nearly ready for 0.3.0

52 files changed, 1335 insertions, 312 deletions

diff --git a/ChangeLog b/ChangeLog
index 5db61423e..d4b01c746 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Thu Jun 25 11:18:49 1998  Werner Koch  (wk@isil.d.shuttle.de)
+
+	* configure.in (--disable-dynload): New.
+
 Wed Jun 10 07:48:59 1998  Werner Koch,mobil,,,	(wk@tobold)
 
 	* configure.in (GNUPG_LIBDIR): New.
diff --git a/INSTALL b/INSTALL
index 4950ba940..23fa6b98b 100644
--- a/INSTALL
+++ b/INSTALL
@@ -25,12 +25,16 @@ Configure options for GNUPG
 		    side-effect, this removes all debugging code and uses
 		    the -O2 flag for all C files.
 
+--disable-dynload   If you have problems with dynamic loading, this option
+		    disables all dynamic loading stuff.
+
+
 
 Problems
 ========
 
-If you have compile problems, try the configure options "--with-included-zlib"
-or "--disable-nls" (See ABOUT-NLS).
+If you have compile problems, try the configure options "--with-included-zlib",
+"--disable-nls" (See ABOUT-NLS) or --disable-dynload.
 
 I can't check all assembler files, so if you have problems assembling them
 (or the program crashes), simply delete the files in the mpi/<cpu> directory.
diff --git a/NEWS b/NEWS
index 01e875110..b942af624 100644
--- a/NEWS
+++ b/NEWS
@@ -1,11 +1,28 @@
 Noteworthy changes in version 0.3.0
 -----------------------------------
+
     * New option --emulate-checksum-bug.  If your passphrase does not
       work anymore, use this option and --change-passphrase to rewrite
       your passphrase.
 
+    * More complete v4 key support: Preferences and expiration time
+      is set into the self signature.
+
+    * Key generation defaults to DSA/ElGamal keys, so that new keys are
+      interoperable with pgp5
+
+    * DSA key generation is faster and key generation does not anymore
+      remove entropy from the random generator (the primes are public
+      parameters, so there is really no need for a cryptographic secure
+      prime number generator which we had used).
+
+    * A complete new structure for representing the key parameters.
+
+    * Removed most public key knowledge into the cipher libray.
 
+    * Support for dynamic loading of new algorithms.
 
+    * Moved tiger to an extension module.
 
 
 Noteworthy changes in version 0.2.19
diff --git a/TODO b/TODO
index d9f61722a..5be913000 100644
--- a/TODO
+++ b/TODO
@@ -1,12 +1,13 @@
 
+    * make preferences work
+
+    * rewrite --list-packets or put it into another tool.
+
     * add field to PKT_user_id to hold the hash context
 
     * add usage arguments to get_key_byname or return a PKC_LIST with
       all keys and add a selection.
 
-    * add expiration date and other stuff from v4 sigs to the trust
-      checking.
-
     * add readline support. Must enhance libreadline - Anyone?
 
     * Burn the buffers used by fopen(), or use read(2).
@@ -21,7 +22,6 @@
     * add checking of armor trailers
     * remove all "Fixmes"
 
-
     * bug: g10/trustdb.c#build_sigrecs called to often by do_list_path
       and remove the bad kludge. Maybe we should put all sigs into the trustdb
       and mark them as valid/invalid/nopubkey, and how do we check, that
@@ -29,11 +29,6 @@
       record, as it does not belong to the pubkey record?
 
     * add an option to create a new user id.
-      Make it possible to change the signature class of the self-signatures,
-      which can then be used to change the displayed order of user-ids:
-      Put the user-id with a self-signature of class 0x13 always on top
-      of the displayed list (needs changes in the user-id-from-keyid
-      functions).
 
     * add an option to re-create a public key from a secret key. Think about
       a backup system of only the secret part of the secret key.
diff --git a/VERSION b/VERSION
index 598394464..159cf9874 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.2.19b
+0.2.19d
diff --git a/checks/Makefile.am b/checks/Makefile.am
index 654922bdc..8787bc032 100644
--- a/checks/Makefile.am
+++ b/checks/Makefile.am
@@ -25,7 +25,7 @@ check: prepared.stamp
 
 prepared.stamp: pubring.gpg secring.gpg gnupg.sig plain-3 \
 		pubring.pkr secring.skr $(DATA_FILES)
-	@echo "def" | ../g10/gpg -v --no-operation; \
+	@echo "def" | ../g10/gpg --homedir . -v --no-operation; \
 	 echo timestamp >./prepared.stamp
 
 pubring.gpg: pubring.asc
diff --git a/checks/defs.inc b/checks/defs.inc
index dbd6e33b6..78954426f 100755
--- a/checks/defs.inc
+++ b/checks/defs.inc
@@ -70,7 +70,7 @@ pgmname=$(basename $0)
 cat <<EOF  >./options
 no-greeting
 no-secmem-warning
-load-extension ../cipher/tiger.so
+load-extension ../cipher/tiger
 batch
 EOF
 
diff --git a/cipher/ChangeLog b/cipher/ChangeLog
index 354206462..92ca470da 100644
--- a/cipher/ChangeLog
+++ b/cipher/ChangeLog
@@ -1,6 +1,14 @@
+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 dis, will reappear as dynload module
+	* tiger.c: Removed from dist, will reappear as dynload module
 
 Sat Jun 13 14:16:57 1998  Werner Koch  (wk@isil.d.shuttle.de)
 
diff --git a/cipher/Makefile.am b/cipher/Makefile.am
index d0c0202c9..f01bb7844 100644
--- a/cipher/Makefile.am
+++ b/cipher/Makefile.am
@@ -1,9 +1,15 @@
 ## Process this file with automake to produce Makefile.in
 
+gnupg_extensions = tiger
+
 INCLUDES =  -I$(top_srcdir)/include -I$(top_srcdir)/intl -I../intl
 
-EXTRA_DIST = tiger.c
 noinst_LIBRARIES = libcipher.a
+if ENABLE_GNUPG_EXTENSIONS
+pkglib_PROGRAMS  = $(gnupg_extensions)
+else
+pkglib_PROGRAMS  =
+endif
 
 
 libcipher_a_SOURCES = cipher.c	\
@@ -18,6 +24,7 @@ libcipher_a_SOURCES = cipher.c	\
 		 elgamal.c	\
 		 elgamal.h	\
 		 md5.c		\
+		 md5.h		\
 		 primegen.c	\
 		 random.h	\
 		 random.c	\
@@ -34,4 +41,16 @@ libcipher_a_SOURCES = cipher.c	\
 		 g10c.c 	\
 		 smallprime.c
 
+EXTRA_tiger_SOURCES = tiger.c
+
+tiger: tiger.c
+	$(COMPILE) -shared -fPIC -o tiger tiger.c
+
+install-exec-hook:
+	@list='$(pkglib_PROGRAMS)'; for p in $$list; do \
+	  if test -f $(pkglibdir)/$$p; then \
+	    echo "chmod 644 $(pkglibdir)/$$p"; \
+	    chmod 644 $(pkglibdir)/$$p; \
+	  fi; \
+	done
 
diff --git a/cipher/blowfish.c b/cipher/blowfish.c
index 65a408ef8..3ed2ed858 100644
--- a/cipher/blowfish.c
+++ b/cipher/blowfish.c
@@ -55,7 +55,7 @@ typedef struct {
     u32 p[BLOWFISH_ROUNDS+2];
 } BLOWFISH_context;
 
-static void setkey( BLOWFISH_context *c, byte *key, unsigned keylen );
+static void 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 );
 
@@ -461,7 +461,7 @@ selftest()
     byte key3[] = { 0x41, 0x79, 0x6E, 0xA0, 0x52, 0x61, 0x6E, 0xE4 };
     byte cipher3[] = { 0xE1, 0x13, 0xF4, 0x10, 0x2C, 0xFC, 0xCE, 0x43 };
 
-    setkey( &c, "abcdefghijklmnopqrstuvwxyz", 26 );
+    bf_setkey( &c, "abcdefghijklmnopqrstuvwxyz", 26 );
     encrypt_block( &c, buffer, plain );
     if( memcmp( buffer, "\x32\x4E\xD0\xFE\xF4\x13\xA2\x03", 8 ) )
 	log_error("wrong blowfish encryption\n");
@@ -469,7 +469,7 @@ selftest()
     if( memcmp( buffer, plain, 8 ) )
 	log_bug("blowfish failed\n");
 
-    setkey( &c, key3, 8 );
+    bf_setkey( &c, key3, 8 );
     encrypt_block( &c, buffer, plain3 );
     if( memcmp( buffer, cipher3, 8 ) )
 	log_error("wrong blowfish encryption (3)\n");
@@ -481,7 +481,7 @@ selftest()
 
 
 static void
-setkey( BLOWFISH_context *c, byte *key, unsigned keylen )
+bf_setkey( BLOWFISH_context *c, byte *key, unsigned keylen )
 {
     int i, j;
     u32 data, datal, datar;
@@ -563,7 +563,7 @@ blowfish_get_info( int algo, size_t *keylen,
     *keylen = algo == CIPHER_ALGO_BLOWFISH ? 128 : 160;
     *blocksize = BLOWFISH_BLOCKSIZE;
     *contextsize = sizeof(BLOWFISH_context);
-    *r_setkey = FNCCAST_SETKEY(setkey);
+    *r_setkey = FNCCAST_SETKEY(bf_setkey);
     *r_encrypt= FNCCAST_CRYPT(encrypt_block);
     *r_decrypt= FNCCAST_CRYPT(decrypt_block);
 
diff --git a/cipher/cast5.c b/cipher/cast5.c
index 0bd90f9df..6b2e5a969 100644
--- a/cipher/cast5.c
+++ b/cipher/cast5.c
@@ -57,7 +57,7 @@ typedef struct {
     byte Kr[16];
 } CAST5_context;
 
-static void setkey( CAST5_context *c, byte *key, unsigned keylen );
+static void 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 );
 
@@ -465,7 +465,7 @@ selftest()
     byte cipher[8]= { 0x23, 0x8B, 0x4F, 0xE5, 0x84, 0x7E, 0x44, 0xB2 };
     byte buffer[8];
 
-    setkey( &c, key, 16 );
+    cast_setkey( &c, key, 16 );
     encrypt_block( &c, buffer, plain );
     if( memcmp( buffer, cipher, 8 ) )
 	log_error("wrong cast5-128 encryption\n");
@@ -486,10 +486,10 @@ selftest()
 			0x80,0xAC,0x05,0xB8,0xE8,0x3D,0x69,0x6E };
 
 	for(i=0; i < 1000000; i++ ) {
-	    setkey( &c, b0, 16 );
+	    cast_setkey( &c, b0, 16 );
 	    encrypt_block( &c, a0, a0 );
 	    encrypt_block( &c, a0+8, a0+8 );
-	    setkey( &c, a0, 16 );
+	    cast_setkey( &c, a0, 16 );
 	    encrypt_block( &c, b0, b0 );
 	    encrypt_block( &c, b0+8, b0+8 );
 	}
@@ -550,7 +550,7 @@ key_schedule( u32 *x, u32 *z, u32 *k )
 
 
 static void
-setkey( CAST5_context *c, byte *key, unsigned keylen )
+cast_setkey( CAST5_context *c, byte *key, unsigned keylen )
 {
   static int initialized;
     int i;
@@ -602,7 +602,7 @@ cast5_get_info( int algo, size_t *keylen,
     *keylen = 128;
     *blocksize = CAST5_BLOCKSIZE;
     *contextsize = sizeof(CAST5_context);
-    *r_setkey = FNCCAST_SETKEY(setkey);
+    *r_setkey = FNCCAST_SETKEY(cast_setkey);
     *r_encrypt= FNCCAST_CRYPT(encrypt_block);
     *r_decrypt= FNCCAST_CRYPT(decrypt_block);
 
diff --git a/cipher/dsa.c b/cipher/dsa.c
index 19a59d909..46484c1e9 100644
--- a/cipher/dsa.c
+++ b/cipher/dsa.c
@@ -150,7 +150,7 @@ generate( DSA_secret_key *sk, unsigned nbits, MPI **ret_factors )
      * is the secret part. */
     if( DBG_CIPHER )
 	log_debug("choosing a random x ");
-    assert( qbits >= 16 );
+    assert( qbits >= 160 );
     x = mpi_alloc_secure( mpi_get_nlimbs(q) );
     mpi_sub_ui( h, q, 1 );  /* put q-1 into h */
     rndbuf = NULL;
diff --git a/cipher/dynload.c b/cipher/dynload.c
index 767372a7e..e22731702 100644
--- a/cipher/dynload.c
+++ b/cipher/dynload.c
@@ -34,6 +34,7 @@ typedef struct ext_list {
     void *handle; /* handle from dlopen() */
     int  failed;  /* already tried but failed */
     void * (*enumfunc)(int, int*, int*, int*);
+    char *hintstr; /* pointer into name */
     char name[1];
 } *EXTLIST;
 
