]> WPIA git - cassiopeia.git/blobdiff - lib/openssl/crypto/bf/asm/bf-586.pl
add: execute openssl fetcher to fetch openssl 1.0.1j
[cassiopeia.git] / lib / openssl / crypto / bf / asm / bf-586.pl
diff --git a/lib/openssl/crypto/bf/asm/bf-586.pl b/lib/openssl/crypto/bf/asm/bf-586.pl
new file mode 100644 (file)
index 0000000..b74cfba
--- /dev/null
@@ -0,0 +1,137 @@
+#!/usr/local/bin/perl
+
+$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
+push(@INC,"${dir}","${dir}../../perlasm");
+require "x86asm.pl";
+require "cbc.pl";
+
+&asm_init($ARGV[0],"bf-586.pl",$ARGV[$#ARGV] eq "386");
+
+$BF_ROUNDS=16;
+$BF_OFF=($BF_ROUNDS+2)*4;
+$L="edi";
+$R="esi";
+$P="ebp";
+$tmp1="eax";
+$tmp2="ebx";
+$tmp3="ecx";
+$tmp4="edx";
+
+&BF_encrypt("BF_encrypt",1);
+&BF_encrypt("BF_decrypt",0);
+&cbc("BF_cbc_encrypt","BF_encrypt","BF_decrypt",1,4,5,3,-1,-1);
+&asm_finish();
+
+sub BF_encrypt
+       {
+       local($name,$enc)=@_;
+
+       &function_begin_B($name,"");
+
+       &comment("");
+
+       &push("ebp");
+       &push("ebx");
+       &mov($tmp2,&wparam(0));
+       &mov($P,&wparam(1));
+       &push("esi");
+       &push("edi");
+
+       &comment("Load the 2 words");
+       &mov($L,&DWP(0,$tmp2,"",0));
+       &mov($R,&DWP(4,$tmp2,"",0));
+
+       &xor(   $tmp1,  $tmp1);
+
+       # encrypting part
+
+       if ($enc)
+               {
+                &mov($tmp2,&DWP(0,$P,"",0));
+               &xor(   $tmp3,  $tmp3);
+
+               &xor($L,$tmp2);
+               for ($i=0; $i<$BF_ROUNDS; $i+=2)
+                       {
+                       &comment("");
+                       &comment("Round $i");
+                       &BF_ENCRYPT($i+1,$R,$L,$P,$tmp1,$tmp2,$tmp3,$tmp4,1);
+
+                       &comment("");
+                       &comment("Round ".sprintf("%d",$i+1));
+                       &BF_ENCRYPT($i+2,$L,$R,$P,$tmp1,$tmp2,$tmp3,$tmp4,1);
+                       }
+               # &mov($tmp1,&wparam(0)); In last loop
+               &mov($tmp4,&DWP(($BF_ROUNDS+1)*4,$P,"",0));
+               }
+       else
+               {
+                &mov($tmp2,&DWP(($BF_ROUNDS+1)*4,$P,"",0));
+               &xor(   $tmp3,  $tmp3);
+
+               &xor($L,$tmp2);
+               for ($i=$BF_ROUNDS; $i>0; $i-=2)
+                       {
+                       &comment("");
+                       &comment("Round $i");
+                       &BF_ENCRYPT($i,$R,$L,$P,$tmp1,$tmp2,$tmp3,$tmp4,0);
+                       &comment("");
+                       &comment("Round ".sprintf("%d",$i-1));
+                       &BF_ENCRYPT($i-1,$L,$R,$P,$tmp1,$tmp2,$tmp3,$tmp4,0);
+                       }
+               # &mov($tmp1,&wparam(0)); In last loop
+               &mov($tmp4,&DWP(0,$P,"",0));
+               }
+
+       &xor($R,$tmp4);
+       &mov(&DWP(4,$tmp1,"",0),$L);
+
+       &mov(&DWP(0,$tmp1,"",0),$R);
+       &function_end($name);
+       }
+
+sub BF_ENCRYPT
+       {
+       local($i,$L,$R,$P,$tmp1,$tmp2,$tmp3,$tmp4,$enc)=@_;
+
+       &mov(   $tmp4,          &DWP(&n2a($i*4),$P,"",0)); # for next round
+
+       &mov(   $tmp2,          $R);
+       &xor(   $L,             $tmp4);
+
+       &shr(   $tmp2,          16);
+       &mov(   $tmp4,          $R);
+
+       &movb(  &LB($tmp1),     &HB($tmp2));    # A
+       &and(   $tmp2,          0xff);          # B
+
+       &movb(  &LB($tmp3),     &HB($tmp4));    # C
+       &and(   $tmp4,          0xff);          # D
+
+       &mov(   $tmp1,          &DWP(&n2a($BF_OFF+0x0000),$P,$tmp1,4));
+       &mov(   $tmp2,          &DWP(&n2a($BF_OFF+0x0400),$P,$tmp2,4));
+
+       &add(   $tmp2,          $tmp1);
+       &mov(   $tmp1,          &DWP(&n2a($BF_OFF+0x0800),$P,$tmp3,4));
+
+       &xor(   $tmp2,          $tmp1);
+       &mov(   $tmp4,          &DWP(&n2a($BF_OFF+0x0C00),$P,$tmp4,4));
+
+       &add(   $tmp2,          $tmp4);
+       if (($enc && ($i != 16)) || ((!$enc) && ($i != 1)))
+               { &xor( $tmp1,          $tmp1); }
+       else
+               {
+               &comment("Load parameter 0 ($i) enc=$enc");
+               &mov($tmp1,&wparam(0));
+               } # In last loop
+
+       &xor(   $L,             $tmp2);
+       # delay
+       }
+
+sub n2a
+       {
+       sprintf("%d",$_[0]);
+       }
+