IS_MODULE +void +rmd160_constructor(void) +{ + register_internal_cipher_extension( gnupgext_version, gnupgext_enum_func ); +} +#endif + diff --git a/cipher/rmd160test.c b/cipher/rmd160test.c new file mode 100644 index 000000000..14afb435b --- /dev/null +++ b/cipher/rmd160test.c @@ -0,0 +1,63 @@ +/* rmd160test.c - ripe md160 test program + * Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + +#include <config.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "util.h" +#include "rmd.h" + +static void +usage(void) +{ + fprintf(stderr, "usage: rmd160test\n"); + exit(1); +} + + +int +main(int argc, char **argv) +{ + RMDHANDLE rmdhd; + int i, n; + byte buf[100], *p; + + if( argc > 1 ) + usage(); + + rmdhd = rmd160_open(0); + #if 1 + while( (n = fread( buf, 1, 100, stdin )) > 0 ) + rmd160_write(rmdhd, buf, n); + #else + for(i=0; i < 1000000; i++ ) + rmd160_putchar(rmdhd, 'a'); + #endif + p = rmd160_final(rmdhd); + for(i=0; i < 20; i++, p++ ) + printf("%02x", *p ); + putchar('\n'); + + rmd160_close(rmdhd); + return 0; +} + diff --git a/cipher/rndegd.c b/cipher/rndegd.c new file mode 100644 index 000000000..64226eabb --- /dev/null +++ b/cipher/rndegd.c @@ -0,0 +1,255 @@ +/* rndegd.c - interface to the EGD + * Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + +#include <config.h> +#include <stdio.h> +#include <stdlib.h> +#include <assert.h> +#include <errno.h> +#include <sys/time.h> +#include <sys/stat.h> +#include <string.h> +#include <unistd.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <sys/un.h> +#include "types.h" +#include "util.h" +#include "ttyio.h" +#include "dynload.h" +#include "cipher.h" + +#ifdef IS_MODULE + #define _(a) (a) +#else + #include "i18n.h" +#endif + +#ifndef offsetof +#define offsetof(type, member) ((size_t) &((type *)0)->member) +#endif + +static int +do_write( int fd, void *buf, size_t nbytes ) +{ + size_t nleft = nbytes; + int nwritten; + + while( nleft > 0 ) { + nwritten = write( fd, buf, nleft); + if( nwritten < 0 ) { + if( errno == EINTR ) + continue; + return -1; + } + nleft -= nwritten; + buf = (char*)buf + nwritten; + } + return 0; +} + +static int +do_read( int fd, void *buf, size_t nbytes ) +{ + int n, nread = 0; + + do { + do { + n = read(fd, (char*)buf + nread, nbytes ); + } while( n == -1 && errno == EINTR ); + if( n == -1 ) + return -1; + nread += n; + } while( nread < nbytes ); + return nbytes; +} + + + +/**************** + * Note: we always use the highest level. + * TO boost the performance we may want to add some + * additional code for level 1 + * + * Using a level of 0 should never block and better add nothing + * to the pool. So this is just a dummy for EGD. + */ +static int +gather_random( void (*add)(const void*, size_t, int), int requester, + size_t length, int level ) +{ + static int fd = -1; + int n; + byte buffer[256+2]; + int nbytes; + int do_restart = 0; + + if( !length ) + return 0; + if( !level ) + return 0; + + restart: + if( do_restart ) { + if( fd != -1 ) { + close( fd ); + fd = -1; + } + } + if( fd == -1 ) { + const char *bname = NULL; + char *name; + struct sockaddr_un addr; + int addr_len; + + #ifdef EGD_SOCKET_NAME + bname = EGD_SOCKET_NAME; + #endif + if ( !bname || !*bname ) + bname = "=entropy"; + + if ( *bname == '=' && bname[1] ) + name = make_filename( g10_opt_homedir, bname+1 , NULL ); + else + name = make_filename( bname , NULL ); + + if ( strlen(name)+1 >= sizeof addr.sun_path ) + g10_log_fatal ("EGD socketname is too long\n"); + + memset( &addr, 0, sizeof addr ); + addr.sun_family = AF_UNIX; + strcpy( addr.sun_path, name ); + addr_len = offsetof( struct sockaddr_un, sun_path ) + + strlen( addr.sun_path ); + + fd = socket(AF_UNIX, SOCK_STREAM, 0); + if( fd == -1 ) + g10_log_fatal("can't create unix domain socket: %s\n", + strerror(errno) ); + if( connect( fd, (struct sockaddr*)&addr, addr_len) == -1 ) + g10_log_fatal("can't connect to `%s': %s\n", + name, strerror(errno) ); + m_free(name); + } + do_restart = 0; + + nbytes = length < 255? length : 255; + /* first time we do it with a non blocking request */ + buffer[0] = 1; /* non blocking */ + buffer[1] = nbytes; + if( do_write( fd, buffer, 2 ) == -1 ) + g10_log_fatal("can't write to the EGD: %s\n", strerror(errno) ); + n = do_read( fd, buffer, 1 ); + if( n == -1 ) { + g10_log_error("read error on EGD: %s\n", strerror(errno)); + do_restart = 1; + goto restart; + } + n = buffer[0]; + if( n ) { + n = do_read( fd, buffer, n ); + if( n == -1 ) { + g10_log_error("read error on EGD: %s\n", strerror(errno)); + do_restart = 1; + goto restart; + } + (*add)( buffer, n, requester ); + length -= n; + } + + if( length ) { + #ifdef IS_MODULE + fprintf( stderr, + #else + tty_printf( + #endif + _("Please wait, entropy is being gathered. Do some work if it would\n" + "keep you from getting bored, because it will improve the quality\n" + "of the entropy.\n") ); + } + while( length ) { + nbytes = length < 255? length : 255; + + buffer[0] = 2; /* blocking */ + buffer[1] = nbytes; + if( do_write( fd, buffer, 2 ) == -1 ) + g10_log_fatal("can't write to the EGD: %s\n", strerror(errno) ); + n = do_read( fd, buffer, nbytes ); + if( n == -1 ) { + g10_log_error("read error on EGD: %s\n", strerror(errno)); + do_restart = 1; + goto restart; + } + (*add)( buffer, n, requester ); + length -= n; + } + memset(buffer, 0, sizeof(buffer) ); + + return 0; /* success */ +} + + + +#ifndef IS_MODULE +static +#endif +const char * const gnupgext_version = "RNDEGD ($Revision$)"; + +static struct { + int class; + int version; + int (*func)(void); +} func_table[] = { + { 40, 1, (int (*)(void))gather_random }, +}; + + +#ifndef IS_MODULE +static +#endif +void * +gnupgext_enum_func( int what, int *sequence, int *class, int *vers ) +{ + void *ret; + int i = *sequence; + + do { + if ( i >= DIM(func_table) || i < 0 ) { + return NULL; + } + *class = func_table[i].class; + *vers = func_table[i].version; + ret = func_table[i].func; + i++; + } while ( what && what != *class ); + + *sequence = i; + return ret; +} + +#ifndef IS_MODULE +void +rndegd_constructor(void) +{ + register_internal_cipher_extension( gnupgext_version, + gnupgext_enum_func ); +} +#endif + diff --git a/cipher/rndlinux.c b/cipher/rndlinux.c new file mode 100644 index 000000000..be333d2b3 --- /dev/null +++ b/cipher/rndlinux.c @@ -0,0 +1,242 @@ +/* rndlinux.c - raw random number for OSes with /dev/random + * Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + + +#include <config.h> +#include <stdio.h> +#include <stdlib.h> +#include <assert.h> +#include <errno.h> +#include <sys/time.h> +#include <sys/types.h> +#include <sys/stat.h> +#ifdef HAVE_GETTIMEOFDAY + #include <sys/times.h> +#endif +#include <string.h> +#include <unistd.h> +#include <fcntl.h> +#if 0 + #ifdef HAVE_LINUX_RANDOM_H + #include <sys/ioctl.h> + #include <asm/types.h> + #include <linux/random.h> + #endif +#endif +#include "types.h" +#include "util.h" +#include "ttyio.h" +#include "dynload.h" + +#ifdef IS_MODULE + #define _(a) (a) +#else + #include "i18n.h" +#endif + +static int open_device( const char *name, int minor ); +static int gather_random( void (*add)(const void*, size_t, int), int requester, + size_t length, int level ); + +#if 0 +#ifdef HAVE_DEV_RANDOM_IOCTL +static ulong +get_entropy_count( int fd ) +{ + ulong count; + + if( ioctl( fd, RNDGETENTCNT, &count ) == -1 ) + g10_log_fatal("ioctl(RNDGETENTCNT) failed: %s\n", strerror(errno) ); + return count; +} +#endif +#endif + +/**************** + * Used to open the /dev/random devices (Linux, xBSD, Solaris (if it exists), ...) + */ +static int +open_device( const char *name, int minor ) +{ + int fd; + struct stat sb; + + fd = open( name, O_RDONLY ); + if( fd == -1 ) + g10_log_fatal("can't open %s: %s\n", name, strerror(errno) ); + if( fstat( fd, &sb ) ) + g10_log_fatal("stat() off %s failed: %s\n", name, strerror(errno) ); + /* Don't check device type for better portability */ + /* if( (!S_ISCHR(sb.st_mode)) && (!S_ISFIFO(sb.st_mode)) ) + g10_log_fatal("invalid random device!\n" ); */ + return fd; +} + + +/**************** + * Note: Using a level of 0 should never block and better add nothing + * to the pool. This is easy to accomplish with /dev/urandom. + */ +static int +gather_random( void (*add)(const void*, size_t, int), int requester, + size_t length, int level ) +{ + static int fd_urandom = -1; + static int fd_random = -1; + int fd; + int n; + int warn=0; + byte buffer[768]; + + if( level >= 2 ) { + if( fd_random == -1 ) + fd_random = open_device( NAME_OF_DEV_RANDOM, 8 ); + fd = fd_random; + } + else { + /* this will also be used for elve 0 but by using /dev/urandom + * we can be sure that oit will never block. */ + if( fd_urandom == -1 ) + fd_urandom = open_device( NAME_OF_DEV_URANDOM, 9 ); + fd = fd_urandom; + } + + #if 0 + #ifdef HAVE_DEV_RANDOM_IOCTL + g10_log_info("entropy count of %d is %lu\n", fd, get_entropy_count(fd) ); + #endif + #endif + while( length ) { + fd_set rfds; + struct timeval tv; + int rc; + + FD_ZERO(&rfds); + FD_SET(fd, &rfds); + tv.tv_sec = 3; + tv.tv_usec = 0; + if( !(rc=select(fd+1, &rfds, NULL, NULL, &tv)) ) { + if( !warn ) + #ifdef IS_MODULE + fprintf(stderr, + #else + tty_printf( + #endif +_("\n" +"Not enough random bytes available. Please do some other work to give\n" +"the OS a chance to collect more entropy! (Need %d more bytes)\n"), (int)length ); + warn = 1; + continue; + } + else if( rc == -1 ) { + #ifdef IS_MODULE + fprintf(stderr, + #else + tty_printf( + #endif + "select() error: %s\n", strerror(errno)); + continue; + } + + do { + int nbytes = length < sizeof(buffer)? length : sizeof(buffer); + n = read(fd, buffer, nbytes ); + if( n >= 0 && n > nbytes ) { + g10_log_error("bogus read from random device (n=%d)\n", n ); + n = nbytes; + } + } while( n == -1 && errno == EINTR ); + if( n == -1 ) + g10_log_fatal("read error on random device: %s\n", strerror(errno)); + (*add)( buffer, n, requester ); + length -= n; + } + memset(buffer, 0, sizeof(buffer) ); + + return 0; /* success */ +} + + + +#ifndef IS_MODULE +static +#endif +const char * const gnupgext_version = "RNDLINUX ($Revision$)"; + +static struct { + int class; + int version; + int (*func)(void); +} func_table[] = { + { 40, 1, (int (*)(void))gather_random }, +}; + + + +/**************** + * Enumerate the names of the functions together with informations about + * this function. Set sequence to an integer with a initial value of 0 and + * do not change it. + * If what is 0 all kind of functions are returned. + * Return values: class := class of function: + * 10 = message digest algorithm info function + * 11 = integer with available md algorithms + * 20 = cipher algorithm info function + * 21 = integer with available cipher algorithms + * 30 = public key algorithm info function + * 31 = integer with available pubkey algorithms + * 40 = get gather_random function + * 41 = get fast_random_poll function + * version = interface version of the function/pointer + * (currently this is 1 for all functions) + */ + +#ifndef IS_MODULE +static +#endif +void * +gnupgext_enum_func( int what, int *sequence, int *class, int *vers ) +{ + void *ret; + int i = *sequence; + + do { + if ( i >= DIM(func_table) || i < 0 ) { + return NULL; + } + *class = func_table[i].class; + *vers = func_table[i].version; + ret = func_table[i].func; + i++; + } while ( what && what != *class ); + + *sequence = i; + return ret; +} + +#ifndef IS_MODULE +void +rndlinux_constructor(void) +{ + register_internal_cipher_extension( gnupgext_version, + gnupgext_enum_func ); +} +#endif + diff --git a/cipher/rndriscos.c b/cipher/rndriscos.c new file mode 100644 index 000000000..47144517a --- /dev/null +++ b/cipher/rndriscos.c @@ -0,0 +1,147 @@ +/* rndriscos.c - raw random number for RISC OS + * Copyright (C) 2001 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + +#include <config.h> +#include <stdio.h> +#include <stdlib.h> +#include <errno.h> +#include <string.h> +#include <kernel.h> +#include <swis.h> +#include "util.h" +#include "dynload.h" + +static int init_device(void); +static int gather_random(void (*add)(const void*, size_t, int), int requester, + size_t length, int level); + +#define CryptRandom_Byte 0x51980 + +/**************** + * Used to load the CryptRandom module if it isn't already loaded + */ +static int +init_device(void) +{ + _kernel_swi_regs r; + + /* Is CryptRandom already loaded? */ + r.r[0] = 18; + r.r[1] = (int) "CryptRandom"; + if (!_kernel_swi(OS_Module, &r, &r)) + return 1; + + /* Is it named CryptRand and inside GnuPG$Path? */ + r.r[0] = 1; + r.r[1] = (int) "GnuPG:CryptRand"; + if (!_kernel_swi(OS_Module, &r, &r)) + return 1; + + /* Is it named CryptRandom and inside GnuPG$Path? */ + r.r[0] = 1; + r.r[1] = (int) "GnuPG:CryptRandom"; + if (!_kernel_swi(OS_Module, &r, &r)) + return 1; + + /* Can't find CryptRandom in the default locations */ + g10_log_fatal("Can't load module CryptRandom.\n"); +} + + +/**************** + */ +static int +gather_random(void (*add)(const void*, size_t, int), int requester, + size_t length, int level) +{ + static int initialized = 0; + int n; + byte buffer[768]; + _kernel_swi_regs r; + _kernel_oserror *e; + + if (!initialized) + initialized = init_device(); + + while (length) { + int nbytes = length < sizeof(buffer) ? length : sizeof(buffer); + + for (n = 0; n < nbytes; n++) { + if (e = _kernel_swi(CryptRandom_Byte, &r, &r)) + g10_log_fatal("CryptRandom module isn't working as expected!\n"); + buffer[n] = (byte) r.r[0]; + } + + (*add)(buffer, n, requester); + length -= n; + } + memset(buffer, 0, sizeof(buffer)); + + return 0; /* success */ +} + + + +#ifndef IS_MODULE +static +#endif +const char * const gnupgext_version = "RNDRISCOS ($Revision$)"; + +static struct { + int class; + int version; + int (*func)(void); +} func_table[] = { + { 40, 1, (int (*)(void))gather_random }, +}; + + +#ifndef IS_MODULE +static +#endif +void * +gnupgext_enum_func( int what, int *sequence, int *class, int *vers ) +{ + void *ret; + int i = *sequence; + + do { + if ( i >= DIM(func_table) || i < 0 ) { + return NULL; + } + *class = func_table[i].class; + *vers = func_table[i].version; + ret = (void*) func_table[i].func; + i++; + } while ( what && what != *class ); + + *sequence = i; + return ret; +} + +#ifndef IS_MODULE +void +rndriscos_constructor(void) +{ + register_internal_cipher_extension( gnupgext_version, + gnupgext_enum_func ); +} +#endif + diff --git a/cipher/rndunix.c b/cipher/rndunix.c new file mode 100644 index 000000000..a46b5ec97 --- /dev/null +++ b/cipher/rndunix.c @@ -0,0 +1,915 @@ +/**************************************************************************** + * * + * * + * Unix Randomness-Gathering Code * + * * + * Copyright Peter Gutmann, Paul Kendall, and Chris Wedgwood 1996-1999. * + * Heavily modified for GnuPG by Werner Koch * + * * + * * + ****************************************************************************/ + +/* This module is part of the cryptlib continuously seeded pseudorandom + number generator. For usage conditions, see lib_rand.c + + [Here is the notice from lib_rand.c:] + + This module and the misc/rnd*.c modules represent the cryptlib + continuously seeded pseudorandom number generator (CSPRNG) as described in + my 1998 Usenix Security Symposium paper "The generation of random numbers + for cryptographic purposes". + + The CSPRNG code is copyright Peter Gutmann (and various others) 1996, + 1997, 1998, 1999, all rights reserved. Redistribution of the CSPRNG + modules and use in source and binary forms, with or without modification, + are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice + and this permission notice in its entirety. + + 2. Redistributions in binary form must reproduce the copyright notice in + the documentation and/or other materials provided with the distribution. + + 3. A copy of any bugfixes or enhancements made must be provided to the + author, <pgut001@cs.auckland.ac.nz> to allow them to be added to the + baseline version of the code. + + ALTERNATIVELY, the code may be distributed under the terms of the GNU + General Public License, version 2 or any later version published by the + Free Software Foundation, in which case the provisions of the GNU GPL are + required INSTEAD OF the above restrictions. + + Although not required under the terms of the GPL, it would still be nice if + you could make any changes available to the author to allow a consistent + code base to be maintained */ + + + +/* General includes */ + +#include <config.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <assert.h> + +/* OS-specific includes */ + +#ifdef __osf__ + /* Somewhere in the morass of system-specific cruft which OSF/1 pulls in + * via the following includes are various endianness defines, so we + * undefine the cryptlib ones, which aren't really needed for this module + * anyway */ +#undef BIG_ENDIAN +#undef LITTLE_ENDIAN +#endif /* __osf__ */ + +#include <unistd.h> +#include <fcntl.h> +#include <pwd.h> +#ifndef __QNX__ +#include <sys/errno.h> +#include <sys/ipc.h> +#endif /* __QNX__ */ +#include <sys/time.h> /* SCO and SunOS need this before resource.h */ +#ifndef __QNX__ +#include <sys/resource.h> +#endif /* __QNX__ */ +#if defined( _AIX ) || defined( __QNX__ ) +#include <sys/select.h> +#endif /* _AIX || __QNX__ */ +#ifndef __QNX__ +#include <sys/shm.h> +#include <signal.h> +#include <sys/signal.h> +#endif /* __QNX__ */ +#include <sys/stat.h> +#include <sys/types.h> /* Verschiedene komische Typen */ +#if defined( __hpux ) && ( OS_VERSION == 9 ) +#include <vfork.h> +#endif /* __hpux 9.x, after that it's in unistd.h */ +#include <sys/wait.h> +/* #include <kitchensink.h> */ +#ifdef __QNX__ +#include <signal.h> +#include <process.h> +#endif /* __QNX__ */ +#include <errno.h> + +#include "types.h" /* for byte and u32 typedefs */ +#ifndef IS_MODULE +#include "dynload.h" +#endif +#include "util.h" + +#ifndef EAGAIN +#define EAGAIN EWOULDBLOCK +#endif +#ifndef STDIN_FILENO +#define STDIN_FILENO 0 +#endif +#ifndef STDOUT_FILENO +#define STDOUT_FILENO 1 +#endif + +#define GATHER_BUFSIZE 49152 /* Usually about 25K are filled */ + +/* The structure containing information on random-data sources. Each + * record contains the source and a relative estimate of its usefulness + * (weighting) which is used to scale the number of kB of output from the + * source (total = data_bytes / usefulness). Usually the weighting is in the + * range 1-3 (or 0 for especially useless sources), resulting in a usefulness + * rating of 1...3 for each kB of source output (or 0 for the useless + * sources). + * + * If the source is constantly changing (certain types of network statistics + * have this characteristic) but the amount of output is small, the weighting + * is given as a negative value to indicate that the output should be treated + * as if a minimum of 1K of output had been obtained. If the source produces + * a lot of output then the scale factor is fractional, resulting in a + * usefulness rating of < 1 for each kB of source output. + * + * In order to provide enough randomness to satisfy the requirements for a + * slow poll, we need to accumulate at least 20 points of usefulness (a + * typical system should get about 30 points). + * + * Some potential options are missed out because of special considerations. + * pstat -i and pstat -f can produce amazing amounts of output (the record + * is 600K on an Oracle server) which floods the buffer and doesn't yield + * anything useful (apart from perhaps increasing the entropy of the vmstat + * output a bit), so we don't bother with this. pstat in general produces + * quite a bit of output, but it doesn't change much over time, so it gets + * very low weightings. netstat -s produces constantly-changing output but + * also produces quite a bit of it, so it only gets a weighting of 2 rather + * than 3. The same holds for netstat -in, which gets 1 rather than 2. + * + * Some binaries are stored in different locations on different systems so + * alternative paths are given for them. The code sorts out which one to + * run by itself, once it finds an exectable somewhere it moves on to the + * next source. The sources are arranged roughly in their order of + * usefulness, occasionally sources which provide a tiny amount of + * relatively useless data are placed ahead of ones which provide a large + * amount of possibly useful data because another 100 bytes can't hurt, and + * it means the buffer won't be swamped by one or two high-output sources. + * All the high-output sources are clustered towards the end of the list + * for this reason. Some binaries are checked for in a certain order, for + * example under Slowaris /usr/ucb/ps understands aux as an arg, but the + * others don't. Some systems have conditional defines enabling alternatives + * to commands which don't understand the usual options but will provide + * enough output (in the form of error messages) to look like they're the + * real thing, causing alternative options to be skipped (we can't check the + * return either because some commands return peculiar, non-zero status even + * when they're working correctly). + * + * In order to maximise use of the buffer, the code performs a form of run- + * length compression on its input where a repeated sequence of bytes is + * replaced by the occurrence count mod 256. Some commands output an awful + * lot of whitespace, this measure greatly increases the amount of data we + * can fit in the buffer. + * + * When we scale the weighting using the SC() macro, some preprocessors may + * give a division by zero warning for the most obvious expression + * 'weight ? 