@@ -48,12 +49,19 @@ typedef struct {
 
 /****************
  * Register an extension module.  The last registered module will
- * be loaded first.
+ * 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.
  */
 void
 register_cipher_extension( const char *fname )
 {
     EXTLIST r, el;
+    char *p, *pe;
 
     if( *fname != '/' ) { /* do tilde expansion etc */
 	char *p ;
@@ -70,6 +78,14 @@ register_cipher_extension( const char *fname )
 	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 */
     for(r = extensions; r; r = r->next )
 	if( !compare_filenames(r->name, el->name) ) {
@@ -77,8 +93,6 @@ register_cipher_extension( const char *fname )
 	    m_free(el);
 	    return;
 	}
-    if( DBG_CIPHER )
-	log_debug("extension '%s' registered\n", el->name );
     /* and register */
     el->next = extensions;
     extensions = el;
@@ -95,6 +109,7 @@ load_extension( EXTLIST el )
     int seq = 0;
     int class, vers;
 
+
     el->handle = dlopen(el->name, RTLD_NOW);
     if( !el->handle ) {
 	log_error("%s: error loading extension: %s\n", el->name, dlerror() );
@@ -107,7 +122,10 @@ load_extension( EXTLIST el )
     }
 
     if( g10_opt_verbose )
-	log_info("%s: version '%s'\n", el->name, *name );
+	log_info("%s: %s%s%s%s\n", el->name, *name,
+		  el->hintstr? " (":"",
+		  el->hintstr? el->hintstr:"",
+		  el->hintstr? ")":"");
 
     sym = dlsym(el->handle, "gnupgext_enum_func");
     if( (err=dlerror()) ) {
diff --git a/cipher/md.c b/cipher/md.c
index 3fd7581d7..56f639cfd 100644
--- a/cipher/md.c
+++ b/cipher/md.c
@@ -314,8 +314,9 @@ md_final(MD_HANDLE a)
     if( a->bufcount )
 	md_write( a, NULL, 0 );
 
-    for(r=a->list; r; r = r->next )
+    for(r=a->list; r; r = r->next ) {
 	(*r->final)( &r->context );
+    }
 }
 
 
diff --git a/cipher/rand-unix.c b/cipher/rand-unix.c
index 93afba13a..855b23b8e 100644
--- a/cipher/rand-unix.c
+++ b/cipher/rand-unix.c
@@ -129,23 +129,11 @@ read_random_source( byte *buffer, size_t length, int level )
 	    fd_random = open_device( "/dev/random", 8 );
 	fd = fd_random;
     }
-    else if( level == 1 ) {
-	if( fd_urandom == -1 )
-	    fd_urandom = open_device( "/dev/urandom", 9 );
-	fd = fd_urandom;
-    }
     else {
-	/* This is level 0, which only yields simple random bytes.
-	 * We do not use /dev/urandom as this would remove entropy
-	 * from the kernel entropy pool */
-       /* FIXME !!!! */
-
 	if( fd_urandom == -1 )
 	    fd_urandom = open_device( "/dev/urandom", 9 );
 	fd = fd_urandom;
     }
-
-
     do {
 	fd_set rfds;
 	struct timeval tv;
diff --git a/cipher/random.c b/cipher/random.c
index ea6b90806..f44e4c3af 100644
--- a/cipher/random.c
+++ b/cipher/random.c
@@ -211,10 +211,6 @@ read_pool( byte *buffer, size_t length, int level )
 
     if( length >= POOLSIZE )
 	BUG(); /* not allowed */
-    if( !level ) { /* read simple random bytes */
-	read_random_source( buffer, length, level );
-	return;
-    }
 
     /* for level 2 make sure that there is enough random in the pool */
     if( level == 2 && pool_balance < length ) {
@@ -236,33 +232,45 @@ read_pool( byte *buffer, size_t length, int level )
     /* make sure the pool is filled */
     while( !pool_filled )
 	random_poll();
+
     /* do always a fast random poll */
     fast_random_poll();
 
-    /* mix the pool (if add_randomness() didn't it) */
-    if( !just_mixed )
+    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);
-
-    /* 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);
-    mix_pool(keypool);
-    /* 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--;
+	mix_pool(keypool);
+	memcpy( buffer, keypool, length );
+    }
+    else {
+	/* mix the pool (if add_randomness() didn't it) */
+	if( !just_mixed )
+	    mix_pool(rndpool);
+	/* 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);
+	mix_pool(keypool);
+	/* 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 );
     }
-    if( pool_balance < 0 )
-	pool_balance = 0;
-    /* and clear the keypool */
-    memset( keypool, 0, POOLSIZE );
 }
 
 
diff --git a/configure.in b/configure.in
index 37e0bc6b0..005a1b5fb 100644
--- a/configure.in
+++ b/configure.in
@@ -31,6 +31,10 @@ AC_ARG_ENABLE(dev-random,
 [  --disable-dev-random    disable the use of dev random],
     try_dev_random=$enableval, try_dev_random=yes)
 
+AC_ARG_ENABLE(dynload,
+[  --disable-dynload	   disable dynamic loading],
+    try_dynload=$enableval, try_dynload=yes)
+
 AC_MSG_CHECKING([whether memory debugging is requested])
 AC_ARG_ENABLE(m-debug,
 [  --enable-m-debug	   enable debugging of memory allocation],
@@ -114,18 +118,32 @@ AC_DEFINE_UNQUOTED(PRINTABLE_OS_NAME, "$PRINTABLE_OS_NAME")
 
 dnl Checks for libraries.
 
+
+if test "$try_dynload" = yes ; then
 AC_CHECK_LIB(dl,dlopen)
 if test "$ac_cv_lib_dl_dlopen" = "yes"; then
   AC_DEFINE(USE_DYNAMIC_LINKING)
   AC_DEFINE(HAVE_DL_DLOPEN)
+  DYNLINK_LDFLAGS=-rdynamic
+  use_gnupg_extensions=yes
 else
 AC_CHECK_LIB(dld,dld_link)
 if test "$ac_cv_lib_dld_dld_link" = "yes"; then
   AC_DEFINE(USE_DYNAMIC_LINKING)
   AC_DEFINE(HAVE_DLD_DLD_LINK)
+  DYNLINK_LDFLAGS=-rdynamic
+  use_gnupg_extensions=yes
 fi
 fi
+else
+  AC_MSG_CHECKING(for dynamic loading)
+  DYNLINK_LDFLAGS=
+  use_gnupg_extensions=no
+  AC_MSG_RESULT(has been disabled)
+fi
 
+AM_CONDITIONAL(ENABLE_GNUPG_EXTENSIONS, test "$use_gnupg_extensions" = yes )
+AC_SUBST(DYNLINK_LDFLAGS)
 
 dnl Checks for header files.
 AC_HEADER_STDC
diff --git a/doc/gpg.1pod b/doc/gpg.1pod
index e5d51c62c..9fe18c5ec 100644
--- a/doc/gpg.1pod
+++ b/doc/gpg.1pod
@@ -215,6 +215,11 @@ B<--no-options>
     Shortcut for B<--options> I</dev/null>.  This option is
     detected before an attempt to open an option file.
 
+B<--load-extension> I<modulename>
+    Load an extension module. If I<modulename> does not
+    contain a slash it is searched in B</usr/local/lib/gnupg>
+    See the manual for more information about extensions.
+
 B<--debug> I<flags>
     Set debugging flags. All flags are or-ed and I<flags> may
     be given in C syntax (e.g. 0x0042).
@@ -335,8 +340,11 @@ gpgm(1)  gpgd(1)
 
 =head1 WARNINGS
 
-Use a B<good> password for your user account and a non-simple passphrase
-to protect your secret key.
+Use a B<good> password for your user account and a B<good> passphrase
+to protect your secret key.  This passphrase is the weakest part of the
+whole system.  Programs to do dictionary attacks on your secret keyring
+are very easy to write and so you should protect your B<~/.gnupg/>
+directory very good.
 
 Keep in mind that, if this program is used over a network (telnet), it
 is B<very> easy to spy out your passphrase!
diff --git a/g10/ChangeLog b/g10/ChangeLog
index 15fd2c81b..1e110efe4 100644
--- a/g10/ChangeLog
+++ b/g10/ChangeLog
@@ -1,3 +1,20 @@
+Wed Jun 24 16:40:22 1998  Werner Koch  (wk@isil.d.shuttle.de)
+
+	* armor.c (armor_filter): Now creates valid onepass_sig packets
+	with all detected hash algorithms.
+	* mainproc.c (proc_plaintext): Now uses the hash algos as specified
+	in the onepass_sig packets (if there are any)
+
+Mon Jun 22 11:54:08 1998  Werner Koch  (wk@isil.d.shuttle.de)
+
+	* plaintext.c (handle_plaintext): add arg to disable outout
+	* mainproc.c (proc_plaintext): disable output when in sigs_only mode.
+
+Thu Jun 18 13:17:27 1998  Werner Koch  (wk@isil.d.shuttle.de)
+
+	* keygen.c: Removed all rsa packet stuff, chnaged defaults
+	for key generation.
+
 Sun Jun 14 21:28:31 1998  Werner Koch  (wk@isil.d.shuttle.de)
 
 	* misc.c (checksum_u16): Fixed a stupid bug which caused a
diff --git a/g10/Makefile.am b/g10/Makefile.am
index 520a945a8..579ec6075 100644
--- a/g10/Makefile.am
+++ b/g10/Makefile.am
@@ -3,7 +3,7 @@
 INCLUDES = -I$(top_srcdir)/include -I$(top_srcdir)/intl -I../intl
 EXTRA_DIST = OPTIONS  pubring.asc
 OMIT_DEPENDENCIES = zlib.h zconf.h
-LDFLAGS = -rdynamic
+LDFLAGS = @LDFLAGS@ @DYNLINK_LDFLAGS@
 needed_libs = ../cipher/libcipher.a ../mpi/libmpi.a ../util/libutil.a
 
 noinst_PROGRAMS = gpgd
diff --git a/g10/armor.c b/g10/armor.c
index 49352a1eb..541ba3e76 100644
--- a/g10/armor.c
+++ b/g10/armor.c
@@ -100,8 +100,10 @@ static char *tail_strings[] = {
 };
 
