Avoid aliasing between stack frames and S-boxes. Compress prefetch code.
This commit is contained in:
Andy Polyakov
parent
00df894701
commit
04d0d0accf
@ -6,7 +6,7 @@
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# forms are granted according to the OpenSSL license.
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# ====================================================================
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#
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# Version 3.2.
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# Version 3.3.
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#
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# You might fail to appreciate this module performance from the first
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# try. If compared to "vanilla" linux-ia32-icc target, i.e. considered
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@ -104,9 +104,9 @@ sub encvert()
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my $v0 = $acc, $v1 = $key;
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&mov ($v0,$s[3]); # copy s3
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&mov (&DWP(0,"esp"),$s[2]); # save s2
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&mov (&DWP(4,"esp"),$s[2]); # save s2
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&mov ($v1,$s[0]); # copy s0
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&mov (&DWP(4,"esp"),$s[1]); # save s1
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&mov (&DWP(8,"esp"),$s[1]); # save s1
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&movz ($s[2],&HB($s[0]));
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&and ($s[0],0xFF);
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@ -127,7 +127,7 @@ sub encvert()
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&movz ($v0,&HB($v1));
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&and ($v1,0xFF);
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&xor ($s[1],&DWP(2,$te,$v1,8)); # s3>>16
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&mov ($v1,&DWP(0,"esp")); # restore s2
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&mov ($v1,&DWP(4,"esp")); # restore s2
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&xor ($s[0],&DWP(1,$te,$v0,8)); # s3>>24
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&mov ($v0,$v1);
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@ -139,7 +139,7 @@ sub encvert()
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&movz ($v1,&HB($v0));
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&and ($v0,0xFF);
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&xor ($s[0],&DWP(2,$te,$v0,8)); # s2>>16
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&mov ($v0,&DWP(4,"esp")); # restore s1
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&mov ($v0,&DWP(8,"esp")); # restore s1
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&xor ($s[3],&DWP(1,$te,$v1,8)); # s2>>24
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&mov ($v1,$v0);
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@ -172,19 +172,19 @@ sub encstep()
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&movz ($tmp,&HB($s[1]));
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&xor ($out,&DWP(3,$te,$tmp,8));
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if ($i==3) { $tmp=$s[2]; &mov ($s[1],&DWP(0,"esp")); }##%ebx
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if ($i==3) { $tmp=$s[2]; &mov ($s[1],&DWP(4,"esp")); }##%ebx
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else { &mov ($tmp,$s[2]);
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&shr ($tmp,16); }
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if ($i==2) { &and ($s[1],0xFF); }#%edx[2]
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&and ($tmp,0xFF);
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&xor ($out,&DWP(2,$te,$tmp,8));
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if ($i==3) { $tmp=$s[3]; &mov ($s[2],&DWP(4,"esp")); }##%ecx
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if ($i==3) { $tmp=$s[3]; &mov ($s[2],&DWP(8,"esp")); }##%ecx
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elsif($i==2){ &movz ($tmp,&HB($s[3])); }#%ebx[2]
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else { &mov ($tmp,$s[3]);
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&shr ($tmp,24) }
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&xor ($out,&DWP(1,$te,$tmp,8));
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if ($i<2) { &mov (&DWP(4*$i,"esp"),$out); }
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if ($i<2) { &mov (&DWP(4+4*$i,"esp"),$out); }
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if ($i==3) { &mov ($s[3],$acc); }
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&comment();
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}
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@ -208,7 +208,7 @@ sub enclast()
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&and ($tmp,0x0000ff00);
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&xor ($out,$tmp);
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if ($i==3) { $tmp=$s[2]; &mov ($s[1],&DWP(0,"esp")); }##%ebx
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if ($i==3) { $tmp=$s[2]; &mov ($s[1],&DWP(4,"esp")); }##%ebx
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else { mov ($tmp,$s[2]);
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&shr ($tmp,16); }
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if ($i==2) { &and ($s[1],0xFF); }#%edx[2]
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@ -217,14 +217,14 @@ sub enclast()
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&and ($tmp,0x00ff0000);
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&xor ($out,$tmp);
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if ($i==3) { $tmp=$s[3]; &mov ($s[2],&DWP(4,"esp")); }##%ecx
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if ($i==3) { $tmp=$s[3]; &mov ($s[2],&DWP(8,"esp")); }##%ecx
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elsif($i==2){ &movz ($tmp,&HB($s[3])); }#%ebx[2]
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else { &mov ($tmp,$s[3]);
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&shr ($tmp,24); }
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&mov ($tmp,&DWP(2,$te,$tmp,8));
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&and ($tmp,0xff000000);
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&xor ($out,$tmp);
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if ($i<2) { &mov (&DWP(4*$i,"esp"),$out); }
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if ($i<2) { &mov (&DWP(4+4*$i,"esp"),$out); }
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if ($i==3) { &mov ($s[3],$acc); }
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}
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@ -238,13 +238,8 @@ sub _data_word() { my $i; while(defined($i=shift)) { &data_word($i,$i); } }
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&mov ($s2="esi",$acc="ecx");
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}
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# allocate aligned stack frame
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&mov ($acc,"esp");
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&sub ("esp",20);
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&and ("esp",-16);
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# note that caller is expected to allocate stack frame for me!
