]> WPIA git - cassiopeia.git/blobdiff - lib/openssl/crypto/bf/asm/bf-686.pl
add: execute openssl fetcher to fetch openssl 1.0.1j
[cassiopeia.git] / lib / openssl / crypto / bf / asm / bf-686.pl
diff --git a/lib/openssl/crypto/bf/asm/bf-686.pl b/lib/openssl/crypto/bf/asm/bf-686.pl
new file mode 100644 (file)
index 0000000..8e4c25f
--- /dev/null
@@ -0,0 +1,127 @@
+#!/usr/local/bin/perl
+
+push(@INC,"perlasm","../../perlasm");
+require "x86asm.pl";
+require "cbc.pl";
+
+&asm_init($ARGV[0],"bf-686.pl");
+
+$BF_ROUNDS=16;
+$BF_OFF=($BF_ROUNDS+2)*4;
+$L="ecx";
+$R="edx";
+$P="edi";
+$tot="esi";
+$tmp1="eax";
+$tmp2="ebx";
+$tmp3="ebp";
+
+&des_encrypt("BF_encrypt",1);
+&des_encrypt("BF_decrypt",0);
+&cbc("BF_cbc_encrypt","BF_encrypt","BF_decrypt",1,4,5,3,-1,-1);
+
+&asm_finish();
+
+&file_end();
+
+sub des_encrypt
+       {
+       local($name,$enc)=@_;
+
+       &function_begin($name,"");
+
+       &comment("");
+       &comment("Load the 2 words");
+       &mov("eax",&wparam(0));
+       &mov($L,&DWP(0,"eax","",0));
+       &mov($R,&DWP(4,"eax","",0));
+
+       &comment("");
+       &comment("P pointer, s and enc flag");
+       &mov($P,&wparam(1));
+
+       &xor(   $tmp1,  $tmp1);
+       &xor(   $tmp2,  $tmp2);
+
+       # encrypting part
+
+       if ($enc)
+               {
+               &xor($L,&DWP(0,$P,"",0));
+               for ($i=0; $i<$BF_ROUNDS; $i+=2)
+                       {
+                       &comment("");
+                       &comment("Round $i");
+                       &BF_ENCRYPT($i+1,$R,$L,$P,$tot,$tmp1,$tmp2,$tmp3);
+
+                       &comment("");
+                       &comment("Round ".sprintf("%d",$i+1));
+                       &BF_ENCRYPT($i+2,$L,$R,$P,$tot,$tmp1,$tmp2,$tmp3);
+                       }
+               &xor($R,&DWP(($BF_ROUNDS+1)*4,$P,"",0));
+
+               &mov("eax",&wparam(0));
+               &mov(&DWP(0,"eax","",0),$R);
+               &mov(&DWP(4,"eax","",0),$L);
+               &function_end_A($name);
+               }
+       else
+               {
+               &xor($L,&DWP(($BF_ROUNDS+1)*4,$P,"",0));
+               for ($i=$BF_ROUNDS; $i>0; $i-=2)
+                       {
+                       &comment("");
+                       &comment("Round $i");
+                       &BF_ENCRYPT($i,$R,$L,$P,$tot,$tmp1,$tmp2,$tmp3);
+                       &comment("");
+                       &comment("Round ".sprintf("%d",$i-1));
+                       &BF_ENCRYPT($i-1,$L,$R,$P,$tot,$tmp1,$tmp2,$tmp3);
+                       }
+               &xor($R,&DWP(0,$P,"",0));
+
+               &mov("eax",&wparam(0));
+               &mov(&DWP(0,"eax","",0),$R);
+               &mov(&DWP(4,"eax","",0),$L);
+               &function_end_A($name);
+               }
+
+       &function_end_B($name);
+       }
+
+sub BF_ENCRYPT
+       {
+       local($i,$L,$R,$P,$tot,$tmp1,$tmp2,$tmp3)=@_;
+
+       &rotr(  $R,             16);
+       &mov(   $tot,           &DWP(&n2a($i*4),$P,"",0));
+
+       &movb(  &LB($tmp1),     &HB($R));
+       &movb(  &LB($tmp2),     &LB($R));
+
+       &rotr(  $R,             16);
+       &xor(   $L,             $tot);
+
+       &mov(   $tot,           &DWP(&n2a($BF_OFF+0x0000),$P,$tmp1,4));
+       &mov(   $tmp3,          &DWP(&n2a($BF_OFF+0x0400),$P,$tmp2,4));
+
+       &movb(  &LB($tmp1),     &HB($R));
+       &movb(  &LB($tmp2),     &LB($R));
+
+       &add(   $tot,           $tmp3);
+       &mov(   $tmp1,          &DWP(&n2a($BF_OFF+0x0800),$P,$tmp1,4)); # delay
+
+       &xor(   $tot,           $tmp1);
+       &mov(   $tmp3,          &DWP(&n2a($BF_OFF+0x0C00),$P,$tmp2,4));
+
+       &add(   $tot,           $tmp3);
+       &xor(   $tmp1,          $tmp1);
+
+       &xor(   $L,             $tot);                                  
+       # delay
+       }
+
+sub n2a
+       {
+       sprintf("%d",$_[0]);
+       }
+