 
-static fhdr_state_t find_header( fhdr_state_t state, byte *buf,
-		     size_t *r_buflen, IOBUF a, size_t n, unsigned *r_empty);
+static fhdr_state_t find_header( fhdr_state_t state,
+				 byte *buf, size_t *r_buflen,
+				 IOBUF a, size_t n,
+				 unsigned *r_empty, int *r_hashes );
 
 
 static void
@@ -227,7 +229,7 @@ parse_hash_header( const char *line )
 	    found |= 2;
 	else if( !strncmp( s, "MD5", s2-s ) )
 	    found |= 4;
-	else if( !strncmp( s, "MD2", s2-s ) )
+	else if( !strncmp( s, "TIGER", s2-s ) )
 	    found |= 8;
 	else
 	    return 0;
@@ -250,7 +252,7 @@ parse_hash_header( const char *line )
  */
 static fhdr_state_t
 find_header( fhdr_state_t state, byte *buf, size_t *r_buflen,
-					IOBUF a, size_t n, unsigned *r_empty)
+	     IOBUF a, size_t n, unsigned *r_empty, int *r_hashes )
 {
     int c=0, i;
     const char *s;
@@ -319,6 +321,7 @@ find_header( fhdr_state_t state, byte *buf, size_t *r_buflen,
 	    if( n < buflen || c == '\n' ) {
 		if( n && buf[0] != '\r') { /* maybe a header */
 		    if( strchr( buf, ':') ) { /* yes */
+			int hashes;
 			if( buf[n-1] == '\r' )
 			    buf[--n] = 0;
 			if( opt.verbose ) {
@@ -326,12 +329,15 @@ find_header( fhdr_state_t state, byte *buf, size_t *r_buflen,
 			    print_string( stderr, buf, n, 0 );
 			    putc('\n', stderr);
 			}
-			if( clearsig && !parse_hash_header( buf ) ) {
+			if( clearsig && !(hashes=parse_hash_header( buf )) ) {
 			    log_error("invalid clearsig header\n");
 			    state = fhdrERROR;
 			}
-			else
+			else {
 			    state = fhdrWAITHeader;
+			    if( r_hashes )
+				*r_hashes |= hashes;
+			}
 		    }
 		    else
 			state = fhdrCHECKDashEscaped3;
@@ -602,7 +608,8 @@ check_input( armor_filter_context_t *afx, IOBUF a )
 	state = fhdrHASArmor;
 
     n = DIM(afx->helpbuf);
-    state = find_header( state, afx->helpbuf, &n, a, afx->helplen, &emplines);
+    state = find_header( state, afx->helpbuf, &n, a,
+				afx->helplen, &emplines, &afx->hashes);
     switch( state ) {
       case fhdrNOArmor:
 	afx->inp_checked = 1;
@@ -684,7 +691,8 @@ fake_packet( armor_filter_context_t *afx, IOBUF a,
 	/* read a new one */
 	n = DIM(afx->helpbuf);
 	afx->helpidx = 0;
-	state = find_header( state, afx->helpbuf, &n, a, 0, &emplines );
+	state = find_header( state, afx->helpbuf, &n, a, 0,
+						&emplines, &afx->hashes );
 	switch( state) {
 	  case fhdrERROR:
 	    invalid_armor();
@@ -884,7 +892,7 @@ armor_filter( void *opaque, int control,
 	*ret_len = n;
     }
     else if( control == IOBUFCTRL_UNDERFLOW ) {
-	if( size < 30 )
+	if( size < 15+(4*15) )	/* need space for up to 4 onepass_sigs */
 	    BUG(); /* supplied buffer too short */
 
 	if( afx->inp_eof ) {
@@ -907,27 +915,53 @@ armor_filter( void *opaque, int control,
 		afx->helplen = 0;
 	    }
 	    else if( afx->faked ) {
-		/* the buffer is at least 30 bytes long, so it
+		unsigned hashes = afx->hashes;
+		/* the buffer is at least 15+n*15 bytes long, so it
 		 * is easy to construct the packets */
 
-		/* first a onepass signature packet */
-		buf[0] = 0x90; /* old packet format, type 4, 1 length byte */
-		buf[1] = 13;   /* length */
-		buf[2] = 3;    /* version */
-		buf[3] = 0x01; /* sigclass 0x01 (data in canonical text mode)*/
-		buf[4] = 0;    /* digest algo (don't know) */
-		buf[5] = 0;    /* public key algo (don't know) */
-		memset(buf+6, 0, 8); /* don't know the keyid */
-		buf[14] = 1;   /* this is the last one */
+		hashes &= 1|2|4|8;
+		if( !hashes )
+		    hashes |= 4;  /* default to MD 5 */
+		n=0;
+		do {
+		    /* first some onepass signature packets */
+		    buf[n++] = 0x90; /* old format, type 4, 1 length byte */
+		    buf[n++] = 13;   /* length */
+		    buf[n++] = 3;    /* version */
+		    buf[n++] = 0x01; /* sigclass 0x01 (canonical text mode)*/
+		    if( hashes & 1 ) {
+			hashes &= ~1;
+			buf[n++] = DIGEST_ALGO_RMD160;
+		    }
+		    else if( hashes & 2 ) {
+			hashes &= ~2;
+			buf[n++] = DIGEST_ALGO_SHA1;
+		    }
+		    else if( hashes & 4 ) {
+			hashes &= ~4;
+			buf[n++] = DIGEST_ALGO_MD5;
+		    }
+		    else if( hashes & 8 ) {
+			hashes &= ~8;
+			buf[n++] = DIGEST_ALGO_TIGER;
+		    }
+		    else
+			buf[n++] = 0;	 /* (don't know) */
+
+		    buf[n++] = 0;    /* public key algo (don't know) */
+		    memset(buf+n, 0, 8); /* don't know the keyid */
+		    n += 8;
+		    buf[n++] = !hashes;   /* last one */
+		} while( hashes );
 
 		/* followed by a plaintext packet */
-		buf[15] = 0xaf; /* old packet format, type 11, var length */
-		buf[16] = 0;	/* set the length header */
-		buf[17] = 6;
-		buf[18] = 't';  /* canonical text mode */
-		buf[19] = 0;	/* namelength */
-		memset(buf+20, 0, 4); /* timestamp */
-		n = 24;
+		buf[n++] = 0xaf; /* old packet format, type 11, var length */
+		buf[n++] = 0;	 /* set the length header */
+		buf[n++] = 6;
+		buf[n++] = 't';  /* canonical text mode */
+		buf[n++] = 0;	 /* namelength */
+		memset(buf+n, 0, 4); /* timestamp */
+		n += 4;
 	    }
 	    else if( !rc )
 		rc = radix64_read( afx, a, &n, buf, size );
diff --git a/g10/build-packet.c b/g10/build-packet.c
index 7048ad9a8..03e152e99 100644
--- a/g10/build-packet.c
+++ b/g10/build-packet.c
@@ -517,6 +517,11 @@ build_sig_subpkt( PKT_signature *sig, sigsubpkttype_t type,
     switch( type ) {
       case SIGSUBPKT_SIG_CREATED:
       case SIGSUBPKT_PRIV_ADD_SIG:
+      case SIGSUBPKT_PREF_SYM:
+      case SIGSUBPKT_PREF_HASH:
+      case SIGSUBPKT_PREF_COMPR:
+      case SIGSUBPKT_KS_FLAGS:
+      case SIGSUBPKT_KEY_EXPIRE:
 	       hashed = 1; break;
       default: hashed = 0; break;
     }
@@ -538,8 +543,8 @@ build_sig_subpkt( PKT_signature *sig, sigsubpkttype_t type,
 				  : m_alloc( n+2 );
     }
 
-    data[n0+0] = (n >> 8) & 0xff;
-    data[n0+1] = n & 0xff;
+    data[0] = (n >> 8) & 0xff;
+    data[1] = n & 0xff;
     data[n0+2] = buflen+1;
     data[n0+3] = type;
     memcpy(data+n0+4, buffer, buflen );
diff --git a/g10/filter.h b/g10/filter.h
index 72b44086a..2dc8a3e87 100644
--- a/g10/filter.h
+++ b/g10/filter.h
@@ -37,6 +37,7 @@ typedef struct {
     byte helpbuf[100];
     int  helpidx, helplen;
     unsigned empty;    /* empty line counter */
+    int hashes;        /* detected hash algorithms */
     int faked;
     int parse_state;
     int inp_checked;   /* set if inp has been checked */
diff --git a/g10/getkey.c b/g10/getkey.c
index 5f607ec51..c8e8ea012 100644
--- a/g10/getkey.c
+++ b/g10/getkey.c
@@ -30,6 +30,7 @@
 #include "iobuf.h"
 #include "keydb.h"
 #include "options.h"
+#include "main.h"
 
 #define MAX_PKC_CACHE_ENTRIES 500
 
@@ -595,6 +596,58 @@ compare_name( const char *uid, size_t uidlen, const char *name, int mode )
 }
 
 
+
+/****************
+ * Assume that knode points to a public key packet  and keyblock is
+ * the entire keyblock.  This function adds all relevant information from
+ * a selfsignature to the public key.
+ */
+
+static void
+add_stuff_from_selfsig( KBNODE keyblock, KBNODE knode )
+{
+    PKT_public_cert *pkc = knode->pkt->pkt.public_cert;
+    PKT_signature *sig;
+    KBNODE k;
+    u32 kid[2];
+
+    assert(    knode->pkt->pkttype == PKT_PUBLIC_CERT
+	    || knode->pkt->pkttype == PKT_PUBKEY_SUBCERT );
+
+    if( pkc->version < 4 )
+	return; /* this is only needed for version >=4 packets */
+
+    /* find the selfsignature */
+    if( knode->pkt->pkttype == PKT_PUBKEY_SUBCERT ) {
+	k = find_kbnode( keyblock, PKT_PUBLIC_CERT );
+	if( !k )
+	   BUG(); /* keyblock without primary key!!! */
+	keyid_from_pkc( knode->pkt->pkt.public_cert, kid );
+    }
+    else
+	keyid_from_pkc( pkc, kid );
+    for(k=keyblock; k; k = k->next ) {
+	if( k->pkt->pkttype == PKT_SIGNATURE
+	    && (sig=k->pkt->pkt.signature)->sig_class >= 0x10
+	    && sig->sig_class <= 0x13
+	    && sig->keyid[0] == kid[0]
+	    && sig->keyid[1] == kid[1]
+	    && sig->version > 3 ) {
+	    /* okay this is (the first) self-signature which can be used
+	     * fixme: Check how to handle subkey bindings
+	     * FIXME: We should only use this if the signature is valid
+	     *	      but this is time consuming - we muts provide another
+	     *	      way to handle this
+	     */
+	    const byte *p;
+	    p = parse_sig_subpkt( sig->hashed_data, SIGSUBPKT_KEY_EXPIRE, NULL );
+	    pkc->valid_days = p? ((buffer_to_u32(p)+86399L)/86400L):0;
+	    /* fixme: add usage etc. to pkc */
+	    break;
+	}
+    }
+}
+
 /****************
  * Lookup a key by scanning all keyrings
  *   mode 1 = lookup by NAME (exact)
@@ -718,6 +771,7 @@ lookup( PKT_public_cert *pkc, int mode,  u32 *keyid,
 	    assert(    k->pkt->pkttype == PKT_PUBLIC_CERT
 		    || k->pkt->pkttype == PKT_PUBKEY_SUBCERT );
 	    copy_public_cert( pkc, k->pkt->pkt.public_cert );
+	    add_stuff_from_selfsig( keyblock, k );
 	    if( ret_keyblock ) {
 		*ret_keyblock = keyblock;
 		keyblock = NULL;
diff --git a/g10/keyedit.c b/g10/keyedit.c
index f5c95ea32..8f3f16511 100644
--- a/g10/keyedit.c
+++ b/g10/keyedit.c
@@ -347,7 +347,7 @@ sign_key( const char *username, STRLIST locusr )
 						   node->pkt->pkt.user_id,
 						   NULL,
 						   skc_rover->skc,
-						   0x10, 0 );
+						   0x10, 0, NULL, NULL );
 		    if( rc ) {
 			log_error("make_keysig_packet failed: %s\n", g10_errstr(rc));
 			goto leave;
@@ -720,7 +720,9 @@ int
 make_keysig_packet( PKT_signature **ret_sig, PKT_public_cert *pkc,
 		    PKT_user_id *uid, PKT_public_cert *subpkc,
 		    PKT_secret_cert *skc,
-		    int sigclass, int digest_algo )
+		    int sigclass, int digest_algo,
+		    int (*mksubpkt)(PKT_signature *, void *), void *opaque
+		   )
 {
     PKT_signature *sig;
     int rc=0;
@@ -763,45 +765,50 @@ make_keysig_packet( PKT_signature **ret_sig, PKT_public_cert *pkc,
     sig->digest_algo = digest_algo;
     sig->timestamp = make_timestamp();
     sig->sig_class = sigclass;
-
-    if( sig->version >= 4 ) {
+    if( sig->version >= 4 )
 	build_sig_subpkt_from_sig( sig );
-	md_putc( md, sig->version );
-    }
-    md_putc( md, sig->sig_class );
-    if( sig->version < 4 ) {
-	u32 a = sig->timestamp;
-	md_putc( md, (a >> 24) & 0xff );
-	md_putc( md, (a >> 16) & 0xff );
-	md_putc( md, (a >>  8) & 0xff );
-	md_putc( md,  a        & 0xff );
-    }
-    else {
-	byte buf[6];
-	size_t n;
 