1024 / weight : 0' (and gcc 2.7.2.2 dies with a division by zero + * trap), so we define a value SC_0 which evaluates to zero when fed to + * '1024 / SC_0' */ + +#define SC( weight ) ( 1024 / weight ) /* Scale factor */ +#define SC_0 16384 /* SC( SC_0 ) evalutes to 0 */ + +static struct RI { + const char *path; /* Path to check for existence of source */ + const char *arg; /* Args for source */ + const int usefulness; /* Usefulness of source */ + FILE *pipe; /* Pipe to source as FILE * */ + int pipeFD; /* Pipe to source as FD */ + pid_t pid; /* pid of child for waitpid() */ + int length; /* Quantity of output produced */ + const int hasAlternative; /* Whether source has alt.location */ +} dataSources[] = { + + { "/bin/vmstat", "-s", SC(-3), NULL, 0, 0, 0, 1 }, + { "/usr/bin/vmstat", "-s", SC(-3), NULL, 0, 0, 0, 0}, + { "/bin/vmstat", "-c", SC(-3), NULL, 0, 0, 0, 1 }, + { "/usr/bin/vmstat", "-c", SC(-3), NULL, 0, 0, 0, 0}, + { "/usr/bin/pfstat", NULL, SC(-2), NULL, 0, 0, 0, 0}, + { "/bin/vmstat", "-i", SC(-2), NULL, 0, 0, 0, 1 }, + { "/usr/bin/vmstat", "-i", SC(-2), NULL, 0, 0, 0, 0}, + { "/usr/ucb/netstat", "-s", SC(2), NULL, 0, 0, 0, 1 }, + { "/usr/bin/netstat", "-s", SC(2), NULL, 0, 0, 0, 1 }, + { "/usr/sbin/netstat", "-s", SC(2), NULL, 0, 0, 0, 1}, + { "/usr/etc/netstat", "-s", SC(2), NULL, 0, 0, 0, 0}, + { "/usr/bin/nfsstat", NULL, SC(2), NULL, 0, 0, 0, 0}, + { "/usr/ucb/netstat", "-m", SC(-1), NULL, 0, 0, 0, 1 }, + { "/usr/bin/netstat", "-m", SC(-1), NULL, 0, 0, 0, 1 }, + { "/usr/sbin/netstat", "-m", SC(-1), NULL, 0, 0, 0, 1 }, + { "/usr/etc/netstat", "-m", SC(-1), NULL, 0, 0, 0, 0 }, + { "/bin/netstat", "-in", SC(-1), NULL, 0, 0, 0, 1 }, + { "/usr/ucb/netstat", "-in", SC(-1), NULL, 0, 0, 0, 1 }, + { "/usr/bin/netstat", "-in", SC(-1), NULL, 0, 0, 0, 1 }, + { "/usr/sbin/netstat", "-in", SC(-1), NULL, 0, 0, 0, 1}, + { "/usr/etc/netstat", "-in", SC(-1), NULL, 0, 0, 0, 0}, + { "/usr/sbin/snmp_request", "localhost public get 1.3.6.1.2.1.7.1.0", + SC(-1), NULL, 0, 0, 0, 0 }, /* UDP in */ + { "/usr/sbin/snmp_request", "localhost public get 1.3.6.1.2.1.7.4.0", + SC(-1), NULL, 0, 0, 0, 0 }, /* UDP out */ + { "/usr/sbin/snmp_request", "localhost public get 1.3.6.1.2.1.4.3.0", + SC(-1), NULL, 0, 0, 0, 0 }, /* IP ? */ + { "/usr/sbin/snmp_request", "localhost public get 1.3.6.1.2.1.6.10.0", + SC(-1), NULL, 0, 0, 0, 0 }, /* TCP ? */ + { "/usr/sbin/snmp_request", "localhost public get 1.3.6.1.2.1.6.11.0", + SC(-1), NULL, 0, 0, 0, 0 }, /* TCP ? */ + { "/usr/sbin/snmp_request", "localhost public get 1.3.6.1.2.1.6.13.0", + SC(-1), NULL, 0, 0, 0, 0 }, /* TCP ? */ + { "/usr/bin/mpstat", NULL, SC(1), NULL, 0, 0, 0, 0 }, + { "/usr/bin/w", NULL, SC(1), NULL, 0, 0, 0, 1 }, + { "/usr/bsd/w", NULL, SC(1), NULL, 0, 0, 0, 0 }, + { "/usr/bin/df", NULL, SC(1), NULL, 0, 0, 0, 1 }, + { "/bin/df", NULL, SC(1), NULL, 0, 0, 0, 0 }, + { "/usr/sbin/portstat", NULL, SC(1), NULL, 0, 0, 0, 0 }, + { "/usr/bin/iostat", NULL, SC(SC_0), NULL, 0, 0, 0, 0 }, + { "/usr/bin/uptime", NULL, SC(SC_0), NULL, 0, 0, 0, 1 }, + { "/usr/bsd/uptime", NULL, SC(SC_0), NULL, 0, 0, 0, 0 }, + { "/bin/vmstat", "-f", SC(SC_0), NULL, 0, 0, 0, 1 }, + { "/usr/bin/vmstat", "-f", SC(SC_0), NULL, 0, 0, 0, 0 }, + { "/bin/vmstat", NULL, SC(SC_0), NULL, 0, 0, 0, 1 }, + { "/usr/bin/vmstat", NULL, SC(SC_0), NULL, 0, 0, 0, 0 }, + { "/usr/ucb/netstat", "-n", SC(0.5), NULL, 0, 0, 0, 1 }, + { "/usr/bin/netstat", "-n", SC(0.5), NULL, 0, 0, 0, 1 }, + { "/usr/sbin/netstat", "-n", SC(0.5), NULL, 0, 0, 0, 1 }, + { "/usr/etc/netstat", "-n", SC(0.5), NULL, 0, 0, 0, 0 }, +#if defined( __sgi ) || defined( __hpux ) + { "/bin/ps", "-el", SC(0.3), NULL, 0, 0, 0, 1 }, +#endif /* __sgi || __hpux */ + { "/usr/ucb/ps", "aux", SC(0.3), NULL, 0, 0, 0, 1 }, + { "/usr/bin/ps", "aux", SC(0.3), NULL, 0, 0, 0, 1 }, + { "/bin/ps", "aux", SC(0.3), NULL, 0, 0, 0, 0 }, + { "/bin/ps", "-A", SC(0.3), NULL, 0, 0, 0, 0 }, /*QNX*/ + { "/usr/bin/ipcs", "-a", SC(0.5), NULL, 0, 0, 0, 1 }, + { "/bin/ipcs", "-a", SC(0.5), NULL, 0, 0, 0, 0 }, + /* Unreliable source, depends on system usage */ + { "/etc/pstat", "-p", SC(0.5), NULL, 0, 0, 0, 1 }, + { "/bin/pstat", "-p", SC(0.5), NULL, 0, 0, 0, 0 }, + { "/etc/pstat", "-S", SC(0.2), NULL, 0, 0, 0, 1 }, + { "/bin/pstat", "-S", SC(0.2), NULL, 0, 0, 0, 0 }, + { "/etc/pstat", "-v", SC(0.2), NULL, 0, 0, 0, 1 }, + { "/bin/pstat", "-v", SC(0.2), NULL, 0, 0, 0, 0 }, + { "/etc/pstat", "-x", SC(0.2), NULL, 0, 0, 0, 1 }, + { "/bin/pstat", "-x", SC(0.2), NULL, 0, 0, 0, 0 }, + { "/etc/pstat", "-t", SC(0.1), NULL, 0, 0, 0, 1 }, + { "/bin/pstat", "-t", SC(0.1), NULL, 0, 0, 0, 0 }, + /* pstat is your friend */ + { "/usr/bin/last", "-n 50", SC(0.3), NULL, 0, 0, 0, 1 }, +#ifdef __sgi + { "/usr/bsd/last", "-50", SC(0.3), NULL, 0, 0, 0, 0 }, +#endif /* __sgi */ +#ifdef __hpux + { "/etc/last", "-50", SC(0.3), NULL, 0, 0, 0, 0 }, +#endif /* __hpux */ + { "/usr/bsd/last", "-n 50", SC(0.3), NULL, 0, 0, 0, 0 }, + { "/usr/sbin/snmp_request", "localhost public get 1.3.6.1.2.1.5.1.0", + SC(0.1), NULL, 0, 0, 0, 0 }, /* ICMP ? */ + { "/usr/sbin/snmp_request", "localhost public get 1.3.6.1.2.1.5.3.0", + SC(0.1), NULL, 0, 0, 0, 0 }, /* ICMP ? */ + { "/etc/arp", "-a", SC(0.1), NULL, 0, 0, 0, 1 }, + { "/usr/etc/arp", "-a", SC(0.1), NULL, 0, 0, 0, 1 }, + { "/usr/bin/arp", "-a", SC(0.1), NULL, 0, 0, 0, 1 }, + { "/usr/sbin/arp", "-a", SC(0.1), NULL, 0, 0, 0, 0 }, + { "/usr/sbin/ripquery", "-nw 1 127.0.0.1", + SC(0.1), NULL, 0, 0, 0, 0 }, + { "/bin/lpstat", "-t", SC(0.1), NULL, 0, 0, 0, 1 }, + { "/usr/bin/lpstat", "-t", SC(0.1), NULL, 0, 0, 0, 1 }, + { "/usr/ucb/lpstat", "-t", SC(0.1), NULL, 0, 0, 0, 0 }, + { "/usr/bin/tcpdump", "-c 5 -efvvx", SC(1), NULL, 0, 0, 0, 0 }, + /* This is very environment-dependant. If network traffic is low, it'll + * probably time out before delivering 5 packets, which is OK because + * it'll probably be fixed stuff like ARP anyway */ + { "/usr/sbin/advfsstat", "-b usr_domain", + SC(SC_0), NULL, 0, 0, 0, 0}, + { "/usr/sbin/advfsstat", "-l 2 usr_domain", + SC(0.5), NULL, 0, 0, 0, 0}, + { "/usr/sbin/advfsstat", "-p usr_domain", + SC(SC_0), NULL, 0, 0, 0, 0}, + /* This is a complex and screwball program. Some systems have things + * like rX_dmn, x = integer, for RAID systems, but the statistics are + * pretty dodgy */ +#ifdef __QNXNTO__ + { "/bin/pidin", "-F%A%B%c%d%E%I%J%K%m%M%n%N%p%P%S%s%T", SC(0.3), + NULL, 0, 0, 0, 0 }, +#endif +#if 0 + /* The following aren't enabled since they're somewhat slow and not very + * unpredictable, however they give an indication of the sort of sources + * you can use (for example the finger might be more useful on a + * firewalled internal network) */ + { "/usr/bin/finger", "@ml.media.mit.edu", SC(0.9), NULL, 0, 0, 0, 0 }, + { "/usr/local/bin/wget", "-O - http://lavarand.sgi.com/block.html", + SC(0.9), NULL, 0, 0, 0, 0 }, + { "/bin/cat", "/usr/spool/mqueue/syslog", SC(0.9), NULL, 0, 0, 0, 0 }, +#endif /* 0 */ + { NULL, NULL, 0, NULL, 0, 0, 0, 0 } +}; + +static byte *gather_buffer; /* buffer for gathering random noise */ +static int gather_buffer_size; /* size of the memory buffer */ +static uid_t gatherer_uid; + +/* The message structure used to communicate with the parent */ +typedef struct { + int usefulness; /* usefulness of data */ + int ndata; /* valid bytes in data */ + char data[500]; /* gathered data */ +} GATHER_MSG; + + +#ifndef HAVE_WAITPID +pid_t +waitpid(pid_t pid, int *statptr, int options) +{ + #ifdef HAVE_WAIT4 + return wait4(pid, statptr, options, NULL); + #else + /* If wait4 is also not available, try wait3 for SVR3 variants */ + /* Less ideal because can't actually request a specific pid */ + /* For that reason, first check to see if pid is for an */ + /* existing process. */ + int tmp_pid, dummystat;; + if (kill(pid, 0) == -1) { + errno = ECHILD; + return -1; + } + if (statptr == NULL) + statptr = &dummystat; + while (((tmp_pid = wait3(statptr, options, 0)) != pid) && + (tmp_pid != -1) && (tmp_pid != 0) && (pid != -1)) + ; + return tmp_pid; + #endif +} +#endif + + +/* Under SunOS popen() doesn't record the pid of the child process. When + * pclose() is called, instead of calling waitpid() for the correct child, it + * calls wait() repeatedly until the right child is reaped. The problem is + * that this reaps any other children that happen to have died at that + * moment, and when their pclose() comes along, the process hangs forever. + * The fix is to use a wrapper for popen()/pclose() which saves the pid in + * the dataSources structure (code adapted from GNU-libc's popen() call). + * + * Aut viam inveniam aut faciam */ + +static FILE * +my_popen(struct RI *entry) +{ + + int pipedes[2]; + FILE *stream; + + /* Create the pipe */ + if (pipe(pipedes) < 0) + return (NULL); + + /* Fork off the child ("vfork() is like an OS orgasm. All OS's want to + * do it, but most just end up faking it" - Chris Wedgwood). If your OS + * supports it, you should try to use vfork() here because it's somewhat + * more efficient */ +#if defined( sun ) || defined( __ultrix__ ) || defined( __osf__ ) || \ + defined(__hpux) + entry->pid = vfork(); +#else /* */ + entry->pid = fork(); +#endif /* Unixen which have vfork() */ + if (entry->pid == (pid_t) - 1) { + /* The fork failed */ + close(pipedes[0]); + close(pipedes[1]); + return (NULL); + } + + if (entry->pid == (pid_t) 0) { + struct passwd *passwd; + + /* We are the child. Make the read side of the pipe be stdout */ + if (dup2(pipedes[STDOUT_FILENO], STDOUT_FILENO) < 0) + exit(127); + + /* Now that everything is set up, give up our permissions to make + * sure we don't read anything sensitive. If the getpwnam() fails, + * we default to -1, which is usually nobody */ + if (gatherer_uid == (uid_t)-1 && \ + (passwd = getpwnam("nobody")) != NULL) + gatherer_uid = passwd->pw_uid; + + setuid(gatherer_uid); + + /* Close the pipe descriptors */ + close(pipedes[STDIN_FILENO]); + close(pipedes[STDOUT_FILENO]); + + /* Try and exec the program */ + execl(entry->path, entry->path, entry->arg, NULL); + + /* Die if the exec failed */ + exit(127); + } + + /* We are the parent. Close the irrelevant side of the pipe and open + * the relevant side as a new stream. Mark our side of the pipe to + * close on exec, so new children won't see it */ + close(pipedes[STDOUT_FILENO]); + +#ifdef FD_CLOEXEC + fcntl(pipedes[STDIN_FILENO], F_SETFD, FD_CLOEXEC); +#endif + + stream = fdopen(pipedes[STDIN_FILENO], "r"); + + if (stream == NULL) { + int savedErrno = errno; + + /* The stream couldn't be opened or the child structure couldn't be + * allocated. Kill the child and close the other side of the pipe */ + kill(entry->pid, SIGKILL); + if (stream == NULL) + close(pipedes[STDOUT_FILENO]); + else + fclose(stream); + + waitpid(entry->pid, NULL, 0); + + entry->pid = 0; + errno = savedErrno; + return (NULL); + } + + return (stream); +} + +static int +my_pclose(struct RI *entry) +{ + int status = 0; + + if (fclose(entry->pipe)) + return (-1); + + /* We ignore the return value from the process because some programs + * return funny values which would result in the input being discarded + * even if they executed successfully. This isn't a problem because the + * result data size threshold will filter out any programs which exit + * with a usage message without producing useful output */ + if (waitpid(entry->pid, NULL, 0) != entry->pid) + status = -1; + + entry->pipe = NULL; + entry->pid = 0; + return (status); +} + + +/* Unix slow poll (without special support for Linux) + * + * If a few of the randomness sources create a large amount of output then + * the slowPoll() stops once the buffer has been filled (but before all the + * randomness sources have been sucked dry) so that the 'usefulness' factor + * remains below the threshold. For this reason the gatherer buffer has to + * be fairly sizeable on moderately loaded systems. This is something of a + * bug since the usefulness should be influenced by the amount of output as + * well as the source type */ + + +static int +slow_poll(FILE *dbgfp, int dbgall, size_t *nbytes ) +{ + int moreSources; + struct timeval tv; + fd_set fds; + #if defined( __hpux ) + size_t maxFD = 0; + #else + int maxFD = 0; + #endif /* OS-specific brokenness */ + int bufPos, i, usefulness = 0; + + + /* Fire up each randomness source */ + FD_ZERO(&fds); + for (i = 0; dataSources[i].path != NULL; i++) { + /* Since popen() is a fairly heavy function, we check to see whether + * the executable exists before we try to run it */ + if (access(dataSources[i].path, X_OK)) { + if( dbgfp && dbgall ) + fprintf(dbgfp, "%s not present%s\n", dataSources[i].path, + dataSources[i].hasAlternative ? + ", has alternatives" : ""); + dataSources[i].pipe = NULL; + } + else + dataSources[i].pipe = my_popen(&dataSources[i]); + + if (dataSources[i].pipe != NULL) { + dataSources[i].pipeFD = fileno(dataSources[i].pipe); + if (dataSources[i].pipeFD > maxFD) + maxFD = dataSources[i].pipeFD; + #ifdef O_NONBLOCK /* Ohhh what a hack (used for Atari) */ + fcntl(dataSources[i].pipeFD, F_SETFL, O_NONBLOCK); + #endif + FD_SET(dataSources[i].pipeFD, &fds); + dataSources[i].length = 0; + + /* If there are alternatives for this command, don't try and + * execute them */ + while (dataSources[i].hasAlternative) { + if( dbgfp && dbgall ) + fprintf(dbgfp, "Skipping %s\n", dataSources[i + 1].path); + i++; + } + } + } + + + /* Suck all the data we can get from each of the sources */ + bufPos = 0; + moreSources = 1; + while (moreSources && bufPos <= gather_buffer_size) { + /* Wait for data to become available from any of the sources, with a + * timeout of 10 seconds. This adds even more randomness since data + * becomes available in a nondeterministic fashion. Kudos to HP's QA + * department for managing to ship a select() which breaks its own + * prototype */ + tv.tv_sec = 10; + tv.tv_usec = 0; + + #if defined( __hpux ) && ( OS_VERSION == 9 ) + if (select(maxFD + 1, (int *)&fds, NULL, NULL, &tv) == -1) + #else /* */ + if (select(maxFD + 1, &fds, NULL, NULL, &tv) == -1) + #endif /* __hpux */ + break; + + /* One of the sources has data available, read it into the buffer */ + for (i = 0; dataSources[i].path != NULL; i++) { + if( dataSources[i].pipe && FD_ISSET(dataSources[i].pipeFD, &fds)) { + size_t noBytes; + + if ((noBytes = fread(gather_buffer + bufPos, 1, + gather_buffer_size - bufPos, + dataSources[i].pipe)) == 0) { + if (my_pclose(&dataSources[i]) == 0) { + int total = 0; + + /* Try and estimate how much entropy we're getting + * from a data source */ + if (dataSources[i].usefulness) { + if (dataSources[i].usefulness < 0) + total = (dataSources[i].length + 999) + / -dataSources[i].usefulness; + else + total = dataSources[i].length + / dataSources[i].usefulness; + } + if( dbgfp ) + fprintf(dbgfp, + "%s %s contributed %d bytes, " + "usefulness = %d\n", dataSources[i].path, + (dataSources[i].arg != NULL) ? + dataSources[i].arg : "", + dataSources[i].length, total); + if( dataSources[i].length ) + usefulness += total; + } + dataSources[i].pipe = NULL; + } + else { + int currPos = bufPos; + int endPos = bufPos + noBytes; + + /* Run-length compress the input byte sequence */ + while (currPos < endPos) { + int ch = gather_buffer[currPos]; + + /* If it's a single byte, just copy it over */ + if (ch != gather_buffer[currPos + 1]) { + gather_buffer[bufPos++] = ch; + currPos++; + } + else { + int count = 0; + + /* It's a run of repeated bytes, replace them + * with the byte count mod 256 */ + while ((ch == gather_buffer[currPos]) + && currPos < endPos) { + count++; + currPos++; + } + gather_buffer[bufPos++] = count; + noBytes -= count - 1; + } + } + + /* Remember the number of (compressed) bytes of input we + * obtained */ + dataSources[i].length += noBytes; + } + } + } + + /* Check if there is more input available on any of the sources */ + moreSources = 0; + FD_ZERO(&fds); + for (i = 0; dataSources[i].path != NULL; i++) { + if (dataSources[i].pipe != NULL) { + FD_SET(dataSources[i].pipeFD, &fds); + moreSources = 1; + } + } + } + + if( dbgfp ) { + fprintf(dbgfp, "Got %d bytes, usefulness = %d\n", bufPos, usefulness); + fflush(dbgfp); + } + *nbytes = bufPos; + return usefulness; +} + +/**************** + * Start the gatherer process which writes messages of + * type GATHERER_MSG to pipedes + */ +static void +start_gatherer( int pipefd ) +{ + FILE *dbgfp = NULL; + int dbgall; + + { + const char *s = getenv("GNUPG_RNDUNIX_DBG"); + if( s ) { + dbgfp = (*s=='-' && !s[1])? stdout : fopen(s, "a"); + if( !dbgfp ) + g10_log_info("can't open debug file `%s': %s\n", + s, strerror(errno) ); + else + fprintf(dbgfp,"\nSTART RNDUNIX DEBUG pid=%d\n", (int)getpid()); + } + dbgall = !!getenv("GNUPG_RNDUNIX_DBGALL"); + } + /* close all files but the ones we need */ + { int nmax, n1, n2, i; + #ifdef _SC_OPEN_MAX + if( (nmax=sysconf( _SC_OPEN_MAX )) < 0 ) { + #ifdef _POSIX_OPEN_MAX + nmax = _POSIX_OPEN_MAX; + #else + nmax = 20; /* assume a reasonable value */ + #endif + } + #else + nmax = 20; /* assume a reasonable value */ + #endif + n1 = fileno( stderr ); + n2 = dbgfp? fileno( dbgfp ) : -1; + for(i=0; i < nmax; i++ ) { + if( i != n1 && i != n2 && i != pipefd ) + close(i); + } + errno = 0; + } + + + + /* Set up the buffer */ + gather_buffer_size = GATHER_BUFSIZE; + gather_buffer = malloc( gather_buffer_size ); + if( !gather_buffer ) { + g10_log_error("out of core while allocating the gatherer buffer\n"); + exit(2); + } + + /* Reset the SIGC(H)LD handler to the system default. This is necessary + * because if the program which cryptlib is a part of installs its own + * SIGC(H)LD handler, it will end up reaping the cryptlib children before + * cryptlib can. As a result, my_pclose() will call waitpid() on a + * process which has already been reaped by the installed handler and + * return an error, so the read data won't be added to the randomness + * pool. There are two types of SIGC(H)LD naming, the SysV SIGCLD and + * the BSD/Posix SIGCHLD, so we need to handle either possibility */ + #ifdef SIGCLD + signal(SIGCLD, SIG_DFL); + #else + signal(SIGCHLD, SIG_DFL); + #endif + + fclose(stderr); /* Arrghh!! It's Stuart code!! */ + + for(;;) { + GATHER_MSG msg; + size_t nbytes; + const char *p; + + msg.usefulness = slow_poll( dbgfp, dbgall, &nbytes ); + p = gather_buffer; + while( nbytes ) { + msg.ndata = nbytes > sizeof(msg.data)? sizeof(msg.data) : nbytes; + memcpy( msg.data, p, msg.ndata ); + nbytes -= msg.ndata; + p += msg.ndata; + + while( write( pipefd, &msg, sizeof(msg) ) != sizeof(msg) ) { + if( errno == EINTR ) + continue; + if( errno == EAGAIN ) { + struct timeval tv; + tv.tv_sec = 0; + tv.tv_usec = 50000; + select(0, NULL, NULL, NULL, &tv); + continue; + } + if( errno == EPIPE ) /* parent has exited, so give up */ + exit(0); + + /* we can't do very much here because stderr is closed */ + if( dbgfp ) + fprintf(dbgfp, "gatherer can't write to pipe: %s\n", + strerror(errno) ); + /* we start a new poll to give the system some time */ + nbytes = 0; + break; + } + } + } + /* we are killed when the parent dies */ +} + + +static int +read_a_msg( int fd, GATHER_MSG *msg ) +{ + char *buffer = (char*)msg; + size_t length = sizeof( *msg ); + int n; + + do { + do { + n = read(fd, buffer, length ); + } while( n == -1 && errno == EINTR ); + if( n == -1 ) + return -1; + buffer += n; + length -= n; + } while( length ); + return 0; +} + + +/**************** + * Using a level of 0 should never block and better add nothing + * to the pool. So this is just a dummy for this gatherer. + */ +static int +gather_random( void (*add)(const void*, size_t, int), int requester, + size_t length, int level ) +{ + static pid_t gatherer_pid = 0; + static int pipedes[2]; + GATHER_MSG msg; + size_t n; + + if( !level ) + return 0; + + if( !gatherer_pid ) { + /* make sure we are not setuid */ + if( getuid() != geteuid() ) + BUG(); + /* time to start the gatherer process */ + if( pipe( pipedes ) ) { + g10_log_error("pipe() failed: %s\n", strerror(errno)); + return -1; + } + gatherer_pid = fork(); + if( gatherer_pid == -1 ) { + g10_log_error("can't for gatherer process: %s\n", strerror(errno)); + return -1; + } + if( !gatherer_pid ) { + start_gatherer( pipedes[1] ); + /* oops, can't happen */ + return -1; + } + } + + /* now read from the gatherer */ + while( length ) { + int goodness; + ulong subtract; + + if( read_a_msg( pipedes[0], &msg ) ) { + g10_log_error("reading from gatherer pipe failed: %s\n", + strerror(errno)); + return -1; + } + + + if( level > 1 ) { + if( msg.usefulness > 30 ) + goodness = 100; + else if ( msg.usefulness ) + goodness = msg.usefulness * 100 / 30; + else + goodness = 0; + } + else if( level ) { + if( msg.usefulness > 15 ) + goodness = 100; + else if ( msg.usefulness ) + goodness = msg.usefulness * 100 / 15; + else + goodness = 0; + } + else + goodness = 100; /* goodness of level 0 is always 100 % */ + + n = msg.ndata; + if( n > length ) + n = length; + (*add)( msg.data, n, requester ); + + /* this is the trick how e cope with the goodness */ + subtract = (ulong)n * goodness / 100; + /* subtract at least 1 byte to avoid infinite loops */ + length -= subtract ? subtract : 1; + } + + return 0; +} + + + +#ifndef IS_MODULE +static +#endif +const char * const gnupgext_version = "RNDUNIX ($Revision$)"; + + +static struct { + int class; + int version; + int (*func)(void); +} func_table[] = { + { 40, 1, (int (*)(void))gather_random }, +}; + +/**************** + * Enumerate the names of the functions together with informations about + * this function. Set sequence to an integer with a initial value of 0 and + * do not change it. + * If what is 0 all kind of functions are returned. + * Return values: class := class of function: + * 10 = message digest algorithm info function + * 11 = integer with available md algorithms + * 20 = cipher algorithm info function + * 21 = integer with available cipher algorithms + * 30 = public key algorithm info function + * 31 = integer with available pubkey algorithms + * 40 = get read_random_source() function + * 41 = get fast_random_poll function + * version = interface version of the function/pointer + * (currently this is 1 for all functions) + */ + +#ifndef IS_MODULE +static +#endif +void * +gnupgext_enum_func( int what, int *sequence, int *class, int *vers ) +{ + void *ret; + int i = *sequence; + + do { + if ( i >= DIM(func_table) || i < 0 ) { + return NULL; + } + *class = func_table[i].class; + *vers = func_table[i].version; + ret = func_table[i].func; + i++; + } while ( what && what != *class ); + + *sequence = i; + return ret; +} + +#ifndef IS_MODULE +void +rndunix_constructor(void) +{ + register_internal_cipher_extension( gnupgext_version, + gnupgext_enum_func ); +} +#endif + + diff --git a/cipher/rndw32.c b/cipher/rndw32.c new file mode 100644 index 000000000..484b11c52 --- /dev/null +++ b/cipher/rndw32.c @@ -0,0 +1,969 @@ +/* rndw32.c - W32 entropy gatherer + * Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc. + * Copyright Peter Gutmann, Matt Thomlinson and Blake Coverett 1996-1999 + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + * + ************************************************************************* + * The code here is based on code from Cryptlib 3.0 beta by Peter Gutmann. + * Source file misc/rndwin32.c "Win32 Randomness-Gathering Code" with this + * copyright notice: + * + * This module is part of the cryptlib continuously seeded pseudorandom + * number generator. For usage conditions, see lib_rand.c + * + * [Here is the notice from lib_rand.c, which is now called dev_sys.c] + * + * This module and the misc/rnd*.c modules represent the cryptlib + * continuously seeded pseudorandom number generator (CSPRNG) as described in + * my 1998 Usenix Security Symposium paper "The generation of random numbers + * for cryptographic purposes". + * + * The CSPRNG code is copyright Peter Gutmann (and various others) 1996, + * 1997, 1998, 1999, all rights reserved. Redistribution of the CSPRNG + * modules and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice + * and this permission notice in its entirety. + * + * 2. Redistributions in binary form must reproduce the copyright notice in + * the documentation and/or other materials provided with the distribution. + * + * 3. A copy of any bugfixes or enhancements made must be provided to the + * author, <pgut001@cs.auckland.ac.nz> to allow them to be added to the + * baseline version of the code. + * + * ALTERNATIVELY, the code may be distributed under the terms of the GNU + * General Public License, version 2 or any later version published by the + * Free Software Foundation, in which case the provisions of the GNU GPL are + * required INSTEAD OF the above restrictions. + * + * Although not required under the terms of the GPL, it would still be nice if + * you could make any changes available to the author to allow a consistent + * code base to be maintained + ************************************************************************* + */ + +#include <config.h> +#include <stdio.h> +#include <stdlib.h> +#include <assert.h> +#include <errno.h> +#include <string.h> + +#include <windows.h> +#ifdef __CYGWIN32__ +# include <winioctl.h> +#endif + + +#include "types.h" +#include "util.h" +#include "dynload.h" + +/* We do not use the netropy DLL anymore because a standalone program is + * easier to maintain and */ +/*#define USE_ENTROPY_DLL*/ + + + +#ifdef IS_MODULE + #define _(a) (a) +#else + #include "i18n.h" +#endif + + +static int debug_me; + +#ifdef USE_ENTROPY_DLL + +#define WIN32_SLOW_SEEDER 0 +#define WIN32_FAST_SEEDER 1 + +#define PCP_SUCCESS 0 +#define PCP_NULL_POINTER 1 +#define PCP_SEEDER_FAILED 2 +#define PCP_SEEDER_NO_MEM 3 +#define PCP_SEEDER_TOO_SMALL 4 +#define PCP_DLL_LOAD_FAILED 5 +#define PCP_UNKNOWN_PLATFORM 6 +#define PCP_ERROR_VERSION 7 +#define PCP_DLL_FUNC 8 +#define PCP_UNKNOWN_SEEDER_TYPE 9 + + +/**************** + * We sometimes get a SEEDER_TOO_SMALL error, in which case we increment + * the internal buffer by SEEDER_INC_CHUNK until we reach MAX_SEEDER_SIZE + * MAX_SEEDER_SIZE is used as an arbitrary limit to protect against + * bugs in Winseed. + */ +#define MAX_SEEDER_SIZE 500000 +#define SEEDER_INC_CHUNK 50000 + + +typedef void *WIN32_SEEDER; + +static WIN32_SEEDER (WINAPI *create_instance)( byte type, unsigned int *reason); +static void (WINAPI *delete_instance)( WIN32_SEEDER that ); +static unsigned int (WINAPI *get_internal_seed_size)( WIN32_SEEDER that ); +static void (WINAPI *set_internal_seed_size)( WIN32_SEEDER that, + unsigned int new_size); +static unsigned int (WINAPI *get_expected_seed_size)( WIN32_SEEDER that); +static unsigned int (WINAPI *get_seed)( WIN32_SEEDER that, byte *buffer, + unsigned int *desired_length); + +static WIN32_SEEDER slow_seeder, fast_seeder; +static byte *entropy_buffer; +static size_t entropy_buffer_size; + +/**************** + * Load and initialize the winseed DLL + * NOTE: winseed is not part of the GnuPG distribution. It should be available + * at the GNU crypto FTP server site. + * We do not load the DLL on demand to have a better control over the + * location of the library. + */ +static void +load_and_init_winseed( void ) +{ + HANDLE hInstance; + void *addr; + unsigned int reason = 0; + unsigned int n1, n2; + const char *dllname; + + dllname = read_w32_registry_string( "HKEY_LOCAL_MACHINE", + "Software\\GNU\\GnuPG", + "EntropyDLL" ); + if( !dllname ) + dllname = "c:/gnupg/entropy.dll"; + + hInstance = LoadLibrary( dllname ); + if( !hInstance ) + goto failure; + if( !(addr = GetProcAddress( hInstance, "WS_create_instance" )) ) + goto failure; + create_instance = addr; + if( !(addr = GetProcAddress( hInstance, "WS_delete_instance" )) ) + goto failure; + delete_instance = addr; + if( !(addr = GetProcAddress( hInstance, "WS_get_internal_seed_size" )) ) + goto failure; + get_internal_seed_size = addr; + if( !(addr = GetProcAddress( hInstance, "WS_set_internal_seed_size" )) ) + goto failure; + set_internal_seed_size = addr; + if( !(addr = GetProcAddress( hInstance, "WS_get_expected_seed_size" )) ) + goto failure; + get_expected_seed_size = addr; + if( !