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&mov (&DWP(12,"esp"),$key); # save key
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&mov (&DWP(16,"esp"),$acc); # save %esp
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&xor ($s0,&DWP(0,$key)); # xor with key
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&xor ($s1,&DWP(4,$key));
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@ -256,7 +251,7 @@ sub _data_word() { my $i; while(defined($i=shift)) { &data_word($i,$i); } }
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if ($small_footprint) {
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&lea ($acc,&DWP(-2,$acc,$acc));
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&lea ($acc,&DWP(0,$key,$acc,8));
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&mov (&DWP(8,"esp"),$acc); # end of key schedule
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&mov (&DWP(16,"esp"),$acc); # end of key schedule
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&align (4);
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&set_label("loop");
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if ($vertical_spin) {
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@ -267,12 +262,12 @@ sub _data_word() { my $i; while(defined($i=shift)) { &data_word($i,$i); } }
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&encstep(2,"ebp",$s2,$s3,$s0,$s1);
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&encstep(3,"ebp",$s3,$s0,$s1,$s2);
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}
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&add ($key,16); # advance rd_key
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&add ($key,16); # advance rd_key
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&xor ($s0,&DWP(0,$key));
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&xor ($s1,&DWP(4,$key));
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&xor ($s2,&DWP(8,$key));
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&xor ($s3,&DWP(12,$key));
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&cmp ($key,&DWP(8,"esp"));
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&cmp ($key,&DWP(16,"esp"));
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&mov (&DWP(12,"esp"),$key);
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&jb (&label("loop"));
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}
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@ -298,7 +293,7 @@ sub _data_word() { my $i; while(defined($i=shift)) { &data_word($i,$i); } }
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&xor ($s3,&DWP(16*$i+12,$key));
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}
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&add ($key,32);
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&mov (&DWP(12,"esp"),$key); # advance rd_key
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&mov (&DWP(12,"esp"),$key); # advance rd_key
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&set_label("12rounds");
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for ($i=1;$i<3;$i++) {
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if ($vertical_spin) {
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@ -315,7 +310,7 @@ sub _data_word() { my $i; while(defined($i=shift)) { &data_word($i,$i); } }
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&xor ($s3,&DWP(16*$i+12,$key));
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}
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&add ($key,32);
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&mov (&DWP(12,"esp"),$key); # advance rd_key
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&mov (&DWP(12,"esp"),$key); # advance rd_key
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&set_label("10rounds");
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for ($i=1;$i<10;$i++) {
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if ($vertical_spin) {
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@ -343,7 +338,6 @@ sub _data_word() { my $i; while(defined($i=shift)) { &data_word($i,$i); } }
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&enclast(2,"ebp",$s2,$s3,$s0,$s1);
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&enclast(3,"ebp",$s3,$s0,$s1,$s2);
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&mov ("esp",&DWP(16,"esp")); # restore %esp
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&add ($key,$small_footprint?16:160);
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&xor ($s0,&DWP(0,$key));
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&xor ($s1,&DWP(4,$key));
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@ -429,6 +423,12 @@ sub _data_word() { my $i; while(defined($i=shift)) { &data_word($i,$i); } }
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&mov ($acc,&wparam(0)); # load inp
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&mov ($key,&wparam(2)); # load key
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&mov ($s0,"esp");
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&sub ("esp",24);
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&and ("esp",-64);
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&add ("esp",4);
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&mov (&DWP(16,"esp"),$s0);
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&call (&label("pic_point")); # make it PIC!