-	md_putc( md, sig->pubkey_algo );
-	md_putc( md, sig->digest_algo );
-	if( sig->hashed_data ) {
-	    n = (sig->hashed_data[0] << 8) | sig->hashed_data[1];
-	    md_write( md, sig->hashed_data, n+2 );
-	    n += 6;
+    if( sig->version >= 4 && mksubpkt )
+	rc = (*mksubpkt)( sig, opaque );
+
+    if( !rc ) {
+	if( sig->version >= 4 )
+	    md_putc( md, sig->version );
+	md_putc( md, sig->sig_class );
+	if( sig->version < 4 ) {
+	    u32 a = sig->timestamp;
+	    md_putc( md, (a >> 24) & 0xff );
+	    md_putc( md, (a >> 16) & 0xff );
+	    md_putc( md, (a >>	8) & 0xff );
+	    md_putc( md,  a	   & 0xff );
 	}
-	else
-	    n = 6;
-	/* add some magic */
-	buf[0] = sig->version;
-	buf[1] = 0xff;
-	buf[2] = n >> 24; /* hmmm, n is only 16 bit, so this is always 0 */
-	buf[3] = n >> 16;
-	buf[4] = n >>  8;
-	buf[5] = n;
-	md_write( md, buf, 6 );
+	else {
+	    byte buf[6];
+	    size_t n;
+
+	    md_putc( md, sig->pubkey_algo );
+	    md_putc( md, sig->digest_algo );
+	    if( sig->hashed_data ) {
+		n = (sig->hashed_data[0] << 8) | sig->hashed_data[1];
+		md_write( md, sig->hashed_data, n+2 );
+		n += 6;
+	    }
+	    else
+		n = 6;
+	    /* add some magic */
+	    buf[0] = sig->version;
+	    buf[1] = 0xff;
+	    buf[2] = n >> 24; /* hmmm, n is only 16 bit, so this is always 0 */
+	    buf[3] = n >> 16;
+	    buf[4] = n >>  8;
+	    buf[5] = n;
+	    md_write( md, buf, 6 );
 
-    }
-    md_final(md);
+	}
+	md_final(md);
 
-    rc = complete_sig( sig, skc, md );
+	rc = complete_sig( sig, skc, md );
+    }
 
     md_close( md );
     if( rc )
diff --git a/g10/keygen.c b/g10/keygen.c
index 21c388bfc..b79f9b9ea 100644
--- a/g10/keygen.c
+++ b/g10/keygen.c
@@ -35,11 +35,6 @@
 #include "i18n.h"
 
 
-#if 0
-  #define ENABLE_RSA_KEYGEN 1
-#endif
-
-
 static void
 write_uid( KBNODE root, const char *s )
 {
@@ -54,6 +49,65 @@ write_uid( KBNODE root, const char *s )
 }
 
 
+
+static int
+add_key_expire( PKT_signature *sig, void *opaque )
+{
+    PKT_secret_cert *skc = opaque;
+    byte buf[8];
+    u32  u;
+
+    if( skc->valid_days ) {
+	u = skc->valid_days * 86400L;
+	buf[0] = (u >> 24) & 0xff;
+	buf[1] = (u >> 16) & 0xff;
+	buf[2] = (u >>	8) & 0xff;
+	buf[3] = u & 0xff;
+	build_sig_subpkt( sig, SIGSUBPKT_KEY_EXPIRE, buf, 4 );
+    }
+
+    return 0;
+}
+
+
+/****************
+ * Add preference to the self signature packet.
+ * This is only called for packets with version > 3.
+ */
+static int
+add_prefs( PKT_signature *sig, void *opaque )
+{
+    byte buf[8];
+
+    add_key_expire( sig, opaque );
+
+    buf[0] = CIPHER_ALGO_BLOWFISH;
+    buf[1] = CIPHER_ALGO_CAST5;
+    build_sig_subpkt( sig, SIGSUBPKT_PREF_SYM, buf, 2 );
+
+    buf[0] = DIGEST_ALGO_RMD160;
+    buf[1] = DIGEST_ALGO_SHA1;
+    buf[2] = DIGEST_ALGO_TIGER;
+    buf[3] = DIGEST_ALGO_MD5;
+    build_sig_subpkt( sig, SIGSUBPKT_PREF_HASH, buf, 4 );
+
+    buf[0] = 2;
+    buf[1] = 1;
+    build_sig_subpkt( sig, SIGSUBPKT_PREF_COMPR, buf, 2 );
+
+    buf[0] = 0x80; /* no modify - It is reasonable that a key holder
+		    * has the possibility to reject signatures from users
+		    * who are known to sign everything without any
+		    * validation - so a signed key should be send
+		    * to the holder who in turn can put it on a keyserver
+		    */
+    build_sig_subpkt( sig, SIGSUBPKT_KS_FLAGS, buf, 1 );
+
+    return 0;
+}
+
+
+
 static int
 write_selfsig( KBNODE root, KBNODE pub_root, PKT_secret_cert *skc )
 {
@@ -79,7 +133,8 @@ write_selfsig( KBNODE root, KBNODE pub_root, PKT_secret_cert *skc )
     pkc = node->pkt->pkt.public_cert;
 
     /* and make the signature */
-    rc = make_keysig_packet( &sig, pkc, uid, NULL, skc, 0x13, 0 );
+    rc = make_keysig_packet( &sig, pkc, uid, NULL, skc, 0x13, 0,
+			     add_prefs, skc );
     if( rc ) {
 	log_error("make_keysig_packet failed: %s\n", g10_errstr(rc) );
 	return rc;
@@ -119,7 +174,8 @@ write_keybinding( KBNODE root, KBNODE pub_root, PKT_secret_cert *skc )
 	BUG();
 
     /* and make the signature */
-    rc = make_keysig_packet( &sig, pkc, NULL, subpkc, skc, 0x18, 0 );
+    rc = make_keysig_packet( &sig, pkc, NULL, subpkc, skc, 0x18, 0,
+				    add_key_expire, skc );
     if( rc ) {
 	log_error("make_keysig_packet failed: %s\n", g10_errstr(rc) );
 	return rc;
@@ -134,7 +190,7 @@ write_keybinding( KBNODE root, KBNODE pub_root, PKT_secret_cert *skc )
 
 
 static int
-gen_elg(unsigned nbits, KBNODE pub_root, KBNODE sec_root, DEK *dek,
+gen_elg(int algo, unsigned nbits, KBNODE pub_root, KBNODE sec_root, DEK *dek,
 	STRING2KEY *s2k, PKT_secret_cert **ret_skc, u16 valid_days,
 							int version )
 {
@@ -146,7 +202,8 @@ gen_elg(unsigned nbits, KBNODE pub_root, KBNODE sec_root, DEK *dek,
     MPI skey[4];
     MPI *factors;
 
-    rc = pubkey_generate( PUBKEY_ALGO_ELGAMAL, nbits, skey, &factors );
+    assert( is_ELGAMAL(algo) );
+    rc = pubkey_generate( algo, nbits, skey, &factors );
     if( rc ) {
 	log_error("pubkey_generate failed: %s\n", g10_errstr(rc) );
 	return rc;
@@ -157,7 +214,7 @@ gen_elg(unsigned nbits, KBNODE pub_root, KBNODE sec_root, DEK *dek,
     skc->timestamp = pkc->timestamp = make_timestamp();
     skc->version = pkc->version = version;
     skc->valid_days = pkc->valid_days = valid_days;
-    skc->pubkey_algo = pkc->pubkey_algo = PUBKEY_ALGO_ELGAMAL;
+    skc->pubkey_algo = pkc->pubkey_algo = algo;
 		       pkc->pkey[0] = mpi_copy( skey[0] );
 		       pkc->pkey[1] = mpi_copy( skey[1] );
 		       pkc->pkey[2] = mpi_copy( skey[2] );
@@ -203,73 +260,6 @@ gen_elg(unsigned nbits, KBNODE pub_root, KBNODE sec_root, DEK *dek,
 }
 
 
-
-#ifdef ENABLE_RSA_KEYGEN
-static int
-gen_rsa(unsigned nbits, KBNODE pub_root, KBNODE sec_root, DEK *dek,
-	STRING2KEY *s2k, PKT_secret_cert **ret_skc, u16 valid_days )
-{
-    int rc;
-    PACKET *pkt;
-    PKT_secret_cert *skc;
-    PKT_public_cert *pkc;
-    RSA_public_key pk;
-    RSA_secret_key sk;
-
-    rsa_generate( &pk, &sk, nbits );
-
-    skc = m_alloc_clear( sizeof *skc );
-    pkc = m_alloc_clear( sizeof *pkc );
-    skc->timestamp = pkc->timestamp = make_timestamp();
-    skc->valid_days = pkc->valid_days = valid_days;
-    skc->pubkey_algo = pkc->pubkey_algo = PUBKEY_ALGO_RSA;
-		       memset(&pkc->mfx, 0, sizeof pkc->mfx);
-		       pkc->d.rsa.rsa_n = pk.n;
-		       pkc->d.rsa.rsa_e = pk.e;
-    skc->d.rsa.rsa_n = sk.n;
-    skc->d.rsa.rsa_e = sk.e;
-    skc->d.rsa.rsa_d = sk.d;
-    skc->d.rsa.rsa_p = sk.p;
-    skc->d.rsa.rsa_q = sk.q;
-    skc->d.rsa.rsa_u = sk.u;
-    skc->d.rsa.csum  = checksum_mpi_counted_nbits( skc->d.rsa.rsa_d );
-    skc->d.rsa.csum += checksum_mpi_counted_nbits( skc->d.rsa.rsa_p );
-    skc->d.rsa.csum += checksum_mpi_counted_nbits( skc->d.rsa.rsa_q );
-    skc->d.rsa.csum += checksum_mpi_counted_nbits( skc->d.rsa.rsa_u );
-
-    if( ret_skc ) /* not a subkey: return an unprotected version of the skc */
-	*ret_skc = copy_secret_cert( NULL, skc );
-
-    if( dek ) {
-	skc->d.rsa.is_protected = 1;
-	skc->d.rsa.protect_algo = CIPHER_ALGO_BLOWFISH;
-	randomize_buffer( skc->d.rsa.protect.blowfish.iv, 8, 1);
-	skc->d.rsa.csum += checksum_counted_nbits(
-					skc->d.rsa.protect.blowfish.iv, 8 );
-	rc = protect_secret_key( skc, dek );
-	if( rc ) {
-	    log_error("protect_secret_key failed: %s\n", g10_errstr(rc) );
-	    free_public_cert(pkc);
-	    free_secret_cert(skc);
-	    return rc;
-	}
-    }
-
-    pkt = m_alloc_clear(sizeof *pkt);
-    pkt->pkttype = ret_skc ? PKT_PUBLIC_CERT : PKT_PUBKEY_SUBCERT;
-    pkt->pkt.public_cert = pkc;
-    add_kbnode(pub_root, new_kbnode( pkt ));
-
-    pkt = m_alloc_clear(sizeof *pkt);
-    pkt->pkttype = ret_skc ? PKT_SECRET_CERT : PKT_SECKEY_SUBCERT;
-    pkt->pkt.secret_cert = skc;
-    add_kbnode(sec_root, new_kbnode( pkt ));
-
-    return rc;
-}
-#endif /*ENABLE_RSA_KEYGEN*/
-
-
 /****************
  * Generate a DSA key
  */
@@ -298,15 +288,12 @@ gen_dsa(unsigned nbits, KBNODE pub_root, KBNODE sec_root, DEK *dek,
     pkc = m_alloc_clear( sizeof *pkc );
     skc->timestamp = pkc->timestamp = make_timestamp();
     skc->version = pkc->version = 4;
-    /* valid days are not stored in the packet, but it is
-     * used here to put it into the signature.
-     */
     skc->valid_days = pkc->valid_days = valid_days;
     skc->pubkey_algo = pkc->pubkey_algo = PUBKEY_ALGO_DSA;
-		       pkc->pkey[0] = skey[0];
-		       pkc->pkey[1] = skey[1];
-		       pkc->pkey[2] = skey[2];
-		       pkc->pkey[3] = skey[3];
+		       pkc->pkey[0] = mpi_copy( skey[0] );
+		       pkc->pkey[1] = mpi_copy( skey[1] );
+		       pkc->pkey[2] = mpi_copy( skey[2] );
+		       pkc->pkey[3] = mpi_copy( skey[3] );
     skc->skey[0] = skey[0];
     skc->skey[1] = skey[1];
     skc->skey[2] = skey[2];
@@ -317,7 +304,7 @@ gen_dsa(unsigned nbits, KBNODE pub_root, KBNODE sec_root, DEK *dek,
 
     skc->csum = checksum_mpi_counted_nbits( skc->skey[4] );
     if( ret_skc ) /* not a subkey: return an unprotected version of the skc */
-	 *ret_skc = copy_secret_cert( NULL, skc );
+	*ret_skc = copy_secret_cert( NULL, skc );
 
     if( dek ) {
 	skc->protect.algo = dek->algo;
@@ -383,47 +370,52 @@ check_valid_days( const char *s )
 }
 
 
+/****************
+ * Returns o to create both a DSA and a ElGamal key.
+ */
 static int
-ask_algo( int *ret_v4 )
+ask_algo( int *ret_v4, int addmode )
 {
     char *answer;
     int algo;
 