(addr = GetProcAddress( hInstance, "WS_get_seed" )) ) + goto failure; + get_seed = addr; + + /* we have all the functions - init the system */ + slow_seeder = create_instance( WIN32_SLOW_SEEDER, &reason); + if( !slow_seeder ) { + g10_log_fatal("error creating winseed slow seeder: rc=%u\n", reason ); + goto failure; + } + fast_seeder = create_instance( WIN32_FAST_SEEDER, &reason); + if( !fast_seeder ) { + g10_log_fatal("error creating winseed fast seeder: rc=%u\n", reason ); + goto failure; + } + n1 = get_internal_seed_size( slow_seeder ); + /*g10_log_info("slow buffer size=%u\n", n1);*/ + n2 = get_internal_seed_size( fast_seeder ); + /*g10_log_info("fast buffer size=%u\n", n2);*/ + + entropy_buffer_size = n1 > n2? n1: n2; + entropy_buffer = m_alloc( entropy_buffer_size ); + /*g10_log_info("using a buffer of size=%u\n", entropy_buffer_size );*/ + + return; + + failure: + g10_log_fatal("error loading winseed DLL `%s'\n", dllname ); +} + + + + + +/* Note: we always use the highest level. + * TO boost the performance we may want to add some + * additional code for level 1 + */ +static int +gather_random( void (*add)(const void*, size_t, int), int requester, + size_t length, int level ) +{ + unsigned int result; + unsigned int nbytes; + + if( !level ) + return 0; + + if( !slow_seeder ) + load_and_init_winseed(); + + /* Our estimation on how much entropy we should use is very vague. + * Winseed delivers some amount of entropy on each slow poll and + * we add it to our random pool. Depending on the required quality + * level we adjust the requested length so that for higher quality + * we make sure to add more entropy to our pool. However, as we don't + * like to waste any entropy collected by winseed, we always add + * at least everything we got from winseed. + */ + if( level > 1 ) + length *= 100; + else if( level > 0 ) + length *= 10; + + for(;;) { + nbytes = entropy_buffer_size; + result = get_seed( slow_seeder, entropy_buffer, &nbytes); + if( result == PCP_SEEDER_TOO_SMALL ) { + unsigned int n1 = get_internal_seed_size( slow_seeder ); + + if( n1 > MAX_SEEDER_SIZE ) { + g10_log_fatal("rndw32: internal seeder problem (size=%u)\n", + n1); + return -1; /* actually never reached */ + } + n1 += SEEDER_INC_CHUNK; + set_internal_seed_size( slow_seeder, n1 ); + if( n1 > entropy_buffer_size ) { + entropy_buffer_size = n1; + entropy_buffer = m_realloc( entropy_buffer, + entropy_buffer_size ); + } + continue; + } + + + if( result ) { + g10_log_fatal("rndw32: get_seed(slow) failed: rc=%u\n", result); + return -1; /* actually never reached */ + } + /*g10_log_info("rndw32: slow poll level %d, need %u, got %u\n", + level, (unsigned int)length, (unsigned int)nbytes );*/ + (*add)( entropy_buffer, nbytes, requester ); + if( length <= nbytes ) + return 0; /* okay */ + length -= nbytes; + } +} + +static int +gather_random_fast( void (*add)(const void*, size_t, int), int requester ) +{ + unsigned int result; + unsigned int nbytes; + + if( !fast_seeder ) + load_and_init_winseed(); + + /* winseed delivers a constant ammount of entropy for a fast + * poll. We can simply use this and add it to the pool; no need + * a loop like it is used in the slow poll */ + nbytes = entropy_buffer_size; + result = get_seed( fast_seeder, entropy_buffer, &nbytes); + if( result ) { + g10_log_fatal("rndw32: get_seed(fast) failed: rc=%u\n", result); + return -1; /* actually never reached */ + } + /*g10_log_info("rndw32: fast poll got %u\n", (unsigned int)nbytes );*/ + (*add)( entropy_buffer, nbytes, requester ); + return 0; +} + +#else /* !USE_ENTROPY_DLL */ +/* This is the new code which does not require the entropy.dll */ + +/* + * Definitions which are missing from the current GNU Windows32Api + */ + +#ifndef TH32CS_SNAPHEAPLIST +#define TH32CS_SNAPHEAPLIST 1 +#define TH32CS_SNAPPROCESS 2 +#define TH32CS_SNAPTHREAD 4 +#define TH32CS_SNAPMODULE 8 +#define TH32CS_SNAPALL (1|2|4|8) +#define TH32CS_INHERIT 0x80000000 +#endif /*TH32CS_SNAPHEAPLIST*/ + +#ifndef IOCTL_DISK_PERFORMANCE +#define IOCTL_DISK_PERFORMANCE 0x00070020 +#endif +#ifndef VER_PLATFORM_WIN32_WINDOWS +#define VER_PLATFORM_WIN32_WINDOWS 1 +#endif + +typedef struct { + DWORD dwSize; + DWORD th32ProcessID; + DWORD th32HeapID; + DWORD dwFlags; +} HEAPLIST32; + +typedef struct { + DWORD dwSize; + HANDLE hHandle; + DWORD dwAddress; + DWORD dwBlockSize; + DWORD dwFlags; + DWORD dwLockCount; + DWORD dwResvd; + DWORD th32ProcessID; + DWORD th32HeapID; +} HEAPENTRY32; + +typedef struct { + DWORD dwSize; + DWORD cntUsage; + DWORD th32ProcessID; + DWORD th32DefaultHeapID; + DWORD th32ModuleID; + DWORD cntThreads; + DWORD th32ParentProcessID; + LONG pcPriClassBase; + DWORD dwFlags; + char szExeFile[260]; +} PROCESSENTRY32; + +typedef struct { + DWORD dwSize; + DWORD cntUsage; + DWORD th32ThreadID; + DWORD th32OwnerProcessID; + LONG tpBasePri; + LONG tpDeltaPri; + DWORD dwFlags; +} THREADENTRY32; + +typedef struct { + DWORD dwSize; + DWORD th32ModuleID; + DWORD th32ProcessID; + DWORD GlblcntUsage; + DWORD ProccntUsage; + BYTE *modBaseAddr; + DWORD modBaseSize; + HMODULE hModule; + char szModule[256]; + char szExePath[260]; +} MODULEENTRY32; + + + +/* Type definitions for function pointers to call Toolhelp32 functions + * used with the windows95 gatherer */ +typedef BOOL (WINAPI * MODULEWALK) (HANDLE hSnapshot, MODULEENTRY32 *lpme); +typedef BOOL (WINAPI * THREADWALK) (HANDLE hSnapshot, THREADENTRY32 *lpte); +typedef BOOL (WINAPI * PROCESSWALK) (HANDLE hSnapshot, PROCESSENTRY32 *lppe); +typedef BOOL (WINAPI * HEAPLISTWALK) (HANDLE hSnapshot, HEAPLIST32 *lphl); +typedef BOOL (WINAPI * HEAPFIRST) (HEAPENTRY32 *lphe, DWORD th32ProcessID, + DWORD th32HeapID); +typedef BOOL (WINAPI * HEAPNEXT) (HEAPENTRY32 *lphe); +typedef HANDLE (WINAPI * CREATESNAPSHOT) (DWORD dwFlags, DWORD th32ProcessID); + +/* Type definitions for function pointers to call NetAPI32 functions */ +typedef DWORD (WINAPI * NETSTATISTICSGET) (LPWSTR szServer, LPWSTR szService, + DWORD dwLevel, DWORD dwOptions, + LPBYTE * lpBuffer); +typedef DWORD (WINAPI * NETAPIBUFFERSIZE) (LPVOID lpBuffer, LPDWORD cbBuffer); +typedef DWORD (WINAPI * NETAPIBUFFERFREE) (LPVOID lpBuffer); + + +/* When we query the performance counters, we allocate an initial buffer and + * then reallocate it as required until RegQueryValueEx() stops returning + * ERROR_MORE_DATA. The following values define the initial buffer size and + * step size by which the buffer is increased + */ +#define PERFORMANCE_BUFFER_SIZE 65536 /* Start at 64K */ +#define PERFORMANCE_BUFFER_STEP 16384 /* Step by 16K */ + + +static void +slow_gatherer_windows95( void (*add)(const void*, size_t, int), int requester ) +{ + static CREATESNAPSHOT pCreateToolhelp32Snapshot = NULL; + static MODULEWALK pModule32First = NULL; + static MODULEWALK pModule32Next = NULL; + static PROCESSWALK pProcess32First = NULL; + static PROCESSWALK pProcess32Next = NULL; + static THREADWALK pThread32First = NULL; + static THREADWALK pThread32Next = NULL; + static HEAPLISTWALK pHeap32ListFirst = NULL; + static HEAPLISTWALK pHeap32ListNext = NULL; + static HEAPFIRST pHeap32First = NULL; + static HEAPNEXT pHeap32Next = NULL; + HANDLE hSnapshot; + + + /* initialize the Toolhelp32 function pointers */ + if ( !pCreateToolhelp32Snapshot ) { + HANDLE hKernel; + + if ( debug_me ) + log_debug ("rndw32#slow_gatherer_95: init toolkit\n" ); + + /* Obtain the module handle of the kernel to retrieve the addresses + * of the Toolhelp32 functions */ + if ( ( !(hKernel = GetModuleHandle ("KERNEL32.DLL"))) ) { + g10_log_fatal ( "rndw32: can't get module handle\n" ); + } + + /* Now get pointers to the functions */ + pCreateToolhelp32Snapshot = (CREATESNAPSHOT) GetProcAddress (hKernel, + "CreateToolhelp32Snapshot"); + pModule32First = (MODULEWALK) GetProcAddress (hKernel, "Module32First"); + pModule32Next = (MODULEWALK) GetProcAddress (hKernel, "Module32Next"); + pProcess32First = (PROCESSWALK) GetProcAddress (hKernel, + "Process32First"); + pProcess32Next = (PROCESSWALK) GetProcAddress (hKernel, + "Process32Next"); + pThread32First = (THREADWALK) GetProcAddress (hKernel, "Thread32First"); + pThread32Next = (THREADWALK) GetProcAddress (hKernel, "Thread32Next"); + pHeap32ListFirst = (HEAPLISTWALK) GetProcAddress (hKernel, + "Heap32ListFirst"); + pHeap32ListNext = (HEAPLISTWALK) GetProcAddress (hKernel, + "Heap32ListNext"); + pHeap32First = (HEAPFIRST) GetProcAddress (hKernel, "Heap32First"); + pHeap32Next = (HEAPNEXT) GetProcAddress (hKernel, "Heap32Next"); + + if ( !pCreateToolhelp32Snapshot + || !pModule32First || !pModule32Next + || !pProcess32First || !pProcess32Next + || !pThread32First || !pThread32Next + || !pHeap32ListFirst || !pHeap32ListNext + || !pHeap32First || !pHeap32Next ) { + g10_log_fatal ( "rndw32: failed to get a toolhep function\n" ); + } + } + + /* Take a snapshot of everything we can get to which is currently + * in the system */ + if ( !(hSnapshot = pCreateToolhelp32Snapshot (TH32CS_SNAPALL, 0)) ) { + g10_log_fatal ( "rndw32: failed to take a toolhelp snapshot\n" ); + } + + /* Walk through the local heap */ + { HEAPLIST32 hl32; + hl32.dwSize = sizeof (HEAPLIST32); + if (pHeap32ListFirst (hSnapshot, &hl32)) { + if ( debug_me ) + log_debug ("rndw32#slow_gatherer_95: walk heap\n" ); + do { + HEAPENTRY32 he32; + + /* First add the information from the basic Heaplist32 struct */ + (*add) ( &hl32, sizeof (hl32), requester ); + + /* Now walk through the heap blocks getting information + * on each of them */ + he32.dwSize = sizeof (HEAPENTRY32); + if (pHeap32First (&he32, hl32.th32ProcessID, hl32.th32HeapID)){ + do { + (*add) ( &he32, sizeof (he32), requester ); + } while (pHeap32Next (&he32)); + } + } while (pHeap32ListNext (hSnapshot, &hl32)); + } + } + + + /* Walk through all processes */ + { PROCESSENTRY32 pe32; + pe32.dwSize = sizeof (PROCESSENTRY32); + if (pProcess32First (hSnapshot, &pe32)) { + if ( debug_me ) + log_debug ("rndw32#slow_gatherer_95: walk processes\n" ); + do { + (*add) ( &pe32, sizeof (pe32), requester ); + } while (pProcess32Next (hSnapshot, &pe32)); + } + } + + /* Walk through all threads */ + { THREADENTRY32 te32; + te32.dwSize = sizeof (THREADENTRY32); + if (pThread32First (hSnapshot, &te32)) { + if ( debug_me ) + log_debug ("rndw32#slow_gatherer_95: walk threads\n" ); + do { + (*add) ( &te32, sizeof (te32), requester ); + } while (pThread32Next (hSnapshot, &te32)); + } + } + + /* Walk through all modules associated with the process */ + { MODULEENTRY32 me32; + me32.dwSize = sizeof (MODULEENTRY32); + if (pModule32First (hSnapshot, &me32)) { + if ( debug_me ) + log_debug ("rndw32#slow_gatherer_95: walk modules\n" ); + do { + (*add) ( &me32, sizeof (me32), requester ); + } while (pModule32Next (hSnapshot, &me32)); + } + } + + CloseHandle (hSnapshot); +} + + + +static void +slow_gatherer_windowsNT( void (*add)(const void*, size_t, int), int requester ) +{ + static int is_initialized = 0; + static NETSTATISTICSGET pNetStatisticsGet = NULL; + static NETAPIBUFFERSIZE pNetApiBufferSize = NULL; + static NETAPIBUFFERFREE pNetApiBufferFree = NULL; + static int is_workstation = 1; + + static int cbPerfData = PERFORMANCE_BUFFER_SIZE; + PERF_DATA_BLOCK *pPerfData; + HANDLE hDevice, hNetAPI32 = NULL; + DWORD dwSize, status; + int nDrive; + + if ( !is_initialized ) { + HKEY hKey; + + if ( debug_me ) + log_debug ("rndw32#slow_gatherer_nt: init toolkit\n" ); + /* Find out whether this is an NT server or workstation if necessary */ + if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, + "SYSTEM\\CurrentControlSet\\Control\\ProductOptions", + 0, KEY_READ, &hKey) == ERROR_SUCCESS) { + BYTE szValue[32]; + dwSize = sizeof (szValue); + + if ( debug_me ) + log_debug ("rndw32#slow_gatherer_nt: check product options\n" ); + status = RegQueryValueEx (hKey, "ProductType", 0, NULL, + szValue, &dwSize); + if (status == ERROR_SUCCESS + && ascii_strcasecmp (szValue, "WinNT")) { + /* Note: There are (at least) three cases for ProductType: + * WinNT = NT Workstation, ServerNT = NT Server, LanmanNT = + * NT Server acting as a Domain Controller */ + is_workstation = 0; + if ( debug_me ) + log_debug ("rndw32: this is a NT server\n"); + } + RegCloseKey (hKey); + } + + /* Initialize the NetAPI32 function pointers if necessary */ + if ( (hNetAPI32 = LoadLibrary ("NETAPI32.DLL")) ) { + if ( debug_me ) + log_debug ("rndw32#slow_gatherer_nt: netapi32 loaded\n" ); + pNetStatisticsGet = (NETSTATISTICSGET) GetProcAddress (hNetAPI32, + "NetStatisticsGet"); + pNetApiBufferSize = (NETAPIBUFFERSIZE) GetProcAddress (hNetAPI32, + "NetApiBufferSize"); + pNetApiBufferFree = (NETAPIBUFFERFREE) GetProcAddress (hNetAPI32, + "NetApiBufferFree"); + + if ( !pNetStatisticsGet + || !pNetApiBufferSize || !pNetApiBufferFree ) { + FreeLibrary (hNetAPI32); + hNetAPI32 = NULL; + g10_log_debug ("rndw32: No NETAPI found\n" ); + } + } + + is_initialized = 1; + } + + /* Get network statistics. Note: Both NT Workstation and NT Server by + * default will be running both the workstation and server services. The + * heuristic below is probably useful though on the assumption that the + * majority of the network traffic will be via the appropriate service. + * In any case the network statistics return almost no randomness */ + { LPBYTE lpBuffer; + if (hNetAPI32 && !pNetStatisticsGet (NULL, + is_workstation ? L"LanmanWorkstation" : + L"LanmanServer", 0, 0, &lpBuffer) ) { + if ( debug_me ) + log_debug ("rndw32#slow_gatherer_nt: get netstats\n" ); + pNetApiBufferSize (lpBuffer, &dwSize); + (*add) ( lpBuffer, dwSize,requester ); + pNetApiBufferFree (lpBuffer); + } + } + + /* Get disk I/O statistics for all the hard drives */ + for (nDrive = 0;; nDrive++) { + DISK_PERFORMANCE diskPerformance; + char szDevice[50]; + + /* Check whether we can access this device */ + sprintf (szDevice, "\\\\.\\PhysicalDrive%d", nDrive); + hDevice = CreateFile (szDevice, 0, FILE_SHARE_READ | FILE_SHARE_WRITE, + NULL, OPEN_EXISTING, 0, NULL); + if (hDevice == INVALID_HANDLE_VALUE) + break; + + /* Note: This only works if you have turned on the disk performance + * counters with 'diskperf -y'. These counters are off by default */ + if (DeviceIoControl (hDevice, IOCTL_DISK_PERFORMANCE, NULL, 0, + &diskPerformance, sizeof (DISK_PERFORMANCE), + &dwSize, NULL)) + { + if ( debug_me ) + log_debug ("rndw32#slow_gatherer_nt: iostats drive %d\n", + nDrive ); + (*add) ( &diskPerformance, dwSize, requester ); + } + else { + log_info ("NOTE: you should run 'diskperf -y' " + "to enable the disk statistics\n"); + } + CloseHandle (hDevice); + } + + #if 0 /* we don't need this in GnuPG */ + /* Wait for any async keyset driver binding to complete. You may be + * wondering what this call is doing here... the reason it's necessary is + * because RegQueryValueEx() will hang indefinitely if the async driver + * bind is in progress. The problem occurs in the dynamic loading and + * linking of driver DLL's, which work as follows: + * + * hDriver = LoadLibrary( DRIVERNAME ); + * pFunction1 = ( TYPE_FUNC1 ) GetProcAddress( hDriver, NAME_FUNC1 ); + * pFunction2 = ( TYPE_FUNC1 ) GetProcAddress( hDriver, NAME_FUNC2 ); + * + * If RegQueryValueEx() is called while the GetProcAddress()'s are in + * progress, it will hang indefinitely. This is probably due to some + * synchronisation problem in the NT kernel where the GetProcAddress() + * calls affect something like a module reference count or function + * reference count while RegQueryValueEx() is trying to take a snapshot + * of the statistics, which include the reference counts. Because of + * this, we have to wait until any async driver bind has completed + * before we can call RegQueryValueEx() */ + waitSemaphore (SEMAPHORE_DRIVERBIND); + #endif + + /* Get information from the system performance counters. This can take + * a few seconds to do. In some environments the call to + * RegQueryValueEx() can produce an access violation at some random time + * in the future, adding a short delay after the following code block + * makes the problem go away. This problem is extremely difficult to + * reproduce, I haven't been able to get it to occur despite running it + * on a number of machines. The best explanation for the problem is that + * on the machine where it did occur, it was caused by an external driver + * or other program which adds its own values under the + * HKEY_PERFORMANCE_DATA key. The NT kernel calls the required external + * modules to map in the data, if there's a synchronisation problem the + * external module would write its data at an inappropriate moment, + * causing the access violation. A low-level memory checker indicated + * that ExpandEnvironmentStrings() in KERNEL32.DLL, called an + * interminable number of calls down inside RegQueryValueEx(), was + * overwriting memory (it wrote twice the allocated size of a buffer to a + * buffer allocated by the NT kernel). This may be what's causing the + * problem, but since it's in the kernel there isn't much which can be + * done. + * + * In addition to these problems the code in RegQueryValueEx() which + * estimates the amount of memory required to return the performance + * counter information isn't very accurate, since it always returns a + * worst-case estimate which is usually nowhere near the actual amount + * required. For example it may report that 128K of memory is required, + * but only return 64K of data */ + { pPerfData = m_alloc (cbPerfData); + for (;;) { + dwSize = cbPerfData; + if ( debug_me ) + log_debug ("rndw32#slow_gatherer_nt: get perf data\n" ); + status = RegQueryValueEx (HKEY_PERFORMANCE_DATA, "Global", NULL, + NULL, (LPBYTE) pPerfData, &dwSize); + if (status == ERROR_SUCCESS) { + if (!memcmp (pPerfData->Signature, L"PERF", 8)) { + (*add) ( pPerfData, dwSize, requester ); + } + else + g10_log_debug ( "rndw32: no PERF signature\n"); + break; + } + else if (status == ERROR_MORE_DATA) { + cbPerfData += PERFORMANCE_BUFFER_STEP; + pPerfData = m_realloc (pPerfData, cbPerfData); + } + else { + g10_log_debug ( "rndw32: get performance data problem\n"); + break; + } + } + m_free (pPerfData); + } + /* Although this isn't documented in the Win32 API docs, it's necessary + to explicitly close the HKEY_PERFORMANCE_DATA key after use (it's + implicitly opened on the first call to RegQueryValueEx()). If this + isn't done then any system components which provide performance data + can't be removed or changed while the handle remains active */ + RegCloseKey (HKEY_PERFORMANCE_DATA); +} + + +static int +gather_random( void (*add)(const void*, size_t, int), int requester, + size_t length, int level ) +{ + static int is_initialized; + static int is_windowsNT, has_toolhelp; + + + if( !level ) + return 0; + /* We don't differentiate between level 1 and 2 here because + * there is no nternal entropy pool as a scary resource. It may + * all work slower, but because our entropy source will never + * block but deliver some not easy to measure entropy, we assume level 2 + */ + + + if ( !is_initialized ) { + OSVERSIONINFO osvi = { sizeof( osvi ) }; + DWORD platform; + + GetVersionEx( &osvi ); + platform = osvi.dwPlatformId; + is_windowsNT = platform == VER_PLATFORM_WIN32_NT; + has_toolhelp = (platform == VER_PLATFORM_WIN32_WINDOWS + || (is_windowsNT && osvi.dwMajorVersion >= 5)); + + if ( platform == VER_PLATFORM_WIN32s ) { + g10_log_fatal("can't run on a W32s platform\n" ); + } + is_initialized = 1; + if ( debug_me ) + log_debug ("rndw32#gather_random: platform=%d\n", (int)platform ); + } + + + if ( debug_me ) + log_debug ("rndw32#gather_random: req=%d len=%u lvl=%d\n", + requester, (unsigned int)length, level ); + + if ( has_toolhelp ) { + slow_gatherer_windows95 ( add, requester ); + } + if ( is_windowsNT ) { + slow_gatherer_windowsNT ( add, requester ); + } + + return 0; +} + + + +static int +gather_random_fast( void (*add)(const void*, size_t, int), int requester ) +{ + static int addedFixedItems = 0; + + if ( debug_me ) + log_debug ("rndw32#gather_random_fast: req=%d\n", requester ); + + /* Get various basic pieces of system information: Handle of active + * window, handle of window with mouse capture, handle of clipboard owner + * handle of start of clpboard viewer list, pseudohandle of current + * process, current process ID, pseudohandle of current thread, current + * thread ID, handle of desktop window, handle of window with keyboard + * focus, whether system queue has any events, cursor position for last + * message, 1 ms time for last message, handle of window with clipboard + * open, handle of process heap, handle of procs window station, types of + * events in input queue, and milliseconds since Windows was started */ + { byte buffer[20*sizeof(ulong)], *bufptr; + bufptr = buffer; + #define ADD(f) do { ulong along = (ulong)(f); \ + memcpy (bufptr, &along, sizeof (along) ); \ + bufptr += sizeof (along); } while (0) + ADD ( GetActiveWindow ()); + ADD ( GetCapture ()); + ADD ( GetClipboardOwner ()); + ADD ( GetClipboardViewer ()); + ADD ( GetCurrentProcess ()); + ADD ( GetCurrentProcessId ()); + ADD ( GetCurrentThread ()); + ADD ( GetCurrentThreadId ()); + ADD ( GetDesktopWindow ()); + ADD ( GetFocus ()); + ADD ( GetInputState ()); + ADD ( GetMessagePos ()); + ADD ( GetMessageTime ()); + ADD ( GetOpenClipboardWindow ()); + ADD ( GetProcessHeap ()); + ADD ( GetProcessWindowStation ()); + ADD ( GetQueueStatus (QS_ALLEVENTS)); + ADD ( GetTickCount ()); + + assert ( bufptr-buffer < sizeof (buffer) ); + (*add) ( buffer, bufptr-buffer, requester ); + #undef ADD + } + + /* Get multiword system information: Current caret position, current + * mouse cursor position */ + { POINT point; + GetCaretPos (&point); + (*add) ( &point, sizeof (point), requester ); + GetCursorPos (&point); + (*add) ( &point, sizeof (point), requester ); + } + + /* Get percent of memory in use, bytes of physical memory, bytes of free + * physical memory, bytes in paging file, free bytes in paging file, user + * bytes of address space, and free user bytes */ + { MEMORYSTATUS memoryStatus; + memoryStatus.dwLength = sizeof (MEMORYSTATUS); + GlobalMemoryStatus (&memoryStatus); + (*add) ( &memoryStatus, sizeof (memoryStatus), requester ); + } + + /* Get thread and process creation time, exit time, time in kernel mode, + and time in user mode in 100ns intervals */ + { HANDLE handle; + FILETIME creationTime, exitTime, kernelTime, userTime; + DWORD minimumWorkingSetSize, maximumWorkingSetSize; + + handle = GetCurrentThread (); + GetThreadTimes (handle, &creationTime, &exitTime, + &kernelTime, &userTime); + (*add) ( &creationTime, sizeof (creationTime), requester ); + (*add) ( &exitTime, sizeof (exitTime), requester ); + (*add) ( &kernelTime, sizeof (kernelTime), requester ); + (*add) ( &userTime, sizeof (userTime), requester ); + + handle = GetCurrentProcess (); + GetProcessTimes (handle, &creationTime, &exitTime, + &kernelTime, &userTime); + (*add) ( &creationTime, sizeof (creationTime), requester ); + (*add) ( &exitTime, sizeof (exitTime), requester ); + (*add) ( &kernelTime, sizeof (kernelTime), requester ); + (*add) ( &userTime, sizeof (userTime), requester ); + + /* Get the minimum and maximum working set size for the current process */ + GetProcessWorkingSetSize (handle, &minimumWorkingSetSize, + &maximumWorkingSetSize); + (*add) ( &minimumWorkingSetSize, + sizeof (&minimumWorkingSetSize), requester ); + (*add) ( &maximumWorkingSetSize, + sizeof (&maximumWorkingSetSize), requester ); + } + + + /* The following are fixed for the lifetime of the process so we only + * add them once */ + if (!addedFixedItems) { + STARTUPINFO startupInfo; + + /* Get name of desktop, console window title, new window position and + * size, window flags, and handles for stdin, stdout, and stderr */ + startupInfo.cb = sizeof (STARTUPINFO); + GetStartupInfo (&startupInfo); + (*add) ( &startupInfo, sizeof (STARTUPINFO), requester ); + addedFixedItems = 1; + } + + /* The performance of QPC varies depending on the architecture it's + * running on and on the OS. Under NT it reads the CPU's 64-bit timestamp + * counter (at least on a Pentium and newer '486's, it hasn't been tested + * on anything without a TSC), under Win95 it reads the 1.193180 MHz PIC + * timer. There are vague mumblings in the docs that it may fail if the + * appropriate hardware isn't available (possibly '386's or MIPS machines + * running NT), but who's going to run NT on a '386? */ + { LARGE_INTEGER performanceCount; + if (QueryPerformanceCounter (&performanceCount)) { + if ( debug_me ) + log_debug ("rndw32#gather_random_fast: perf data\n"); + (*add) (&performanceCount, sizeof (&performanceCount), requester); + } + else { /* Millisecond accuracy at best... */ + DWORD aword = GetTickCount (); + (*add) (&aword, sizeof (aword), requester ); + } + } + + return 0; +} + + + + + +#endif /* !USE_ENTROPY_DLL */ + + +#ifndef IS_MODULE +static +#endif +const char * const gnupgext_version = "RNDW32 ($Revision$)"; + +static struct { + int class; + int version; + void *func; +} func_table[] = { + { 40, 1, gather_random }, + { 41, 1, gather_random_fast }, +}; + + +#ifndef IS_MODULE +static +#endif +void * +gnupgext_enum_func( int what, int *sequence, int *class, int *vers ) +{ + void *ret; + int i = *sequence; + + debug_me = !!getenv("DEBUG_RNDW32"); + + do { + if ( i >= DIM(func_table) || i < 0 ) { + return NULL; + } + *class = func_table[i].class; + *vers = func_table[i].version; + ret = func_table[i].func; + i++; + } while ( what && what != *class ); + + *sequence = i; + return ret; +} + +#ifndef IS_MODULE +void +rndw32_constructor(void) +{ + register_internal_cipher_extension( gnupgext_version, + gnupgext_enum_func ); +} +#endif + diff --git a/cipher/rsa.c b/cipher/rsa.c new file mode 100644 index 000000000..e438b39cf --- /dev/null +++ b/cipher/rsa.c @@ -0,0 +1,494 @@ +/* rsa.c - RSA function + * Copyright (C) 1997, 1998, 1999 by Werner Koch (dd9jn) + * Copyright (C) 2000, 2001 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + +/* This code uses an algorithm protected by U.S. Patent #4,405,829 + which expires on September 20, 2000. The patent holder placed that + patent into the public domain on Sep 6th, 2000. +*/ + +#include <config.