diff options
Diffstat (limited to 'crypto/des/asm/des586.pl')
| -rw-r--r-- | crypto/des/asm/des586.pl | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/crypto/des/asm/des586.pl b/crypto/des/asm/des586.pl new file mode 100644 index 0000000000..59c42d1394 --- /dev/null +++ b/crypto/des/asm/des586.pl @@ -0,0 +1,210 @@ +#!/usr/local/bin/perl +
+$prog="des586.pl";
+
+# base code is in microsft
+# op dest, source
+# format.
+#
+
+# WILL NOT WORK ANYMORE WITH desboth.pl
+require "desboth.pl";
+
+if ( ($ARGV[0] eq "elf"))
+ { require "x86unix.pl"; }
+elsif ( ($ARGV[0] eq "a.out"))
+ { $aout=1; require "x86unix.pl"; }
+elsif ( ($ARGV[0] eq "sol"))
+ { $sol=1; require "x86unix.pl"; }
+elsif ( ($ARGV[0] eq "cpp"))
+ { $cpp=1; require "x86unix.pl"; }
+elsif ( ($ARGV[0] eq "win32"))
+ { require "x86ms.pl"; }
+else
+ {
+ print STDERR <<"EOF";
+Pick one target type from
+ elf - linux, FreeBSD etc
+ a.out - old linux
+ sol - x86 solaris
+ cpp - format so x86unix.cpp can be used
+ win32 - Windows 95/Windows NT
+EOF
+ exit(1);
+ }
+
+&comment("Don't even think of reading this code");
+&comment("It was automatically generated by $prog");
+&comment("Which is a perl program used to generate the x86 assember for");
+&comment("any of elf, a.out, Win32, or Solaris");
+&comment("It can be found in SSLeay 0.6.5+ or in libdes 3.26+");
+&comment("eric <eay\@cryptsoft.com>");
+&comment("");
+
+&file("dx86xxxx");
+
+$L="edi";
+$R="esi";
+
+&des_encrypt("des_encrypt",1);
+&des_encrypt("des_encrypt2",0);
+
+&des_encrypt3("des_encrypt3",1);
+&des_encrypt3("des_decrypt3",0);
+
+&file_end();
+
+sub des_encrypt
+ {
+ local($name,$do_ip)=@_;
+
+ &function_begin($name,3,"EXTRN _des_SPtrans:DWORD");
+
+ &comment("");
+ &comment("Load the 2 words");
+ &mov("eax",&wparam(0));
+ &mov($R,&DWP(0,"eax","",0));
+ &mov($L,&DWP(4,"eax","",0));
+
+ if ($do_ip)
+ {
+ &comment("");
+ &comment("IP");
+ &IP($R,$L,"eax");
+ }
+
+ &comment("");
+ &comment("fixup rotate");
+ &rotl($R,3);
+ &rotl($L,3);
+
+ &comment("");
+ &comment("load counter, key_schedule and enc flag");
+
+ # encrypting part
+
+ $ks="ebp";
+ &xor( "ebx", "ebx" );
+ &mov("eax",&wparam(2)); # get encrypt flag
+ &xor( "ecx", "ecx" );
+ &cmp("eax","0");
+ &mov( $ks, &wparam(1) );
+ &je(&label("start_decrypt"));
+
+ for ($i=0; $i<16; $i+=2)
+ {
+ &comment("");
+ &comment("Round $i");
+ &D_ENCRYPT($i,$L,$R,$i*2,$ks,"des_SPtrans","eax","ebx","ecx","edx");
+
+ &comment("");