-    tty_printf(_("Please select the algorithm to use:\n"
-		 "   (1) ElGamal is the suggested one.\n"
-		 "   (2) ElGamal using v4 packets (OpenPGP)\n"
-		 "   (3) DSA can only be used for signatures.\n"));
-  #ifdef ENABLE_RSA_KEYGEN
-    tty_printf(_("   (4) RSA cannot be used in the U.S.\n"));
-  #endif
+    tty_printf(_("Please select what kind of key you want:\n"));
+    if( !addmode )
+	tty_printf(_("   (%d) DSA and ElGamal (default)\n"), 1 );
+    tty_printf(    _("   (%d) ElGamal (sign and encrypt)\n"), 2 );
+    tty_printf(    _("   (%d) ElGamal (encrypt only)\n"), 3 );
+    tty_printf(    _("   (%d) DSA (sign only)\n"), 4 );
+    tty_printf(    _("   (%d) ElGamal in a v3 packet\n"), 5 );
 
-    *ret_v4 = 0;
+    *ret_v4 = 1;
     for(;;) {
-      #ifdef ENABLE_RSA_KEYGEN
-	answer = tty_get(_("Your selection? (1,2,3,4) "));
-      #else
-	answer = tty_get(_("Your selection? (1,2,3) "));
-      #endif
+	answer = tty_get(_("Your selection? "));
 	tty_kill_prompt();
 	algo = *answer? atoi(answer): 1;
 	m_free(answer);
-	if( algo == 1 || algo == 2 ) {
-	    if( algo == 2 )
-		*ret_v4 = 1;
+	if( algo == 1 && !addmode ) {
+	    algo = 0;	/* create both keys */
+	    break;
+	}
+	else if( algo == 2 ) {
 	    algo = PUBKEY_ALGO_ELGAMAL;
 	    break;
 	}
 	else if( algo == 3 ) {
-	    *ret_v4 = 1;
-	    algo = PUBKEY_ALGO_DSA;
+	    algo = PUBKEY_ALGO_ELGAMAL_E;
 	    break;
 	}
-      #ifdef ENABLE_RSA_KEYGEN
 	else if( algo == 4 ) {
-	    algo = PUBKEY_ALGO_RSA;
+	    algo = PUBKEY_ALGO_DSA;
+	    break;
+	}
+	else if( algo == 5 ) {
+	    algo = PUBKEY_ALGO_ELGAMAL_E;
+	    *ret_v4 = 0;
 	    break;
 	}
-      #endif
+	else
+	    tty_printf(_("Invalid selection.\n"));
     }
     return algo;
 }
@@ -703,13 +695,9 @@ do_create( int algo, unsigned nbits, KBNODE pub_root, KBNODE sec_root,
 "network and the disks) during the prime generation; this gives the random\n"
 "number generator a better chance to gain enough entropy.\n") );
 
-    if( algo == PUBKEY_ALGO_ELGAMAL )
-	rc = gen_elg(nbits, pub_root, sec_root, dek, s2k,
+    if( algo == PUBKEY_ALGO_ELGAMAL || algo == PUBKEY_ALGO_ELGAMAL_E )
+	rc = gen_elg(algo, nbits, pub_root, sec_root, dek, s2k,
 			   skc, valid_days, v4_packet? 4:3 );
-  #ifdef ENABLE_RSA_KEYGEN
-    else if( algo == PUBKEY_ALGO_RSA )
-	rc = gen_rsa(nbits, pub_root, sec_root, dek, s2k, skc, valid_days  );
-  #endif
     else if( algo == PUBKEY_ALGO_DSA )
 	rc = gen_dsa(nbits, pub_root, sec_root, dek, s2k, skc, valid_days);
     else
@@ -745,13 +733,19 @@ generate_keypair()
     int algo;
     int ndays;
     int v4;
+    int both = 0;
 
     if( opt.batch || opt.answer_yes || opt.answer_no ) {
 	log_error(_("Key generation can only be used in interactive mode\n"));
 	return;
     }
 
-    algo = ask_algo( &v4 );
+    algo = ask_algo( &v4, 0 );
+    if( !algo ) {
+	algo = PUBKEY_ALGO_ELGAMAL;
+	both = 1;
+	tty_printf(_("DSA keypair will have 1024 bits.\n"));
+    }
     nbits = ask_keysize( algo );
     ndays = ask_valid_days();
     uid = ask_user_id();
@@ -774,7 +768,12 @@ generate_keypair()
     pub_root = make_comment_node("#"); delete_kbnode(pub_root);
     sec_root = make_comment_node("#"); delete_kbnode(sec_root);
 
-    rc = do_create( algo, nbits, pub_root, sec_root, dek, s2k, &skc, ndays, v4);
+    if( both )
+	rc = do_create( PUBKEY_ALGO_DSA, 1024, pub_root, sec_root,
+					       dek, s2k, &skc, ndays, 1);
+    else
+	rc = do_create( algo,		nbits, pub_root, sec_root,
+					       dek, s2k, &skc, ndays, v4);
     if( !rc )
 	write_uid(pub_root, uid );
     if( !rc )
@@ -784,6 +783,16 @@ generate_keypair()
     if( !rc )
 	rc = write_selfsig(sec_root, pub_root, skc);
 
+    if( both ) {
+	rc = do_create( algo, nbits, pub_root, sec_root,
+					  dek, s2k, NULL, ndays, 1 );
+	if( !rc )
+	    rc = write_keybinding(pub_root, pub_root, skc);
+	if( !rc )
+	    rc = write_keybinding(sec_root, pub_root, skc);
+    }
+
+
     if( !rc ) {
 	KBPOS pub_kbpos;
 	KBPOS sec_kbpos;
@@ -958,7 +967,8 @@ generate_subkeypair( const char *username )
 	goto leave;
 
 
-    algo = ask_algo( &v4 );
+    algo = ask_algo( &v4, 1 );
+    assert(algo);
     nbits = ask_keysize( algo );
     ndays = ask_valid_days();
 
diff --git a/g10/main.h b/g10/main.h
index 0b30084e3..c50a07147 100644
--- a/g10/main.h
+++ b/g10/main.h
@@ -50,6 +50,7 @@ u16 checksum_u16( unsigned n );
 u16 checksum( byte *p, unsigned n );
 u16 checksum_mpi( MPI a );
 u16 checksum_mpi_counted_nbits( MPI a );
+u32 buffer_to_u32( const byte *buffer );
 
 /*-- encode.c --*/
 int encode_symmetric( const char *filename );
diff --git a/g10/mainproc.c b/g10/mainproc.c
index a807f85d9..a69217a3a 100644
--- a/g10/mainproc.c
+++ b/g10/mainproc.c
@@ -232,25 +232,42 @@ static void
 proc_plaintext( CTX c, PACKET *pkt )
 {
     PKT_plaintext *pt = pkt->pkt.plaintext;
-    int rc;
+    int any, rc;
+    KBNODE n;
 
     if( opt.verbose )
 	log_info("original file name='%.*s'\n", pt->namelen, pt->name);
     free_md_filter_context( &c->mfx );
-    /* FIXME: take the digest algo(s) to use from the
-     * onepass_sig packet (if we have these)
-     * And look at the sigclass to check whether we should use the
-     * textmode filter (sigclass 0x01)
+    /* fixme: look at the sigclass to check whether we should use the
+     *	      textmode filter (sigclass 0x01)
      */
-    c->mfx.md = md_open( DIGEST_ALGO_RMD160, 0);
-    /*md_start_debug(c->mfx.md, "proc_plaintext");*/
-    md_enable( c->mfx.md, DIGEST_ALGO_SHA1 );
-    md_enable( c->mfx.md, DIGEST_ALGO_MD5 );
-    if( !check_digest_algo(DIGEST_ALGO_TIGER) )
-	md_enable( c->mfx.md, DIGEST_ALGO_TIGER );
-    rc = handle_plaintext( pt, &c->mfx );
+    c->mfx.md = md_open( 0, 0);
+    any = 0;
+    for(n=c->list; n; n = n->next ) {
+	if( n->pkt->pkttype == PKT_ONEPASS_SIG
+	    && n->pkt->pkt.onepass_sig->digest_algo ) {
+	    md_enable( c->mfx.md, n->pkt->pkt.onepass_sig->digest_algo );
+	    any = 1;
+	}
+    }
+    if( !any ) { /* no onepass sig packet: enable all algos */
+	md_enable( c->mfx.md, DIGEST_ALGO_RMD160 );
+	md_enable( c->mfx.md, DIGEST_ALGO_SHA1 );
+	md_enable( c->mfx.md, DIGEST_ALGO_MD5 );
+    }
+    if( c->mfx.md ) {
+	m_check(c->mfx.md);
+	if( c->mfx.md->list )
+	    m_check( c->mfx.md->list );
+    }
+    rc = handle_plaintext( pt, &c->mfx, c->sigs_only );
     if( rc )
 	log_error( "handle plaintext failed: %s\n", g10_errstr(rc));
+    if( c->mfx.md ) {
+	m_check(c->mfx.md);
+	if( c->mfx.md->list )
+	    m_check( c->mfx.md->list );
+    }
     free_packet(pkt);
     c->last_was_session_key = 0;
 }
@@ -312,6 +329,12 @@ do_check_sig( CTX c, KBNODE node, int *is_selfsig )
     if( (rc=check_digest_algo(algo)) )
 	return rc;
 
+    if( c->mfx.md ) {
+	m_check(c->mfx.md);
+	if( c->mfx.md->list )
+	    m_check( c->mfx.md->list );
+    }
+
     if( sig->sig_class == 0x00 ) {
 	if( c->mfx.md )
 	    md = md_copy( c->mfx.md );
@@ -792,7 +815,7 @@ check_sig_and_print( CTX c, KBNODE node )
     tstr = asctime(localtime (&stamp));
     astr = pubkey_algo_to_string( sig->pubkey_algo );
     log_info(_("Signature made %.*s using %s key ID %08lX\n"),
-		strlen(tstr)-1, tstr, astr? astr: "?", (ulong)sig->keyid[1] );
+	    (int)strlen(tstr)-1, tstr, astr? astr: "?", (ulong)sig->keyid[1] );
 
     rc = do_check_sig(c, node, NULL );
     if( !rc || rc == G10ERR_BAD_SIGN ) {
diff --git a/g10/misc.c b/g10/misc.c
index 0c2b6ac4a..470307363 100644
--- a/g10/misc.c
+++ b/g10/misc.c
@@ -152,3 +152,15 @@ checksum_mpi_counted_nbits( MPI a )
     return csum;
 }
 
+
+u32
+buffer_to_u32( const byte *buffer )
+{
+    unsigned long a;
+    a =  *buffer << 24;
+    a |= buffer[1] << 16;
+    a |= buffer[2] << 8;
+    a |= buffer[3];
+    return a;
+}
+
diff --git a/g10/packet.h b/g10/packet.h
index 4f04e1ae4..c928cf46d 100644
--- a/g10/packet.h
+++ b/g10/packet.h
@@ -276,7 +276,7 @@ int decrypt_data( PKT_encrypted *ed, DEK *dek );
 int encrypt_data( PKT_encrypted *ed, DEK *dek );
 
 /*-- plaintext.c --*/
-int handle_plaintext( PKT_plaintext *pt, md_filter_context_t *mfx );
+int handle_plaintext( PKT_plaintext *pt, md_filter_context_t *mfx,int nooutput);
 int ask_for_detached_datafile( md_filter_context_t *mfx, const char *inname );
 
 /*-- comment.c --*/
@@ -286,6 +286,8 @@ int write_comment( IOBUF out, const char *s );
 int make_keysig_packet( PKT_signature **ret_sig, PKT_public_cert *pkc,
 			PKT_user_id *uid, PKT_public_cert *subpkc,
 			PKT_secret_cert *skc,
-			int sigclass, int digest_algo );
+			int sigclass, int digest_algo,
+			int (*mksubpkt)(PKT_signature *, void *),
+			void *opaque  );
 
 #endif /*G10_PACKET_H*/
diff --git a/g10/parse-packet.c b/g10/parse-packet.c
index ba26089c5..bf26b7a39 100644
--- a/g10/parse-packet.c
+++ b/g10/parse-packet.c
@@ -32,6 +32,7 @@
 #include "memory.h"
 #include "filter.h"
 #include "options.h"
+#include "main.h"
 
 static int mpi_print_mode = 0;
 static int list_mode = 0;
@@ -85,16 +86,6 @@ read_32(IOBUF inp)
     return a;
 }
 