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include "util.h" +#include "mpi.h" +#include "cipher.h" +#include "rsa.h" + + +typedef struct { + MPI n; /* modulus */ + MPI e; /* exponent */ +} RSA_public_key; + + +typedef struct { + MPI n; /* public modulus */ + MPI e; /* public exponent */ + MPI d; /* exponent */ + MPI p; /* prime p. */ + MPI q; /* prime q. */ + MPI u; /* inverse of p mod q. */ +} RSA_secret_key; + + +static void test_keys( RSA_secret_key *sk, unsigned nbits ); +static void generate( RSA_secret_key *sk, unsigned nbits ); +static int check_secret_key( RSA_secret_key *sk ); +static void public(MPI output, MPI input, RSA_public_key *skey ); +static void secret(MPI output, MPI input, RSA_secret_key *skey ); + + +static void +test_keys( RSA_secret_key *sk, unsigned nbits ) +{ + RSA_public_key pk; + MPI test = mpi_alloc( (nbits+BITS_PER_MPI_LIMB-1)/BITS_PER_MPI_LIMB ); + MPI out1 = mpi_alloc( (nbits+BITS_PER_MPI_LIMB-1)/BITS_PER_MPI_LIMB ); + MPI out2 = mpi_alloc( (nbits+BITS_PER_MPI_LIMB-1)/BITS_PER_MPI_LIMB ); + + pk.n = sk->n; + pk.e = sk->e; + { char *p = get_random_bits( nbits, 0, 0 ); + mpi_set_buffer( test, p, (nbits+7)/8, 0 ); + m_free(p); + } + + public( out1, test, &pk ); + secret( out2, out1, sk ); + if( mpi_cmp( test, out2 ) ) + log_fatal("RSA operation: public, secret failed\n"); + secret( out1, test, sk ); + public( out2, out1, &pk ); + if( mpi_cmp( test, out2 ) ) + log_fatal("RSA operation: secret, public failed\n"); + mpi_free( test ); + mpi_free( out1 ); + mpi_free( out2 ); +} + +/**************** + * Generate a key pair with a key of size NBITS + * Returns: 2 structures filled with all needed values + */ +static void +generate( RSA_secret_key *sk, unsigned nbits ) +{ + MPI p, q; /* the two primes */ + MPI d; /* the private key */ + MPI u; + MPI t1, t2; + MPI n; /* the public key */ + MPI e; /* the exponent */ + MPI phi; /* helper: (p-1)(q-1) */ + MPI g; + MPI f; + + /* make sure that nbits is even so that we generate p, q of equal size */ + if ( (nbits&1) ) + nbits++; + + n = mpi_alloc( (nbits+BITS_PER_MPI_LIMB-1)/BITS_PER_MPI_LIMB ); + + p = q = NULL; + do { + /* select two (very secret) primes */ + if (p) + mpi_free (p); + if (q) + mpi_free (q); + p = generate_secret_prime( nbits / 2 ); + q = generate_secret_prime( nbits / 2 ); + if( mpi_cmp( p, q ) > 0 ) /* p shall be smaller than q (for calc of u)*/ + mpi_swap(p,q); + /* calculate the modulus */ + mpi_mul( n, p, q ); + } while ( mpi_get_nbits(n) != nbits ); + + /* calculate Euler totient: phi = (p-1)(q-1) */ + t1 = mpi_alloc_secure( mpi_get_nlimbs(p) ); + t2 = mpi_alloc_secure( mpi_get_nlimbs(p) ); + phi = mpi_alloc_secure( (nbits+BITS_PER_MPI_LIMB-1)/BITS_PER_MPI_LIMB ); + g = mpi_alloc_secure( (nbits+BITS_PER_MPI_LIMB-1)/BITS_PER_MPI_LIMB ); + f = mpi_alloc_secure( (nbits+BITS_PER_MPI_LIMB-1)/BITS_PER_MPI_LIMB ); + mpi_sub_ui( t1, p, 1 ); + mpi_sub_ui( t2, q, 1 ); + mpi_mul( phi, t1, t2 ); + mpi_gcd(g, t1, t2); + mpi_fdiv_q(f, phi, g); + + /* find an public exponent. + We use 41 as this is quite fast and more secure than the + commonly used 17. Benchmarking the RSA verify function + with a 1024 bit key yields (2001-11-08): + e=17 0.54 ms + e=41 0.75 ms + e=257 0.95 ms + e=65537 1.80 ms + */ + e = mpi_alloc( (32+BITS_PER_MPI_LIMB-1)/BITS_PER_MPI_LIMB ); + mpi_set_ui( e, 41); + if( !mpi_gcd(t1, e, phi) ) { + mpi_set_ui( e, 257); + if( !mpi_gcd(t1, e, phi) ) { + mpi_set_ui( e, 65537); + while( !mpi_gcd(t1, e, phi) ) /* (while gcd is not 1) */ + mpi_add_ui( e, e, 2); + } + } + + /* calculate the secret key d = e^1 mod phi */ + d = mpi_alloc( (nbits+BITS_PER_MPI_LIMB-1)/BITS_PER_MPI_LIMB ); + mpi_invm(d, e, f ); + /* calculate the inverse of p and q (used for chinese remainder theorem)*/ + u = mpi_alloc( (nbits+BITS_PER_MPI_LIMB-1)/BITS_PER_MPI_LIMB ); + mpi_invm(u, p, q ); + + if( DBG_CIPHER ) { + log_mpidump(" p= ", p ); + log_mpidump(" q= ", q ); + log_mpidump("phi= ", phi ); + log_mpidump(" g= ", g ); + log_mpidump(" f= ", f ); + log_mpidump(" n= ", n ); + log_mpidump(" e= ", e ); + log_mpidump(" d= ", d ); + log_mpidump(" u= ", u ); + } + + mpi_free(t1); + mpi_free(t2); + mpi_free(phi); + mpi_free(f); + mpi_free(g); + + sk->n = n; + sk->e = e; + sk->p = p; + sk->q = q; + sk->d = d; + sk->u = u; + + /* now we can test our keys (this should never fail!) */ + test_keys( sk, nbits - 64 ); +} + + +/**************** + * Test wether the secret key is valid. + * Returns: true if this is a valid key. + */ +static int +check_secret_key( RSA_secret_key *sk ) +{ + int rc; + MPI temp = mpi_alloc( mpi_get_nlimbs(sk->p)*2 ); + + mpi_mul(temp, sk->p, sk->q ); + rc = mpi_cmp( temp, sk->n ); + mpi_free(temp); + return !rc; +} + + + +/**************** + * Public key operation. Encrypt INPUT with PKEY and put result into OUTPUT. + * + * c = m^e mod n + * + * Where c is OUTPUT, m is INPUT and e,n are elements of PKEY. + */ +static void +public(MPI output, MPI input, RSA_public_key *pkey ) +{ + if( output == input ) { /* powm doesn't like output and input the same */ + MPI x = mpi_alloc( mpi_get_nlimbs(input)*2 ); + mpi_powm( x, input, pkey->e, pkey->n ); + mpi_set(output, x); + mpi_free(x); + } + else + mpi_powm( output, input, pkey->e, pkey->n ); +} + +#if 0 +static void +stronger_key_check ( RSA_secret_key *skey ) +{ + MPI t = mpi_alloc_secure ( 0 ); + MPI t1 = mpi_alloc_secure ( 0 ); + MPI t2 = mpi_alloc_secure ( 0 ); + MPI phi = mpi_alloc_secure ( 0 ); + + /* check that n == p * q */ + mpi_mul( t, skey->p, skey->q); + if (mpi_cmp( t, skey->n) ) + log_info ( "RSA Oops: n != p * q\n" ); + + /* check that p is less than q */ + if( mpi_cmp( skey->p, skey->q ) > 0 ) + log_info ("RSA Oops: p >= q\n"); + + + /* check that e divides neither p-1 nor q-1 */ + mpi_sub_ui(t, skey->p, 1 ); + mpi_fdiv_r(t, t, skey->e ); + if ( !mpi_cmp_ui( t, 0) ) + log_info ( "RSA Oops: e divides p-1\n" ); + mpi_sub_ui(t, skey->q, 1 ); + mpi_fdiv_r(t, t, skey->e ); + if ( !mpi_cmp_ui( t, 0) ) + log_info ( "RSA Oops: e divides q-1\n" ); + + /* check that d is correct */ + mpi_sub_ui( t1, skey->p, 1 ); + mpi_sub_ui( t2, skey->q, 1 ); + mpi_mul( phi, t1, t2 ); + mpi_gcd(t, t1, t2); + mpi_fdiv_q(t, phi, t); + mpi_invm(t, skey->e, t ); + if ( mpi_cmp(t, skey->d ) ) + log_info ( "RSA Oops: d is wrong\n"); + + /* check for crrectness of u */ + mpi_invm(t, skey->p, skey->q ); + if ( mpi_cmp(t, skey->u ) ) + log_info ( "RSA Oops: u is wrong\n"); + + log_info ( "RSA secret key check finished\n"); + + mpi_free (t); + mpi_free (t1); + mpi_free (t2); + mpi_free (phi); +} +#endif + + +/**************** + * Secret key operation. Encrypt INPUT with SKEY and put result into OUTPUT. + * + * m = c^d mod n + * + * Or faster: + * + * m1 = c ^ (d mod (p-1)) mod p + * m2 = c ^ (d mod (q-1)) mod q + * h = u * (m2 - m1) mod q + * m = m1 + h * p + * + * Where m is OUTPUT, c is INPUT and d,n,p,q,u are elements of SKEY. + */ +static void +secret(MPI output, MPI input, RSA_secret_key *skey ) +{ + #if 0 + mpi_powm( output, input, skey->d, skey->n ); + #else + MPI m1 = mpi_alloc_secure( mpi_get_nlimbs(skey->n)+1 ); + MPI m2 = mpi_alloc_secure( mpi_get_nlimbs(skey->n)+1 ); + MPI h = mpi_alloc_secure( mpi_get_nlimbs(skey->n)+1 ); + + /* m1 = c ^ (d mod (p-1)) mod p */ + mpi_sub_ui( h, skey->p, 1 ); + mpi_fdiv_r( h, skey->d, h ); + mpi_powm( m1, input, h, skey->p ); + /* m2 = c ^ (d mod (q-1)) mod q */ + mpi_sub_ui( h, skey->q, 1 ); + mpi_fdiv_r( h, skey->d, h ); + mpi_powm( m2, input, h, skey->q ); + /* h = u * ( m2 - m1 ) mod q */ + mpi_sub( h, m2, m1 ); + if ( mpi_is_neg( h ) ) + mpi_add ( h, h, skey->q ); + mpi_mulm( h, skey->u, h, skey->q ); + /* m = m2 + h * p */ + mpi_mul ( h, h, skey->p ); + mpi_add ( output, m1, h ); + /* ready */ + + mpi_free ( h ); + mpi_free ( m1 ); + mpi_free ( m2 ); + #endif +} + + +/********************************************* + ************** interface ****************** + *********************************************/ + +int +rsa_generate( int algo, unsigned nbits, MPI *skey, MPI **retfactors ) +{ + RSA_secret_key sk; + + if( !is_RSA(algo) ) + return G10ERR_PUBKEY_ALGO; + + generate( &sk, nbits ); + skey[0] = sk.n; + skey[1] = sk.e; + skey[2] = sk.d; + skey[3] = sk.p; + skey[4] = sk.q; + skey[5] = sk.u; + /* make an empty list of factors */ + *retfactors = m_alloc_clear( 1 * sizeof **retfactors ); + return 0; +} + + +int +rsa_check_secret_key( int algo, MPI *skey ) +{ + RSA_secret_key sk; + + if( !is_RSA(algo) ) + return G10ERR_PUBKEY_ALGO; + + sk.n = skey[0]; + sk.e = skey[1]; + sk.d = skey[2]; + sk.p = skey[3]; + sk.q = skey[4]; + sk.u = skey[5]; + if( !check_secret_key( &sk ) ) + return G10ERR_BAD_SECKEY; + + return 0; +} + + + +int +rsa_encrypt( int algo, MPI *resarr, MPI data, MPI *pkey ) +{ + RSA_public_key pk; + + if( algo != 1 && algo != 2 ) + return G10ERR_PUBKEY_ALGO; + + pk.n = pkey[0]; + pk.e = pkey[1]; + resarr[0] = mpi_alloc( mpi_get_nlimbs( pk.n ) ); + public( resarr[0], data, &pk ); + return 0; +} + +int +rsa_decrypt( int algo, MPI *result, MPI *data, MPI *skey ) +{ + RSA_secret_key sk; + + if( algo != 1 && algo != 2 ) + return G10ERR_PUBKEY_ALGO; + + sk.n = skey[0]; + sk.e = skey[1]; + sk.d = skey[2]; + sk.p = skey[3]; + sk.q = skey[4]; + sk.u = skey[5]; + *result = mpi_alloc_secure( mpi_get_nlimbs( sk.n ) ); + secret( *result, data[0], &sk ); + return 0; +} + +int +rsa_sign( int algo, MPI *resarr, MPI data, MPI *skey ) +{ + RSA_secret_key sk; + + if( algo != 1 && algo != 3 ) + return G10ERR_PUBKEY_ALGO; + + sk.n = skey[0]; + sk.e = skey[1]; + sk.d = skey[2]; + sk.p = skey[3]; + sk.q = skey[4]; + sk.u = skey[5]; + resarr[0] = mpi_alloc( mpi_get_nlimbs( sk.n ) ); + secret( resarr[0], data, &sk ); + + return 0; +} + +int +rsa_verify( int algo, MPI hash, MPI *data, MPI *pkey, + int (*cmp)(void *opaque, MPI tmp), void *opaquev ) +{ + RSA_public_key pk; + MPI result; + int rc; + + if( algo != 1 && algo != 3 ) + return G10ERR_PUBKEY_ALGO; + pk.n = pkey[0]; + pk.e = pkey[1]; + result = mpi_alloc( (160+BITS_PER_MPI_LIMB-1)/BITS_PER_MPI_LIMB); + public( result, data[0], &pk ); + /*rc = (*cmp)( opaquev, result );*/ + rc = mpi_cmp( result, hash )? G10ERR_BAD_SIGN:0; + mpi_free(result); + + return rc; +} + + +unsigned int +rsa_get_nbits( int algo, MPI *pkey ) +{ + if( !is_RSA(algo) ) + return 0; + return mpi_get_nbits( pkey[0] ); +} + + +/**************** + * Return some information about the algorithm. We need algo here to + * distinguish different flavors of the algorithm. + * Returns: A pointer to string describing the algorithm or NULL if + * the ALGO is invalid. + * Usage: Bit 0 set : allows signing + * 1 set : allows encryption + */ +const char * +rsa_get_info( int algo, + int *npkey, int *nskey, int *nenc, int *nsig, int *r_usage ) +{ + *npkey = 2; + *nskey = 6; + *nenc = 1; + *nsig = 1; + + switch( algo ) { + case 1: *r_usage = PUBKEY_USAGE_SIG | PUBKEY_USAGE_ENC; return "RSA"; + case 2: *r_usage = PUBKEY_USAGE_ENC; return "RSA-E"; + case 3: *r_usage = PUBKEY_USAGE_SIG; return "RSA-S"; + default:*r_usage = 0; return NULL; + } +} + + + diff --git a/cipher/rsa.h b/cipher/rsa.h new file mode 100644 index 000000000..350a373ec --- /dev/null +++ b/cipher/rsa.h @@ -0,0 +1,36 @@ +/* rsa.h + * Copyright (C) 1997,1998 by Werner Koch (dd9jn) + * Copyright (C) 2000, 2001 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ +#ifndef G10_RSA_H +#define G10_RSA_H + +int rsa_generate( int algo, unsigned nbits, MPI *skey, MPI **retfactors ); +int rsa_check_secret_key( int algo, MPI *skey ); +int rsa_encrypt( int algo, MPI *resarr, MPI data, MPI *pkey ); +int rsa_decrypt( int algo, MPI *result, MPI *data, MPI *skey ); +int rsa_sign( int algo, MPI *resarr, MPI data, MPI *skey ); +int rsa_verify( int algo, MPI hash, MPI *data, MPI *pkey, + int (*cmp)(void *, MPI), void *opaquev ); +unsigned rsa_get_nbits( int algo, MPI *pkey ); +const char *rsa_get_info( int algo, int *npkey, int *nskey, + int *nenc, int *nsig, int *use ); + + +#endif /*G10_RSA_H*/ diff --git a/cipher/sha1.c b/cipher/sha1.c new file mode 100644 index 000000000..77749e4ee --- /dev/null +++ b/cipher/sha1.c @@ -0,0 +1,425 @@ +/* sha1.c - SHA1 hash function + * Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc. + * + * Please see below for more legal information! + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + + +/* Test vectors: + * + * "abc" + * A999 3E36 4706 816A BA3E 2571 7850 C26C 9CD0 D89D + * + * "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq" + * 8498 3E44 1C3B D26E BAAE 4AA1 F951 29E5 E546 70F1 + */ + + +#include <config.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include "util.h" +#include "memory.h" +#include "dynload.h" +#include "bithelp.h" + + +typedef struct { + u32 h0,h1,h2,h3,h4; + u32 nblocks; + byte buf[64]; + int count; +} SHA1_CONTEXT; + +static void +burn_stack (int bytes) +{ + char buf[128]; + + memset (buf, 0, sizeof buf); + bytes -= sizeof buf; + if (bytes > 0) + burn_stack (bytes); +} + + +void +sha1_init( SHA1_CONTEXT *hd ) +{ + hd->h0 = 0x67452301; + hd->h1 = 0xefcdab89; + hd->h2 = 0x98badcfe; + hd->h3 = 0x10325476; + hd->h4 = 0xc3d2e1f0; + hd->nblocks = 0; + hd->count = 0; +} + + +/**************** + * Transform the message X which consists of 16 32-bit-words + */ +static void +transform( SHA1_CONTEXT *hd, byte *data ) +{ + u32 a,b,c,d,e,tm; + u32 x[16]; + + /* get values from the chaining vars */ + a = hd->h0; + b = hd->h1; + c = hd->h2; + d = hd->h3; + e = hd->h4; + + #ifdef BIG_ENDIAN_HOST + memcpy( x, data, 64 ); + #else + { int i; + byte *p2; + for(i=0, p2=(byte*)x; i < 16; i++, p2 += 4 ) { + p2[3] = *data++; + p2[2] = *data++; + p2[1] = *data++; + p2[0] = *data++; + } + } + #endif + + +#define K1 0x5A827999L +#define K2 0x6ED9EBA1L +#define K3 0x8F1BBCDCL +#define K4 0xCA62C1D6L +#define F1(x,y,z) ( z ^ ( x & ( y ^ z ) ) ) +#define F2(x,y,z) ( x ^ y ^ z ) +#define F3(x,y,z) ( ( x & y ) | ( z & ( x | y ) ) ) +#define F4(x,y,z) ( x ^ y ^ z ) + + +#define M(i) ( tm = x[i&0x0f] ^ x[(i-14)&0x0f] \ + ^ x[(i-8)&0x0f] ^ x[(i-3)&0x0f] \ + , (x[i&0x0f] = rol(tm,1)) ) + +#define R(a,b,c,d,e,f,k,m) do { e += rol( a, 5 ) \ + + f( b, c, d ) \ + + k \ + + m; \ + b = rol( b, 30 ); \ + } while(0) + R( a, b, c, d, e, F1, K1, x[ 0] ); + R( e, a, b, c, d, F1, K1, x[ 1] ); + R( d, e, a, b, c, F1, K1, x[ 2] ); + R( c, d, e, a, b, F1, K1, x[ 3] ); + R( b, c, d, e, a, F1, K1, x[ 4] ); + R( a, b, c, d, e, F1, K1, x[ 5] ); + R( e, a, b, c, d, F1, K1, x[ 6] ); + R( d, e, a, b, c, F1, K1, x[ 7] ); + R( c, d, e, a, b, F1, K1, x[ 8] ); + R( b, c, d, e, a, F1, K1, x[ 9] ); + R( a, b, c, d, e, F1, K1, x[10] ); + R( e, a, b, c, d, F1, K1, x[11] ); + R( d, e, a, b, c, F1, K1, x[12] ); + R( c, d, e, a, b, F1, K1, x[13] ); + R( b, c, d, e, a, F1, K1, x[14] ); + R( a, b, c, d, e, F1, K1, x[15] ); + R( e, a, b, c, d, F1, K1, M(16) ); + R( d, e, a, b, c, F1, K1, M(17) ); + R( c, d, e, a, b, F1, K1, M(18) ); + R( b, c, d, e, a, F1, K1, M(19) ); + R( a, b, c, d, e, F2, K2, M(20) ); + R( e, a, b, c, d, F2, K2, M(21) ); + R( d, e, a, b, c, F2, K2, M(22) ); + R( c, d, e, a, b, F2, K2, M(23) ); + R( b, c, d, e, a, F2, K2, M(24) ); + R( a, b, c, d, e, F2, K2, M(25) ); + R( e, a, b, c, d, F2, K2, M(26) ); + R( d, e, a, b, c, F2, K2, M(27) ); + R( c, d, e, a, b, F2, K2, M(28) ); + R( b, c, d, e, a, F2, K2, M(29) ); + R( a, b, c, d, e, F2, K2, M(30) ); + R( e, a, b, c, d, F2, K2, M(31) ); + R( d, e, a, b, c, F2, K2, M(32) ); + R( c, d, e, a, b, F2, K2, M(33) ); + R( b, c, d, e, a, F2, K2, M(34) ); + R( a, b, c, d, e, F2, K2, M(35) ); + R( e, a, b, c, d, F2, K2, M(36) ); + R( d, e, a, b, c, F2, K2, M(37) ); + R( c, d, e, a, b, F2, K2, M(38) ); + R( b, c, d, e, a, F2, K2, M(39) ); + R( a, b, c, d, e, F3, K3, M(40) ); + R( e, a, b, c, d, F3, K3, M(41) ); + R( d, e, a, b, c, F3, K3, M(42) ); + R( c, d, e, a, b, F3, K3, M(43) ); + R( b, c, d, e, a, F3, K3, M(44) ); + R( a, b, c, d, e, F3, K3, M(45) ); + R( e, a, b, c, d, F3, K3, M(46) ); + R( d, e, a, b, c, F3, K3, M(47) ); + R( c, d, e, a, b, F3, K3, M(48) ); + R( b, c, d, e, a, F3, K3, M(49) ); + R( a, b, c, d, e, F3, K3, M(50) ); + R( e, a, b, c, d, F3, K3, M(51) ); + R( d, e, a, b, c, F3, K3, M(52) ); + R( c, d, e, a, b, F3, K3, M(53) ); + R( b, c, d, e, a, F3, K3, M(54) ); + R( a, b, c, d, e, F3, K3, M(55) ); + R( e, a, b, c, d, F3, K3, M(56) ); + R( d, e, a, b, c, F3, K3, M(57) ); + R( c, d, e, a, b, F3, K3, M(58) ); + R( b, c, d, e, a, F3, K3, M(59) ); + R( a, b, c, d, e, F4, K4, M(60) ); + R( e, a, b, c, d, F4, K4, M(61) ); + R( d, e, a, b, c, F4, K4, M(62) ); + R( c, d, e, a, b, F4, K4, M(63) ); + R( b, c, d, e, a, F4, K4, M(64) ); + R( a, b, c, d, e, F4, K4, M(65) ); + R( e, a, b, c, d, F4, K4, M(66) ); + R( d, e, a, b, c, F4, K4, M(67) ); + R( c, d, e, a, b, F4, K4, M(68) ); + R( b, c, d, e, a, F4, K4, M(69) ); + R( a, b, c, d, e, F4, K4, M(70) ); + R( e, a, b, c, d, F4, K4, M(71) ); + R( d, e, a, b, c, F4, K4, M(72) ); + R( c, d, e, a, b, F4, K4, M(73) ); + R( b, c, d, e, a, F4, K4, M(74) ); + R( a, b, c, d, e, F4, K4, M(75) ); + R( e, a, b, c, d, F4, K4, M(76) ); + R( d, e, a, b, c, F4, K4, M(77) ); + R( c, d, e, a, b, F4, K4, M(78) ); + R( b, c, d, e, a, F4, K4, M(79) ); + + /* update chainig vars */ + hd->h0 += a; + hd->h1 += b; + hd->h2 += c; + hd->h3 += d; + hd->h4 += e; +} + + +/* Update the message digest with the contents + * of INBUF with length INLEN. + */ +static void +sha1_write( SHA1_CONTEXT *hd, byte *inbuf, size_t inlen) +{ + if( hd->count == 64 ) { /* flush the buffer */ + transform( hd, hd->buf ); + burn_stack (88+4*sizeof(void*)); + hd->count = 0; + hd->nblocks++; + } + if( !inbuf ) + return; + if( hd->count ) { + for( ; inlen && hd->count < 64; inlen-- ) + hd->buf[hd->count++] = *inbuf++; + sha1_write( hd, NULL, 0 ); + if( !inlen ) + return; + } + + while( inlen >= 64 ) { + transform( hd, inbuf ); + hd->count = 0; + hd->nblocks++; + inlen -= 64; + inbuf += 64; + } + burn_stack (88+4*sizeof(void*)); + for( ; inlen && hd->count < 64; inlen-- ) + hd->buf[hd->count++] = *inbuf++; +} + + +/* The routine final terminates the computation and + * returns the digest. + * The handle is prepared for a new cycle, but adding bytes to the + * handle will the destroy the returned buffer. + * Returns: 20 bytes representing the digest. + */ + +static void +sha1_final(SHA1_CONTEXT *hd) +{ + u32 t, msb, lsb; + byte *p; + + sha1_write(hd, NULL, 0); /* flush */; + + t = hd->nblocks; + /* multiply by 64 to make a byte count */ + lsb = t << 6; + msb = t >> 26; + /* add the count */ + t = lsb; + if( (lsb += hd->count) < t ) + msb++; + /* multiply by 8 to make a bit count */ + t = lsb; + lsb <<= 3; + msb <<= 3; + msb |= t >> 29; + + if( hd->count < 56 ) { /* enough room */ + hd->buf[hd->count++] = 0x80; /* pad */ + while( hd->count < 56 ) + hd->buf[hd->count++] = 0; /* pad */ + } + else { /* need one extra block */ + hd->buf[hd->count++] = 0x80; /* pad character */ + while( hd->count < 64 ) + hd->buf[hd->count++] = 0; + sha1_write(hd, NULL, 0); /* flush */; + memset(hd->buf, 0, 56 ); /* fill next block with zeroes */ + } + /* append the 64 bit count */ + hd->buf[56] = msb >> 24; + hd->buf[57] = msb >> 16; + hd->buf[58] = msb >> 8; + hd->buf[59] = msb ; + hd->buf[60] = lsb >> 24; + hd->buf[61] = lsb >> 16; + hd->buf[62] = lsb >> 8; + hd->buf[63] = lsb ; + transform( hd, hd->buf ); + burn_stack (88+4*sizeof(void*)); + + p = hd->buf; + #ifdef BIG_ENDIAN_HOST + #define X(a) do { *(u32*)p = hd->h##a ; p += 4; } while(0) + #else /* little endian */ + #define X(a) do { *p++ = hd->h##a >> 24; *p++ = hd->h##a >> 16; \ + *p++ = hd->h##a >> 8; *p++ = hd->h##a; } while(0) + #endif + X(0); + X(1); + X(2); + X(3); + X(4); + #undef X + +} + +static byte * +sha1_read( SHA1_CONTEXT *hd ) +{ + return hd->buf; +} + +/**************** + * Return some information about the algorithm. We need algo here to + * distinguish different flavors of the algorithm. + * Returns: A pointer to string describing the algorithm or NULL if + * the ALGO is invalid. + */ +static const char * +sha1_get_info( int algo, size_t *contextsize, + byte **r_asnoid, int *r_asnlen, int *r_mdlen, + void (**r_init)( void *c ), + void (**r_write)( void *c, byte *buf, size_t nbytes ), + void (**r_final)( void *c ), + byte *(**r_read)( void *c ) + ) +{ + static byte asn[15] = /* Object ID is 1.3.14.3.2.26 */ + { 0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x0e, 0x03, + 0x02, 0x1a, 0x05, 0x00, 0x04, 0x14 }; + if( algo != 2 ) + return NULL; + + *contextsize = sizeof(SHA1_CONTEXT); + *r_asnoid = asn; + *r_asnlen = DIM(asn); + *r_mdlen = 20; + *(void (**)(SHA1_CONTEXT *))r_init = sha1_init; + *(void (**)(SHA1_CONTEXT *, byte*, size_t))r_write = sha1_write; + *(void (**)(SHA1_CONTEXT *))r_final = sha1_final; + *(byte *(**)(SHA1_CONTEXT *))r_read = sha1_read; + + return "SHA1"; +} + + + +#ifndef IS_MODULE +static +#endif +const char * const gnupgext_version = "SHA1 ($Revision$)"; + +static struct { + int class; + int version; + int value; + void (*func)(void); +} func_table[] = { + { 10, 1, 0, (void(*)(void))sha1_get_info }, + { 11, 1, 2 }, +}; + + +#ifndef IS_MODULE +static +#endif +void * +gnupgext_enum_func( int what, int *sequence, int *class, int *vers ) +{ + void *ret; + int i = *sequence; + + do { + if( i >= DIM(func_table) || i < 0 ) { + return NULL; + } + *class = func_table[i].class; + *vers = func_table[i].version; + switch( *class ) { + case 11: + case 21: + case 31: + ret = &func_table[i].value; + break; + default: +#ifndef __riscos__ + ret = func_table[i].func; +#else /* __riscos__ */ + ret = (void *) func_table[i].func; +#endif /* __riscos__ */ + break; + } + i++; + } while( what && what != *class ); + + *sequence = i; + return ret; +} + + + + +#ifndef IS_MODULE +void +sha1_constructor(void) +{ + register_internal_cipher_extension( gnupgext_version, gnupgext_enum_func ); +} +#endif + diff --git a/cipher/smallprime.c b/cipher/smallprime.c new file mode 100644 index 000000000..941f4ce9a --- /dev/null +++ b/cipher/smallprime.c @@ -0,0 +1,114 @@ +/* smallprime.c - List of small primes + * Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + +#include <config.h> +#include <stdio.h> +#include <stdlib.h> +#include "util.h" +#include "types.h" + +/* Note: 2 is not included because it can be tested more easily + * by looking at bit 0. The last entry in this list is marked by a zero + */ +ushort +small_prime_numbers[] = { + 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, + 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, + 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, + 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, + 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, + 269, 271, 277, 281, 283, 293, 307, 311, 313, 317, + 331, 337, 347, 349, 353, 359, 367, 373, 379, 383, + 389, 397, 401, 409, 419, 421, 431, 433, 439, 443, + 449, 457, 461, 463, 467, 479, 487, 491, 499, 503, + 509, 521, 523, 541, 547, 557, 563, 569, 571, 577, + 587, 593, 599, 601, 607, 613, 617, 619, 631, 641, + 643, 647, 653, 659, 661, 673, 677, 683, 691, 701, + 709, 719, 727, 733, 739, 743, 751, 757, 761, 769, + 773, 787, 797, 809, 811, 821, 823, 827, 829, 839, + 853, 857, 859, 863, 877, 881, 883, 887, 907, 911, + 919, 929, 937, 941, 947, 953, 967, 971, 977, 983, + 991, 997, 1009, 1013, 1019, 1021, 1031, 1033, + 1039, 1049, 1051, 1061, 1063, 1069, 1087, 1091, + 1093, 1097, 1103, 1109, 1117, 1123, 1129, 1151, + 1153, 1163, 1171, 1181, 1187, 1193, 1201, 1213, + 1217, 1223, 1229, 1231, 1237, 1249, 1259, 1277, + 1279, 1283, 1289, 1291, 1297, 1301, 1303, 1307, + 1319, 1321, 1327, 1361, 1367, 1373, 1381, 1399, + 1409, 1423, 1427, 1429, 1433, 1439, 1447, 1451, + 1453, 1459, 1471, 1481, 1483, 1487, 1489, 1493, + 1499, 1511, 1523, 1531, 1543, 1549, 1553, 1559, + 1567, 1571, 1579, 1583, 1597, 1601, 1607, 1609, + 1613, 1619, 1621, 1627, 1637, 1657, 1663, 1667, + 1669, 1693, 1697, 1699, 1709, 1721, 1723, 1733, + 1741, 1747, 1753, 1759, 1777, 1783, 1787, 1789, + 1801, 1811, 1823, 1831, 1847, 1861, 1867, 1871, + 1873, 1877, 1879, 1889, 1901, 1907, 1913, 1931, + 1933, 1949, 1951, 1973, 1979, 1987, 1993, 1997, + 1999, 2003, 2011, 2017, 2027, 2029, 2039, 2053, + 2063, 2069, 2081, 2083, 2087, 2089, 2099, 2111, + 2113, 2129, 2131, 2137, 2141, 2143, 2153, 2161, + 2179, 2203, 2207, 2213, 2221, 2237, 2239, 2243, + 2251, 2267, 2269, 2273, 2281, 2287, 2293, 2297, + 2309, 2311, 2333, 2339, 2341, 2347, 2351, 2357, + 2371, 2377, 2381, 2383, 2389, 2393, 2399, 2411, + 2417, 2423, 2437, 2441, 2447, 2459, 2467, 2473, + 2477, 2503, 2521, 2531, 2539, 2543, 2549, 2551, + 2557, 2579, 2591, 2593, 2609, 2617, 2621, 2633, + 2647, 2657, 2659, 2663, 2671, 2677, 2683, 2687, + 2689, 2693, 2699, 2707, 2711, 2713, 2719, 2729, + 2731, 2741, 2749, 2753, 2767, 2777, 2789, 2791, + 2797, 2801, 2803, 2819, 2833, 2837, 2843, 2851, + 2857, 2861, 2879, 2887, 2897, 2903, 2909, 2917, + 2927, 2939, 2953, 2957, 2963, 2969, 2971, 2999, + 3001, 3011, 3019, 3023, 3037, 3041, 3049, 3061, + 3067, 3079, 3083, 3089, 3109, 3119, 3121, 3137, + 3163, 3167, 3169, 3181, 3187, 3191, 3203, 3209, + 3217, 3221, 3229, 3251, 3253, 3257, 3259, 3271, + 3299, 3301, 3307, 3313, 3319, 3323, 3329, 3331, + 3343, 3347, 3359, 3361, 3371, 3373, 3389, 3391, + 3407, 3413, 3433, 3449, 3457, 3461, 3463, 3467, + 3469, 3491, 3499, 3511, 3517, 3527, 3529, 3533, + 3539, 3541, 3547, 3557, 3559, 3571, 3581, 3583, + 3593, 3607, 3613, 3617, 3623, 3631, 3637, 3643, + 3659, 3671, 3673, 3677, 3691, 3697, 3701, 3709, + 3719, 3727, 3733, 3739, 3761, 3767, 3769, 3779, + 3793, 3797, 3803, 3821, 3823, 3833, 3847, 3851, + 3853, 3863, 3877, 3881, 3889, 3907, 3911, 3917, + 3919, 3923, 3929, 3931, 3943, 3947, 3967, 3989, + 4001, 4003, 4007, 4013, 4019, 4021, 4027, 4049, + 4051, 4057, 4073, 4079, 4091, 4093, 4099, 4111, + 4127, 4129, 4133, 4139, 4153, 4157, 4159, 4177, + 4201, 4211, 4217, 4219, 4229, 4231, 4241, 4243, + 4253, 4259, 4261, 4271, 4273, 4283, 4289, 4297, + 4327, 4337, 4339, 4349, 4357, 4363, 4373, 4391, + 4397, 4409, 4421, 4423, 4441, 4447, 4451, 4457, + 4463, 4481, 4483, 4493, 4507, 4513, 4517, 4519, + 4523, 4547, 4549, 4561, 4567, 4583, 4591, 4597, + 4603, 4621, 4637, 4639, 4643, 4649, 4651, 4657, + 4663, 4673, 4679, 4691, 4703, 4721, 4723, 4729, + 4733, 4751, 4759, 4783, 4787, 4789, 4793, 4799, + 4801, 4813, 4817, 4831, 4861, 4871, 4877, 4889, + 4903, 4909, 4919, 4931, 4933, 4937, 4943, 4951, + 4957, 4967, 4969, 4973, 4987, 4993, 4999, + 0 +}; + + diff --git a/cipher/tiger.c b/cipher/tiger.c new file mode 100644 index 000000000..6da715d48 --- /dev/null +++ b/cipher/tiger.c @@ -0,0 +1,1008 @@ +/* tiger.c - The TIGER hash function + * Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + +#include <config.