diff options
Diffstat (limited to 'crypto/libdes/asm/des586.pl')
| -rw-r--r-- | crypto/libdes/asm/des586.pl | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/crypto/libdes/asm/des586.pl b/crypto/libdes/asm/des586.pl new file mode 100644 index 0000000..c2bee84 --- /dev/null +++ b/crypto/libdes/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 $prog"); +&comment("Which is a perl program used to generate the x86 assember for"); +&comment("any of elf, a.out, Win32, or Solaris"); +&comment("It can be found in SSLeay 0.6.5+ or in libdes 3.26+"); +&comment("eric <eay\@mincom.oz.au>"); +&comment(""); + +&file("dx86xxxx"); + +$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); + + &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]); + } |