-static unsigned long
-buffer_to_u32( const byte *buffer )
-{
-    unsigned long a;
-    a =  *buffer << 24;
-    a |= buffer[1] << 16;
-    a |= buffer[2] << 8;
-    a |= buffer[3];
-    return a;
-}
 
 int
 set_packet_list_mode( int mode )
@@ -622,6 +613,8 @@ parse_sig_subpkt( const byte *buffer, sigsubpkttype_t reqtype, size_t *ret_n )
 	*ret_n = n;
     switch( type ) {
       case SIGSUBPKT_SIG_CREATED:
+      case SIGSUBPKT_SIG_EXPIRE:
+      case SIGSUBPKT_KEY_EXPIRE:
 	if( n < 4 )
 	    break;
 	return buffer;
diff --git a/g10/plaintext.c b/g10/plaintext.c
index cdf4fe2a2..161db58d4 100644
--- a/g10/plaintext.c
+++ b/g10/plaintext.c
@@ -40,16 +40,18 @@
  *	 bytes from the plaintext.
  */
 int
-handle_plaintext( PKT_plaintext *pt, md_filter_context_t *mfx )
+handle_plaintext( PKT_plaintext *pt, md_filter_context_t *mfx, int nooutput )
 {
-    char *fname;
+    char *fname = NULL;
     FILE *fp = NULL;
     int rc = 0;
     int c;
     int convert = pt->mode == 't';
 
     /* create the filename as C string */
-    if( opt.outfile ) {
+    if( nooutput )
+	;
+    else if( opt.outfile ) {
 	fname = m_alloc( strlen( opt.outfile ) + 1);
 	strcpy(fname, opt.outfile );
     }
@@ -59,14 +61,16 @@ handle_plaintext( PKT_plaintext *pt, md_filter_context_t *mfx )
 	fname[pt->namelen] = 0;
     }
 
-    if( !*fname || (*fname=='-' && !fname[1])) {
+    if( nooutput )
+	;
+    else if( !*fname || (*fname=='-' && !fname[1])) {
 	/* no filename or "-" given; write to stdout */
 	fp = stdout;
     }
     else if( overwrite_filep( fname ) )
 	goto leave;
 
-    if( fp )
+    if( fp || nooutput )
 	;
     else if( !(fp = fopen(fname,"wb")) ) {
 	log_error("Error creating '%s': %s\n", fname, strerror(errno) );
@@ -86,10 +90,13 @@ handle_plaintext( PKT_plaintext *pt, md_filter_context_t *mfx )
 		md_putc(mfx->md, c );
 	    if( convert && c == '\r' )
 		continue; /* FIXME: this hack is too simple */
-	    if( putc( c, fp ) == EOF ) {
-		log_error("Error writing to '%s': %s\n", fname, strerror(errno) );
-		rc = G10ERR_WRITE_FILE;
-		goto leave;
+	    if( fp ) {
+		if( putc( c, fp ) == EOF ) {
+		    log_error("Error writing to '%s': %s\n",
+					    fname, strerror(errno) );
+		    rc = G10ERR_WRITE_FILE;
+		    goto leave;
+		}
 	    }
 	}
     }
@@ -99,11 +106,13 @@ handle_plaintext( PKT_plaintext *pt, md_filter_context_t *mfx )
 		md_putc(mfx->md, c );
 	    if( convert && c == '\r' )
 		continue; /* FIXME: this hack is too simple */
-	    if( putc( c, fp ) == EOF ) {
-		log_error("Error writing to '%s': %s\n",
-					    fname, strerror(errno) );
-		rc = G10ERR_WRITE_FILE;
-		goto leave;
+	    if( fp ) {
+		if( putc( c, fp ) == EOF ) {
+		    log_error("Error writing to '%s': %s\n",
+						fname, strerror(errno) );
+		    rc = G10ERR_WRITE_FILE;
+		    goto leave;
+		}
 	    }
 	}
 	iobuf_clear_eof(pt->buf);
diff --git a/g10/revoke.c b/g10/revoke.c
index cafe84de3..4819d91c2 100644
--- a/g10/revoke.c
+++ b/g10/revoke.c
@@ -159,7 +159,7 @@ gen_revoke( const char *uname )
 
 
     /* create it */
-    rc = make_keysig_packet( &sig, pkc, NULL, NULL, skc, 0x20, 0);
+    rc = make_keysig_packet( &sig, pkc, NULL, NULL, skc, 0x20, 0, NULL, NULL);
     if( rc ) {
 	log_error("make_keysig_packet failed: %s\n", g10_errstr(rc));
 	goto leave;
diff --git a/g10/sig-check.c b/g10/sig-check.c
index 76f0aaca7..200d67048 100644
--- a/g10/sig-check.c
+++ b/g10/sig-check.c
@@ -31,6 +31,7 @@
 #include "cipher.h"
 #include "main.h"
 #include "status.h"
+#include "i18n.h"
 
 struct cmp_help_context_s {
     PKT_signature *sig;
@@ -148,6 +149,7 @@ do_check( PKT_public_cert *pkc, PKT_signature *sig, MD_HANDLE digest )
     MPI result = NULL;
     int rc=0;
     struct cmp_help_context_s ctx;
+    u32 cur_time;
 
     if( pkc->version == 4 && pkc->pubkey_algo == PUBKEY_ALGO_ELGAMAL_E ) {
 	log_info("this is a PGP generated "
@@ -158,6 +160,21 @@ do_check( PKT_public_cert *pkc, PKT_signature *sig, MD_HANDLE digest )
     if( pkc->timestamp > sig->timestamp )
 	return G10ERR_TIME_CONFLICT; /* pubkey newer that signature */
 
+    cur_time = make_timestamp();
+    if( pkc->timestamp > cur_time ) {
+	log_info(_("public key created in future (time warp or clock problem)\n"));
+	return G10ERR_TIME_CONFLICT;
+    }
+
+    if( pkc->valid_days && add_days_to_timestamp(pkc->timestamp,
+						pkc->valid_days) < cur_time ) {
+	log_info(_("warning: signature key expired %s\n"), strtimestamp(
+				    add_days_to_timestamp(pkc->timestamp,
+							  pkc->valid_days)));
+	write_status(STATUS_SIGEXPIRED);
+    }
+
+
     if( (rc=check_digest_algo(sig->digest_algo)) )
 	return rc;
     if( (rc=check_pubkey_algo(sig->pubkey_algo)) )
diff --git a/g10/sign.c b/g10/sign.c
index 2505526ce..9245f67f7 100644
--- a/g10/sign.c
+++ b/g10/sign.c
@@ -98,7 +98,22 @@ hash_for(int pubkey_algo )
     return DEFAULT_DIGEST_ALGO;
 }
 
+static int
+only_old_style( SKC_LIST skc_list )
+{
+    SKC_LIST skc_rover = NULL;
+    int old_style = 0;
 
+    /* if there are only old style capable key we use the old sytle */
+    for( skc_rover = skc_list; skc_rover; skc_rover = skc_rover->next ) {
+	PKT_secret_cert *skc = skc_rover->skc;
+	if( skc->pubkey_algo == PUBKEY_ALGO_RSA && skc->version < 4 )
+	    old_style = 1;
+	else
+	    return 0;
+    }
+    return old_style;
+}
 
 /****************
  * Sign the files whose names are in FILENAME.
@@ -131,6 +146,8 @@ sign_file( STRLIST filenames, int detached, STRLIST locusr,
     SKC_LIST skc_list = NULL;
     SKC_LIST skc_rover = NULL;
     int multifile = 0;
+    int old_style = opt.rfc1991;
+
 
     memset( &afx, 0, sizeof afx);
     memset( &zfx, 0, sizeof zfx);
@@ -151,6 +168,8 @@ sign_file( STRLIST filenames, int detached, STRLIST locusr,
 
     if( (rc=build_skc_list( locusr, &skc_list, 1, 1 )) )
 	goto leave;
+    if( !old_style )
+	old_style = only_old_style( skc_list );
     if( encrypt ) {
 	if( (rc=build_pkc_list( remusr, &pkc_list, 2 )) )
 	    goto leave;
@@ -204,11 +223,13 @@ sign_file( STRLIST filenames, int detached, STRLIST locusr,
 	iobuf_push_filter( out, encrypt_filter, &efx );
     }
 
-    if( opt.compress && !outfile )
+    if( opt.compress && !outfile ) {
+	if( old_style )
+	    zfx.algo = 1;
 	iobuf_push_filter( out, compress_filter, &zfx );
+    }
 
-
-    if( !detached && !opt.rfc1991 ) {
+    if( !detached && !old_style ) {
 	/* loop over the secret certificates and build headers */
 	for( skc_rover = skc_list; skc_rover; skc_rover = skc_rover->next ) {
 	    PKT_secret_cert *skc;
@@ -439,6 +460,7 @@ clearsign_file( const char *fname, STRLIST locusr, const char *outfile )
     int rc = 0;
     SKC_LIST skc_list = NULL;
     SKC_LIST skc_rover = NULL;
+    int old_style = opt.rfc1991;
 
     memset( &afx, 0, sizeof afx);
     memset( &tfx, 0, sizeof tfx);
@@ -446,6 +468,8 @@ clearsign_file( const char *fname, STRLIST locusr, const char *outfile )
 
     if( (rc=build_skc_list( locusr, &skc_list, 1, 1 )) )
 	goto leave;
+    if( !old_style )
+	old_style = only_old_style( skc_list );
 
     /* prepare iobufs */
     if( !(inp = iobuf_open(fname)) ) {
@@ -469,9 +493,9 @@ clearsign_file( const char *fname, STRLIST locusr, const char *outfile )
 	goto leave;
     }
 
-    /* FIXME: This stuff is not correct if mutliple hash algos are used*/
+    /* FIXME: This stuff is not correct if multiple hash algos are used*/
     iobuf_writestr(out, "-----BEGIN PGP SIGNED MESSAGE-----\n" );
-    if( opt.rfc1991
+    if( old_style
 	|| (opt.def_digest_algo?opt.def_digest_algo:DEFAULT_DIGEST_ALGO)
 			      == DIGEST_ALGO_MD5 )
 	iobuf_writestr(out, "\n" );
diff --git a/g10/status.c b/g10/status.c
index 2546626ba..35367fbba 100644
--- a/g10/status.c
+++ b/g10/status.c
@@ -53,6 +53,7 @@ write_status_text( int no, const char *text)
       case STATUS_LEAVE  : s = "LEAVE\n"; break;
       case STATUS_ABORT  : s = "ABORT\n"; break;
       case STATUS_GOODSIG: s = "GOODSIG\n"; break;
+      case STATUS_SIGEXPIRED: s = "SIGEXPIRED\n"; break;
       case STATUS_BADSIG : s = "BADSIG\n"; break;
       case STATUS_ERRSIG : s = "ERRSIG\n"; break;
       case STATUS_BADARMOR : s = "BADARMOR\n"; break;
diff --git a/g10/status.h b/g10/status.h
index 6b0950f5f..8b5ffdacd 100644
--- a/g10/status.h
+++ b/g10/status.h
@@ -33,7 +33,7 @@
 #define STATUS_BADARMOR  7
 
 #define STATUS_RSA_OR_IDEA 8
-
+#define STATUS_SIGEXPIRED  9
 
 /*-- status.c --*/
 void set_status_fd( int fd );
diff --git a/g10/trustdb.c b/g10/trustdb.c
index bb4942c41..6ee436128 100644
--- a/g10/trustdb.c
+++ b/g10/trustdb.c
@@ -1705,7 +1705,7 @@ check_trust( PKT_public_cert *pkc, unsigned *r_trustlevel )
     TRUSTREC rec;
     unsigned trustlevel = TRUST_UNKNOWN;
     int rc=0;
-    int cur_time;
+    u32 cur_time;
 
     if( DBG_TRUST )
 	log_info("check_trust() called.\n");
diff --git a/include/cipher.h b/include/cipher.h
index 8544ee2e0..972b2ffe7 100644
--- a/include/cipher.h
+++ b/include/cipher.h
@@ -78,7 +78,9 @@ typedef struct {
     int  bufcount;
     int  secure;
     FILE  *debug;
+    int guard1;
     struct md_digest_list_s *list;
+    int guard2;
 } *MD_HANDLE;
 
 
diff --git a/mpi/ChangeLog b/mpi/ChangeLog
index 15da105fe..0519495c9 100644
--- a/mpi/ChangeLog
+++ b/mpi/ChangeLog
@@ -1,3 +1,7 @@
+Thu Jun 25 11:50:01 1998  Werner Koch  (wk@isil.d.shuttle.de)
+
+	* mips3/*.S: New
+
 Mon May 18 13:47:06 1998  Werner Koch  (wk@isil.d.shuttle.de)
 