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include "util.h" +#include "memory.h" + + +#ifdef HAVE_U64_TYPEDEF + +/* we really need it here, but as this is only experiment we + * can live without Tiger */ + +typedef struct { + u64 a, b, c; + byte buf[64]; + int count; + u32 nblocks; +} TIGER_CONTEXT; + + +/********************************* + * Okay, okay, this is not the fastest code - improvements are welcome. + * + */ + +/* Some test vectors: + * "" 24F0130C63AC9332 16166E76B1BB925F F373DE2D49584E7A + * "abc" F258C1E88414AB2A 527AB541FFC5B8BF 935F7B951C132951 + * "Tiger" 9F00F599072300DD 276ABB38C8EB6DEC 37790C116F9D2BDF + * "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+-" + * 87FB2A9083851CF7 470D2CF810E6DF9E B586445034A5A386 + * "ABCDEFGHIJKLMNOPQRSTUVWXYZ=abcdefghijklmnopqrstuvwxyz+0123456789" + * 467DB80863EBCE48 8DF1CD1261655DE9 57896565975F9197 + * "Tiger - A Fast New Hash Function, by Ross Anderson and Eli Biham" + * 0C410A042968868A 1671DA5A3FD29A72 5EC1E457D3CDB303 + * "Tiger - A Fast New Hash Function, by Ross Anderson and Eli Biham, proc" + * "eedings of Fast Software Encryption 3, Cambridge." + * EBF591D5AFA655CE 7F22894FF87F54AC 89C811B6B0DA3193 + * "Tiger - A Fast New Hash Function, by Ross Anderson and Eli Biham, proc" + * "eedings of Fast Software Encryption 3, Cambridge, 1996." + * 3D9AEB03D1BD1A63 57B2774DFD6D5B24 DD68151D503974FC + * "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+-ABCDEF" + * "GHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+-" + * 00B83EB4E53440C5 76AC6AAEE0A74858 25FD15E70A59FFE4 + */ + + +static u64 sbox1[256] = { + 0x02aab17cf7e90c5eLL /* 0 */, 0xac424b03e243a8ecLL /* 1 */, + 0x72cd5be30dd5fcd3LL /* 2 */, 0x6d019b93f6f97f3aLL /* 3 */, + 0xcd9978ffd21f9193LL /* 4 */, 0x7573a1c9708029e2LL /* 5 */, + 0xb164326b922a83c3LL /* 6 */, 0x46883eee04915870LL /* 7 */, + 0xeaace3057103ece6LL /* 8 */, 0xc54169b808a3535cLL /* 9 */, + 0x4ce754918ddec47cLL /* 10 */, 0x0aa2f4dfdc0df40cLL /* 11 */, + 0x10b76f18a74dbefaLL /* 12 */, 0xc6ccb6235ad1ab6aLL /* 13 */, + 0x13726121572fe2ffLL /* 14 */, 0x1a488c6f199d921eLL /* 15 */, + 0x4bc9f9f4da0007caLL /* 16 */, 0x26f5e6f6e85241c7LL /* 17 */, + 0x859079dbea5947b6LL /* 18 */, 0x4f1885c5c99e8c92LL /* 19 */, + 0xd78e761ea96f864bLL /* 20 */, 0x8e36428c52b5c17dLL /* 21 */, + 0x69cf6827373063c1LL /* 22 */, 0xb607c93d9bb4c56eLL /* 23 */, + 0x7d820e760e76b5eaLL /* 24 */, 0x645c9cc6f07fdc42LL /* 25 */, + 0xbf38a078243342e0LL /* 26 */, 0x5f6b343c9d2e7d04LL /* 27 */, + 0xf2c28aeb600b0ec6LL /* 28 */, 0x6c0ed85f7254bcacLL /* 29 */, + 0x71592281a4db4fe5LL /* 30 */, 0x1967fa69ce0fed9fLL /* 31 */, + 0xfd5293f8b96545dbLL /* 32 */, 0xc879e9d7f2a7600bLL /* 33 */, + 0x860248920193194eLL /* 34 */, 0xa4f9533b2d9cc0b3LL /* 35 */, + 0x9053836c15957613LL /* 36 */, 0xdb6dcf8afc357bf1LL /* 37 */, + 0x18beea7a7a370f57LL /* 38 */, 0x037117ca50b99066LL /* 39 */, + 0x6ab30a9774424a35LL /* 40 */, 0xf4e92f02e325249bLL /* 41 */, + 0x7739db07061ccae1LL /* 42 */, 0xd8f3b49ceca42a05LL /* 43 */, + 0xbd56be3f51382f73LL /* 44 */, 0x45faed5843b0bb28LL /* 45 */, + 0x1c813d5c11bf1f83LL /* 46 */, 0x8af0e4b6d75fa169LL /* 47 */, + 0x33ee18a487ad9999LL /* 48 */, 0x3c26e8eab1c94410LL /* 49 */, + 0xb510102bc0a822f9LL /* 50 */, 0x141eef310ce6123bLL /* 51 */, + 0xfc65b90059ddb154LL /* 52 */, 0xe0158640c5e0e607LL /* 53 */, + 0x884e079826c3a3cfLL /* 54 */, 0x930d0d9523c535fdLL /* 55 */, + 0x35638d754e9a2b00LL /* 56 */, 0x4085fccf40469dd5LL /* 57 */, + 0xc4b17ad28be23a4cLL /* 58 */, 0xcab2f0fc6a3e6a2eLL /* 59 */, + 0x2860971a6b943fcdLL /* 60 */, 0x3dde6ee212e30446LL /* 61 */, + 0x6222f32ae01765aeLL /* 62 */, 0x5d550bb5478308feLL /* 63 */, + 0xa9efa98da0eda22aLL /* 64 */, 0xc351a71686c40da7LL /* 65 */, + 0x1105586d9c867c84LL /* 66 */, 0xdcffee85fda22853LL /* 67 */, + 0xccfbd0262c5eef76LL /* 68 */, 0xbaf294cb8990d201LL /* 69 */, + 0xe69464f52afad975LL /* 70 */, 0x94b013afdf133e14LL /* 71 */, + 0x06a7d1a32823c958LL /* 72 */, 0x6f95fe5130f61119LL /* 73 */, + 0xd92ab34e462c06c0LL /* 74 */, 0xed7bde33887c71d2LL /* 75 */, + 0x79746d6e6518393eLL /* 76 */, 0x5ba419385d713329LL /* 77 */, + 0x7c1ba6b948a97564LL /* 78 */, 0x31987c197bfdac67LL /* 79 */, + 0xde6c23c44b053d02LL /* 80 */, 0x581c49fed002d64dLL /* 81 */, + 0xdd474d6338261571LL /* 82 */, 0xaa4546c3e473d062LL /* 83 */, + 0x928fce349455f860LL /* 84 */, 0x48161bbacaab94d9LL /* 85 */, + 0x63912430770e6f68LL /* 86 */, 0x6ec8a5e602c6641cLL /* 87 */, + 0x87282515337ddd2bLL /* 88 */, 0x2cda6b42034b701bLL /* 89 */, + 0xb03d37c181cb096dLL /* 90 */, 0xe108438266c71c6fLL /* 91 */, + 0x2b3180c7eb51b255LL /* 92 */, 0xdf92b82f96c08bbcLL /* 93 */, + 0x5c68c8c0a632f3baLL /* 94 */, 0x5504cc861c3d0556LL /* 95 */, + 0xabbfa4e55fb26b8fLL /* 96 */, 0x41848b0ab3baceb4LL /* 97 */, + 0xb334a273aa445d32LL /* 98 */, 0xbca696f0a85ad881LL /* 99 */, + 0x24f6ec65b528d56cLL /* 100 */, 0x0ce1512e90f4524aLL /* 101 */, + 0x4e9dd79d5506d35aLL /* 102 */, 0x258905fac6ce9779LL /* 103 */, + 0x2019295b3e109b33LL /* 104 */, 0xf8a9478b73a054ccLL /* 105 */, + 0x2924f2f934417eb0LL /* 106 */, 0x3993357d536d1bc4LL /* 107 */, + 0x38a81ac21db6ff8bLL /* 108 */, 0x47c4fbf17d6016bfLL /* 109 */, + 0x1e0faadd7667e3f5LL /* 110 */, 0x7abcff62938beb96LL /* 111 */, + 0xa78dad948fc179c9LL /* 112 */, 0x8f1f98b72911e50dLL /* 113 */, + 0x61e48eae27121a91LL /* 114 */, 0x4d62f7ad31859808LL /* 115 */, + 0xeceba345ef5ceaebLL /* 116 */, 0xf5ceb25ebc9684ceLL /* 117 */, + 0xf633e20cb7f76221LL /* 118 */, 0xa32cdf06ab8293e4LL /* 119 */, + 0x985a202ca5ee2ca4LL /* 120 */, 0xcf0b8447cc8a8fb1LL /* 121 */, + 0x9f765244979859a3LL /* 122 */, 0xa8d516b1a1240017LL /* 123 */, + 0x0bd7ba3ebb5dc726LL /* 124 */, 0xe54bca55b86adb39LL /* 125 */, + 0x1d7a3afd6c478063LL /* 126 */, 0x519ec608e7669eddLL /* 127 */, + 0x0e5715a2d149aa23LL /* 128 */, 0x177d4571848ff194LL /* 129 */, + 0xeeb55f3241014c22LL /* 130 */, 0x0f5e5ca13a6e2ec2LL /* 131 */, + 0x8029927b75f5c361LL /* 132 */, 0xad139fabc3d6e436LL /* 133 */, + 0x0d5df1a94ccf402fLL /* 134 */, 0x3e8bd948bea5dfc8LL /* 135 */, + 0xa5a0d357bd3ff77eLL /* 136 */, 0xa2d12e251f74f645LL /* 137 */, + 0x66fd9e525e81a082LL /* 138 */, 0x2e0c90ce7f687a49LL /* 139 */, + 0xc2e8bcbeba973bc5LL /* 140 */, 0x000001bce509745fLL /* 141 */, + 0x423777bbe6dab3d6LL /* 142 */, 0xd1661c7eaef06eb5LL /* 143 */, + 0xa1781f354daacfd8LL /* 144 */, 0x2d11284a2b16affcLL /* 145 */, + 0xf1fc4f67fa891d1fLL /* 146 */, 0x73ecc25dcb920adaLL /* 147 */, + 0xae610c22c2a12651LL /* 148 */, 0x96e0a810d356b78aLL /* 149 */, + 0x5a9a381f2fe7870fLL /* 150 */, 0xd5ad62ede94e5530LL /* 151 */, + 0xd225e5e8368d1427LL /* 152 */, 0x65977b70c7af4631LL /* 153 */, + 0x99f889b2de39d74fLL /* 154 */, 0x233f30bf54e1d143LL /* 155 */, + 0x9a9675d3d9a63c97LL /* 156 */, 0x5470554ff334f9a8LL /* 157 */, + 0x166acb744a4f5688LL /* 158 */, 0x70c74caab2e4aeadLL /* 159 */, + 0xf0d091646f294d12LL /* 160 */, 0x57b82a89684031d1LL /* 161 */, + 0xefd95a5a61be0b6bLL /* 162 */, 0x2fbd12e969f2f29aLL /* 163 */, + 0x9bd37013feff9fe8LL /* 164 */, 0x3f9b0404d6085a06LL /* 165 */, + 0x4940c1f3166cfe15LL /* 166 */, 0x09542c4dcdf3defbLL /* 167 */, + 0xb4c5218385cd5ce3LL /* 168 */, 0xc935b7dc4462a641LL /* 169 */, + 0x3417f8a68ed3b63fLL /* 170 */, 0xb80959295b215b40LL /* 171 */, + 0xf99cdaef3b8c8572LL /* 172 */, 0x018c0614f8fcb95dLL /* 173 */, + 0x1b14accd1a3acdf3LL /* 174 */, 0x84d471f200bb732dLL /* 175 */, + 0xc1a3110e95e8da16LL /* 176 */, 0x430a7220bf1a82b8LL /* 177 */, + 0xb77e090d39df210eLL /* 178 */, 0x5ef4bd9f3cd05e9dLL /* 179 */, + 0x9d4ff6da7e57a444LL /* 180 */, 0xda1d60e183d4a5f8LL /* 181 */, + 0xb287c38417998e47LL /* 182 */, 0xfe3edc121bb31886LL /* 183 */, + 0xc7fe3ccc980ccbefLL /* 184 */, 0xe46fb590189bfd03LL /* 185 */, + 0x3732fd469a4c57dcLL /* 186 */, 0x7ef700a07cf1ad65LL /* 187 */, + 0x59c64468a31d8859LL /* 188 */, 0x762fb0b4d45b61f6LL /* 189 */, + 0x155baed099047718LL /* 190 */, 0x68755e4c3d50baa6LL /* 191 */, + 0xe9214e7f22d8b4dfLL /* 192 */, 0x2addbf532eac95f4LL /* 193 */, + 0x32ae3909b4bd0109LL /* 194 */, 0x834df537b08e3450LL /* 195 */, + 0xfa209da84220728dLL /* 196 */, 0x9e691d9b9efe23f7LL /* 197 */, + 0x0446d288c4ae8d7fLL /* 198 */, 0x7b4cc524e169785bLL /* 199 */, + 0x21d87f0135ca1385LL /* 200 */, 0xcebb400f137b8aa5LL /* 201 */, + 0x272e2b66580796beLL /* 202 */, 0x3612264125c2b0deLL /* 203 */, + 0x057702bdad1efbb2LL /* 204 */, 0xd4babb8eacf84be9LL /* 205 */, + 0x91583139641bc67bLL /* 206 */, 0x8bdc2de08036e024LL /* 207 */, + 0x603c8156f49f68edLL /* 208 */, 0xf7d236f7dbef5111LL /* 209 */, + 0x9727c4598ad21e80LL /* 210 */, 0xa08a0896670a5fd7LL /* 211 */, + 0xcb4a8f4309eba9cbLL /* 212 */, 0x81af564b0f7036a1LL /* 213 */, + 0xc0b99aa778199abdLL /* 214 */, 0x959f1ec83fc8e952LL /* 215 */, + 0x8c505077794a81b9LL /* 216 */, 0x3acaaf8f056338f0LL /* 217 */, + 0x07b43f50627a6778LL /* 218 */, 0x4a44ab49f5eccc77LL /* 219 */, + 0x3bc3d6e4b679ee98LL /* 220 */, 0x9cc0d4d1cf14108cLL /* 221 */, + 0x4406c00b206bc8a0LL /* 222 */, 0x82a18854c8d72d89LL /* 223 */, + 0x67e366b35c3c432cLL /* 224 */, 0xb923dd61102b37f2LL /* 225 */, + 0x56ab2779d884271dLL /* 226 */, 0xbe83e1b0ff1525afLL /* 227 */, + 0xfb7c65d4217e49a9LL /* 228 */, 0x6bdbe0e76d48e7d4LL /* 229 */, + 0x08df828745d9179eLL /* 230 */, 0x22ea6a9add53bd34LL /* 231 */, + 0xe36e141c5622200aLL /* 232 */, 0x7f805d1b8cb750eeLL /* 233 */, + 0xafe5c7a59f58e837LL /* 234 */, 0xe27f996a4fb1c23cLL /* 235 */, + 0xd3867dfb0775f0d0LL /* 236 */, 0xd0e673de6e88891aLL /* 237 */, + 0x123aeb9eafb86c25LL /* 238 */, 0x30f1d5d5c145b895LL /* 239 */, + 0xbb434a2dee7269e7LL /* 240 */, 0x78cb67ecf931fa38LL /* 241 */, + 0xf33b0372323bbf9cLL /* 242 */, 0x52d66336fb279c74LL /* 243 */, + 0x505f33ac0afb4eaaLL /* 244 */, 0xe8a5cd99a2cce187LL /* 245 */, + 0x534974801e2d30bbLL /* 246 */, 0x8d2d5711d5876d90LL /* 247 */, + 0x1f1a412891bc038eLL /* 248 */, 0xd6e2e71d82e56648LL /* 249 */, + 0x74036c3a497732b7LL /* 250 */, 0x89b67ed96361f5abLL /* 251 */, + 0xffed95d8f1ea02a2LL /* 252 */, 0xe72b3bd61464d43dLL /* 253 */, + 0xa6300f170bdc4820LL /* 254 */, 0xebc18760ed78a77aLL /* 255 */ +}; +static u64 sbox2[256] = { + 0xe6a6be5a05a12138LL /* 256 */, 0xb5a122a5b4f87c98LL /* 257 */, + 0x563c6089140b6990LL /* 258 */, 0x4c46cb2e391f5dd5LL /* 259 */, + 0xd932addbc9b79434LL /* 260 */, 0x08ea70e42015aff5LL /* 261 */, + 0xd765a6673e478cf1LL /* 262 */, 0xc4fb757eab278d99LL /* 263 */, + 0xdf11c6862d6e0692LL /* 264 */, 0xddeb84f10d7f3b16LL /* 265 */, + 0x6f2ef604a665ea04LL /* 266 */, 0x4a8e0f0ff0e0dfb3LL /* 267 */, + 0xa5edeef83dbcba51LL /* 268 */, 0xfc4f0a2a0ea4371eLL /* 269 */, + 0xe83e1da85cb38429LL /* 270 */, 0xdc8ff882ba1b1ce2LL /* 271 */, + 0xcd45505e8353e80dLL /* 272 */, 0x18d19a00d4db0717LL /* 273 */, + 0x34a0cfeda5f38101LL /* 274 */, 0x0be77e518887caf2LL /* 275 */, + 0x1e341438b3c45136LL /* 276 */, 0xe05797f49089ccf9LL /* 277 */, + 0xffd23f9df2591d14LL /* 278 */, 0x543dda228595c5cdLL /* 279 */, + 0x661f81fd99052a33LL /* 280 */, 0x8736e641db0f7b76LL /* 281 */, + 0x15227725418e5307LL /* 282 */, 0xe25f7f46162eb2faLL /* 283 */, + 0x48a8b2126c13d9feLL /* 284 */, 0xafdc541792e76eeaLL /* 285 */, + 0x03d912bfc6d1898fLL /* 286 */, 0x31b1aafa1b83f51bLL /* 287 */, + 0xf1ac2796e42ab7d9LL /* 288 */, 0x40a3a7d7fcd2ebacLL /* 289 */, + 0x1056136d0afbbcc5LL /* 290 */, 0x7889e1dd9a6d0c85LL /* 291 */, + 0xd33525782a7974aaLL /* 292 */, 0xa7e25d09078ac09bLL /* 293 */, + 0xbd4138b3eac6edd0LL /* 294 */, 0x920abfbe71eb9e70LL /* 295 */, + 0xa2a5d0f54fc2625cLL /* 296 */, 0xc054e36b0b1290a3LL /* 297 */, + 0xf6dd59ff62fe932bLL /* 298 */, 0x3537354511a8ac7dLL /* 299 */, + 0xca845e9172fadcd4LL /* 300 */, 0x84f82b60329d20dcLL /* 301 */, + 0x79c62ce1cd672f18LL /* 302 */, 0x8b09a2add124642cLL /* 303 */, + 0xd0c1e96a19d9e726LL /* 304 */, 0x5a786a9b4ba9500cLL /* 305 */, + 0x0e020336634c43f3LL /* 306 */, 0xc17b474aeb66d822LL /* 307 */, + 0x6a731ae3ec9baac2LL /* 308 */, 0x8226667ae0840258LL /* 309 */, + 0x67d4567691caeca5LL /* 310 */, 0x1d94155c4875adb5LL /* 311 */, + 0x6d00fd985b813fdfLL /* 312 */, 0x51286efcb774cd06LL /* 313 */, + 0x5e8834471fa744afLL /* 314 */, 0xf72ca0aee761ae2eLL /* 315 */, + 0xbe40e4cdaee8e09aLL /* 316 */, 0xe9970bbb5118f665LL /* 317 */, + 0x726e4beb33df1964LL /* 318 */, 0x703b000729199762LL /* 319 */, + 0x4631d816f5ef30a7LL /* 320 */, 0xb880b5b51504a6beLL /* 321 */, + 0x641793c37ed84b6cLL /* 322 */, 0x7b21ed77f6e97d96LL /* 323 */, + 0x776306312ef96b73LL /* 324 */, 0xae528948e86ff3f4LL /* 325 */, + 0x53dbd7f286a3f8f8LL /* 326 */, 0x16cadce74cfc1063LL /* 327 */, + 0x005c19bdfa52c6ddLL /* 328 */, 0x68868f5d64d46ad3LL /* 329 */, + 0x3a9d512ccf1e186aLL /* 330 */, 0x367e62c2385660aeLL /* 331 */, + 0xe359e7ea77dcb1d7LL /* 332 */, 0x526c0773749abe6eLL /* 333 */, + 0x735ae5f9d09f734bLL /* 334 */, 0x493fc7cc8a558ba8LL /* 335 */, + 0xb0b9c1533041ab45LL /* 336 */, 0x321958ba470a59bdLL /* 337 */, + 0x852db00b5f46c393LL /* 338 */, 0x91209b2bd336b0e5LL /* 339 */, + 0x6e604f7d659ef19fLL /* 340 */, 0xb99a8ae2782ccb24LL /* 341 */, + 0xccf52ab6c814c4c7LL /* 342 */, 0x4727d9afbe11727bLL /* 343 */, + 0x7e950d0c0121b34dLL /* 344 */, 0x756f435670ad471fLL /* 345 */, + 0xf5add442615a6849LL /* 346 */, 0x4e87e09980b9957aLL /* 347 */, + 0x2acfa1df50aee355LL /* 348 */, 0xd898263afd2fd556LL /* 349 */, + 0xc8f4924dd80c8fd6LL /* 350 */, 0xcf99ca3d754a173aLL /* 351 */, + 0xfe477bacaf91bf3cLL /* 352 */, 0xed5371f6d690c12dLL /* 353 */, + 0x831a5c285e687094LL /* 354 */, 0xc5d3c90a3708a0a4LL /* 355 */, + 0x0f7f903717d06580LL /* 356 */, 0x19f9bb13b8fdf27fLL /* 357 */, + 0xb1bd6f1b4d502843LL /* 358 */, 0x1c761ba38fff4012LL /* 359 */, + 0x0d1530c4e2e21f3bLL /* 360 */, 0x8943ce69a7372c8aLL /* 361 */, + 0xe5184e11feb5ce66LL /* 362 */, 0x618bdb80bd736621LL /* 363 */, + 0x7d29bad68b574d0bLL /* 364 */, 0x81bb613e25e6fe5bLL /* 365 */, + 0x071c9c10bc07913fLL /* 366 */, 0xc7beeb7909ac2d97LL /* 367 */, + 0xc3e58d353bc5d757LL /* 368 */, 0xeb017892f38f61e8LL /* 369 */, + 0xd4effb9c9b1cc21aLL /* 370 */, 0x99727d26f494f7abLL /* 371 */, + 0xa3e063a2956b3e03LL /* 372 */, 0x9d4a8b9a4aa09c30LL /* 373 */, + 0x3f6ab7d500090fb4LL /* 374 */, 0x9cc0f2a057268ac0LL /* 375 */, + 0x3dee9d2dedbf42d1LL /* 376 */, 0x330f49c87960a972LL /* 377 */, + 0xc6b2720287421b41LL /* 378 */, 0x0ac59ec07c00369cLL /* 379 */, + 0xef4eac49cb353425LL /* 380 */, 0xf450244eef0129d8LL /* 381 */, + 0x8acc46e5caf4deb6LL /* 382 */, 0x2ffeab63989263f7LL /* 383 */, + 0x8f7cb9fe5d7a4578LL /* 384 */, 0x5bd8f7644e634635LL /* 385 */, + 0x427a7315bf2dc900LL /* 386 */, 0x17d0c4aa2125261cLL /* 387 */, + 0x3992486c93518e50LL /* 388 */, 0xb4cbfee0a2d7d4c3LL /* 389 */, + 0x7c75d6202c5ddd8dLL /* 390 */, 0xdbc295d8e35b6c61LL /* 391 */, + 0x60b369d302032b19LL /* 392 */, 0xce42685fdce44132LL /* 393 */, + 0x06f3ddb9ddf65610LL /* 394 */, 0x8ea4d21db5e148f0LL /* 395 */, + 0x20b0fce62fcd496fLL /* 396 */, 0x2c1b912358b0ee31LL /* 397 */, + 0xb28317b818f5a308LL /* 398 */, 0xa89c1e189ca6d2cfLL /* 399 */, + 0x0c6b18576aaadbc8LL /* 400 */, 0xb65deaa91299fae3LL /* 401 */, + 0xfb2b794b7f1027e7LL /* 402 */, 0x04e4317f443b5bebLL /* 403 */, + 0x4b852d325939d0a6LL /* 404 */, 0xd5ae6beefb207ffcLL /* 405 */, + 0x309682b281c7d374LL /* 406 */, 0xbae309a194c3b475LL /* 407 */, + 0x8cc3f97b13b49f05LL /* 408 */, 0x98a9422ff8293967LL /* 409 */, + 0x244b16b01076ff7cLL /* 410 */, 0xf8bf571c663d67eeLL /* 411 */, + 0x1f0d6758eee30da1LL /* 412 */, 0xc9b611d97adeb9b7LL /* 413 */, + 0xb7afd5887b6c57a2LL /* 414 */, 0x6290ae846b984fe1LL /* 415 */, + 0x94df4cdeacc1a5fdLL /* 416 */, 0x058a5bd1c5483affLL /* 417 */, + 0x63166cc142ba3c37LL /* 418 */, 0x8db8526eb2f76f40LL /* 419 */, + 0xe10880036f0d6d4eLL /* 420 */, 0x9e0523c9971d311dLL /* 421 */, + 0x45ec2824cc7cd691LL /* 422 */, 0x575b8359e62382c9LL /* 423 */, + 0xfa9e400dc4889995LL /* 424 */, 0xd1823ecb45721568LL /* 425 */, + 0xdafd983b8206082fLL /* 426 */, 0xaa7d29082386a8cbLL /* 427 */, + 0x269fcd4403b87588LL /* 428 */, 0x1b91f5f728bdd1e0LL /* 429 */, + 0xe4669f39040201f6LL /* 430 */, 0x7a1d7c218cf04adeLL /* 431 */, + 0x65623c29d79ce5ceLL /* 432 */, 0x2368449096c00bb1LL /* 433 */, + 0xab9bf1879da503baLL /* 434 */, 0xbc23ecb1a458058eLL /* 435 */, + 0x9a58df01bb401eccLL /* 436 */, 0xa070e868a85f143dLL /* 437 */, + 0x4ff188307df2239eLL /* 438 */, 0x14d565b41a641183LL /* 439 */, + 0xee13337452701602LL /* 440 */, 0x950e3dcf3f285e09LL /* 441 */, + 0x59930254b9c80953LL /* 442 */, 0x3bf299408930da6dLL /* 443 */, + 0xa955943f53691387LL /* 444 */, 0xa15edecaa9cb8784LL /* 445 */, + 0x29142127352be9a0LL /* 446 */, 0x76f0371fff4e7afbLL /* 447 */, + 0x0239f450274f2228LL /* 448 */, 0xbb073af01d5e868bLL /* 449 */, + 0xbfc80571c10e96c1LL /* 450 */, 0xd267088568222e23LL /* 451 */, + 0x9671a3d48e80b5b0LL /* 452 */, 0x55b5d38ae193bb81LL /* 453 */, + 0x693ae2d0a18b04b8LL /* 454 */, 0x5c48b4ecadd5335fLL /* 455 */, + 0xfd743b194916a1caLL /* 456 */, 0x2577018134be98c4LL /* 457 */, + 0xe77987e83c54a4adLL /* 458 */, 0x28e11014da33e1b9LL /* 459 */, + 0x270cc59e226aa213LL /* 460 */, 0x71495f756d1a5f60LL /* 461 */, + 0x9be853fb60afef77LL /* 462 */, 0xadc786a7f7443dbfLL /* 463 */, + 0x0904456173b29a82LL /* 464 */, 0x58bc7a66c232bd5eLL /* 465 */, + 0xf306558c673ac8b2LL /* 466 */, 0x41f639c6b6c9772aLL /* 467 */, + 0x216defe99fda35daLL /* 468 */, 0x11640cc71c7be615LL /* 469 */, + 0x93c43694565c5527LL /* 470 */, 0xea038e6246777839LL /* 471 */, + 0xf9abf3ce5a3e2469LL /* 472 */, 0x741e768d0fd312d2LL /* 473 */, + 0x0144b883ced652c6LL /* 474 */, 0xc20b5a5ba33f8552LL /* 475 */, + 0x1ae69633c3435a9dLL /* 476 */, 0x97a28ca4088cfdecLL /* 477 */, + 0x8824a43c1e96f420LL /* 478 */, 0x37612fa66eeea746LL /* 479 */, + 0x6b4cb165f9cf0e5aLL /* 480 */, 0x43aa1c06a0abfb4aLL /* 481 */, + 0x7f4dc26ff162796bLL /* 482 */, 0x6cbacc8e54ed9b0fLL /* 483 */, + 0xa6b7ffefd2bb253eLL /* 484 */, 0x2e25bc95b0a29d4fLL /* 485 */, + 0x86d6a58bdef1388cLL /* 486 */, 0xded74ac576b6f054LL /* 487 */, + 0x8030bdbc2b45805dLL /* 488 */, 0x3c81af70e94d9289LL /* 489 */, + 0x3eff6dda9e3100dbLL /* 490 */, 0xb38dc39fdfcc8847LL /* 491 */, + 0x123885528d17b87eLL /* 492 */, 0xf2da0ed240b1b642LL /* 493 */, + 0x44cefadcd54bf9a9LL /* 494 */, 0x1312200e433c7ee6LL /* 495 */, + 0x9ffcc84f3a78c748LL /* 496 */, 0xf0cd1f72248576bbLL /* 497 */, + 0xec6974053638cfe4LL /* 498 */, 0x2ba7b67c0cec4e4cLL /* 499 */, + 0xac2f4df3e5ce32edLL /* 500 */, 0xcb33d14326ea4c11LL /* 501 */, + 0xa4e9044cc77e58bcLL /* 502 */, 0x5f513293d934fcefLL /* 503 */, + 0x5dc9645506e55444LL /* 504 */, 0x50de418f317de40aLL /* 505 */, + 0x388cb31a69dde259LL /* 506 */, 0x2db4a83455820a86LL /* 507 */, + 0x9010a91e84711ae9LL /* 508 */, 0x4df7f0b7b1498371LL /* 509 */, + 0xd62a2eabc0977179LL /* 510 */, 0x22fac097aa8d5c0eLL /* 511 */ +}; +static u64 sbox3[256] = { + 0xf49fcc2ff1daf39bLL /* 512 */, 0x487fd5c66ff29281LL /* 513 */, + 0xe8a30667fcdca83fLL /* 514 */, 0x2c9b4be3d2fcce63LL /* 515 */, + 0xda3ff74b93fbbbc2LL /* 516 */, 0x2fa165d2fe70ba66LL /* 517 */, + 0xa103e279970e93d4LL /* 518 */, 0xbecdec77b0e45e71LL /* 519 */, + 0xcfb41e723985e497LL /* 520 */, 0xb70aaa025ef75017LL /* 521 */, + 0xd42309f03840b8e0LL /* 522 */, 0x8efc1ad035898579LL /* 523 */, + 0x96c6920be2b2abc5LL /* 524 */, 0x66af4163375a9172LL /* 525 */, + 0x2174abdcca7127fbLL /* 526 */, 0xb33ccea64a72ff41LL /* 527 */, + 0xf04a4933083066a5LL /* 528 */, 0x8d970acdd7289af5LL /* 529 */, + 0x8f96e8e031c8c25eLL /* 530 */, 0xf3fec02276875d47LL /* 531 */, + 0xec7bf310056190ddLL /* 532 */, 0xf5adb0aebb0f1491LL /* 533 */, + 0x9b50f8850fd58892LL /* 534 */, 0x4975488358b74de8LL /* 535 */, + 0xa3354ff691531c61LL /* 536 */, 0x0702bbe481d2c6eeLL /* 537 */, + 0x89fb24057deded98LL /* 538 */, 0xac3075138596e902LL /* 539 */, + 0x1d2d3580172772edLL /* 540 */, 0xeb738fc28e6bc30dLL /* 541 */, + 0x5854ef8f63044326LL /* 542 */, 0x9e5c52325add3bbeLL /* 543 */, + 0x90aa53cf325c4623LL /* 544 */, 0xc1d24d51349dd067LL /* 545 */, + 0x2051cfeea69ea624LL /* 546 */, 0x13220f0a862e7e4fLL /* 547 */, + 0xce39399404e04864LL /* 548 */, 0xd9c42ca47086fcb7LL /* 549 */, + 0x685ad2238a03e7ccLL /* 550 */, 0x066484b2ab2ff1dbLL /* 551 */, + 0xfe9d5d70efbf79ecLL /* 552 */, 0x5b13b9dd9c481854LL /* 553 */, + 0x15f0d475ed1509adLL /* 554 */, 0x0bebcd060ec79851LL /* 555 */, + 0xd58c6791183ab7f8LL /* 556 */, 0xd1187c5052f3eee4LL /* 557 */, + 0xc95d1192e54e82ffLL /* 558 */, 0x86eea14cb9ac6ca2LL /* 559 */, + 0x3485beb153677d5dLL /* 560 */, 0xdd191d781f8c492aLL /* 561 */, + 0xf60866baa784ebf9LL /* 562 */, 0x518f643ba2d08c74LL /* 563 */, + 0x8852e956e1087c22LL /* 564 */, 0xa768cb8dc410ae8dLL /* 565 */, + 0x38047726bfec8e1aLL /* 566 */, 0xa67738b4cd3b45aaLL /* 567 */, + 0xad16691cec0dde19LL /* 568 */, 0xc6d4319380462e07LL /* 569 */, + 0xc5a5876d0ba61938LL /* 570 */, 0x16b9fa1fa58fd840LL /* 571 */, + 0x188ab1173ca74f18LL /* 572 */, 0xabda2f98c99c021fLL /* 573 */, + 0x3e0580ab134ae816LL /* 574 */, 0x5f3b05b773645abbLL /* 575 */, + 0x2501a2be5575f2f6LL /* 576 */, 0x1b2f74004e7e8ba9LL /* 577 */, + 0x1cd7580371e8d953LL /* 578 */, 0x7f6ed89562764e30LL /* 579 */, + 0xb15926ff596f003dLL /* 580 */, 0x9f65293da8c5d6b9LL /* 581 */, + 0x6ecef04dd690f84cLL /* 582 */, 0x4782275fff33af88LL /* 583 */, + 0xe41433083f820801LL /* 584 */, 0xfd0dfe409a1af9b5LL /* 585 */, + 0x4325a3342cdb396bLL /* 586 */, 0x8ae77e62b301b252LL /* 587 */, + 0xc36f9e9f6655615aLL /* 588 */, 0x85455a2d92d32c09LL /* 589 */, + 0xf2c7dea949477485LL /* 590 */, 0x63cfb4c133a39ebaLL /* 591 */, + 0x83b040cc6ebc5462LL /* 592 */, 0x3b9454c8fdb326b0LL /* 593 */, + 0x56f56a9e87ffd78cLL /* 594 */, 0x2dc2940d99f42bc6LL /* 595 */, + 0x98f7df096b096e2dLL /* 596 */, 0x19a6e01e3ad852bfLL /* 597 */, + 0x42a99ccbdbd4b40bLL /* 598 */, 0xa59998af45e9c559LL /* 599 */, + 0x366295e807d93186LL /* 600 */, 0x6b48181bfaa1f773LL /* 601 */, + 0x1fec57e2157a0a1dLL /* 602 */, 0x4667446af6201ad5LL /* 603 */, + 0xe615ebcacfb0f075LL /* 604 */, 0xb8f31f4f68290778LL /* 605 */, + 0x22713ed6ce22d11eLL /* 606 */, 0x3057c1a72ec3c93bLL /* 607 */, + 0xcb46acc37c3f1f2fLL /* 608 */, 0xdbb893fd02aaf50eLL /* 609 */, + 0x331fd92e600b9fcfLL /* 610 */, 0xa498f96148ea3ad6LL /* 611 */, + 0xa8d8426e8b6a83eaLL /* 612 */, 0xa089b274b7735cdcLL /* 613 */, + 0x87f6b3731e524a11LL /* 614 */, 0x118808e5cbc96749LL /* 615 */, + 0x9906e4c7b19bd394LL /* 616 */, 0xafed7f7e9b24a20cLL /* 617 */, + 0x6509eadeeb3644a7LL /* 618 */, 0x6c1ef1d3e8ef0edeLL /* 619 */, + 0xb9c97d43e9798fb4LL /* 620 */, 