+ &comment("Round ".sprintf("%d",$i+1));
+ &D_ENCRYPT($i+1,$R,$L,($i+1)*2,$ks,"des_SPtrans","eax","ebx","ecx","edx");
+ }
+ &jmp(&label("end"));
+
+ &set_label("start_decrypt");
+
+ for ($i=15; $i>0; $i-=2)
+ {
+ &comment("");
+ &comment("Round $i");
+ &D_ENCRYPT(15-$i,$L,$R,$i*2,$ks,"des_SPtrans","eax","ebx","ecx","edx");
+ &comment("");
+ &comment("Round ".sprintf("%d",$i-1));
+ &D_ENCRYPT(15-$i+1,$R,$L,($i-1)*2,$ks,"des_SPtrans","eax","ebx","ecx","edx");
+ }
+
+ &set_label("end");
+
+ &comment("");
+ &comment("Fixup");
+ &rotr($L,3); # r
+ &rotr($R,3); # l
+
+ if ($do_ip)
+ {
+ &comment("");
+ &comment("FP");
+ &FP($R,$L,"eax");
+ }
+
+ &mov("eax",&wparam(0));
+ &mov(&DWP(0,"eax","",0),$L);
+ &mov(&DWP(4,"eax","",0),$R);
+
+ &function_end($name);
+ }
+
+sub D_ENCRYPT
+ {
+ local($r,$L,$R,$S,$ks,$desSP,$u,$tmp1,$tmp2,$t)=@_;
+
+ &mov( $t, &DWP(&n2a(($S+1)*4),$ks,"",0));
+ &mov( $u, &DWP(&n2a($S*4),$ks,"",0));
+ &xor( $t, $R);
+ &xor( $u, $R);
+ &rotr( $t, 4 );
+ &and( $u, "0xfcfcfcfc" );
+ &and( $t, "0xfcfcfcfc" );
+ &movb( &LB($tmp1), &LB($u) );
+ &movb( &LB($tmp2), &HB($u) );
+ &xor( $L, &DWP(" $desSP",$tmp1,"",0));
+ &shr( $u, 16);
+ &xor( $L, &DWP("0x200+$desSP",$tmp2,"",0));
+ &movb( &LB($tmp1), &LB($u) );
+ &movb( &LB($tmp2), &HB($u) );
+ &xor( $L, &DWP("0x400+$desSP",$tmp1,"",0));
+ &mov( $u, &DWP("0x600+$desSP",$tmp2,"",0));
+
+ &movb( &LB($tmp1), &LB($t) );
+ &movb( &LB($tmp2), &HB($t) );
+ &xor( $L, &DWP("0x100+$desSP",$tmp1,"",0));
+ &shr( $t, 16);
+ &xor( $u, &DWP("0x300+$desSP",$tmp2,"",0));
+ &movb( &LB($tmp1), &LB($t) );
+ &movb( &LB($tmp2), &HB($t) );
+ &xor( $L, &DWP("0x500+$desSP",$tmp1,"",0));
+ &xor( $u, &DWP("0x700+$desSP",$tmp2,"",0));
+ &xor( $L, $u);
+ }
+
+sub PERM_OP
+ {
+ local($a,$b,$tt,$shift,$mask)=@_;
+
+ &mov( $tt, $a );
+ &shr( $tt, $shift );
+ &xor( $tt, $b );
+ &and( $tt, $mask );
+ &xor( $b, $tt );
+ &shl( $tt, $shift );
+ &xor( $a, $tt );
+ }
+
+sub IP
+ {
+ local($l,$r,$tt)=@_;
+
+ &PERM_OP($r,$l,$tt, 4,"0x0f0f0f0f");
+ &PERM_OP($l,$r,$tt,16,"0x0000ffff");
+ &PERM_OP($r,$l,$tt, 2,"0x33333333");
+ &PERM_OP($l,$r,$tt, 8,"0x00ff00ff");
+ &PERM_OP($r,$l,$tt, 1,"0x55555555");
+ }
+
+sub FP
+ {
+ local($l,$r,$tt)=@_;
+
+ &PERM_OP($l,$r,$tt, 1,"0x55555555");
+ &PERM_OP($r,$l,$tt, 8,"0x00ff00ff");
+ &PERM_OP($l,$r,$tt, 2,"0x33333333");
+ &PERM_OP($r,$l,$tt,16,"0x0000ffff");
+ &PERM_OP($l,$r,$tt, 4,"0x0f0f0f0f");
+ }
+
+sub n2a
+ {
+ sprintf("%d",$_[0]);
+ }
|