 	* config.links: split mpih-shift into mpih-[lr]shift and
diff --git a/mpi/mips3/distfiles b/mpi/mips3/distfiles
new file mode 100644
index 000000000..b88f4f869
--- /dev/null
+++ b/mpi/mips3/distfiles
@@ -0,0 +1,9 @@
+README
+mpih-add1.S
+mpih-sub1.S
+mpih-mul1.S
+mpih-mul2.S
+mpih-mul3.S
+mpih-lshift.S
+mpih-rshift.S
+
diff --git a/mpi/mips3/mpih-add1.S b/mpi/mips3/mpih-add1.S
new file mode 100644
index 000000000..7ac5f38bd
--- /dev/null
+++ b/mpi/mips3/mpih-add1.S
@@ -0,0 +1,122 @@
+/* mips3  add_n -- Add two limb vectors of the same length > 0 and store
+ *		   sum in a third limb vector.
+ *	Copyright (C) 1995, 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
+ */
+
+
+/*******************
+ *  mpi_limb_t
+ *  mpihelp_add_n( mpi_ptr_t res_ptr,	($4)
+ *		   mpi_ptr_t s1_ptr,	($5)
+ *		   mpi_ptr_t s2_ptr,	($6)
+ *		   mpi_size_t size)	($7)
+ */
+
+	.text
+	.align	2
+	.globl	mpihelp_add_n
+	.ent	mpihelp_add_n
+mpihelp_add_n:
+	.set	noreorder
+	.set	nomacro
+
+	ld	$10,0($5)
+	ld	$11,0($6)
+
+	daddiu	$7,$7,-1
+	and	$9,$7,4-1	# number of limbs in first loop
+	beq	$9,$0,.L0	# if multiple of 4 limbs, skip first loop
+	 move	$2,$0
+
+	dsubu	$7,$7,$9
+
+.Loop0: daddiu	$9,$9,-1
+	ld	$12,8($5)
+	daddu	$11,$11,$2
+	ld	$13,8($6)
+	sltu	$8,$11,$2
+	daddu	$11,$10,$11
+	sltu	$2,$11,$10
+	sd	$11,0($4)
+	or	$2,$2,$8
+
+	daddiu	$5,$5,8
+	daddiu	$6,$6,8
+	move	$10,$12
+	move	$11,$13
+	bne	$9,$0,.Loop0
+	 daddiu $4,$4,8
+
+.L0:	beq	$7,$0,.Lend
+	 nop
+
+.Loop:	daddiu	$7,$7,-4
+
+	ld	$12,8($5)
+	daddu	$11,$11,$2
+	ld	$13,8($6)
+	sltu	$8,$11,$2
+	daddu	$11,$10,$11
+	sltu	$2,$11,$10
+	sd	$11,0($4)
+	or	$2,$2,$8
+
+	ld	$10,16($5)
+	daddu	$13,$13,$2
+	ld	$11,16($6)
+	sltu	$8,$13,$2
+	daddu	$13,$12,$13
+	sltu	$2,$13,$12
+	sd	$13,8($4)
+	or	$2,$2,$8
+
+	ld	$12,24($5)
+	daddu	$11,$11,$2
+	ld	$13,24($6)
+	sltu	$8,$11,$2
+	daddu	$11,$10,$11
+	sltu	$2,$11,$10
+	sd	$11,16($4)
+	or	$2,$2,$8
+
+	ld	$10,32($5)
+	daddu	$13,$13,$2
+	ld	$11,32($6)
+	sltu	$8,$13,$2
+	daddu	$13,$12,$13
+	sltu	$2,$13,$12
+	sd	$13,24($4)
+	or	$2,$2,$8
+
+	daddiu	$5,$5,32
+	daddiu	$6,$6,32
+
+	bne	$7,$0,.Loop
+	 daddiu $4,$4,32
+
+.Lend:	daddu	$11,$11,$2
+	sltu	$8,$11,$2
+	daddu	$11,$10,$11
+	sltu	$2,$11,$10
+	sd	$11,0($4)
+	j	$31
+	or	$2,$2,$8
+
+	.end	mpihelp_add_n
+
diff --git a/mpi/mips3/mpih-lshift.S b/mpi/mips3/mpih-lshift.S
new file mode 100644
index 000000000..37e9a5e1b
--- /dev/null
+++ b/mpi/mips3/mpih-lshift.S
@@ -0,0 +1,95 @@
+/* mips3    lshift
+ *	Copyright (C) 1995, 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
+ */
+
+/*******************
+ * mpi_limb_t
+ * mpihelp_lshift( mpi_ptr_t wp,	($4)
+ *		   mpi_ptr_t up,	($5)
+ *		   mpi_size_t usize,	($6)
+ *		   unsigned cnt)	($7)
+ */
+
+	.text
+	.align	2
+	.globl	mpihelp_lshift
+	.ent	mpihelp_lshift
+mpihelp_lshift:
+	.set	noreorder
+	.set	nomacro
+
+	dsll	$2,$6,3
+	daddu	$5,$5,$2	# make r5 point at end of src
+	ld	$10,-8($5)	# load first limb
+	dsubu	$13,$0,$7
+	daddu	$4,$4,$2	# make r4 point at end of res
+	daddiu	$6,$6,-1
+	and	$9,$6,4-1	# number of limbs in first loop
+	beq	$9,$0,.L0	# if multiple of 4 limbs, skip first loop
+	 dsrl	$2,$10,$13	# compute function result
+
+	dsubu	$6,$6,$9
+
+.Loop0: ld	$3,-16($5)
+	daddiu	$4,$4,-8
+	daddiu	$5,$5,-8
+	daddiu	$9,$9,-1
+	dsll	$11,$10,$7
+	dsrl	$12,$3,$13
+	move	$10,$3
+	or	$8,$11,$12
+	bne	$9,$0,.Loop0
+	 sd	$8,0($4)
+
+.L0:	beq	$6,$0,.Lend
+	 nop
+
+.Loop:	ld	$3,-16($5)
+	daddiu	$4,$4,-32
+	daddiu	$6,$6,-4
+	dsll	$11,$10,$7
+	dsrl	$12,$3,$13
+
+	ld	$10,-24($5)
+	dsll	$14,$3,$7
+	or	$8,$11,$12
+	sd	$8,24($4)
+	dsrl	$9,$10,$13
+
+	ld	$3,-32($5)
+	dsll	$11,$10,$7
+	or	$8,$14,$9
+	sd	$8,16($4)
+	dsrl	$12,$3,$13
+
+	ld	$10,-40($5)
+	dsll	$14,$3,$7
+	or	$8,$11,$12
+	sd	$8,8($4)
+	dsrl	$9,$10,$13
+
+	daddiu	$5,$5,-32
+	or	$8,$14,$9
+	bgtz	$6,.Loop
+	 sd	$8,0($4)
+
+.Lend:	dsll	$8,$10,$7
+	j	$31
+	sd	$8,-8($4)
+	.end	mpihelp_lshift
diff --git a/mpi/mips3/mpih-mul1.S b/mpi/mips3/mpih-mul1.S
new file mode 100644
index 000000000..fd349ee97
--- /dev/null
+++ b/mpi/mips3/mpih-mul1.S
@@ -0,0 +1,87 @@
+/* mips3 mpih-mul1.S -- Multiply a limb vector with a limb and store
+ *			the result in a second limb vector.
+ * Copyright (C) 1992, 1994, 1995, 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
+ */
+
+
+/*******************
+ * mpi_limb_t
+ * mpihelp_mul_1( mpi_ptr_t res_ptr,	(r4)
+ *		  mpi_ptr_t s1_ptr,	(r5)
+ *		  mpi_size_t s1_size,	(r6)
+ *		  mpi_limb_t s2_limb)	(r7)
+ */
+
+	.text
+	.align	4
+	.globl	mpihelp_mul_1
+	.ent	mpihelp_mul_1
+mpihelp_mul_1:
+	.set	noreorder
+	.set	nomacro
+
+ # warm up phase 0
+	ld	$8,0($5)
+
+ # warm up phase 1
+	daddiu	$5,$5,8
+	dmultu	$8,$7
+
+	daddiu	$6,$6,-1
+	beq	$6,$0,$LC0
+	 move	$2,$0		# zero cy2
+
+	daddiu	$6,$6,-1
+	beq	$6,$0,$LC1
+	ld	$8,0($5)	# load new s1 limb as early as possible
+
+Loop:	mflo	$10
+	mfhi	$9
+	daddiu	$5,$5,8
+	daddu	$10,$10,$2	# add old carry limb to low product limb
+	dmultu	$8,$7
+	ld	$8,0($5)	# load new s1 limb as early as possible
+	daddiu	$6,$6,-1	# decrement loop counter
+	sltu	$2,$10,$2	# carry from previous addition -> $2
+	sd	$10,0($4)
+	daddiu	$4,$4,8
+	bne	$6,$0,Loop
+	 daddu	$2,$9,$2	# add high product limb and carry from addition
+
+ # cool down phase 1
+$LC1:	mflo	$10
+	mfhi	$9
+	daddu	$10,$10,$2
+	sltu	$2,$10,$2
+	dmultu	$8,$7
+	sd	$10,0($4)
+	daddiu	$4,$4,8
+	daddu	$2,$9,$2	# add high product limb and carry from addition
+
+ # cool down phase 0
+$LC0:	mflo	$10
+	mfhi	$9
+	daddu	$10,$10,$2
+	sltu	$2,$10,$2
+	sd	$10,0($4)
+	j	$31
+	daddu	$2,$9,$2	# add high product limb and carry from addition
+
+	.end	mpihelp_mul_1
+
diff --git a/mpi/mips3/mpih-mul2.S b/mpi/mips3/mpih-mul2.S
new file mode 100644
index 000000000..1474b4f06
--- /dev/null
+++ b/mpi/mips3/mpih-mul2.S
@@ -0,0 +1,99 @@
+/* MIPS3   addmul_1 -- Multiply a limb vector with a single limb and
+ *		       add the product to a second limb vector.
+ * Copyright (C) 1992, 1994, 1995, 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
+ */
+
+
+/*******************
+ * mpi_limb_t
+ * mpihelp_addmul_1( mpi_ptr_t res_ptr,      (r4)
+ *		     mpi_ptr_t s1_ptr,	     (r5)
+ *		     mpi_size_t s1_size,     (r6)
+ *		     mpi_limb_t s2_limb)     (r7)
+ */
+
+	.text
+	.align	4
+	.globl	mpihelp_addmul_1
+	.ent	mpihelp_addmul_1
+mpihelp_addmul_1:
+	.set	noreorder
+	.set	nomacro
+
+ # warm up phase 0
+	ld	$8,0($5)
+
+ # warm up phase 1
+	daddiu	$5,$5,8
+	dmultu	$8,$7
+
+	daddiu	$6,$6,-1
+	beq	$6,$0,$LC0
+	 move	$2,$0		# zero cy2
+
+	daddiu	$6,$6,-1
+	beq	$6,$0,$LC1
+	ld	$8,0($5)	# load new s1 limb as early as possible
+
+Loop:	ld	$10,0($4)
+	mflo	$3
+	mfhi	$9
+	daddiu	$5,$5,8
+	daddu	$3,$3,$2	# add old carry limb to low product limb
+	dmultu	$8,$7
+	ld	$8,0($5)	# load new s1 limb as early as possible
+	daddiu	$6,$6,-1	# decrement loop counter
+	sltu	$2,$3,$2	# carry from previous addition -> $2
+	daddu	$3,$10,$3
+	sltu	$10,$3,$10
+	daddu	$2,$2,$10
+	sd	$3,0($4)
+	daddiu	$4,$4,8
+	bne	$6,$0,Loop
+	 daddu	$2,$9,$2	# add high product limb and carry from addition
+
+ # cool down phase 1
+$LC1:	ld	$10,0($4)
+	mflo	$3
+	mfhi	$9
+	daddu	$3,$3,$2
+	sltu	$2,$3,$2
+	dmultu	$8,$7
+	daddu	$3,$10,$3
+	sltu	$10,$3,$10
+	daddu	$2,$2,$10
+	sd	$3,0($4)
+	daddiu	$4,$4,8
+	daddu	$2,$9,$2	# add high product limb and carry from addition
+
+ # cool down phase 0
+$LC0:	ld	$10,0($4)
+	mflo	$3
+	mfhi	$9
+	daddu	$3,$3,$2
+	sltu	$2,$3,$2
+	daddu	$3,$10,$3
+	sltu	$10,$3,$10
+	daddu	$2,$2,$10
+	sd	$3,0($4)
+	j	$31
+	daddu	$2,$9,$2	# add high product limb and carry from addition
+
+	.end	mpihelp_addmul_1
+
diff --git a/mpi/mips3/mpih-mul3.S b/mpi/mips3/mpih-mul3.S
new file mode 100644
index 000000000..4616732f5
--- /dev/null
+++ b/mpi/mips3/mpih-mul3.S
@@ -0,0 +1,99 @@
+/* MIPS3 submul_1 -- Multiply a limb vector with a single limb and
+ *		     subtract the product from a second limb vector.
+ * Copyright (C) 1992, 1994, 1995, 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
+ */
+
+
+/*******************
+ * mpi_limb_t
+ * mpihelp_submul_1( mpi_ptr_t res_ptr,      (r4)
+ *		     mpi_ptr_t s1_ptr,	     (r5)
+ *		     mpi_size_t s1_size,     (r6)
+ *		     mpi_limb_t s2_limb)     (r7)
+ */
+
+	.text
+	.align	4
+	.globl	mpihelp_submul_1
+	.ent	mpihelp_submul_1
+mpihelp_submul_1:
+	.set	noreorder
+	.set	nomacro
+
+ # warm up phase 0
+	ld	$8,0($5)
+
+ # warm up phase 1
+	daddiu	$5,$5,8
+	dmultu	$8,$7
+
+	daddiu	$6,$6,-1
+	beq	$6,$0,$LC0
+	 move	$2,$0		# zero cy2
+
+	daddiu	$6,$6,-1
+	beq	$6,$0,$LC1
+	ld	$8,0($5)	# load new s1 limb as early as possible
+
+Loop:	ld	$10,0($4)
+	mflo	$3
+	mfhi	$9
+	daddiu	$5,$5,8
+	daddu	$3,$3,$2	# add old carry limb to low product limb
+	dmultu	$8,$7
+	ld	$8,0($5)	# load new s1 limb as early as possible
+	daddiu	$6,$6,-1	# decrement loop counter
+	sltu	$2,$3,$2	# carry from previous addition -> $2
+	dsubu	$3,$10,$3
+	sgtu	$10,$3,$10
+	daddu	$2,$2,$10
+	sd	$3,0($4)
+	daddiu	$4,$4,8
+	bne	$6,$0,Loop
+	 daddu	$2,$9,$2	# add high product limb and carry from addition
+
+ # cool down phase 1
+$LC1:	ld	$10,0($4)
+	mflo	$3
+	mfhi	$9
+	daddu	$3,$3,$2
+	sltu	$2,$3,$2
+	dmultu	$8,$7
+	dsubu	$3,$10,$3
+	sgtu	$10,$3,$10
+	daddu	$2,$2,$10
+	sd	$3,0($4)
+	daddiu	$4,$4,8
+	daddu	$2,$9,$2	# add high product limb and carry from addition
+
+ # cool down phase 0
+$LC0:	ld	$10,0($4)
+	mflo	$3
+	mfhi	$9
+	daddu	$3,$3,$2
+	sltu	$2,$3,$2
+	dsubu	$3,$10,$3
+	sgtu	$10,$3,$10
+	daddu	$2,$2,$10
+	sd	$3,0($4)
+	j	$31
+	daddu	$2,$9,$2	# add high product limb and carry from addition
+
+	.end	mpihelp_submul_1
+
diff --git a/mpi/mips3/mpih-rshift.S b/mpi/mips3/mpih-rshift.S
new file mode 100644
index 000000000..7bc084500
--- /dev/null
+++ b/mpi/mips3/mpih-rshift.S
@@ -0,0 +1,93 @@
+/* mips3    rshift
+ *	Copyright (C) 1995, 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
+ */
+
+/*******************
+ * mpi_limb_t
+ * mpihelp_rshift( mpi_ptr_t wp,	($4)
+ *		   mpi_ptr_t up,	($5)
+ *		   mpi_size_t usize,	($6)
+ *		   unsigned cnt)	($7)
+ */
+
+	.text
+	.align	2
+	.globl	mpihelp_rshift
+	.ent	mpihelp_rshift
+mpihelp_rshift:
+	.set	noreorder
+	.set	nomacro
+
+	ld	$10,0($5)	# load first limb
+	dsubu	$13,$0,$7
+	daddiu	$6,$6,-1
+	and	$9,$6,4-1	# number of limbs in first loop
+	beq	$9,$0,.L0	# if multiple of 4 limbs, skip first loop
+	 dsll	$2,$10,$13	# compute function result
+
+	dsubu	$6,$6,$9
+
+.Loop0: ld	$3,8($5)
+	daddiu	$4,$4,8
+	daddiu	$5,$5,8
+	daddiu	$9,$9,-1
+	dsrl	$11,$10,$7
+	dsll	$12,$3,$13
+	move	$10,$3
+	or	$8,$11,$12
+	bne	$9,$0,.Loop0
+	 sd	$8,-8($4)
+
+.L0:	beq	$6,$0,.Lend
+	 nop
+
+.Loop:	ld	$3,8($5)
+	daddiu	$4,$4,32
+	daddiu	$6,$6,-4
+	dsrl	$11,$10,$7
+	dsll	$12,$3,$13
+
+	ld	$10,16($5)
+	dsrl	$14,$3,$7
+	or	$8,$11,$12
+	sd	$8,-32($4)
+	dsll	$9,$10,$13
+
+	ld	$3,24($5)
+	dsrl	$11,$10,$7
+	or	$8,$14,$9
+	sd	$8,-24($4)
+	dsll	$12,$3,$13
+
+	ld	$10,32($5)
+	dsrl	$14,$3,$7
+	or	$8,$11,$12
+	sd	$8,-16($4)
+	dsll	$9,$10,$13
+
+	daddiu	$5,$5,32
+	or	$8,$14,$9
+	bgtz	$6,.Loop
+	 sd	$8,-8($4)
+
+.Lend:	dsrl	$8,$10,$7
+	j	$31
+	sd	$8,0($4)
+	.end	mpihelp_rshift
+
diff --git a/mpi/mips3/mpih-sub1.S b/mpi/mips3/mpih-sub1.S
new file mode 100644
index 000000000..f4ad4c999
--- /dev/null
+++ b/mpi/mips3/mpih-sub1.S
@@ -0,0 +1,123 @@
+/* mips3  sub_n -- Subtract two limb vectors of the same length > 0 and
+ *		  store difference in a third limb vector.
+ * Copyright (C) 1995, 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
+ */
+
+
+/*******************
+ *  mpi_limb_t
+ *  mpihelp_sub_n( mpi_ptr_t res_ptr,	(r4)
+ *		   mpi_ptr_t s1_ptr,	(r5)
+ *		   mpi_ptr_t s2_ptr,	(r6)
+ *		   mpi_size_t size)	(r7)
+ */
+
+
+	.text
+	.align	2
+	.globl	mpihelp_sub_n
+	.ent	mpihelp_sub_n
+mpihelp_sub_n:
+	.set	noreorder
+	.set	nomacro
+
+	ld	$10,0($5)
+	ld	$11,0($6)
+
+	daddiu	$7,$7,-1
+	and	$9,$7,4-1	# number of limbs in first loop
+	beq	$9,$0,.L0	# if multiple of 4 limbs, skip first loop
+	move   $2,$0
+
+	dsubu	$7,$7,$9
+
+.Loop0: daddiu	$9,$9,-1
+	ld	$12,8($5)
+	daddu	$11,$11,$2
+	ld	$13,8($6)
+	sltu	$8,$11,$2
+	dsubu	$11,$10,$11
+	sltu	$2,$10,$11
+	sd	$11,0($4)
+	or	$2,$2,$8
+
+	daddiu	$5,$5,8
+	daddiu	$6,$6,8
+	move	$10,$12
+	move	$11,$13
+	bne	$9,$0,.Loop0
+	 daddiu $4,$4,8
+
+.L0:	beq	$7,$0,.Lend
+	 nop
+
+.Loop:	daddiu	$7,$7,-4
+
+	ld	$12,8($5)
+	daddu	$11,$11,$2
+	ld	$13,8($6)
+	sltu	$8,$11,$2
+	dsubu	$11,$10,$11
+	sltu	$2,$10,$11
+	sd	$11,0($4)
+	or	$2,$2,$8
+
+	ld	$10,16($5)
+	daddu	$13,$13,$2
+	ld	$11,16($6)
+	sltu	$8,$13,$2
+	dsubu	$13,$12,$13
+	sltu	$2,$12,$13
+	sd	$13,8($4)
+	or	$2,$2,$8
+
+	ld	$12,24($5)
+	daddu	$11,$11,$2
+	ld	$13,24($6)
+	sltu	$8,$11,$2
+	dsubu	$11,$10,$11
+	sltu	$2,$10,$11
+	sd	$11,16($4)
+	or	$2,$2,$8
+
+	ld	$10,32($5)
+	daddu	$13,$13,$2
+	ld	$11,32($6)
+	sltu	$8,$13,$2
+	dsubu	$13,$12,$13
+	sltu	$2,$12,$13
+	sd	$13,24($4)
+	or	$2,$2,$8
+
+	daddiu	$5,$5,32
+	daddiu	$6,$6,32
+
+	bne	$7,$0,.Loop
+	 daddiu $4,$4,32
+
+.Lend:	daddu	$11,$11,$2
+	sltu	$8,$11,$2
+	dsubu	$11,$10,$11
+	sltu	$2,$10,$11
+	sd	$11,0($4)
+	j	$31
+	or	$2,$2,$8
+
+	.end	mpihelp_sub_n
+	n
diff --git a/po/de.po b/po/de.po
index ce6b9b073..3b2eed1ea 100644
--- a/po/de.po
+++ b/po/de.po
@@ -563,10 +563,6 @@ msgstr ""
 "   (1) ElGamal wird empfohlen.\n"
 "   (2) DSA kann nur für Signaturen verwendet werden.\n"
 