0xa2f2d784740c28a3LL /* 621 */, + 0x7b8496476197566fLL /* 622 */, 0x7a5be3e6b65f069dLL /* 623 */, + 0xf96330ed78be6f10LL /* 624 */, 0xeee60de77a076a15LL /* 625 */, + 0x2b4bee4aa08b9bd0LL /* 626 */, 0x6a56a63ec7b8894eLL /* 627 */, + 0x02121359ba34fef4LL /* 628 */, 0x4cbf99f8283703fcLL /* 629 */, + 0x398071350caf30c8LL /* 630 */, 0xd0a77a89f017687aLL /* 631 */, + 0xf1c1a9eb9e423569LL /* 632 */, 0x8c7976282dee8199LL /* 633 */, + 0x5d1737a5dd1f7abdLL /* 634 */, 0x4f53433c09a9fa80LL /* 635 */, + 0xfa8b0c53df7ca1d9LL /* 636 */, 0x3fd9dcbc886ccb77LL /* 637 */, + 0xc040917ca91b4720LL /* 638 */, 0x7dd00142f9d1dcdfLL /* 639 */, + 0x8476fc1d4f387b58LL /* 640 */, 0x23f8e7c5f3316503LL /* 641 */, + 0x032a2244e7e37339LL /* 642 */, 0x5c87a5d750f5a74bLL /* 643 */, + 0x082b4cc43698992eLL /* 644 */, 0xdf917becb858f63cLL /* 645 */, + 0x3270b8fc5bf86ddaLL /* 646 */, 0x10ae72bb29b5dd76LL /* 647 */, + 0x576ac94e7700362bLL /* 648 */, 0x1ad112dac61efb8fLL /* 649 */, + 0x691bc30ec5faa427LL /* 650 */, 0xff246311cc327143LL /* 651 */, + 0x3142368e30e53206LL /* 652 */, 0x71380e31e02ca396LL /* 653 */, + 0x958d5c960aad76f1LL /* 654 */, 0xf8d6f430c16da536LL /* 655 */, + 0xc8ffd13f1be7e1d2LL /* 656 */, 0x7578ae66004ddbe1LL /* 657 */, + 0x05833f01067be646LL /* 658 */, 0xbb34b5ad3bfe586dLL /* 659 */, + 0x095f34c9a12b97f0LL /* 660 */, 0x247ab64525d60ca8LL /* 661 */, + 0xdcdbc6f3017477d1LL /* 662 */, 0x4a2e14d4decad24dLL /* 663 */, + 0xbdb5e6d9be0a1eebLL /* 664 */, 0x2a7e70f7794301abLL /* 665 */, + 0xdef42d8a270540fdLL /* 666 */, 0x01078ec0a34c22c1LL /* 667 */, + 0xe5de511af4c16387LL /* 668 */, 0x7ebb3a52bd9a330aLL /* 669 */, + 0x77697857aa7d6435LL /* 670 */, 0x004e831603ae4c32LL /* 671 */, + 0xe7a21020ad78e312LL /* 672 */, 0x9d41a70c6ab420f2LL /* 673 */, + 0x28e06c18ea1141e6LL /* 674 */, 0xd2b28cbd984f6b28LL /* 675 */, + 0x26b75f6c446e9d83LL /* 676 */, 0xba47568c4d418d7fLL /* 677 */, + 0xd80badbfe6183d8eLL /* 678 */, 0x0e206d7f5f166044LL /* 679 */, + 0xe258a43911cbca3eLL /* 680 */, 0x723a1746b21dc0bcLL /* 681 */, + 0xc7caa854f5d7cdd3LL /* 682 */, 0x7cac32883d261d9cLL /* 683 */, + 0x7690c26423ba942cLL /* 684 */, 0x17e55524478042b8LL /* 685 */, + 0xe0be477656a2389fLL /* 686 */, 0x4d289b5e67ab2da0LL /* 687 */, + 0x44862b9c8fbbfd31LL /* 688 */, 0xb47cc8049d141365LL /* 689 */, + 0x822c1b362b91c793LL /* 690 */, 0x4eb14655fb13dfd8LL /* 691 */, + 0x1ecbba0714e2a97bLL /* 692 */, 0x6143459d5cde5f14LL /* 693 */, + 0x53a8fbf1d5f0ac89LL /* 694 */, 0x97ea04d81c5e5b00LL /* 695 */, + 0x622181a8d4fdb3f3LL /* 696 */, 0xe9bcd341572a1208LL /* 697 */, + 0x1411258643cce58aLL /* 698 */, 0x9144c5fea4c6e0a4LL /* 699 */, + 0x0d33d06565cf620fLL /* 700 */, 0x54a48d489f219ca1LL /* 701 */, + 0xc43e5eac6d63c821LL /* 702 */, 0xa9728b3a72770dafLL /* 703 */, + 0xd7934e7b20df87efLL /* 704 */, 0xe35503b61a3e86e5LL /* 705 */, + 0xcae321fbc819d504LL /* 706 */, 0x129a50b3ac60bfa6LL /* 707 */, + 0xcd5e68ea7e9fb6c3LL /* 708 */, 0xb01c90199483b1c7LL /* 709 */, + 0x3de93cd5c295376cLL /* 710 */, 0xaed52edf2ab9ad13LL /* 711 */, + 0x2e60f512c0a07884LL /* 712 */, 0xbc3d86a3e36210c9LL /* 713 */, + 0x35269d9b163951ceLL /* 714 */, 0x0c7d6e2ad0cdb5faLL /* 715 */, + 0x59e86297d87f5733LL /* 716 */, 0x298ef221898db0e7LL /* 717 */, + 0x55000029d1a5aa7eLL /* 718 */, 0x8bc08ae1b5061b45LL /* 719 */, + 0xc2c31c2b6c92703aLL /* 720 */, 0x94cc596baf25ef42LL /* 721 */, + 0x0a1d73db22540456LL /* 722 */, 0x04b6a0f9d9c4179aLL /* 723 */, + 0xeffdafa2ae3d3c60LL /* 724 */, 0xf7c8075bb49496c4LL /* 725 */, + 0x9cc5c7141d1cd4e3LL /* 726 */, 0x78bd1638218e5534LL /* 727 */, + 0xb2f11568f850246aLL /* 728 */, 0xedfabcfa9502bc29LL /* 729 */, + 0x796ce5f2da23051bLL /* 730 */, 0xaae128b0dc93537cLL /* 731 */, + 0x3a493da0ee4b29aeLL /* 732 */, 0xb5df6b2c416895d7LL /* 733 */, + 0xfcabbd25122d7f37LL /* 734 */, 0x70810b58105dc4b1LL /* 735 */, + 0xe10fdd37f7882a90LL /* 736 */, 0x524dcab5518a3f5cLL /* 737 */, + 0x3c9e85878451255bLL /* 738 */, 0x4029828119bd34e2LL /* 739 */, + 0x74a05b6f5d3ceccbLL /* 740 */, 0xb610021542e13ecaLL /* 741 */, + 0x0ff979d12f59e2acLL /* 742 */, 0x6037da27e4f9cc50LL /* 743 */, + 0x5e92975a0df1847dLL /* 744 */, 0xd66de190d3e623feLL /* 745 */, + 0x5032d6b87b568048LL /* 746 */, 0x9a36b7ce8235216eLL /* 747 */, + 0x80272a7a24f64b4aLL /* 748 */, 0x93efed8b8c6916f7LL /* 749 */, + 0x37ddbff44cce1555LL /* 750 */, 0x4b95db5d4b99bd25LL /* 751 */, + 0x92d3fda169812fc0LL /* 752 */, 0xfb1a4a9a90660bb6LL /* 753 */, + 0x730c196946a4b9b2LL /* 754 */, 0x81e289aa7f49da68LL /* 755 */, + 0x64669a0f83b1a05fLL /* 756 */, 0x27b3ff7d9644f48bLL /* 757 */, + 0xcc6b615c8db675b3LL /* 758 */, 0x674f20b9bcebbe95LL /* 759 */, + 0x6f31238275655982LL /* 760 */, 0x5ae488713e45cf05LL /* 761 */, + 0xbf619f9954c21157LL /* 762 */, 0xeabac46040a8eae9LL /* 763 */, + 0x454c6fe9f2c0c1cdLL /* 764 */, 0x419cf6496412691cLL /* 765 */, + 0xd3dc3bef265b0f70LL /* 766 */, 0x6d0e60f5c3578a9eLL /* 767 */ +}; +static u64 sbox4[256] = { + 0x5b0e608526323c55LL /* 768 */, 0x1a46c1a9fa1b59f5LL /* 769 */, + 0xa9e245a17c4c8ffaLL /* 770 */, 0x65ca5159db2955d7LL /* 771 */, + 0x05db0a76ce35afc2LL /* 772 */, 0x81eac77ea9113d45LL /* 773 */, + 0x528ef88ab6ac0a0dLL /* 774 */, 0xa09ea253597be3ffLL /* 775 */, + 0x430ddfb3ac48cd56LL /* 776 */, 0xc4b3a67af45ce46fLL /* 777 */, + 0x4ececfd8fbe2d05eLL /* 778 */, 0x3ef56f10b39935f0LL /* 779 */, + 0x0b22d6829cd619c6LL /* 780 */, 0x17fd460a74df2069LL /* 781 */, + 0x6cf8cc8e8510ed40LL /* 782 */, 0xd6c824bf3a6ecaa7LL /* 783 */, + 0x61243d581a817049LL /* 784 */, 0x048bacb6bbc163a2LL /* 785 */, + 0xd9a38ac27d44cc32LL /* 786 */, 0x7fddff5baaf410abLL /* 787 */, + 0xad6d495aa804824bLL /* 788 */, 0xe1a6a74f2d8c9f94LL /* 789 */, + 0xd4f7851235dee8e3LL /* 790 */, 0xfd4b7f886540d893LL /* 791 */, + 0x247c20042aa4bfdaLL /* 792 */, 0x096ea1c517d1327cLL /* 793 */, + 0xd56966b4361a6685LL /* 794 */, 0x277da5c31221057dLL /* 795 */, + 0x94d59893a43acff7LL /* 796 */, 0x64f0c51ccdc02281LL /* 797 */, + 0x3d33bcc4ff6189dbLL /* 798 */, 0xe005cb184ce66af1LL /* 799 */, + 0xff5ccd1d1db99beaLL /* 800 */, 0xb0b854a7fe42980fLL /* 801 */, + 0x7bd46a6a718d4b9fLL /* 802 */, 0xd10fa8cc22a5fd8cLL /* 803 */, + 0xd31484952be4bd31LL /* 804 */, 0xc7fa975fcb243847LL /* 805 */, + 0x4886ed1e5846c407LL /* 806 */, 0x28cddb791eb70b04LL /* 807 */, + 0xc2b00be2f573417fLL /* 808 */, 0x5c9590452180f877LL /* 809 */, + 0x7a6bddfff370eb00LL /* 810 */, 0xce509e38d6d9d6a4LL /* 811 */, + 0xebeb0f00647fa702LL /* 812 */, 0x1dcc06cf76606f06LL /* 813 */, + 0xe4d9f28ba286ff0aLL /* 814 */, 0xd85a305dc918c262LL /* 815 */, + 0x475b1d8732225f54LL /* 816 */, 0x2d4fb51668ccb5feLL /* 817 */, + 0xa679b9d9d72bba20LL /* 818 */, 0x53841c0d912d43a5LL /* 819 */, + 0x3b7eaa48bf12a4e8LL /* 820 */, 0x781e0e47f22f1ddfLL /* 821 */, + 0xeff20ce60ab50973LL /* 822 */, 0x20d261d19dffb742LL /* 823 */, + 0x16a12b03062a2e39LL /* 824 */, 0x1960eb2239650495LL /* 825 */, + 0x251c16fed50eb8b8LL /* 826 */, 0x9ac0c330f826016eLL /* 827 */, + 0xed152665953e7671LL /* 828 */, 0x02d63194a6369570LL /* 829 */, + 0x5074f08394b1c987LL /* 830 */, 0x70ba598c90b25ce1LL /* 831 */, + 0x794a15810b9742f6LL /* 832 */, 0x0d5925e9fcaf8c6cLL /* 833 */, + 0x3067716cd868744eLL /* 834 */, 0x910ab077e8d7731bLL /* 835 */, + 0x6a61bbdb5ac42f61LL /* 836 */, 0x93513efbf0851567LL /* 837 */, + 0xf494724b9e83e9d5LL /* 838 */, 0xe887e1985c09648dLL /* 839 */, + 0x34b1d3c675370cfdLL /* 840 */, 0xdc35e433bc0d255dLL /* 841 */, + 0xd0aab84234131be0LL /* 842 */, 0x08042a50b48b7eafLL /* 843 */, + 0x9997c4ee44a3ab35LL /* 844 */, 0x829a7b49201799d0LL /* 845 */, + 0x263b8307b7c54441LL /* 846 */, 0x752f95f4fd6a6ca6LL /* 847 */, + 0x927217402c08c6e5LL /* 848 */, 0x2a8ab754a795d9eeLL /* 849 */, + 0xa442f7552f72943dLL /* 850 */, 0x2c31334e19781208LL /* 851 */, + 0x4fa98d7ceaee6291LL /* 852 */, 0x55c3862f665db309LL /* 853 */, + 0xbd0610175d53b1f3LL /* 854 */, 0x46fe6cb840413f27LL /* 855 */, + 0x3fe03792df0cfa59LL /* 856 */, 0xcfe700372eb85e8fLL /* 857 */, + 0xa7be29e7adbce118LL /* 858 */, 0xe544ee5cde8431ddLL /* 859 */, + 0x8a781b1b41f1873eLL /* 860 */, 0xa5c94c78a0d2f0e7LL /* 861 */, + 0x39412e2877b60728LL /* 862 */, 0xa1265ef3afc9a62cLL /* 863 */, + 0xbcc2770c6a2506c5LL /* 864 */, 0x3ab66dd5dce1ce12LL /* 865 */, + 0xe65499d04a675b37LL /* 866 */, 0x7d8f523481bfd216LL /* 867 */, + 0x0f6f64fcec15f389LL /* 868 */, 0x74efbe618b5b13c8LL /* 869 */, + 0xacdc82b714273e1dLL /* 870 */, 0xdd40bfe003199d17LL /* 871 */, + 0x37e99257e7e061f8LL /* 872 */, 0xfa52626904775aaaLL /* 873 */, + 0x8bbbf63a463d56f9LL /* 874 */, 0xf0013f1543a26e64LL /* 875 */, + 0xa8307e9f879ec898LL /* 876 */, 0xcc4c27a4150177ccLL /* 877 */, + 0x1b432f2cca1d3348LL /* 878 */, 0xde1d1f8f9f6fa013LL /* 879 */, + 0x606602a047a7ddd6LL /* 880 */, 0xd237ab64cc1cb2c7LL /* 881 */, + 0x9b938e7225fcd1d3LL /* 882 */, 0xec4e03708e0ff476LL /* 883 */, + 0xfeb2fbda3d03c12dLL /* 884 */, 0xae0bced2ee43889aLL /* 885 */, + 0x22cb8923ebfb4f43LL /* 886 */, 0x69360d013cf7396dLL /* 887 */, + 0x855e3602d2d4e022LL /* 888 */, 0x073805bad01f784cLL /* 889 */, + 0x33e17a133852f546LL /* 890 */, 0xdf4874058ac7b638LL /* 891 */, + 0xba92b29c678aa14aLL /* 892 */, 0x0ce89fc76cfaadcdLL /* 893 */, + 0x5f9d4e0908339e34LL /* 894 */, 0xf1afe9291f5923b9LL /* 895 */, + 0x6e3480f60f4a265fLL /* 896 */, 0xeebf3a2ab29b841cLL /* 897 */, + 0xe21938a88f91b4adLL /* 898 */, 0x57dfeff845c6d3c3LL /* 899 */, + 0x2f006b0bf62caaf2LL /* 900 */, 0x62f479ef6f75ee78LL /* 901 */, + 0x11a55ad41c8916a9LL /* 902 */, 0xf229d29084fed453LL /* 903 */, + 0x42f1c27b16b000e6LL /* 904 */, 0x2b1f76749823c074LL /* 905 */, + 0x4b76eca3c2745360LL /* 906 */, 0x8c98f463b91691bdLL /* 907 */, + 0x14bcc93cf1ade66aLL /* 908 */, 0x8885213e6d458397LL /* 909 */, + 0x8e177df0274d4711LL /* 910 */, 0xb49b73b5503f2951LL /* 911 */, + 0x10168168c3f96b6bLL /* 912 */, 0x0e3d963b63cab0aeLL /* 913 */, + 0x8dfc4b5655a1db14LL /* 914 */, 0xf789f1356e14de5cLL /* 915 */, + 0x683e68af4e51dac1LL /* 916 */, 0xc9a84f9d8d4b0fd9LL /* 917 */, + 0x3691e03f52a0f9d1LL /* 918 */, 0x5ed86e46e1878e80LL /* 919 */, + 0x3c711a0e99d07150LL /* 920 */, 0x5a0865b20c4e9310LL /* 921 */, + 0x56fbfc1fe4f0682eLL /* 922 */, 0xea8d5de3105edf9bLL /* 923 */, + 0x71abfdb12379187aLL /* 924 */, 0x2eb99de1bee77b9cLL /* 925 */, + 0x21ecc0ea33cf4523LL /* 926 */, 0x59a4d7521805c7a1LL /* 927 */, + 0x3896f5eb56ae7c72LL /* 928 */, 0xaa638f3db18f75dcLL /* 929 */, + 0x9f39358dabe9808eLL /* 930 */, 0xb7defa91c00b72acLL /* 931 */, + 0x6b5541fd62492d92LL /* 932 */, 0x6dc6dee8f92e4d5bLL /* 933 */, + 0x353f57abc4beea7eLL /* 934 */, 0x735769d6da5690ceLL /* 935 */, + 0x0a234aa642391484LL /* 936 */, 0xf6f9508028f80d9dLL /* 937 */, + 0xb8e319a27ab3f215LL /* 938 */, 0x31ad9c1151341a4dLL /* 939 */, + 0x773c22a57bef5805LL /* 940 */, 0x45c7561a07968633LL /* 941 */, + 0xf913da9e249dbe36LL /* 942 */, 0xda652d9b78a64c68LL /* 943 */, + 0x4c27a97f3bc334efLL /* 944 */, 0x76621220e66b17f4LL /* 945 */, + 0x967743899acd7d0bLL /* 946 */, 0xf3ee5bcae0ed6782LL /* 947 */, + 0x409f753600c879fcLL /* 948 */, 0x06d09a39b5926db6LL /* 949 */, + 0x6f83aeb0317ac588LL /* 950 */, 0x01e6ca4a86381f21LL /* 951 */, + 0x66ff3462d19f3025LL /* 952 */, 0x72207c24ddfd3bfbLL /* 953 */, + 0x4af6b6d3e2ece2ebLL /* 954 */, 0x9c994dbec7ea08deLL /* 955 */, + 0x49ace597b09a8bc4LL /* 956 */, 0xb38c4766cf0797baLL /* 957 */, + 0x131b9373c57c2a75LL /* 958 */, 0xb1822cce61931e58LL /* 959 */, + 0x9d7555b909ba1c0cLL /* 960 */, 0x127fafdd937d11d2LL /* 961 */, + 0x29da3badc66d92e4LL /* 962 */, 0xa2c1d57154c2ecbcLL /* 963 */, + 0x58c5134d82f6fe24LL /* 964 */, 0x1c3ae3515b62274fLL /* 965 */, + 0xe907c82e01cb8126LL /* 966 */, 0xf8ed091913e37fcbLL /* 967 */, + 0x3249d8f9c80046c9LL /* 968 */, 0x80cf9bede388fb63LL /* 969 */, + 0x1881539a116cf19eLL /* 970 */, 0x5103f3f76bd52457LL /* 971 */, + 0x15b7e6f5ae47f7a8LL /* 972 */, 0xdbd7c6ded47e9ccfLL /* 973 */, + 0x44e55c410228bb1aLL /* 974 */, 0xb647d4255edb4e99LL /* 975 */, + 0x5d11882bb8aafc30LL /* 976 */, 0xf5098bbb29d3212aLL /* 977 */, + 0x8fb5ea14e90296b3LL /* 978 */, 0x677b942157dd025aLL /* 979 */, + 0xfb58e7c0a390acb5LL /* 980 */, 0x89d3674c83bd4a01LL /* 981 */, + 0x9e2da4df4bf3b93bLL /* 982 */, 0xfcc41e328cab4829LL /* 983 */, + 0x03f38c96ba582c52LL /* 984 */, 0xcad1bdbd7fd85db2LL /* 985 */, + 0xbbb442c16082ae83LL /* 986 */, 0xb95fe86ba5da9ab0LL /* 987 */, + 0xb22e04673771a93fLL /* 988 */, 0x845358c9493152d8LL /* 989 */, + 0xbe2a488697b4541eLL /* 990 */, 0x95a2dc2dd38e6966LL /* 991 */, + 0xc02c11ac923c852bLL /* 992 */, 0x2388b1990df2a87bLL /* 993 */, + 0x7c8008fa1b4f37beLL /* 994 */, 0x1f70d0c84d54e503LL /* 995 */, + 0x5490adec7ece57d4LL /* 996 */, 0x002b3c27d9063a3aLL /* 997 */, + 0x7eaea3848030a2bfLL /* 998 */, 0xc602326ded2003c0LL /* 999 */, + 0x83a7287d69a94086LL /* 1000 */, 0xc57a5fcb30f57a8aLL /* 1001 */, + 0xb56844e479ebe779LL /* 1002 */, 0xa373b40f05dcbce9LL /* 1003 */, + 0xd71a786e88570ee2LL /* 1004 */, 0x879cbacdbde8f6a0LL /* 1005 */, + 0x976ad1bcc164a32fLL /* 1006 */, 0xab21e25e9666d78bLL /* 1007 */, + 0x901063aae5e5c33cLL /* 1008 */, 0x9818b34448698d90LL /* 1009 */, + 0xe36487ae3e1e8abbLL /* 1010 */, 0xafbdf931893bdcb4LL /* 1011 */, + 0x6345a0dc5fbbd519LL /* 1012 */, 0x8628fe269b9465caLL /* 1013 */, + 0x1e5d01603f9c51ecLL /* 1014 */, 0x4de44006a15049b7LL /* 1015 */, + 0xbf6c70e5f776cbb1LL /* 1016 */, 0x411218f2ef552bedLL /* 1017 */, + 0xcb0c0708705a36a3LL /* 1018 */, 0xe74d14754f986044LL /* 1019 */, + 0xcd56d9430ea8280eLL /* 1020 */, 0xc12591d7535f5065LL /* 1021 */, + 0xc83223f1720aef96LL /* 1022 */, 0xc3a0396f7363a51fLL /* 1023 */ +}; + + +static void +print_abc( const char *text, u64 a, u64 b, u64 c ) +{ +/*printf("%s: %08X%08X %08X%08X %08X%08X\n", + text, + (u32)(a>>32), + (u32)(a), + (u32)(b>>32), + (u32)(b), + (u32)(c>>32), + (u32)(c) );*/ +} + +static void +print_data( const char *text, u64 a, u64 b, u64 c, + u64 d, u64 e, u64 f, + u64 g, u64 h ) +{ +/*printf("%s: %08X%08X %08X%08X %08X%08X %08X%08X\n" + "%s %08X%08X %08X%08X %08X%08X %08X%08X\n", + text, + (u32)(a>>32), + (u32)(a), + (u32)(b>>32), + (u32)(b), + (u32)(c>>32), + (u32)(c), + (u32)(d>>32), + (u32)(d), + text, + (u32)(e>>32), + (u32)(e), + (u32)(f>>32), + (u32)(f), + (u32)(g>>32), + (u32)(g), + (u32)(h>>32), + (u32)(h) );*/ +} + + +static void +burn_stack (int bytes) +{ + char buf[256]; + + memset (buf, 0, sizeof buf); + bytes -= sizeof buf; + if (bytes > 0) + burn_stack (bytes); +} + + + +static void +tiger_init( TIGER_CONTEXT *hd ) +{ + hd->a = 0x0123456789abcdefLL; + hd->b = 0xfedcba9876543210LL; + hd->c = 0xf096a5b4c3b2e187LL; + hd->nblocks = 0; + hd->count = 0; +} + +static void +round( u64 *ra, u64 *rb, u64 *rc, u64 x, int mul ) +{ + u64 a = *ra; + u64 b = *rb; + u64 c = *rc; + + c ^= x; + a -= sbox1[ c & 0xff ] ^ sbox2[ (c >> 16) & 0xff ] + ^ sbox3[ (c >> 32) & 0xff ] ^ sbox4[ (c >> 48) & 0xff ]; + b += sbox4[ (c >> 8) & 0xff ] ^ sbox3[ (c >> 24) & 0xff ] + ^ sbox2[ (c >> 40) & 0xff ] ^ sbox1[ (c >> 56) & 0xff ]; + b *= mul; + + *ra = a; + *rb = b; + *rc = c; +} + + +static void +pass( u64 *ra, u64 *rb, u64 *rc, u64 *x, int mul ) +{ + u64 a = *ra; + u64 b = *rb; + u64 c = *rc; + + round( &a, &b, &c, x[0], mul ); + round( &b, &c, &a, x[1], mul ); + round( &c, &a, &b, x[2], mul ); + round( &a, &b, &c, x[3], mul ); + round( &b, &c, &a, x[4], mul ); + round( &c, &a, &b, x[5], mul ); + round( &a, &b, &c, x[6], mul ); + round( &b, &c, &a, x[7], mul ); + + *ra = a; + *rb = b; + *rc = c; +} + + +static void +key_schedule( u64 *x ) +{ + x[0] -= x[7] ^ 0xa5a5a5a5a5a5a5a5LL; + x[1] ^= x[0]; + x[2] += x[1]; + x[3] -= x[2] ^ ((~x[1]) << 19 ); + x[4] ^= x[3]; + x[5] += x[4]; + x[6] -= x[5] ^ ((~x[4]) >> 23 ); + x[7] ^= x[6]; + x[0] += x[7]; + x[1] -= x[0] ^ ((~x[7]) << 19 ); + x[2] ^= x[1]; + x[3] += x[2]; + x[4] -= x[3] ^ ((~x[2]) >> 23 ); + x[5] ^= x[4]; + x[6] += x[5]; + x[7] -= x[6] ^ 0x0123456789abcdefLL; +} + + +/**************** + * Transform the message DATA which consists of 512 bytes (8 words) + */ +static void +transform( TIGER_CONTEXT *hd, byte *data ) +{ + u64 a,b,c,aa,bb,cc; + u64 x[8]; + #ifdef BIG_ENDIAN_HOST + #define MKWORD(d,n) \ + ( ((u64)(d)[8*(n)+7]) << 56 | ((u64)(d)[8*(n)+6]) << 48 \ + | ((u64)(d)[8*(n)+5]) << 40 | ((u64)(d)[8*(n)+4]) << 32 \ + | ((u64)(d)[8*(n)+3]) << 24 | ((u64)(d)[8*(n)+2]) << 16 \ + | ((u64)(d)[8*(n)+1]) << 8 | ((u64)(d)[8*(n) ]) ) + x[0] = MKWORD(data, 0); + x[1] = MKWORD(data, 1); + x[2] = MKWORD(data, 2); + x[3] = MKWORD(data, 3); + x[4] = MKWORD(data, 4); + x[5] = MKWORD(data, 5); + x[6] = MKWORD(data, 6); + x[7] = MKWORD(data, 7); + #undef MKWORD + #else + memcpy( &x[0], data, 64 ); + #endif + + /* save */ + a = aa = hd->a; + b = bb = hd->b; + c = cc = hd->c; + + print_data(" key0", x[0], x[1], x[2], x[3], x[4], x[5], x[6], x[7] ); + print_abc(" init", a, b, c ); + pass( &a, &b, &c, x, 5); + print_abc("pass1", a, b, c ); + key_schedule( x ); + pass( &c, &a, &b, x, 7); + print_abc("pass2", a, b, c ); + key_schedule( x ); + pass( &b, &c, &a, x, 9); + print_abc("pass3", a, b, c ); + + + /* feedforward */ + a ^= aa; + b -= bb; + c += cc; + /* store */ + hd->a = a; + hd->b = b; + hd->c = c; +} + + + +/* Update the message digest with the contents + * of INBUF with length INLEN. + */ +static void +tiger_write( TIGER_CONTEXT *hd, byte *inbuf, size_t inlen) +{ + if( hd->count == 64 ) { /* flush the buffer */ + transform( hd, hd->buf ); + burn_stack (21*8+11*sizeof(void*)); + hd->count = 0; + hd->nblocks++; + } + if( !inbuf ) + return; + if( hd->count ) { + for( ; inlen && hd->count < 64; inlen-- ) + hd->buf[hd->count++] = *inbuf++; + tiger_write( hd, NULL, 0 ); + if( !inlen ) + return; + } + + while( inlen >= 64 ) { + transform( hd, inbuf ); + hd->count = 0; + hd->nblocks++; + inlen -= 64; + inbuf += 64; + } + burn_stack (21*8+11*sizeof(void*)); + for( ; inlen && hd->count < 64; inlen-- ) + hd->buf[hd->count++] = *inbuf++; +} + + + +/* The routine terminates the computation + */ + +static void +tiger_final( TIGER_CONTEXT *hd ) +{ + u32 t, msb, lsb; + byte *p; + + tiger_write(hd, NULL, 0); /* flush */; + + t = hd->nblocks; + /* multiply by 64 to make a byte count */ + lsb = t << 6; + msb = t >> 26; + /* add the count */ + t = lsb; + if( (lsb += hd->count) < t ) + msb++; + /* multiply by 8 to make a bit count */ + t = lsb; + lsb <<= 3; + msb <<= 3; + msb |= t >> 29; + + if( hd->count < 56 ) { /* enough room */ + hd->buf[hd->count++] = 0x01; /* pad */ + while( hd->count < 56 ) + hd->buf[hd->count++] = 0; /* pad */ + } + else { /* need one extra block */ + hd->buf[hd->count++] = 0x01; /* pad character */ + while( hd->count < 64 ) + hd->buf[hd->count++] = 0; + tiger_write(hd, NULL, 0); /* flush */; + memset(hd->buf, 0, 56 ); /* fill next block with zeroes */ + } + /* append the 64 bit count */ + hd->buf[56] = lsb ; + hd->buf[57] = lsb >> 8; + hd->buf[58] = lsb >> 16; + hd->buf[59] = lsb >> 24; + hd->buf[60] = msb ; + hd->buf[61] = msb >> 8; + hd->buf[62] = msb >> 16; + hd->buf[63] = msb >> 24; + transform( hd, hd->buf ); + burn_stack (21*8+11*sizeof(void*)); + + p = hd->buf; + #ifdef BIG_ENDIAN_HOST + #define X(a) do { *(u64*)p = hd-> a ; p += 8; } while(0) + #else /* little endian */ + #define X(a) do { *p++ = hd-> a >> 56; *p++ = hd-> a >> 48; \ + *p++ = hd-> a >> 40; *p++ = hd-> a >> 32; \ + *p++ = hd-> a >> 24; *p++ = hd-> a >> 16; \ + *p++ = hd-> a >> 8; *p++ = hd-> a; } while(0) + #endif + X(a); + X(b); + X(c); + #undef X +} + +static byte * +tiger_read( TIGER_CONTEXT *hd ) +{ + return hd->buf; +} + +/**************** + * Return some information about the algorithm. We need algo here to + * distinguish different flavors of the algorithm. + * Returns: A pointer to string describing the algorithm or NULL if + * the ALGO is invalid. + */ +static const char * +tiger_get_info( int algo, size_t *contextsize, + byte **r_asnoid, int *r_asnlen, int *r_mdlen, + void (**r_init)( void *c ), + void (**r_write)( void *c, byte *buf, size_t nbytes ), + void (**r_final)( void *c ), + byte *(**r_read)( void *c ) + ) +{ + /* 40: SEQUENCE { + * 12: SEQUENCE { + * 8: OCTET STRING :54 49 47 45 52 31 39 32 + * 0: NULL + * : } + * 24: OCTET STRING + * : } + * + * By replacing the 5th byte (0x04) with 0x16 we would have; + * 8: IA5String 'TIGER192' + */ + static byte asn[18] = + { 0x30, 0x28, 0x30, 0x0c, 0x04, 0x08, 0x54, 0x49, 0x47, + 0x45, 0x52, 0x31, 0x39, 0x32, 0x05, 0x00, 0x04, 0x18 }; + + if( algo != 6 ) + return NULL; + + *contextsize = sizeof(TIGER_CONTEXT); + *r_asnoid = asn; + *r_asnlen = DIM(asn); + *r_mdlen = 24; + *(void (**)(TIGER_CONTEXT *))r_init = tiger_init; + *(void (**)(TIGER_CONTEXT *, byte*, size_t))r_write = tiger_write; + *(void (**)(TIGER_CONTEXT *))r_final = tiger_final; + *(byte *(**)(TIGER_CONTEXT *))r_read = tiger_read; + + return "TIGER192"; +} + + + +#ifndef IS_MODULE +static +#endif +const char * const gnupgext_version = "TIGER ($Revision$)"; + +static struct { + int class; + int version; + int value; + void (*func)(void); +} func_table[] = { + { 10, 1, 0, (void(*)(void))tiger_get_info }, + { 11, 1, 6 }, +}; + + + +/**************** + * Enumerate the names of the functions together with informations about + * this function. Set sequence to an integer with a initial value of 0 and + * do not change it. + * If what is 0 all kind of functions are returned. + * Return values: class := class of function: + * 10 = message digest algorithm info function + * 11 = integer with available md algorithms + * 20 = cipher algorithm info function + * 21 = integer with available cipher algorithms + * 30 = public key algorithm info function + * 31 = integer with available pubkey algorithms + * version = interface version of the function/pointer + * (currently this is 1 for all functions) + */ +#ifndef IS_MODULE +static +#endif +void * +gnupgext_enum_func( int what, int *sequence, int *class, int *vers ) +{ + void *ret; + int i = *sequence; + + do { + if( i >= DIM(func_table) || i < 0 ) { + /*fprintf(stderr, "failed\n");*/ + return NULL; + } + *class = func_table[i].class; + *vers = func_table[i].version; + switch( *class ) { + case 11: + case 21: + case 31: + ret = &func_table[i].value; + break; + default: + ret = func_table[i].func; + break; + } + i++; + } while( what && what != *class ); + + *sequence = i; + /*fprintf(stderr, "success\n");*/ + return ret; +} + + + +#ifndef IS_MODULE +void +tiger_constructor(void) +{ + register_internal_cipher_extension( gnupgext_version, + gnupgext_enum_func ); +} +#endif + + +#endif /* HAVE_U64_TYPEDEF */ + diff --git a/cipher/twofish.c b/cipher/twofish.c new file mode 100644 index 000000000..175f7c414 --- /dev/null +++ b/cipher/twofish.c @@ -0,0 +1,1136 @@ +/* Twofish for GPG + * By Matthew Skala <mskala@ansuz.sooke.bc.ca>, July 26, 1998 + * 256-bit key length added March 20, 1999 + * Some modifications to reduce the text size by Werner Koch, April, 1998 + * + * The original author has disclaimed all copyright interest in this + * code and thus putting it in the public domain. + * + * This code is a "clean room" implementation, written from the paper + * _Twofish: A 128-Bit Block Cipher_ by Bruce Schneier, John Kelsey, + * Doug Whiting, David Wagner, Chris Hall, and Niels Ferguson, available + * through http://www.counterpane.com/twofish.html + * + * For background information on multiplication in finite fields, used for + * the matrix operations in the key schedule, see the book _Contemporary + * Abstract Algebra_ by Joseph A. Gallian, especially chapter 22 in the + * Third Edition. + * + * Only the 128- and 256-bit key sizes are supported. This code is intended + * for GNU C on a 32-bit system, but it should work almost anywhere. Loops + * are unrolled, precomputation tables are used, etc., for maximum speed at + * some cost in memory consumption. */ + +#include <config.