diff options
Diffstat (limited to 'linux/crypto/ciphers/des/asm/des-586.pl')
| -rw-r--r-- | linux/crypto/ciphers/des/asm/des-586.pl | 251 |
1 files changed, 0 insertions, 251 deletions
diff --git a/linux/crypto/ciphers/des/asm/des-586.pl b/linux/crypto/ciphers/des/asm/des-586.pl deleted file mode 100644 index 7f2e09fa7..000000000 --- a/linux/crypto/ciphers/des/asm/des-586.pl +++ /dev/null @@ -1,251 +0,0 @@ -#!/usr/bin/perl -# -# The inner loop instruction sequence and the IP/FP modifications are from -# Svend Olaf Mikkelsen <svolaf@inet.uni-c.dk> -# - -push(@INC,"perlasm","../../perlasm"); -require "x86asm.pl"; -require "cbc.pl"; -require "desboth.pl"; - -# base code is in microsft -# op dest, source -# format. -# - -&asm_init($ARGV[0],"des-586.pl"); - -$L="edi"; -$R="esi"; - -&external_label("des_SPtrans"); -&des_encrypt("des_encrypt",1); -&des_encrypt("des_encrypt2",0); -&des_encrypt3("des_encrypt3",1); -&des_encrypt3("des_decrypt3",0); -&cbc("des_ncbc_encrypt","des_encrypt","des_encrypt",0,4,5,3,5,-1); -&cbc("des_ede3_cbc_encrypt","des_encrypt3","des_decrypt3",0,6,7,3,4,5); - -&asm_finish(); - -sub des_encrypt - { - local($name,$do_ip)=@_; - - &function_begin_B($name,"EXTRN _des_SPtrans:DWORD"); - - &push("esi"); - &push("edi"); - - &comment(""); - &comment("Load the 2 words"); - $ks="ebp"; - - if ($do_ip) - { - &mov($R,&wparam(0)); - &xor( "ecx", "ecx" ); - - &push("ebx"); - &push("ebp"); - - &mov("eax",&DWP(0,$R,"",0)); - &mov("ebx",&wparam(2)); # get encrypt flag - &mov($L,&DWP(4,$R,"",0)); - &comment(""); - &comment("IP"); - &IP_new("eax",$L,$R,3); - } - else - { - &mov("eax",&wparam(0)); - &xor( "ecx", "ecx" ); - - &push("ebx"); - &push("ebp"); - - &mov($R,&DWP(0,"eax","",0)); - &mov("ebx",&wparam(2)); # get encrypt flag - &rotl($R,3); - &mov($L,&DWP(4,"eax","",0)); - &rotl($L,3); - } - - &mov( $ks, &wparam(1) ); - &cmp("ebx","0"); - &je(&label("start_decrypt")); - - for ($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"); - - if ($do_ip) - { - &comment(""); - &comment("FP"); - &mov("edx",&wparam(0)); - &FP_new($L,$R,"eax",3); - - &mov(&DWP(0,"edx","",0),"eax"); - &mov(&DWP(4,"edx","",0),$R); - } - else - { - &comment(""); - &comment("Fixup"); - &rotr($L,3); # r - &mov("eax",&wparam(0)); - &rotr($R,3); # l - &mov(&DWP(0,"eax","",0),$L); - &mov(&DWP(4,"eax","",0),$R); - } - - &pop("ebp"); - &pop("ebx"); - &pop("edi"); - &pop("esi"); - &ret(); - - &function_end_B($name); - } - -sub D_ENCRYPT - { - local($r,$L,$R,$S,$ks,$desSP,$u,$tmp1,$tmp2,$t)=@_; - - &mov( $u, &DWP(&n2a($S*4),$ks,"",0)); - &xor( $tmp1, $tmp1); - &mov( $t, &DWP(&n2a(($S+1)*4),$ks,"",0)); - &xor( $u, $R); - &xor( $t, $R); - &and( $u, "0xfcfcfcfc" ); - &and( $t, "0xcfcfcfcf" ); - &movb( &LB($tmp1), &LB($u) ); - &movb( &LB($tmp2), &HB($u) ); - &rotr( $t, 4 ); - &mov( $ks, &DWP(" $desSP",$tmp1,"",0)); - &movb( &LB($tmp1), &LB($t) ); - &xor( $L, $ks); - &mov( $ks, &DWP("0x200+$desSP",$tmp2,"",0)); - &xor( $L, $ks); ###### - &movb( &LB($tmp2), &HB($t) ); - &shr( $u, 16); - &mov( $ks, &DWP("0x100+$desSP",$tmp1,"",0)); - &xor( $L, $ks); ###### - &movb( &LB($tmp1), &HB($u) ); - &shr( $t, 16); - &mov( $ks, &DWP("0x300+$desSP",$tmp2,"",0)); - &xor( $L, $ks); - &mov( $ks, &wparam(1) ); - &movb( &LB($tmp2), &HB($t) ); - &and( $u, "0xff" ); - &and( $t, "0xff" ); - &mov( $tmp1, &DWP("0x600+$desSP",$tmp1,"",0)); - &xor( $L, $tmp1); - &mov( $tmp1, &DWP("0x700+$desSP",$tmp2,"",0)); - &xor( $L, $tmp1); - &mov( $tmp1, &DWP("0x400+$desSP",$u,"",0)); - &xor( $L, $tmp1); - &mov( $tmp1, &DWP("0x500+$desSP",$t,"",0)); - &xor( $L, $tmp1); - } - -sub n2a - { - sprintf("%d",$_[0]); - } - -# now has a side affect of rotating $a by $shift -sub R_PERM_OP - { - local($a,$b,$tt,$shift,$mask,$last)=@_; - - &rotl( $a, $shift ) if ($shift != 0); - &mov( $tt, $a ); - &xor( $a, $b ); - &and( $a, $mask ); - if (!$last eq $b) - { - &xor( $b, $a ); - &xor( $tt, $a ); - } - else - { - &xor( $tt, $a ); - &xor( $b, $a ); - } - &comment(""); - } - -sub IP_new - { - local($l,$r,$tt,$lr)=@_; - - &R_PERM_OP($l,$r,$tt, 4,"0xf0f0f0f0",$l); - &R_PERM_OP($r,$tt,$l,20,"0xfff0000f",$l); - &R_PERM_OP($l,$tt,$r,14,"0x33333333",$r); - &R_PERM_OP($tt,$r,$l,22,"0x03fc03fc",$r); - &R_PERM_OP($l,$r,$tt, 9,"0xaaaaaaaa",$r); - - if ($lr != 3) - { - if (($lr-3) < 0) - { &rotr($tt, 3-$lr); } - else { &rotl($tt, $lr-3); } - } - if ($lr != 2) - { - if (($lr-2) < 0) - { &rotr($r, 2-$lr); } - else { &rotl($r, $lr-2); } - } - } - -sub FP_new - { - local($l,$r,$tt,$lr)=@_; - - if ($lr != 2) - { - if (($lr-2) < 0) - { &rotl($r, 2-$lr); } - else { &rotr($r, $lr-2); } - } - if ($lr != 3) - { - if (($lr-3) < 0) - { &rotl($l, 3-$lr); } - else { &rotr($l, $lr-3); } - } - - &R_PERM_OP($l,$r,$tt, 0,"0xaaaaaaaa",$r); - &R_PERM_OP($tt,$r,$l,23,"0x03fc03fc",$r); - &R_PERM_OP($l,$r,$tt,10,"0x33333333",$l); - &R_PERM_OP($r,$tt,$l,18,"0xfff0000f",$l); - &R_PERM_OP($l,$tt,$r,12,"0xf0f0f0f0",$r); - &rotr($tt , 4); - } - |