-#: g10/keygen.c:305
-msgid "   (3) RSA cannot be used in the U.S.\n"
-msgstr "   (3) RSA darf in den USA nicht benutzt werden\n"
-
 #: g10/keygen.c:314
 msgid "Your selection? (1,2,3) "
 msgstr "Ihre Auswahl? (1,2,3) "
@@ -575,10 +571,6 @@ msgstr "Ihre Auswahl? (1,2,3) "
 msgid "Your selection? (1,2) "
 msgstr "Ihre Auswahl? (1,2) "
 
-#: g10/keygen.c:330
-msgid "Sorry; DSA is not yet supported.\n"
-msgstr "Pardon; DSA wird noch nicht unterstützt.\n"
-
 #: g10/keygen.c:343
 msgid ""
 "About to generate a new %s keypair.\n"
diff --git a/tools/mk-tdata b/tools/mk-tdata
index 85e567d45..85e20d812 100755
--- a/tools/mk-tdata
+++ b/tools/mk-tdata
diff --git a/util/secmem.c b/util/secmem.c
index b1d86ebf1..ab4503db1 100644
--- a/util/secmem.c
+++ b/util/secmem.c
@@ -71,7 +71,7 @@ lock_pool( void *p, size_t n )
     uid_t uid;
     int err;
 
-    err = mlock( p, n );
+    err = -1; mlock( p, n );
     if( err && errno )
 	err = errno;
 
diff --git a/zlib/Makefile b/zlib/Makefile
index e3aa756ed..6f76a64ea 100644
--- a/zlib/Makefile
+++ b/zlib/Makefile
@@ -91,7 +91,7 @@ POSUB = po
 RANLIB = ranlib
 USE_INCLUDED_LIBINTL = yes
 USE_NLS = yes
-VERSION = 0.2.19b
+VERSION = 0.2.19c
 ZLIBS = 
 l = 
 
@@ -121,7 +121,7 @@ LIBRARIES =  $(noinst_LIBRARIES)
 DEFS = -DHAVE_CONFIG_H -I. -I$(srcdir) -I..
 CPPFLAGS = 
 LDFLAGS = 
-LIBS = -ldl -lz
+LIBS = -lz
 libzlib_a_LIBADD = 
 libzlib_a_OBJECTS =  adler32.o compress.o crc32.o gzio.o uncompr.o \
 deflate.o trees.o zutil.o inflate.o infblock.o inftrees.o infcodes.o \