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> /* for memcmp() */ + +#include "types.h" /* for byte and u32 typedefs */ +#include "util.h" +#include "errors.h" +#include "dynload.h" + + +/* Prototype for the self-test function. */ +static const char *selftest(void); + +/* Structure for an expanded Twofish key. s contains the key-dependent + * S-boxes composed with the MDS matrix; w contains the eight "whitening" + * subkeys, K[0] through K[7]. k holds the remaining, "round" subkeys. Note + * that k[i] corresponds to what the Twofish paper calls K[i+8]. */ +typedef struct { + u32 s[4][256], w[8], k[32]; +} TWOFISH_context; + +/* These two tables are the q0 and q1 permutations, exactly as described in + * the Twofish paper. */ + +static const byte q0[256] = { + 0xA9, 0x67, 0xB3, 0xE8, 0x04, 0xFD, 0xA3, 0x76, 0x9A, 0x92, 0x80, 0x78, + 0xE4, 0xDD, 0xD1, 0x38, 0x0D, 0xC6, 0x35, 0x98, 0x18, 0xF7, 0xEC, 0x6C, + 0x43, 0x75, 0x37, 0x26, 0xFA, 0x13, 0x94, 0x48, 0xF2, 0xD0, 0x8B, 0x30, + 0x84, 0x54, 0xDF, 0x23, 0x19, 0x5B, 0x3D, 0x59, 0xF3, 0xAE, 0xA2, 0x82, + 0x63, 0x01, 0x83, 0x2E, 0xD9, 0x51, 0x9B, 0x7C, 0xA6, 0xEB, 0xA5, 0xBE, + 0x16, 0x0C, 0xE3, 0x61, 0xC0, 0x8C, 0x3A, 0xF5, 0x73, 0x2C, 0x25, 0x0B, + 0xBB, 0x4E, 0x89, 0x6B, 0x53, 0x6A, 0xB4, 0xF1, 0xE1, 0xE6, 0xBD, 0x45, + 0xE2, 0xF4, 0xB6, 0x66, 0xCC, 0x95, 0x03, 0x56, 0xD4, 0x1C, 0x1E, 0xD7, + 0xFB, 0xC3, 0x8E, 0xB5, 0xE9, 0xCF, 0xBF, 0xBA, 0xEA, 0x77, 0x39, 0xAF, + 0x33, 0xC9, 0x62, 0x71, 0x81, 0x79, 0x09, 0xAD, 0x24, 0xCD, 0xF9, 0xD8, + 0xE5, 0xC5, 0xB9, 0x4D, 0x44, 0x08, 0x86, 0xE7, 0xA1, 0x1D, 0xAA, 0xED, + 0x06, 0x70, 0xB2, 0xD2, 0x41, 0x7B, 0xA0, 0x11, 0x31, 0xC2, 0x27, 0x90, + 0x20, 0xF6, 0x60, 0xFF, 0x96, 0x5C, 0xB1, 0xAB, 0x9E, 0x9C, 0x52, 0x1B, + 0x5F, 0x93, 0x0A, 0xEF, 0x91, 0x85, 0x49, 0xEE, 0x2D, 0x4F, 0x8F, 0x3B, + 0x47, 0x87, 0x6D, 0x46, 0xD6, 0x3E, 0x69, 0x64, 0x2A, 0xCE, 0xCB, 0x2F, + 0xFC, 0x97, 0x05, 0x7A, 0xAC, 0x7F, 0xD5, 0x1A, 0x4B, 0x0E, 0xA7, 0x5A, + 0x28, 0x14, 0x3F, 0x29, 0x88, 0x3C, 0x4C, 0x02, 0xB8, 0xDA, 0xB0, 0x17, + 0x55, 0x1F, 0x8A, 0x7D, 0x57, 0xC7, 0x8D, 0x74, 0xB7, 0xC4, 0x9F, 0x72, + 0x7E, 0x15, 0x22, 0x12, 0x58, 0x07, 0x99, 0x34, 0x6E, 0x50, 0xDE, 0x68, + 0x65, 0xBC, 0xDB, 0xF8, 0xC8, 0xA8, 0x2B, 0x40, 0xDC, 0xFE, 0x32, 0xA4, + 0xCA, 0x10, 0x21, 0xF0, 0xD3, 0x5D, 0x0F, 0x00, 0x6F, 0x9D, 0x36, 0x42, + 0x4A, 0x5E, 0xC1, 0xE0 +}; + +static const byte q1[256] = { + 0x75, 0xF3, 0xC6, 0xF4, 0xDB, 0x7B, 0xFB, 0xC8, 0x4A, 0xD3, 0xE6, 0x6B, + 0x45, 0x7D, 0xE8, 0x4B, 0xD6, 0x32, 0xD8, 0xFD, 0x37, 0x71, 0xF1, 0xE1, + 0x30, 0x0F, 0xF8, 0x1B, 0x87, 0xFA, 0x06, 0x3F, 0x5E, 0xBA, 0xAE, 0x5B, + 0x8A, 0x00, 0xBC, 0x9D, 0x6D, 0xC1, 0xB1, 0x0E, 0x80, 0x5D, 0xD2, 0xD5, + 0xA0, 0x84, 0x07, 0x14, 0xB5, 0x90, 0x2C, 0xA3, 0xB2, 0x73, 0x4C, 0x54, + 0x92, 0x74, 0x36, 0x51, 0x38, 0xB0, 0xBD, 0x5A, 0xFC, 0x60, 0x62, 0x96, + 0x6C, 0x42, 0xF7, 0x10, 0x7C, 0x28, 0x27, 0x8C, 0x13, 0x95, 0x9C, 0xC7, + 0x24, 0x46, 0x3B, 0x70, 0xCA, 0xE3, 0x85, 0xCB, 0x11, 0xD0, 0x93, 0xB8, + 0xA6, 0x83, 0x20, 0xFF, 0x9F, 0x77, 0xC3, 0xCC, 0x03, 0x6F, 0x08, 0xBF, + 0x40, 0xE7, 0x2B, 0xE2, 0x79, 0x0C, 0xAA, 0x82, 0x41, 0x3A, 0xEA, 0xB9, + 0xE4, 0x9A, 0xA4, 0x97, 0x7E, 0xDA, 0x7A, 0x17, 0x66, 0x94, 0xA1, 0x1D, + 0x3D, 0xF0, 0xDE, 0xB3, 0x0B, 0x72, 0xA7, 0x1C, 0xEF, 0xD1, 0x53, 0x3E, + 0x8F, 0x33, 0x26, 0x5F, 0xEC, 0x76, 0x2A, 0x49, 0x81, 0x88, 0xEE, 0x21, + 0xC4, 0x1A, 0xEB, 0xD9, 0xC5, 0x39, 0x99, 0xCD, 0xAD, 0x31, 0x8B, 0x01, + 0x18, 0x23, 0xDD, 0x1F, 0x4E, 0x2D, 0xF9, 0x48, 0x4F, 0xF2, 0x65, 0x8E, + 0x78, 0x5C, 0x58, 0x19, 0x8D, 0xE5, 0x98, 0x57, 0x67, 0x7F, 0x05, 0x64, + 0xAF, 0x63, 0xB6, 0xFE, 0xF5, 0xB7, 0x3C, 0xA5, 0xCE, 0xE9, 0x68, 0x44, + 0xE0, 0x4D, 0x43, 0x69, 0x29, 0x2E, 0xAC, 0x15, 0x59, 0xA8, 0x0A, 0x9E, + 0x6E, 0x47, 0xDF, 0x34, 0x35, 0x6A, 0xCF, 0xDC, 0x22, 0xC9, 0xC0, 0x9B, + 0x89, 0xD4, 0xED, 0xAB, 0x12, 0xA2, 0x0D, 0x52, 0xBB, 0x02, 0x2F, 0xA9, + 0xD7, 0x61, 0x1E, 0xB4, 0x50, 0x04, 0xF6, 0xC2, 0x16, 0x25, 0x86, 0x56, + 0x55, 0x09, 0xBE, 0x91 +}; + +/* These MDS tables are actually tables of MDS composed with q0 and q1, + * because it is only ever used that way and we can save some time by + * precomputing. Of course the main saving comes from precomputing the + * GF(2^8) multiplication involved in the MDS matrix multiply; by looking + * things up in these tables we reduce the matrix multiply to four lookups + * and three XORs. Semi-formally, the definition of these tables is: + * mds[0][i] = MDS (q1[i] 0 0 0)^T mds[1][i] = MDS (0 q0[i] 0 0)^T + * mds[2][i] = MDS (0 0 q1[i] 0)^T mds[3][i] = MDS (0 0 0 q0[i])^T + * where ^T means "transpose", the matrix multiply is performed in GF(2^8) + * represented as GF(2)[x]/v(x) where v(x)=x^8+x^6+x^5+x^3+1 as described + * by Schneier et al, and I'm casually glossing over the byte/word + * conversion issues. */ + +static const u32 mds[4][256] = { + {0xBCBC3275, 0xECEC21F3, 0x202043C6, 0xB3B3C9F4, 0xDADA03DB, 0x02028B7B, + 0xE2E22BFB, 0x9E9EFAC8, 0xC9C9EC4A, 0xD4D409D3, 0x18186BE6, 0x1E1E9F6B, + 0x98980E45, 0xB2B2387D, 0xA6A6D2E8, 0x2626B74B, 0x3C3C57D6, 0x93938A32, + 0x8282EED8, 0x525298FD, 0x7B7BD437, 0xBBBB3771, 0x5B5B97F1, 0x474783E1, + 0x24243C30, 0x5151E20F, 0xBABAC6F8, 0x4A4AF31B, 0xBFBF4887, 0x0D0D70FA, + 0xB0B0B306, 0x7575DE3F, 0xD2D2FD5E, 0x7D7D20BA, 0x666631AE, 0x3A3AA35B, + 0x59591C8A, 0x00000000, 0xCDCD93BC, 0x1A1AE09D, 0xAEAE2C6D, 0x7F7FABC1, + 0x2B2BC7B1, 0xBEBEB90E, 0xE0E0A080, 0x8A8A105D, 0x3B3B52D2, 0x6464BAD5, + 0xD8D888A0, 0xE7E7A584, 0x5F5FE807, 0x1B1B1114, 0x2C2CC2B5, 0xFCFCB490, + 0x3131272C, 0x808065A3, 0x73732AB2, 0x0C0C8173, 0x79795F4C, 0x6B6B4154, + 0x4B4B0292, 0x53536974, 0x94948F36, 0x83831F51, 0x2A2A3638, 0xC4C49CB0, + 0x2222C8BD, 0xD5D5F85A, 0xBDBDC3FC, 0x48487860, 0xFFFFCE62, 0x4C4C0796, + 0x4141776C, 0xC7C7E642, 0xEBEB24F7, 0x1C1C1410, 0x5D5D637C, 0x36362228, + 0x6767C027, 0xE9E9AF8C, 0x4444F913, 0x1414EA95, 0xF5F5BB9C, 0xCFCF18C7, + 0x3F3F2D24, 0xC0C0E346, 0x7272DB3B, 0x54546C70, 0x29294CCA, 0xF0F035E3, + 0x0808FE85, 0xC6C617CB, 0xF3F34F11, 0x8C8CE4D0, 0xA4A45993, 0xCACA96B8, + 0x68683BA6, 0xB8B84D83, 0x38382820, 0xE5E52EFF, 0xADAD569F, 0x0B0B8477, + 0xC8C81DC3, 0x9999FFCC, 0x5858ED03, 0x19199A6F, 0x0E0E0A08, 0x95957EBF, + 0x70705040, 0xF7F730E7, 0x6E6ECF2B, 0x1F1F6EE2, 0xB5B53D79, 0x09090F0C, + 0x616134AA, 0x57571682, 0x9F9F0B41, 0x9D9D803A, 0x111164EA, 0x2525CDB9, + 0xAFAFDDE4, 0x4545089A, 0xDFDF8DA4, 0xA3A35C97, 0xEAEAD57E, 0x353558DA, + 0xEDEDD07A, 0x4343FC17, 0xF8F8CB66, 0xFBFBB194, 0x3737D3A1, 0xFAFA401D, + 0xC2C2683D, 0xB4B4CCF0, 0x32325DDE, 0x9C9C71B3, 0x5656E70B, 0xE3E3DA72, + 0x878760A7, 0x15151B1C, 0xF9F93AEF, 0x6363BFD1, 0x3434A953, 0x9A9A853E, + 0xB1B1428F, 0x7C7CD133, 0x88889B26, 0x3D3DA65F, 0xA1A1D7EC, 0xE4E4DF76, + 0x8181942A, 0x91910149, 0x0F0FFB81, 0xEEEEAA88, 0x161661EE, 0xD7D77321, + 0x9797F5C4, 0xA5A5A81A, 0xFEFE3FEB, 0x6D6DB5D9, 0x7878AEC5, 0xC5C56D39, + 0x1D1DE599, 0x7676A4CD, 0x3E3EDCAD, 0xCBCB6731, 0xB6B6478B, 0xEFEF5B01, + 0x12121E18, 0x6060C523, 0x6A6AB0DD, 0x4D4DF61F, 0xCECEE94E, 0xDEDE7C2D, + 0x55559DF9, 0x7E7E5A48, 0x2121B24F, 0x03037AF2, 0xA0A02665, 0x5E5E198E, + 0x5A5A6678, 0x65654B5C, 0x62624E58, 0xFDFD4519, 0x0606F48D, 0x404086E5, + 0xF2F2BE98, 0x3333AC57, 0x17179067, 0x05058E7F, 0xE8E85E05, 0x4F4F7D64, + 0x89896AAF, 0x10109563, 0x74742FB6, 0x0A0A75FE, 0x5C5C92F5, 0x9B9B74B7, + 0x2D2D333C, 0x3030D6A5, 0x2E2E49CE, 0x494989E9, 0x46467268, 0x77775544, + 0xA8A8D8E0, 0x9696044D, 0x2828BD43, 0xA9A92969, 0xD9D97929, 0x8686912E, + 0xD1D187AC, 0xF4F44A15, 0x8D8D1559, 0xD6D682A8, 0xB9B9BC0A, 0x42420D9E, + 0xF6F6C16E, 0x2F2FB847, 0xDDDD06DF, 0x23233934, 0xCCCC6235, 0xF1F1C46A, + 0xC1C112CF, 0x8585EBDC, 0x8F8F9E22, 0x7171A1C9, 0x9090F0C0, 0xAAAA539B, + 0x0101F189, 0x8B8BE1D4, 0x4E4E8CED, 0x8E8E6FAB, 0xABABA212, 0x6F6F3EA2, + 0xE6E6540D, 0xDBDBF252, 0x92927BBB, 0xB7B7B602, 0x6969CA2F, 0x3939D9A9, + 0xD3D30CD7, 0xA7A72361, 0xA2A2AD1E, 0xC3C399B4, 0x6C6C4450, 0x07070504, + 0x04047FF6, 0x272746C2, 0xACACA716, 0xD0D07625, 0x50501386, 0xDCDCF756, + 0x84841A55, 0xE1E15109, 0x7A7A25BE, 0x1313EF91}, + + {0xA9D93939, 0x67901717, 0xB3719C9C, 0xE8D2A6A6, 0x04050707, 0xFD985252, + 0xA3658080, 0x76DFE4E4, 0x9A084545, 0x92024B4B, 0x80A0E0E0, 0x78665A5A, + 0xE4DDAFAF, 0xDDB06A6A, 0xD1BF6363, 0x38362A2A, 0x0D54E6E6, 0xC6432020, + 0x3562CCCC, 0x98BEF2F2, 0x181E1212, 0xF724EBEB, 0xECD7A1A1, 0x6C774141, + 0x43BD2828, 0x7532BCBC, 0x37D47B7B, 0x269B8888, 0xFA700D0D, 0x13F94444, + 0x94B1FBFB, 0x485A7E7E, 0xF27A0303, 0xD0E48C8C, 0x8B47B6B6, 0x303C2424, + 0x84A5E7E7, 0x54416B6B, 0xDF06DDDD, 0x23C56060, 0x1945FDFD, 0x5BA33A3A, + 0x3D68C2C2, 0x59158D8D, 0xF321ECEC, 0xAE316666, 0xA23E6F6F, 0x82165757, + 0x63951010, 0x015BEFEF, 0x834DB8B8, 0x2E918686, 0xD9B56D6D, 0x511F8383, + 0x9B53AAAA, 0x7C635D5D, 0xA63B6868, 0xEB3FFEFE, 0xA5D63030, 0xBE257A7A, + 0x16A7ACAC, 0x0C0F0909, 0xE335F0F0, 0x6123A7A7, 0xC0F09090, 0x8CAFE9E9, + 0x3A809D9D, 0xF5925C5C, 0x73810C0C, 0x2C273131, 0x2576D0D0, 0x0BE75656, + 0xBB7B9292, 0x4EE9CECE, 0x89F10101, 0x6B9F1E1E, 0x53A93434, 0x6AC4F1F1, + 0xB499C3C3, 0xF1975B5B, 0xE1834747, 0xE66B1818, 0xBDC82222, 0x450E9898, + 0xE26E1F1F, 0xF4C9B3B3, 0xB62F7474, 0x66CBF8F8, 0xCCFF9999, 0x95EA1414, + 0x03ED5858, 0x56F7DCDC, 0xD4E18B8B, 0x1C1B1515, 0x1EADA2A2, 0xD70CD3D3, + 0xFB2BE2E2, 0xC31DC8C8, 0x8E195E5E, 0xB5C22C2C, 0xE9894949, 0xCF12C1C1, + 0xBF7E9595, 0xBA207D7D, 0xEA641111, 0x77840B0B, 0x396DC5C5, 0xAF6A8989, + 0x33D17C7C, 0xC9A17171, 0x62CEFFFF, 0x7137BBBB, 0x81FB0F0F, 0x793DB5B5, + 0x0951E1E1, 0xADDC3E3E, 0x242D3F3F, 0xCDA47676, 0xF99D5555, 0xD8EE8282, + 0xE5864040, 0xC5AE7878, 0xB9CD2525, 0x4D049696, 0x44557777, 0x080A0E0E, + 0x86135050, 0xE730F7F7, 0xA1D33737, 0x1D40FAFA, 0xAA346161, 0xED8C4E4E, + 0x06B3B0B0, 0x706C5454, 0xB22A7373, 0xD2523B3B, 0x410B9F9F, 0x7B8B0202, + 0xA088D8D8, 0x114FF3F3, 0x3167CBCB, 0xC2462727, 0x27C06767, 0x90B4FCFC, + 0x20283838, 0xF67F0404, 0x60784848, 0xFF2EE5E5, 0x96074C4C, 0x5C4B6565, + 0xB1C72B2B, 0xAB6F8E8E, 0x9E0D4242, 0x9CBBF5F5, 0x52F2DBDB, 0x1BF34A4A, + 0x5FA63D3D, 0x9359A4A4, 0x0ABCB9B9, 0xEF3AF9F9, 0x91EF1313, 0x85FE0808, + 0x49019191, 0xEE611616, 0x2D7CDEDE, 0x4FB22121, 0x8F42B1B1, 0x3BDB7272, + 0x47B82F2F, 0x8748BFBF, 0x6D2CAEAE, 0x46E3C0C0, 0xD6573C3C, 0x3E859A9A, + 0x6929A9A9, 0x647D4F4F, 0x2A948181, 0xCE492E2E, 0xCB17C6C6, 0x2FCA6969, + 0xFCC3BDBD, 0x975CA3A3, 0x055EE8E8, 0x7AD0EDED, 0xAC87D1D1, 0x7F8E0505, + 0xD5BA6464, 0x1AA8A5A5, 0x4BB72626, 0x0EB9BEBE, 0xA7608787, 0x5AF8D5D5, + 0x28223636, 0x14111B1B, 0x3FDE7575, 0x2979D9D9, 0x88AAEEEE, 0x3C332D2D, + 0x4C5F7979, 0x02B6B7B7, 0xB896CACA, 0xDA583535, 0xB09CC4C4, 0x17FC4343, + 0x551A8484, 0x1FF64D4D, 0x8A1C5959, 0x7D38B2B2, 0x57AC3333, 0xC718CFCF, + 0x8DF40606, 0x74695353, 0xB7749B9B, 0xC4F59797, 0x9F56ADAD, 0x72DAE3E3, + 0x7ED5EAEA, 0x154AF4F4, 0x229E8F8F, 0x12A2ABAB, 0x584E6262, 0x07E85F5F, + 0x99E51D1D, 0x34392323, 0x6EC1F6F6, 0x50446C6C, 0xDE5D3232, 0x68724646, + 0x6526A0A0, 0xBC93CDCD, 0xDB03DADA, 0xF8C6BABA, 0xC8FA9E9E, 0xA882D6D6, + 0x2BCF6E6E, 0x40507070, 0xDCEB8585, 0xFE750A0A, 0x328A9393, 0xA48DDFDF, + 0xCA4C2929, 0x10141C1C, 0x2173D7D7, 0xF0CCB4B4, 0xD309D4D4, 0x5D108A8A, + 0x0FE25151, 0x00000000, 0x6F9A1919, 0x9DE01A1A, 0x368F9494, 0x42E6C7C7, + 0x4AECC9C9, 0x5EFDD2D2, 0xC1AB7F7F, 0xE0D8A8A8}, + + {0xBC75BC32, 0xECF3EC21, 0x20C62043, 0xB3F4B3C9, 0xDADBDA03, 0x027B028B, + 0xE2FBE22B, 0x9EC89EFA, 0xC94AC9EC, 0xD4D3D409, 0x18E6186B, 0x1E6B1E9F, + 0x9845980E, 0xB27DB238, 0xA6E8A6D2, 0x264B26B7, 0x3CD63C57, 0x9332938A, + 0x82D882EE, 0x52FD5298, 0x7B377BD4, 0xBB71BB37, 0x5BF15B97, 0x47E14783, + 0x2430243C, 0x510F51E2, 0xBAF8BAC6, 0x4A1B4AF3, 0xBF87BF48, 0x0DFA0D70, + 0xB006B0B3, 0x753F75DE, 0xD25ED2FD, 0x7DBA7D20, 0x66AE6631, 0x3A5B3AA3, + 0x598A591C, 0x00000000, 0xCDBCCD93, 0x1A9D1AE0, 0xAE6DAE2C, 0x7FC17FAB, + 0x2BB12BC7, 0xBE0EBEB9, 0xE080E0A0, 0x8A5D8A10, 0x3BD23B52, 0x64D564BA, + 0xD8A0D888, 0xE784E7A5, 0x5F075FE8, 0x1B141B11, 0x2CB52CC2, 0xFC90FCB4, + 0x312C3127, 0x80A38065, 0x73B2732A, 0x0C730C81, 0x794C795F, 0x6B546B41, + 0x4B924B02, 0x53745369, 0x9436948F, 0x8351831F, 0x2A382A36, 0xC4B0C49C, + 0x22BD22C8, 0xD55AD5F8, 0xBDFCBDC3, 0x48604878, 0xFF62FFCE, 0x4C964C07, + 0x416C4177, 0xC742C7E6, 0xEBF7EB24, 0x1C101C14, 0x5D7C5D63, 0x36283622, + 0x672767C0, 0xE98CE9AF, 0x441344F9, 0x149514EA, 0xF59CF5BB, 0xCFC7CF18, + 0x3F243F2D, 0xC046C0E3, 0x723B72DB, 0x5470546C, 0x29CA294C, 0xF0E3F035, + 0x088508FE, 0xC6CBC617, 0xF311F34F, 0x8CD08CE4, 0xA493A459, 0xCAB8CA96, + 0x68A6683B, 0xB883B84D, 0x38203828, 0xE5FFE52E, 0xAD9FAD56, 0x0B770B84, + 0xC8C3C81D, 0x99CC99FF, 0x580358ED, 0x196F199A, 0x0E080E0A, 0x95BF957E, + 0x70407050, 0xF7E7F730, 0x6E2B6ECF, 0x1FE21F6E, 0xB579B53D, 0x090C090F, + 0x61AA6134, 0x57825716, 0x9F419F0B, 0x9D3A9D80, 0x11EA1164, 0x25B925CD, + 0xAFE4AFDD, 0x459A4508, 0xDFA4DF8D, 0xA397A35C, 0xEA7EEAD5, 0x35DA3558, + 0xED7AEDD0, 0x431743FC, 0xF866F8CB, 0xFB94FBB1, 0x37A137D3, 0xFA1DFA40, + 0xC23DC268, 0xB4F0B4CC, 0x32DE325D, 0x9CB39C71, 0x560B56E7, 0xE372E3DA, + 0x87A78760, 0x151C151B, 0xF9EFF93A, 0x63D163BF, 0x345334A9, 0x9A3E9A85, + 0xB18FB142, 0x7C337CD1, 0x8826889B, 0x3D5F3DA6, 0xA1ECA1D7, 0xE476E4DF, + 0x812A8194, 0x91499101, 0x0F810FFB, 0xEE88EEAA, 0x16EE1661, 0xD721D773, + 0x97C497F5, 0xA51AA5A8, 0xFEEBFE3F, 0x6DD96DB5, 0x78C578AE, 0xC539C56D, + 0x1D991DE5, 0x76CD76A4, 0x3EAD3EDC, 0xCB31CB67, 0xB68BB647, 0xEF01EF5B, + 0x1218121E, 0x602360C5, 0x6ADD6AB0, 0x4D1F4DF6, 0xCE4ECEE9, 0xDE2DDE7C, + 0x55F9559D, 0x7E487E5A, 0x214F21B2, 0x03F2037A, 0xA065A026, 0x5E8E5E19, + 0x5A785A66, 0x655C654B, 0x6258624E, 0xFD19FD45, 0x068D06F4, 0x40E54086, + 0xF298F2BE, 0x335733AC, 0x17671790, 0x057F058E, 0xE805E85E, 0x4F644F7D, + 0x89AF896A, 0x10631095, 0x74B6742F, 0x0AFE0A75, 0x5CF55C92, 0x9BB79B74, + 0x2D3C2D33, 0x30A530D6, 0x2ECE2E49, 0x49E94989, 0x46684672, 0x77447755, + 0xA8E0A8D8, 0x964D9604, 0x284328BD, 0xA969A929, 0xD929D979, 0x862E8691, + 0xD1ACD187, 0xF415F44A, 0x8D598D15, 0xD6A8D682, 0xB90AB9BC, 0x429E420D, + 0xF66EF6C1, 0x2F472FB8, 0xDDDFDD06, 0x23342339, 0xCC35CC62, 0xF16AF1C4, + 0xC1CFC112, 0x85DC85EB, 0x8F228F9E, 0x71C971A1, 0x90C090F0, 0xAA9BAA53, + 0x018901F1, 0x8BD48BE1, 0x4EED4E8C, 0x8EAB8E6F, 0xAB12ABA2, 0x6FA26F3E, + 0xE60DE654, 0xDB52DBF2, 0x92BB927B, 0xB702B7B6, 0x692F69CA, 0x39A939D9, + 0xD3D7D30C, 0xA761A723, 0xA21EA2AD, 0xC3B4C399, 0x6C506C44, 0x07040705, + 0x04F6047F, 0x27C22746, 0xAC16ACA7, 0xD025D076, 0x50865013, 0xDC56DCF7, + 0x8455841A, 0xE109E151, 0x7ABE7A25, 0x139113EF}, + + {0xD939A9D9, 0x90176790, 0x719CB371, 0xD2A6E8D2, 0x05070405, 0x9852FD98, + 0x6580A365, 0xDFE476DF, 0x08459A08, 0x024B9202, 0xA0E080A0, 0x665A7866, + 0xDDAFE4DD, 0xB06ADDB0, 0xBF63D1BF, 0x362A3836, 0x54E60D54, 0x4320C643, + 0x62CC3562, 0xBEF298BE, 0x1E12181E, 0x24EBF724, 0xD7A1ECD7, 0x77416C77, + 0xBD2843BD, 0x32BC7532, 0xD47B37D4, 0x9B88269B, 0x700DFA70, 0xF94413F9, + 0xB1FB94B1, 0x5A7E485A, 0x7A03F27A, 0xE48CD0E4, 0x47B68B47, 0x3C24303C, + 0xA5E784A5, 0x416B5441, 0x06DDDF06, 0xC56023C5, 0x45FD1945, 0xA33A5BA3, + 0x68C23D68, 0x158D5915, 0x21ECF321, 0x3166AE31, 0x3E6FA23E, 0x16578216, + 0x95106395, 0x5BEF015B, 0x4DB8834D, 0x91862E91, 0xB56DD9B5, 0x1F83511F, + 0x53AA9B53, 0x635D7C63, 0x3B68A63B, 0x3FFEEB3F, 0xD630A5D6, 0x257ABE25, + 0xA7AC16A7, 0x0F090C0F, 0x35F0E335, 0x23A76123, 0xF090C0F0, 0xAFE98CAF, + 0x809D3A80, 0x925CF592, 0x810C7381, 0x27312C27, 0x76D02576, 0xE7560BE7, + 0x7B92BB7B, 0xE9CE4EE9, 0xF10189F1, 0x9F1E6B9F, 0xA93453A9, 0xC4F16AC4, + 0x99C3B499, 0x975BF197, 0x8347E183, 0x6B18E66B, 0xC822BDC8, 0x0E98450E, + 0x6E1FE26E, 0xC9B3F4C9, 0x2F74B62F, 0xCBF866CB, 0xFF99CCFF, 0xEA1495EA, + 0xED5803ED, 0xF7DC56F7, 0xE18BD4E1, 0x1B151C1B, 0xADA21EAD, 0x0CD3D70C, + 0x2BE2FB2B, 0x1DC8C31D, 0x195E8E19, 0xC22CB5C2, 0x8949E989, 0x12C1CF12, + 0x7E95BF7E, 0x207DBA20, 0x6411EA64, 0x840B7784, 0x6DC5396D, 0x6A89AF6A, + 0xD17C33D1, 0xA171C9A1, 0xCEFF62CE, 0x37BB7137, 0xFB0F81FB, 0x3DB5793D, + 0x51E10951, 0xDC3EADDC, 0x2D3F242D, 0xA476CDA4, 0x9D55F99D, 0xEE82D8EE, + 0x8640E586, 0xAE78C5AE, 0xCD25B9CD, 0x04964D04, 0x55774455, 0x0A0E080A, + 0x13508613, 0x30F7E730, 0xD337A1D3, 0x40FA1D40, 0x3461AA34, 0x8C4EED8C, + 0xB3B006B3, 0x6C54706C, 0x2A73B22A, 0x523BD252, 0x0B9F410B, 0x8B027B8B, + 0x88D8A088, 0x4FF3114F, 0x67CB3167, 0x4627C246, 0xC06727C0, 0xB4FC90B4, + 0x28382028, 0x7F04F67F, 0x78486078, 0x2EE5FF2E, 0x074C9607, 0x4B655C4B, + 0xC72BB1C7, 0x6F8EAB6F, 0x0D429E0D, 0xBBF59CBB, 0xF2DB52F2, 0xF34A1BF3, + 0xA63D5FA6, 0x59A49359, 0xBCB90ABC, 0x3AF9EF3A, 0xEF1391EF, 0xFE0885FE, + 0x01914901, 0x6116EE61, 0x7CDE2D7C, 0xB2214FB2, 0x42B18F42, 0xDB723BDB, + 0xB82F47B8, 0x48BF8748, 0x2CAE6D2C, 0xE3C046E3, 0x573CD657, 0x859A3E85, + 0x29A96929, 0x7D4F647D, 0x94812A94, 0x492ECE49, 0x17C6CB17, 0xCA692FCA, + 0xC3BDFCC3, 0x5CA3975C, 0x5EE8055E, 0xD0ED7AD0, 0x87D1AC87, 0x8E057F8E, + 0xBA64D5BA, 0xA8A51AA8, 0xB7264BB7, 0xB9BE0EB9, 0x6087A760, 0xF8D55AF8, + 0x22362822, 0x111B1411, 0xDE753FDE, 0x79D92979, 0xAAEE88AA, 0x332D3C33, + 0x5F794C5F, 0xB6B702B6, 0x96CAB896, 0x5835DA58, 0x9CC4B09C, 0xFC4317FC, + 0x1A84551A, 0xF64D1FF6, 0x1C598A1C, 0x38B27D38, 0xAC3357AC, 0x18CFC718, + 0xF4068DF4, 0x69537469, 0x749BB774, 0xF597C4F5, 0x56AD9F56, 0xDAE372DA, + 0xD5EA7ED5, 0x4AF4154A, 0x9E8F229E, 0xA2AB12A2, 0x4E62584E, 0xE85F07E8, + 0xE51D99E5, 0x39233439, 0xC1F66EC1, 0x446C5044, 0x5D32DE5D, 0x72466872, + 0x26A06526, 0x93CDBC93, 0x03DADB03, 0xC6BAF8C6, 0xFA9EC8FA, 0x82D6A882, + 0xCF6E2BCF, 0x50704050, 0xEB85DCEB, 0x750AFE75, 0x8A93328A, 0x8DDFA48D, + 0x4C29CA4C, 0x141C1014, 0x73D72173, 0xCCB4F0CC, 0x09D4D309, 0x108A5D10, + 0xE2510FE2, 0x00000000, 0x9A196F9A, 0xE01A9DE0, 0x8F94368F, 0xE6C742E6, + 0xECC94AEC, 0xFDD25EFD, 0xAB7FC1AB, 0xD8A8E0D8} +}; + +/* The exp_to_poly and poly_to_exp tables are used to perform efficient + * operations in GF(2^8) represented as GF(2)[x]/w(x) where + * w(x)=x^8+x^6+x^3+x^2+1. We care about doing that because it's part of the + * definition of the RS matrix in the key schedule. Elements of that field + * are polynomials of degree not greater than 7 and all coefficients 0 or 1, + * which can be represented naturally by bytes (just substitute x=2). In that + * form, GF(2^8) addition is the same as bitwise XOR, but GF(2^8) + * multiplication is inefficient without hardware support. To multiply + * faster, I make use of the fact x is a generator for the nonzero elements, + * so that every element p of GF(2)[x]/w(x) is either 0 or equal to (x)^n for + * some n in 0..254. Note that that caret is exponentiation in GF(2^8), + * *not* polynomial notation. So if I want to compute pq where p and q are + * in GF(2^8), I can just say: + * 1. if p=0 or q=0 then pq=0 + * 2. otherwise, find m and n such that p=x^m and q=x^n + * 3. pq=(x^m)(x^n)=x^(m+n), so add m and n and find pq + * The translations in steps 2 and 3 are looked up in the tables + * poly_to_exp (for step 2) and exp_to_poly (for step 3). To see this + * in action, look at the CALC_S macro. As additional wrinkles, note that + * one of my operands is always a constant, so the poly_to_exp lookup on it + * is done in advance; I included the original values in the comments so + * readers can have some chance of recognizing that this *is* the RS matrix + * from the Twofish paper. I've only included the table entries I actually + * need; I never do a lookup on a variable input of zero and the biggest + * exponents I'll ever see are 254 (variable) and 237 (constant), so they'll + * never sum to more than 491. I'm repeating part of the exp_to_poly table + * so that I don't have to do mod-255 reduction in the exponent arithmetic. + * Since I know my constant operands are never zero, I only have to worry + * about zero values in the variable operand, and I do it with a simple + * conditional branch. I know conditionals are expensive, but I couldn't + * see a non-horrible way of avoiding them, and I did manage to group the + * statements so that each if covers four group multiplications. */ + +static const byte poly_to_exp[255] = { + 0x00, 0x01, 0x17, 0x02, 0x2E, 0x18, 0x53, 0x03, 0x6A, 0x2F, 0x93, 0x19, + 0x34, 0x54, 0x45, 0x04, 0x5C, 0x6B, 0xB6, 0x30, 0xA6, 0x94, 0x4B, 0x1A, + 0x8C, 0x35, 0x81, 0x55, 0xAA, 0x46, 0x0D, 0x05, 0x24, 0x5D, 0x87, 0x6C, + 0x9B, 0xB7, 0xC1, 0x31, 0x2B, 0xA7, 0xA3, 0x95, 0x98, 0x4C, 0xCA, 0x1B, + 0xE6, 0x8D, 0x73, 0x36, 0xCD, 0x82, 0x12, 0x56, 0x62, 0xAB, 0xF0, 0x47, + 0x4F, 0x0E, 0xBD, 0x06, 0xD4, 0x25, 0xD2, 0x5E, 0x27, 0x88, 0x66, 0x6D, + 0xD6, 0x9C, 0x79, 0xB8, 0x08, 0xC2, 0xDF, 0x32, 0x68, 0x2C, 0xFD, 0xA8, + 0x8A, 0xA4, 0x5A, 0x96, 0x29, 0x99, 0x22, 0x4D, 0x60, 0xCB, 0xE4, 0x1C, + 0x7B, 0xE7, 0x3B, 0x8E, 0x9E, 0x74, 0xF4, 0x37, 0xD8, 0xCE, 0xF9, 0x83, + 0x6F, 0x13, 0xB2, 0x57, 0xE1, 0x63, 0xDC, 0xAC, 0xC4, 0xF1, 0xAF, 0x48, + 0x0A, 0x50, 0x42, 0x0F, 0xBA, 0xBE, 0xC7, 0x07, 0xDE, 0xD5, 0x78, 0x26, + 0x65, 0xD3, 0xD1, 0x5F, 0xE3, 0x28, 0x21, 0x89, 0x59, 0x67, 0xFC, 0x6E, + 0xB1, 0xD7, 0xF8, 0x9D, 0xF3, 0x7A, 0x3A, 0xB9, 0xC6, 0x09, 0x41, 0xC3, + 0xAE, 0xE0, 0xDB, 0x33, 0x44, 0x69, 0x92, 0x2D, 0x52, 0xFE, 0x16, 0xA9, + 0x0C, 0x8B, 0x80, 0xA5, 0x4A, 0x5B, 0xB5, 0x97, 0xC9, 0x2A, 0xA2, 0x9A, + 0xC0, 0x23, 0x86, 0x4E, 0xBC, 0x61, 0xEF, 0xCC, 0x11, 0xE5, 0x72, 0x1D, + 0x3D, 0x7C, 0xEB, 0xE8, 0xE9, 0x3C, 0xEA, 0x8F, 0x7D, 0x9F, 0xEC, 0x75, + 0x1E, 0xF5, 0x3E, 0x38, 0xF6, 0xD9, 0x3F, 0xCF, 0x76, 0xFA, 0x1F, 0x84, + 0xA0, 0x70, 0xED, 0x14, 0x90, 0xB3, 0x7E, 0x58, 0xFB, 0xE2, 0x20, 0x64, + 0xD0, 0xDD, 0x77, 0xAD, 0xDA, 0xC5, 0x40, 0xF2, 0x39, 0xB0, 0xF7, 0x49, + 0xB4, 0x0B, 0x7F, 0x51, 0x15, 0x43, 0x91, 0x10, 0x71, 0xBB, 0xEE, 0xBF, + 0x85, 0xC8, 0xA1 +}; + +static const byte exp_to_poly[492] = { + 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x4D, 0x9A, 0x79, 0xF2, + 0xA9, 0x1F, 0x3E, 0x7C, 0xF8, 0xBD, 0x37, 0x6E, 0xDC, 0xF5, 0xA7, 0x03, + 0x06, 0x0C, 0x18, 0x30, 0x60, 0xC0, 0xCD, 0xD7, 0xE3, 0x8B, 0x5B, 0xB6, + 0x21, 0x42, 0x84, 0x45, 0x8A, 0x59, 0xB2, 0x29, 0x52, 0xA4, 0x05, 0x0A, + 0x14, 0x28, 0x50, 0xA0, 0x0D, 0x1A, 0x34, 0x68, 0xD0, 0xED, 0x97, 0x63, + 0xC6, 0xC1, 0xCF, 0xD3, 0xEB, 0x9B, 0x7B, 0xF6, 0xA1, 0x0F, 0x1E, 0x3C, + 0x78, 0xF0, 0xAD, 0x17, 0x2E, 0x5C, 0xB8, 0x3D, 0x7A, 0xF4, 0xA5, 0x07, + 0x0E, 0x1C, 0x38, 0x70, 0xE0, 0x8D, 0x57, 0xAE, 0x11, 0x22, 0x44, 0x88, + 0x5D, 0xBA, 0x39, 0x72, 0xE4, 0x85, 0x47, 0x8E, 0x51, 0xA2, 0x09, 0x12, + 0x24, 0x48, 0x90, 0x6D, 0xDA, 0xF9, 0xBF, 0x33, 0x66, 0xCC, 0xD5, 0xE7, + 0x83, 0x4B, 0x96, 0x61, 0xC2, 0xC9, 0xDF, 0xF3, 0xAB, 0x1B, 0x36, 0x6C, + 0xD8, 0xFD, 0xB7, 0x23, 0x46, 0x8C, 0x55, 0xAA, 0x19, 0x32, 0x64, 0xC8, + 0xDD, 0xF7, 0xA3, 0x0B, 0x16, 0x2C, 0x58, 0xB0, 0x2D, 0x5A, 0xB4, 0x25, + 0x4A, 0x94, 0x65, 0xCA, 0xD9, 0xFF, 0xB3, 0x2B, 0x56, 0xAC, 0x15, 0x2A, + 0x54, 0xA8, 0x1D, 0x3A, 0x74, 0xE8, 0x9D, 0x77, 0xEE, 0x91, 0x6F, 0xDE, + 0xF1, 0xAF, 0x13, 0x26, 0x4C, 0x98, 0x7D, 0xFA, 0xB9, 0x3F, 0x7E, 0xFC, + 0xB5, 0x27, 0x4E, 0x9C, 0x75, 0xEA, 0x99, 0x7F, 0xFE, 0xB1, 0x2F, 0x5E, + 0xBC, 0x35, 0x6A, 0xD4, 0xE5, 0x87, 0x43, 0x86, 0x41, 0x82, 0x49, 0x92, + 0x69, 0xD2, 0xE9, 0x9F, 0x73, 0xE6, 0x81, 0x4F, 0x9E, 0x71, 0xE2, 0x89, + 0x5F, 0xBE, 0x31, 0x62, 0xC4, 0xC5, 0xC7, 0xC3, 0xCB, 0xDB, 0xFB, 0xBB, + 0x3B, 0x76, 0xEC, 0x95, 0x67, 0xCE, 0xD1, 0xEF, 0x93, 0x6B, 0xD6, 0xE1, + 0x8F, 0x53, 0xA6, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x4D, + 0x9A, 0x79, 0xF2, 0xA9, 0x1F, 0x3E, 0x7C, 0xF8, 0xBD, 0x37, 0x6E, 0xDC, + 0xF5, 0xA7, 0x03, 0x06, 0x0C, 0x18, 0x30, 0x60, 0xC0, 0xCD, 0xD7, 0xE3, + 0x8B, 0x5B, 0xB6, 0x21, 0x42, 0x84, 0x45, 0x8A, 0x59, 0xB2, 0x29, 0x52, + 0xA4, 0x05, 0x0A, 0x14, 0x28, 0x50, 0xA0, 0x0D, 0x1A, 0x34, 0x68, 0xD0, + 0xED, 0x97, 0x63, 0xC6, 0xC1, 0xCF, 0xD3, 0xEB, 0x9B, 0x7B, 0xF6, 0xA1, + 0x0F, 0x1E, 0x3C, 0x78, 0xF0, 0xAD, 0x17, 0x2E, 0x5C, 0xB8, 0x3D, 0x7A, + 0xF4, 0xA5, 0x07, 0x0E, 0x1C, 0x38, 0x70, 0xE0, 0x8D, 0x57, 0xAE, 0x11, + 0x22, 0x44, 0x88, 0x5D, 0xBA, 0x39, 0x72, 0xE4, 0x85, 0x47, 0x8E, 0x51, + 0xA2, 0x09, 0x12, 0x24, 0x48, 0x90, 0x6D, 0xDA, 0xF9, 0xBF, 0x33, 0x66, + 0xCC, 0xD5, 0xE7, 0x83, 0x4B, 0x96, 0x61, 0xC2, 0xC9, 0xDF, 0xF3, 0xAB, + 0x1B, 0x36, 0x6C, 0xD8, 0xFD, 0xB7, 0x23, 0x46, 0x8C, 0x55, 0xAA, 0x19, + 0x32, 0x64, 0xC8, 0xDD, 0xF7, 0xA3, 0x0B, 0x16, 0x2C, 0x58, 0xB0, 0x2D, + 0x5A, 0xB4, 0x25, 0x4A, 0x94, 0x65, 0xCA, 0xD9, 0xFF, 0xB3, 0x2B, 0x56, + 0xAC, 0x15, 0x2A, 0x54, 0xA8, 0x1D, 0x3A, 0x74, 0xE8, 0x9D, 0x77, 0xEE, + 0x91, 0x6F, 0xDE, 0xF1, 0xAF, 0x13, 0x26, 0x4C, 0x98, 0x7D, 0xFA, 0xB9, + 0x3F, 0x7E, 0xFC, 0xB5, 0x27, 0x4E, 0x9C, 0x75, 0xEA, 0x99, 0x7F, 0xFE, + 0xB1, 0x2F, 0x5E, 0xBC, 0x35, 0x6A, 0xD4, 0xE5, 0x87, 0x43, 0x86, 0x41, + 0x82, 0x49, 0x92, 0x69, 0xD2, 0xE9, 0x9F, 0x73, 0xE6, 0x81, 0x4F, 0x9E, + 0x71, 0xE2, 0x89, 0x5F, 0xBE, 0x31, 0x62, 0xC4, 0xC5, 0xC7, 0xC3, 0xCB +}; + + +/* The table constants are indices of + * S-box entries, preprocessed through q0 and q1. */ +static byte calc_sb_tbl[512] = { + 0xA9, 0x75, 0x67, 0xF3, 0xB3, 0xC6, 0xE8, 0xF4, + 0x04, 0xDB, 0xFD, 0x7B, 0xA3, 0xFB, 0x76, 0xC8, + 0x9A, 0x4A, 0x92, 0xD3, 0x80, 0xE6, 0x78, 0x6B, + 0xE4, 0x45, 0xDD, 0x7D, 0xD1, 0xE8, 0x38, 0x4B, + 0x0D, 0xD6, 0xC6, 0x32, 0x35, 0xD8, 0x98, 0xFD, + 0x18, 0x37, 0xF7, 0x71, 0xEC, 0xF1, 0x6C, 0xE1, + 0x43, 0x30, 0x75, 0x0F, 0x37, 0xF8, 0x26, 0x1B, + 0xFA, 0x87, 0x13, 0xFA, 0x94, 0x06, 0x48, 0x3F, + 0xF2, 0x5E, 0xD0, 0xBA, 0x8B, 0xAE, 0x30, 0x5B, + 0x84, 0x8A, 0x54, 0x00, 0xDF, 0xBC, 0x23, 0x9D, + 0x19, 0x6D, 0x5B, 0xC1, 0x3D, 0xB1, 0x59, 0x0E, + 0xF3, 0x80, 0xAE, 0x5D, 0xA2, 0xD2, 0x82, 0xD5, + 0x63, 0xA0, 0x01, 0x84, 0x83, 0x07, 0x2E, 0x14, + 0xD9, 0xB5, 0x51, 0x90, 0x9B, 0x2C, 0x7C, 0xA3, + 0xA6, 0xB2, 0xEB, 0x73, 0xA5, 0x4C, 0xBE, 0x54, + 0x16, 0x92, 0x0C, 0x74, 0xE3, 0x36, 0x61, 0x51, + 0xC0, 0x38, 0x8C, 0xB0, 0x3A, 0xBD, 0xF5, 0x5A, + 0x73, 0xFC, 0x2C, 0x60, 0x25, 0x62, 0x0B, 0x96, + 0xBB, 0x6C, 0x4E, 0x42, 0x89, 0xF7, 0x6B, 0x10, + 0x53, 0x7C, 0x6A, 0x28, 0xB4, 0x27, 0xF1, 0x8C, + 0xE1, 0x13, 0xE6, 0x95, 0xBD, 0x9C, 0x45, 0xC7, + 0xE2, 0x24, 0xF4, 0x46, 0xB6, 0x3B, 0x66, 0x70, + 0xCC, 0xCA, 0x95, 0xE3, 0x03, 0x85, 0x56, 0xCB, + 0xD4, 0x11, 0x1C, 0xD0, 0x1E, 0x93, 0xD7, 0xB8, + 0xFB, 0xA6, 0xC3, 0x83, 0x8E, 0x20, 0xB5, 0xFF, + 0xE9, 0x9F, 0xCF, 0x77, 0xBF, 0xC3, 0xBA, 0xCC, + 0xEA, 0x03, 0x77, 0x6F, 0x39, 0x08, 0xAF, 0xBF, + 0x33, 0x40, 0xC9, 0xE7, 0x62, 0x2B, 0x71, 0xE2, + 0x81, 0x79, 0x79, 0x0C, 0x09, 0xAA, 0xAD, 0x82, + 0x24, 0x41, 0xCD, 0x3A, 0xF9, 0xEA, 0xD8, 0xB9, + 0xE5, 0xE4, 0xC5, 0x9A, 0xB9, 0xA4, 0x4D, 0x97, + 0x44, 0x7E, 0x08, 0xDA, 0x86, 0x7A, 0xE7, 0x17, + 0xA1, 0x66, 0x1D, 0x94, 0xAA, 0xA1, 0xED, 0x1D, + 0x06, 0x3D, 0x70, 0xF0, 0xB2, 0xDE, 0xD2, 0xB3, + 0x41, 0x0B, 0x7B, 0x72, 0xA0, 0xA7, 0x11, 0x1C, + 0x31, 0xEF, 0xC2, 0xD1, 0x27, 0x53, 0x90, 0x3E, + 0x20, 0x8F, 0xF6, 0x33, 0x60, 0x26, 0xFF, 0x5F, + 0x96, 0xEC, 0x5C, 0x76, 0xB1, 0x2A, 0xAB, 0x49, + 0x9E, 0x81, 0x9C, 0x88, 0x52, 0xEE, 0x1B, 0x21, + 0x5F, 0xC4, 0x93, 0x1A, 0x0A, 0xEB, 0xEF, 0xD9, + 0x91, 0xC5, 0x85, 0x39, 0x49, 0x99, 0xEE, 0xCD, + 0x2D, 0xAD, 0x4F, 0x31, 0x8F, 0x8B, 0x3B, 0x01, + 0x47, 0x18, 0x87, 0x23, 0x6D, 0xDD, 0x46, 0x1F, + 0xD6, 0x4E, 0x3E, 0x2D, 0x69, 0xF9, 0x64, 0x48, + 0x2A, 0x4F, 0xCE, 0xF2, 0xCB, 0x65, 0x2F, 0x8E, + 0xFC, 0x78, 0x97, 0x5C, 0x05, 0x58, 0x7A, 0x19, + 0xAC, 0x8D, 0x7F, 0xE5, 0xD5, 0x98, 0x1A, 0x57, + 0x4B, 0x67, 0x0E, 0x7F, 0xA7, 0x05, 0x5A, 0x64, + 0x28, 0xAF, 0x14, 0x63, 0x3F, 0xB6, 0x29, 0xFE, + 0x88, 0xF5, 0x3C, 0xB7, 0x4C, 0x3C, 0x02, 0xA5, + 0xB8, 0xCE, 0xDA, 0xE9, 0xB0, 0x68, 0x17, 0x44, + 0x55, 0xE0, 0x1F, 0x4D, 0x8A, 0x43, 0x7D, 0x69, + 0x57, 0x29, 0xC7, 0x2E, 0x8D, 0xAC, 0x74, 0x15, + 0xB7, 0x59, 0xC4, 0xA8, 0x9F, 0x0A, 0x72, 0x9E, + 0x7E, 0x6E, 0x15, 0x47, 0x22, 0xDF, 0x12, 0x34, + 0x58, 0x35, 0x07, 0x6A, 0x99, 0xCF, 0x34, 0xDC, + 0x6E, 0x22, 0x50, 0xC9, 0xDE, 0xC0, 0x68, 0x9B, + 0x65, 0x89, 0xBC, 0xD4, 0xDB, 0xED, 0xF8, 0xAB, + 0xC8, 0x12, 0xA8, 0xA2, 0x2B, 0x0D, 0x40, 0x52, + 0xDC, 0xBB, 0xFE, 0x02, 0x32, 0x2F, 0xA4, 0xA9, + 0xCA, 0xD7, 0x10, 0x61, 0x21, 0x1E, 0xF0, 0xB4, + 0xD3, 0x50, 0x5D, 0x04, 0x0F, 0xF6, 0x00, 0xC2, + 0x6F, 0x16, 0x9D, 0x25, 0x36, 0x86, 0x42, 0x56, + 0x4A, 0x55, 0x5E, 0x09, 0xC1, 0xBE, 0xE0, 0x91 +}; +/* Macro to perform one column of the RS matrix multiplication. The + * parameters a, b, c, and d are the four bytes of output; i is the index + * of the key bytes, and w, x, y, and z, are the column of constants from + * the RS matrix, preprocessed through the poly_to_exp table. */ + +#define CALC_S(a, b, c, d, i, w, x, y, z) \ + if (key[i]) { \ + tmp = poly_to_exp[key[i] - 1]; \ + (a) ^= exp_to_poly[tmp + (w)]; \ + (b) ^= exp_to_poly[tmp + (x)]; \ + (c) ^= exp_to_poly[tmp + (y)]; \ + (d) ^= exp_to_poly[tmp + (z)]; \ + } + +/* Macros to calculate the key-dependent S-boxes for a 128-bit key using + * the S vector from CALC_S. CALC_SB_2 computes a single entry in all + * four S-boxes, where i is the index of the entry to compute, and a and b + * are the index numbers preprocessed through the q0 and q1 tables + * respectively. CALC_SB is simply a convenience to make the code shorter; + * it calls CALC_SB_2 four times with consecutive indices from i to i+3, + * using the remaining parameters two by two. */ + +#define CALC_SB_2(i, a, b) \ + ctx->s[0][i] = mds[0][q0[(a) ^ sa] ^ se]; \ + ctx->s[1][i] = mds[1][q0[(b) ^ sb] ^ sf]; \ + ctx->s[2][i] = mds[2][q1[(a) ^ sc] ^ sg]; \ + ctx->s[3][i] = mds[3][q1[(b) ^ sd] ^ sh] + +#define CALC_SB(i, a, b, c, d, e, f, g, h) \ + CALC_SB_2 (i, a, b); CALC_SB_2 ((i)+1, c, d); \ + CALC_SB_2 ((i)+2, e, f); CALC_SB_2 ((i)+3, g, h) + +/* Macros exactly like CALC_SB and CALC_SB_2, but for 256-bit keys. */ + +#define CALC_SB256_2(i, a, b) \ + ctx->s[0][i] = mds[0][q0[q0[q1[(b) ^ sa] ^ se] ^ si] ^ sm]; \ + ctx->s[1][i] = mds[1][q0[q1[q1[(a) ^ sb] ^ sf] ^ sj] ^ sn]; \ + ctx->s[2][i] = mds[2][q1[q0[q0[(a) ^ sc] ^ sg] ^ sk] ^ so]; \ + ctx->s[3][i] = mds[3][q1[q1[q0[(b) ^ sd] ^ sh] ^ sl] ^ sp]; + +#define CALC_SB256(i, a, b, c, d, e, f, g, h) \ + CALC_SB256_2 (i, a, b); CALC_SB256_2 ((i)+1, c, d); \ + CALC_SB256_2 ((i)+2, e, f); CALC_SB256_2 ((i)+3, g, h) + +/* Macros to calculate the whitening and round subkeys. CALC_K_2 computes the + * last two stages of the h() function for a given index (either 2i or 2i+1). + * a, b, c, and d are the four bytes going into the last two stages. For + * 128-bit keys, this is the entire h() function and a and c are the index + * preprocessed through q0 and q1 respectively; for longer keys they are the + * output of previous stages. j is the index of the first key byte to use. + * CALC_K computes a pair of subkeys for 128-bit Twofish, by calling CALC_K_2 + * twice, doing the Psuedo-Hadamard Transform, and doing the necessary + * rotations. Its parameters are: a, the array to write the results into, + * j, the index of the first output entry, k and l, the preprocessed indices + * for index 2i, and m and n, the preprocessed indices for index 2i+1. + * CALC_K256_2 expands CALC_K_2 to handle 256-bit keys, by doing two + * additional lookup-and-XOR stages. The parameters a and b are the index + * preprocessed through q0 and q1 respectively; j is the index of the first + * key byte to use. CALC_K256 is identical to CALC_K but for using the + * CALC_K256_2 macro instead of CALC_K_2. */ + +#define CALC_K_2(a, b, c, d, j) \ + mds[0][q0[a ^ key[(j) + 8]] ^ key[j]] \ + ^ mds[1][q0[b ^ key[(j) + 9]] ^ key[(j) + 1]] \ + ^ mds[2][q1[c ^ key[(j) + 10]] ^ key[(j) + 2]] \ + ^ mds[3][q1[d ^ key[(j) + 11]] ^ key[(j) + 3]] + +#define CALC_K(a, j, k, l, m, n) \ + x = CALC_K_2 (k, l, k, l, 0); \ + y = CALC_K_2 (m, n, m, n, 4); \ + y = (y << 8) + (y >> 24); \ + x += y; y += x; ctx->a[j] = x; \ + ctx->a[(j) + 1] = (y << 9) + (y >> 23) + +#define CALC_K256_2(a, b, j) \ + CALC_K_2 (q0[q1[b ^ key[(j) + 24]] ^ key[(j) + 16]], \ + q1[q1[a ^ key[(j) + 25]] ^ key[(j) + 17]], \ + q0[q0[a ^ key[(j) + 26]] ^ key[(j) + 18]], \ + q1[q0[b ^ key[(j) + 27]] ^ key[(j) + 19]], j) + +#define CALC_K256(a, j, k, l, m, n) \ + x = CALC_K256_2 (k, l, 0); \ + y = CALC_K256_2 (m, n, 4); \ + y = (y << 8) + (y >> 24); \ + x += y; y += x; ctx->a[j] = x; \ + ctx->a[(j) + 1] = (y << 9) + (y >> 23) + + +static void +burn_stack (int bytes) +{ + char buf[64]; + + memset (buf, 0, sizeof buf); + bytes -= sizeof buf; + if (bytes > 0) + burn_stack (bytes); +} + + + +/* Perform the key setup. Note that this works only with 128- and 256-bit + * keys, despite the API that looks like it might support other sizes. */ + +#ifdef __riscos__ +/* need to switch off CSE optimisation for Norcroft C (Acorn/Pace) */ +#pragma no_optimise_cse +#endif /* __riscos__ */ + +static int +do_twofish_setkey (TWOFISH_context *ctx, const byte *key, unsigned int keylen) +{ + int i, j, k; + + /* Temporaries for CALC_K. */ + u32 x, y; + + /* The S vector used to key the S-boxes, split up into individual bytes. + * 128-bit keys use only sa through sh; 256-bit use all of them. */ + byte sa = 0, sb = 0, sc = 0, sd = 0, se = 0, sf = 0, sg = 0, sh = 0; + byte si = 0, sj = 0, sk = 0, sl = 0, sm = 0, sn = 0, so = 0, sp = 0; + + /* Temporary for CALC_S. */ + byte tmp; + + /* Flags for self-test. */ + static int initialized = 0; + static const char *selftest_failed=0; + + /* Check key length. */ + if( ( ( keylen - 16 ) | 16 ) != 16 ) + return G10ERR_WRONG_KEYLEN; + + /* Do self-test if necessary. */ + if (!initialized) { + initialized = 1; + selftest_failed = selftest (); + if( selftest_failed ) + fprintf(stderr, "%s\n", selftest_failed ); + } + if( selftest_failed ) + return G10ERR_SELFTEST_FAILED; + + /* Compute the first two words of the S vector. The magic numbers are + * the entries of the RS matrix, preprocessed through poly_to_exp. The + * numbers in the comments are the original (polynomial form) matrix + * entries. */ + CALC_S (sa, sb, sc, sd, 0, 0x00, 0x2D, 0x01, 0x2D); /* 01 A4 02 A4 */ + CALC_S (sa, sb, sc, sd, 1, 0x2D, 0xA4, 0x44, 0x8A); /* A4 56 A1 55 */ + CALC_S (sa, sb, sc, sd, 2, 0x8A, 0xD5, 0xBF, 0xD1); /* 55 82 FC 87 */ + CALC_S (sa, sb, sc, sd, 3, 0xD1, 0x7F, 0x3D, 0x99); /* 87 F3 C1 5A */ + CALC_S (sa, sb, sc, sd, 4, 0x99, 0x46, 0x66, 0x96); /* 5A 1E 47 58 */ + CALC_S (sa, sb, sc, sd, 5, 0x96, 0x3C, 0x5B, 0xED); /* 58 C6 AE DB */ + CALC_S (sa, sb, sc, sd, 6, 0xED, 0x37, 0x4F, 0xE0); /* DB 68 3D 9E */ + CALC_S (sa, sb, sc, sd, 7, 0xE0, 0xD0, 0x8C, 0x17); /* 9E E5 19 03 */ + CALC_S (se, sf, sg, sh, 8, 0x00, 0x2D, 0x01, 0x2D); /* 01 A4 02 A4 */ + CALC_S (se, sf, sg, sh, 9, 0x2D, 0xA4, 0x44, 0x8A); /* A4 56 A1 55 */ + CALC_S (se, sf, sg, sh, 10, 0x8A, 0xD5, 0xBF, 0xD1); /* 55 82 FC 87 */ + CALC_S (se, sf, sg, sh, 11, 0xD1, 0x7F, 0x3D, 0x99); /* 87 F3 C1 5A */ + CALC_S (se, sf, sg, sh, 12, 0x99, 0x46, 0x66, 0x96); /* 5A 1E 47 58 */ + CALC_S (se, sf, sg, sh, 13, 0x96, 0x3C, 0x5B, 0xED); /* 58 C6 AE DB */ + CALC_S (se, sf, sg, sh, 14, 0xED, 0x37, 0x4F, 0xE0); /* DB 68 3D 9E */ + CALC_S (se, sf, sg, sh, 15, 0xE0, 0xD0, 0x8C, 0x17); /* 9E E5 19 03 */ + + if (keylen == 32) { /* 256-bit key */ + /* Calculate the remaining two words of the S vector */ + CALC_S (si, sj, sk, sl, 16, 0x00, 0x2D, 0x01, 0x2D); /* 01 A4 02 A4 */ + CALC_S (si, sj, sk, sl, 17, 0x2D, 0xA4, 0x44, 0x8A); /* A4 56 A1 55 */ + CALC_S (si, sj, sk, sl, 18, 0x8A, 0xD5, 0xBF, 0xD1); /* 55 82 FC 87 */ + CALC_S (si, sj, sk, sl, 19, 0xD1, 0x7F, 0x3D, 0x99); /* 87 F3 C1 5A */ + CALC_S (si, sj, sk, sl, 20, 0x99, 0x46, 0x66, 0x96); /* 5A 1E 47 58 */ + CALC_S (si, sj, sk, sl, 21, 0x96, 0x3C, 0x5B, 0xED); /* 58 C6 AE DB */ + CALC_S (si, sj, sk, sl, 22, 0xED, 0x37, 0x4F, 0xE0); /* DB 68 3D 9E */ + CALC_S (si, sj, sk, sl, 23, 0xE0, 0xD0, 0x8C, 0x17); /* 9E E5 19 03 */ + CALC_S (sm, sn, so, sp, 24, 0x00, 0x2D, 0x01, 0x2D); /* 01 A4 02 A4 */ + CALC_S (sm, sn, so, sp, 25, 0x2D, 0xA4, 0x44, 0x8A); /* A4 56 A1 55 */ + CALC_S (sm, sn, so, sp, 26, 0x8A, 0xD5, 0xBF, 0xD1); /* 55 82 FC 87 */ + CALC_S (sm, sn, so, sp, 27, 0xD1, 0x7F, 0x3D, 0x99); /* 87 F3 C1 5A */ + CALC_S (sm, sn, so, sp, 28, 0x99, 0x46, 0x66, 0x96); /* 5A 1E 47 58 */ + CALC_S (sm, sn, so, sp, 29, 0x96, 0x3C, 0x5B, 0xED); /* 58 C6 AE DB */ + CALC_S (sm, sn, so, sp, 30, 0xED, 0x37, 0x4F, 0xE0); /* DB 68 3D 9E */ + CALC_S (sm, sn, so, sp, 31, 0xE0, 0xD0, 0x8C, 0x17); /* 9E E5 19 03 */ + + /* Compute the S-boxes. */ + for(i=j=0,k=1; i < 256; i++, j += 2, k += 2 ) { + CALC_SB256_2( i, calc_sb_tbl[j], calc_sb_tbl[k] ); + } + + /* Calculate whitening and round subkeys. The constants are + * indices of subkeys, preprocessed through q0 and q1. */ + CALC_K256 (w, 0, 0xA9, 0x75, 0x67, 0xF3); + CALC_K256 (w, 2, 0xB3, 0xC6, 0xE8, 0xF4); + CALC_K256 (w, 4, 0x04, 0xDB, 0xFD, 0x7B); + CALC_K256 (w, 6, 0xA3, 0xFB, 0x76, 0xC8); + CALC_K256 (k, 0, 0x9A, 0x4A, 0x92, 0xD3); + CALC_K256 (k, 2, 0x80, 0xE6, 0x78, 0x6B); + CALC_K256 (k, 4, 0xE4, 0x45, 0xDD, 0x7D); + CALC_K256 (k, 6, 0xD1, 0xE8, 0x38, 0x4B); + CALC_K256 (k, 8, 0x0D, 0xD6, 0xC6, 0x32); + CALC_K256 (k, 10, 0x35, 0xD8, 0x98, 0xFD); + CALC_K256 (k, 12, 0x18, 0x37, 0xF7, 0x71); + CALC_K256 (k, 14, 0xEC, 0xF1, 0x6C, 0xE1); + CALC_K256 (k, 16, 0x43, 0x30, 0x75, 0x0F); + CALC_K256 (k, 18, 0x37, 0xF8, 0x26, 0x1B); + CALC_K256 (k, 20, 0xFA, 0x87, 0x13, 0xFA); + CALC_K256 (k, 22, 0x94, 0x06, 0x48, 0x3F); + CALC_K256 (k, 24, 0xF2, 0x5E, 0xD0, 0xBA); + CALC_K256 (k, 26, 0x8B, 0xAE, 0x30, 0x5B); + CALC_K256 (k, 28, 0x84, 0x8A, 0x54, 0x00); + CALC_K256 (k, 30, 0xDF, 0xBC, 0x23, 0x9D); + } + else { + /* Compute the S-boxes. */ + for(i=j=0,k=1; i < 256; i++, j += 2, k += 2 ) { + CALC_SB_2( i, calc_sb_tbl[j], calc_sb_tbl[k] ); + } + + /* Calculate whitening and round subkeys. The constants are + * indices of subkeys, preprocessed through q0 and q1. */ + CALC_K (w, 0, 0xA9, 0x75, 0x67, 0xF3); + CALC_K (w, 2, 0xB3, 0xC6, 0xE8, 0xF4); + CALC_K (w, 4, 0x04, 0xDB, 0xFD, 0x7B); + CALC_K (w, 6, 0xA3, 0xFB, 0x76, 0xC8); + CALC_K (k, 0, 0x9A, 0x4A, 0x92, 0xD3); + CALC_K (k, 2, 0x80, 0xE6, 0x78, 0x6B); + CALC_K (k, 4, 0xE4, 0x45, 0xDD, 0x7D); + CALC_K (k, 6, 0xD1, 0xE8, 0x38, 0x4B); + CALC_K (k, 8, 0x0D, 0xD6, 0xC6, 0x32); + CALC_K (k, 10, 0x35, 0xD8, 0x98, 0xFD); + CALC_K (k, 12, 0x18, 0x37, 0xF7, 0x71); + CALC_K (k, 14, 0xEC, 0xF1, 0x6C, 0xE1); + CALC_K (k, 16, 0x43, 0x30, 0x75, 0x0F); + CALC_K (k, 18, 0x37, 0xF8, 0x26, 0x1B); + CALC_K (k, 20, 0xFA, 0x87, 0x13, 0xFA); + CALC_K (k, 22, 0x94, 0x06, 0x48, 0x3F); + CALC_K (k, 24, 0xF2, 0x5E, 0xD0, 0xBA); + CALC_K (k, 26, 0x8B, 0xAE, 0x30, 0x5B); + CALC_K (k, 28, 0x84, 0x8A, 0x54, 0x00); + CALC_K (k, 30, 0xDF, 0xBC, 0x23, 0x9D); + } + + return 0; +} + +#ifdef __riscos__ +#pragma optimise_cse +#endif /* __riscos__ */ + +static int +twofish_setkey (TWOFISH_context *ctx, const byte *key, unsigned int keylen) +{ + int rc = do_twofish_setkey (ctx, key, keylen); + burn_stack (23+6*sizeof(void*)); + return rc; +} + + + +/* Macros to compute the g() function in the encryption and decryption + * rounds. G1 is the straight g() function; G2 includes the 8-bit + * rotation for the high 32-bit word. */ + +#define G1(a) \ + (ctx->s[0][(a) & 0xFF]) ^ (ctx->s[1][((a) >> 8) & 0xFF]) \ + ^ (ctx->s[2][((a) >> 16) & 0xFF]) ^ (ctx->s[3][(a) >> 24]) + +#define G2(b) \ + (ctx->s[1][(b) & 0xFF]) ^ (ctx->s[2][((b) >> 8) & 0xFF]) \ + ^ (ctx->s[3][((b) >> 16) & 0xFF]) ^ (ctx->s[0][(b) >> 24]) + +/* Encryption and decryption Feistel rounds. Each one calls the two g() + * macros, does the PHT, and performs the XOR and the appropriate bit + * rotations. The parameters are the round number (used to select subkeys), + * and the four 32-bit chunks of the text. */ + +#define ENCROUND(n, a, b, c, d) \ + x = G1 (a); y = G2 (b); \ + x += y; y += x + ctx->k[2 * (n) + 1]; \ + (c) ^= x + ctx->k[2 * (n)]; \ + (c) = ((c) >> 1) + ((c) << 31); \ + (d) = (((d) << 1)+((d) >> 31)) ^ y + +#define DECROUND(n, a, b, c, d) \ + x = G1 (a); y = G2 (b); \ + x += y; y += x; \ + (d) ^= y + ctx->k[2 * (n) + 1]; \ + (d) = ((d) >> 1) + ((d) << 31); \ + (c) = (((c) << 1)+((c) >> 31)); \ + (c) ^= (x + ctx->k[2 * (n)]) + +/* Encryption and decryption cycles; each one is simply two Feistel rounds + * with the 32-bit chunks re-ordered to simulate the "swap" */ + +#define ENCCYCLE(n) \ + ENCROUND (2 * (n), a, b, c, d); \ + ENCROUND (2 * (n) + 1, c, d, a, b) + +#define DECCYCLE(n) \ + DECROUND (2 * (n) + 1, c, d, a, b); \ + DECROUND (2 * (n), a, b, c, d) + +/* Macros to convert the input and output bytes into 32-bit words, + * and simultaneously perform the whitening step. INPACK packs word + * number n into the variable named by x, using whitening subkey number m. + * OUTUNPACK unpacks word number n from the variable named by x, using + * whitening subkey number m. */ + +#define INPACK(n, x, m) \ + x = in[4 * (n)] ^ (in[4 * (n) + 1] << 8) \ + ^ (in[4 * (n) + 2] << 16) ^ (in[4 * (n) + 3] << 24) ^ ctx->w[m] + +#define OUTUNPACK(n, x, m) \ + x ^= ctx->w[m]; \ + out[4 * (n)] = x; out[4 * (n) + 1] = x >> 8; \ + out[4 * (n) + 2] = x >> 16; out[4 * (n) + 3] = x >> 24 + +/* Encrypt one block. in and out may be the same. */ + +#ifdef __riscos__ +/* need to switch off CSE optimisation for Norcroft C (Acorn/Pace) */ +#pragma no_optimise_cse +#endif /* __riscos__ */ + +static void +do_twofish_encrypt (const TWOFISH_context *ctx, byte *out, const byte *in) +{ + /* The four 32-bit chunks of the text. */ + u32 a, b, c, d; + + /* Temporaries used by the round function. */ + u32 x, y; + + /* Input whitening and packing. */ + INPACK (0, a, 0); + INPACK (1, b, 1); + INPACK (2, c, 2); + INPACK (3, d, 3); + + /* Encryption Feistel cycles. */ + ENCCYCLE (0); + ENCCYCLE (1); + ENCCYCLE (2); + ENCCYCLE (3); + ENCCYCLE (4); + ENCCYCLE (5); + ENCCYCLE (6); + ENCCYCLE (7); + + /* Output whitening and unpacking. */ + OUTUNPACK (0, c, 4); + OUTUNPACK (1, d, 5); + OUTUNPACK (2, a, 6); + OUTUNPACK (3, b, 7); +} + +#ifdef __riscos__ +#pragma optimise_cse +#endif /* __riscos__ */ + +static void +twofish_encrypt (const TWOFISH_context *ctx, byte *out, const byte *in) +{ + do_twofish_encrypt (ctx, out, in); + burn_stack (24+3*sizeof (void*)); +} + +/* Decrypt one block. in and out may be the same. */ + +#ifdef __riscos__ +/* need to switch off CSE optimisation for Norcroft C (Acorn/Pace) - bug */ +#pragma no_optimise_cse +#endif /* __riscos__ */ + +static void +do_twofish_decrypt (const TWOFISH_context *ctx, byte *out, const byte *in) +{ + /* The four 32-bit chunks of the text. */ + u32 a, b, c, d; + + /* Temporaries used by the round function. */ + u32 x, y; + + /* Input whitening and packing. */ + INPACK (0, c, 4); + INPACK (1, d, 5); + INPACK (2, a, 6); + INPACK (3, b, 7); + + /* Encryption Feistel cycles. */ + DECCYCLE (7); + DECCYCLE (6); + DECCYCLE (5); + DECCYCLE (4); + DECCYCLE (3); + DECCYCLE (2); + DECCYCLE (1); + DECCYCLE (0); + + /* Output whitening and unpacking. */ + OUTUNPACK (0, a, 0); + OUTUNPACK (1, b, 1); + OUTUNPACK (2, c, 2); + OUTUNPACK (3, d, 3); +} + +#ifdef __riscos__ +#pragma optimise_cse +#endif /* __riscos__ */ + +static void +twofish_decrypt (const TWOFISH_context *ctx, byte *out, const byte *in) +{ + do_twofish_decrypt (ctx, out, in); + burn_stack (24+3*sizeof (void*)); +} + +/* Test a single encryption and decryption with each key size. */ + +static const char* +selftest (void) +{ + TWOFISH_context ctx; /* Expanded key. */ + byte scratch[16]; /* Encryption/decryption result buffer. */ + + /* Test vectors for single encryption/decryption. Note that I am using + * the vectors from the Twofish paper's "known answer test", I=3 for + * 128-bit and I=4 for 256-bit, instead of the all-0 vectors from the + * "intermediate value test", because an all-0 key would trigger all the + * special cases in the RS matrix multiply, leaving the math untested. */ + static const byte plaintext[16] = { + 0xD4, 0x91, 0xDB, 0x16, 0xE7, 0xB1, 0xC3, 0x9E, + 0x86, 0xCB, 0x08, 0x6B, 0x78, 0x9F, 0x54, 0x19 + }; + static const byte key[16] = { + 0x9F, 0x58, 0x9F, 0x5C, 0xF6, 0x12, 0x2C, 0x32, + 0xB6, 0xBF, 0xEC, 0x2F, 0x2A, 0xE8, 0xC3, 0x5A + }; + static const byte ciphertext[16] = { + 0x01, 0x9F, 0x98, 0x09, 0xDE, 0x17, 0x11, 0x85, + 0x8F, 0xAA, 0xC3, 0xA3, 0xBA, 0x20, 0xFB, 0xC3 + }; + static const byte plaintext_256[16] = { + 0x90, 0xAF, 0xE9, 0x1B, 0xB2, 0x88, 0x54, 0x4F, + 0x2C, 0x32, 0xDC, 0x23, 0x9B, 0x26, 0x35, 0xE6 + }; + static const byte key_256[32] = { + 0xD4, 0x3B, 0xB7, 0x55, 0x6E, 0xA3, 0x2E, 0x46, + 0xF2, 0xA2, 0x82, 0xB7, 0xD4, 0x5B, 0x4E, 0x0D, + 0x57, 0xFF, 0x73, 0x9D, 0x4D, 0xC9, 0x2C, 0x1B, + 0xD7, 0xFC, 0x01, 0x70, 0x0C, 0xC8, 0x21, 0x6F + }; + static const byte ciphertext_256[16] = { + 0x6C, 0xB4, 0x56, 0x1C, 0x40, 0xBF, 0x0A, 0x97, + 0x05, 0x93, 0x1C, 0xB6, 0xD4, 0x08, 0xE7, 0xFA + }; + + twofish_setkey (&ctx, key, sizeof(key)); + twofish_encrypt (&ctx, scratch, plaintext); + if (memcmp (scratch, ciphertext, sizeof (ciphertext))) + return "Twofish-128 test encryption failed."; + twofish_decrypt (&ctx, scratch, scratch); + if (memcmp (scratch, plaintext, sizeof (plaintext))) + return "Twofish-128 test decryption failed."; + + twofish_setkey (&ctx, key_256, sizeof(key_256)); + twofish_encrypt (&ctx, scratch, plaintext_256); + if (memcmp (scratch, ciphertext_256, sizeof (ciphertext_256))) + return "Twofish-256 test encryption failed."; + twofish_decrypt (&ctx, scratch, scratch); + if (memcmp (scratch, plaintext_256, sizeof (plaintext_256))) + return "Twofish-256 test decryption failed."; + + return NULL; +} + +/* More complete test program. This does 1000 encryptions and decryptions + * with each of 250 128-bit keys and 2000 encryptions and decryptions with + * each of 125 256-bit keys, using a feedback scheme similar to a Feistel + * cipher, so as to be sure of testing all the table entries pretty + * thoroughly. We keep changing the keys so as to get a more meaningful + * performance number, since the key setup is non-trivial for Twofish. */ + +#ifdef TEST + +#include <stdio.h> +#include <string.h> +#include <time.h> + +int +main() +{ + TWOFISH_context ctx; /* Expanded key. */ + int i, j; /* Loop counters. */ + + const char *encrypt_msg; /* Message to print regarding encryption test; + * the printf is done outside the loop to avoid + * stuffing up the timing. */ + clock_t timer; /* For computing elapsed time. */ + + /* Test buffer. */ + byte buffer[4][16] = { + {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, + 0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF}, + {0x0F, 0x1E, 0x2D, 0x3C, 0x4B, 0x5A, 0x69, 0x78, + 0x87, 0x96, 0xA5, 0xB4, 0xC3, 0xD2 ,0xE1, 0xF0}, + {0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, + 0xFE, 0xDC, 0xBA, 0x98, 0x76, 0x54 ,0x32, 0x10}, + {0x01, 0x23, 0x45, 0x67, 0x76, 0x54 ,0x32, 0x10, + 0x89, 0xAB, 0xCD, 0xEF, 0xFE, 0xDC, 0xBA, 0x98} + }; + + /* Expected outputs for the million-operation test */ + static const byte test_encrypt[4][16] = { + {0xC8, 0x23, 0xB8, 0xB7, 0x6B, 0xFE, 0x91, 0x13, + 0x2F, 0xA7, 0x5E, 0xE6, 0x94, 0x77, 0x6F, 0x6B}, + {0x90, 0x36, 0xD8, 0x29, 0xD5, 0x96, 0xC2, 0x8E, + 0xE4, 0xFF, 0x76, 0xBC, 0xE5, 0x77, 0x88, 0x27}, + {0xB8, 0x78, 0x69, 0xAF, 0x42, 0x8B, 0x48, 0x64, + 0xF7, 0xE9, 0xF3, 0x9C, 0x42, 0x18, 0x7B, 0x73}, + {0x7A, 0x88, 0xFB, 0xEB, 0x90, 0xA4, 0xB4, 0xA8, + 0x43, 0xA3, 0x1D, 0xF1, 0x26, 0xC4, 0x53, 0x57} + }; + static const byte test_decrypt[4][16] = { + {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, + 0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF}, + {0x0F, 0x1E, 0x2D, 0x3C, 0x4B, 0x5A, 0x69, 0x78, + 0x87, 0x96, 0xA5, 0xB4, 0xC3, 0xD2 ,0xE1, 0xF0}, + {0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, + 0xFE, 0xDC, 0xBA, 0x98, 0x76, 0x54 ,0x32, 0x10}, + {0x01, 0x23, 0x45, 0x67, 0x76, 0x54 ,0x32, 0x10, + 0x89, 0xAB, 0xCD, 0xEF, 0xFE, 0xDC, 0xBA, 0x98} + }; + + /* Start the timer ticking. */ + timer = clock (); + + /* Encryption test. */ + for (i = 0; i < 125; i++) { + twofish_setkey (&ctx, buffer[0], sizeof (buffer[0])); + for (j = 0; j < 1000; j++) + twofish_encrypt (&ctx, buffer[2], buffer[2]); + twofish_setkey (&ctx, buffer[1], sizeof (buffer[1])); + for (j = 0; j < 1000; j++) + twofish_encrypt (&ctx, buffer[3], buffer[3]); + twofish_setkey (&ctx, buffer[2], sizeof (buffer[2])*2); + for (j = 0; j < 1000; j++) { + twofish_encrypt (&ctx, buffer[0], buffer[0]); + twofish_encrypt (&ctx, buffer[1], buffer[1]); + } + } + encrypt_msg = memcmp (buffer, test_encrypt, sizeof (test_encrypt)) ? + "encryption failure!\n" : "encryption OK!\n"; + + /* Decryption test. */ + for (i = 0; i < 125; i++) { + twofish_setkey (&ctx, buffer[2], sizeof (buffer[2])*2); + for (j = 0; j < 1000; j++) { + twofish_decrypt (&ctx, buffer[0], buffer[0]); + twofish_decrypt (&ctx, buffer[1], buffer[1]); + } + twofish_setkey (&ctx, buffer[1], sizeof (buffer[1])); + for (j = 0; j < 1000; j++) + twofish_decrypt (&ctx, buffer[3], buffer[3]); + twofish_setkey (&ctx, buffer[0], sizeof (buffer[0])); + for (j = 0; j < 1000; j++) + twofish_decrypt (&ctx, buffer[2], buffer[2]); + } + + /* Stop the timer, and print results. */ + timer = clock () - timer; + printf (encrypt_msg); + printf (memcmp (buffer, test_decrypt, sizeof (test_decrypt)) ? + "decryption failure!\n" : "decryption OK!\n"); + printf ("elapsed time: %.1f s.\n", (float) timer / CLOCKS_PER_SEC); + + return 0; +} + +#endif /* TEST */ + +#ifdef IS_MODULE +static +#endif + const char * +twofish_get_info (int algo, size_t *keylen, + size_t *blocksize, size_t *contextsize, + int (**r_setkey) (void *c, byte *key, unsigned keylen), + void (**r_encrypt) (void *c, byte *outbuf, byte *inbuf), + void (**r_decrypt) (void *c, byte *outbuf, byte *inbuf) + ) +{ + *keylen = algo==10? 256 : 128; + *blocksize = 16; + *contextsize = sizeof (TWOFISH_context); + + *(int (**)(TWOFISH_context*, const byte*, const unsigned))r_setkey + = twofish_setkey; + *(void (**)(const TWOFISH_context*, byte*, const byte*))r_encrypt + = twofish_encrypt; + *(void (**)(const TWOFISH_context*, byte*, const byte*))r_decrypt + = twofish_decrypt; + + if( algo == 10 ) + return "TWOFISH"; + if (algo == 102) /* This algorithm number is assigned for + * experiments, so we can use it */ + return "TWOFISH128"; + return NULL; +} + + +#ifdef IS_MODULE +static +const char * const gnupgext_version = "TWOFISH ($Revision$)"; + +static struct { + int class; + int version; + int value; + void (*func)(void); +} func_table[] = { + { 20, 1, 0, (void(*)(void))twofish_get_info }, + { 21, 1, 10 }, + { 21, 1, 102 }, +}; + + + +/**************** + * Enumerate the names of the functions together with information about + * this function. Set sequence to an integer with a initial value of 0 and + * do not change it. + * If what is 0 all kind of functions are returned. + * Return values: class := class of function: + * 10 = message digest algorithm info function + * 11 = integer with available md algorithms + * 20 = cipher algorithm info function + * 21 = integer with available cipher algorithms + * 30 = public key algorithm info function + * 31 = integer with available pubkey algorithms + * version = interface version of the function/pointer + * (currently this is 1 for all functions) + */ +static void * +gnupgext_enum_func ( int what, int *sequence, int *class, int *vers ) +{ + void *ret; + int i = *sequence; + + do { + if ( i >= DIM(func_table) || i < 0 ) { + return NULL; + } + *class = func_table[i].class; + *vers = func_table[i].version; + switch( *class ) { + case 11: + case 21: + case 31: + ret = &func_table[i].value; + break; + default: +#ifndef __riscos__ + ret = func_table[i].func; +#else /* __riscos__ */ + ret = (void *) func_table[i].func; +#endif /* __riscos__ */ + break; + } + i++; + } while ( what && what != *class ); + + *sequence = i; + return ret; +} +#endif |