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&set_label("pic_point");
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&blindpop("ebp");
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@ -441,6 +441,8 @@ sub _data_word() { my $i; while(defined($i=shift)) { &data_word($i,$i); } }
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&call ("_x86_AES_encrypt");
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&mov ("esp",&DWP(16,"esp"));
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&mov ($acc,&wparam(1)); # load out
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&mov (&DWP(0,$acc),$s0); # write output data
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&mov (&DWP(4,$acc),$s1);
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@ -474,12 +476,12 @@ sub decstep()
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&and ($tmp,0xFF);
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&xor ($out,&DWP(2,$td,$tmp,8));
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if ($i==3) { $tmp=$s[3]; &mov ($s[2],&DWP(4,"esp")); }
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if ($i==3) { $tmp=$s[3]; &mov ($s[2],&DWP(8,"esp")); }
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else { &mov ($tmp,$s[3]); }
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&shr ($tmp,24);
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&xor ($out,&DWP(1,$td,$tmp,8));
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if ($i<2) { &mov (&DWP(4*$i,"esp"),$out); }
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if ($i==3) { &mov ($s[3],&DWP(0,"esp")); }
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if ($i<2) { &mov (&DWP(4+4*$i,"esp"),$out); }
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if ($i==3) { &mov ($s[3],&DWP(4,"esp")); }
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&comment();
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}
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@ -508,25 +510,20 @@ sub declast()
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&and ($tmp,0x00ff0000);
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&xor ($out,$tmp);
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if ($i==3) { $tmp=$s[3]; &mov ($s[2],&DWP(4,"esp")); }
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if ($i==3) { $tmp=$s[3]; &mov ($s[2],&DWP(8,"esp")); }
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else { &mov ($tmp,$s[3]); }
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&shr ($tmp,24);
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&mov ($tmp,&DWP(2048,$td,$tmp,4));
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&and ($tmp,0xff000000);
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&xor ($out,$tmp);
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if ($i<2) { &mov (&DWP(4*$i,"esp"),$out); }
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if ($i==3) { &mov ($s[3],&DWP(0,"esp")); }
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if ($i<2) { &mov (&DWP(4+4*$i,"esp"),$out); }
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if ($i==3) { &mov ($s[3],&DWP(4,"esp")); }
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}
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&public_label("AES_Td");
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&function_begin_B("_x86_AES_decrypt");
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# allocate aligned stack frame
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&mov ($acc,"esp");
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&sub ("esp",20);
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&and ("esp",-16);
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# note that caller is expected to allocate stack frame for me!
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&mov (&DWP(12,"esp"),$key); # save key
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&mov (&DWP(16,"esp"),$acc); # save %esp
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&xor ($s0,&DWP(0,$key)); # xor with key
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&xor ($s1,&DWP(4,$key));
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@ -538,19 +535,19 @@ sub declast()
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if ($small_footprint) {
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&lea ($acc,&DWP(-2,$acc,$acc));
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&lea ($acc,&DWP(0,$key,$acc,8));
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&mov (&DWP(8,"esp"),$acc); # end of key schedule
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&mov (&DWP(16,"esp"),$acc); # end of key schedule
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&align (4);
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&set_label("loop");
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&decstep(0,"ebp",$s0,$s3,$s2,$s1);
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&decstep(1,"ebp",$s1,$s0,$s3,$s2);
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&decstep(2,"ebp",$s2,$s1,$s0,$s3);
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&decstep(3,"ebp",$s3,$s2,$s1,$s0);
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&add ($key,16); # advance rd_key
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&add ($key,16); # advance rd_key
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&xor ($s0,&DWP(0,$key));
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&xor ($s1,&DWP(4,$key));
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&xor ($s2,&DWP(8,$key));
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&xor ($s3,&DWP(12,$key));
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&cmp ($key,&DWP(8,"esp"));
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&cmp ($key,&DWP(16,"esp"));
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&mov (&DWP(12,"esp"),$key);
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&jb (&label("loop"));
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}
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@ -572,7 +569,7 @@ sub declast()
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&xor ($s3,&DWP(16*$i+12,$key));
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}
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&add ($key,32);
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&mov (&DWP(12,"esp"),$key); # advance rd_key
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&mov (&DWP(12,"esp"),$key); # advance rd_key
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&set_label("12rounds");
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for ($i=1;$i<3;$i++) {
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&decstep(0,"ebp",$s0,$s3,$s2,$s1);
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@ -585,7 +582,7 @@ sub declast()
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&xor ($s3,&DWP(16*$i+12,$key));
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}
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&add ($key,32);
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&mov (&DWP(12,"esp"),$key); # advance rd_key
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&mov (&DWP(12,"esp"),$key); # advance rd_key
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&set_label("10rounds");
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for ($i=1;$i<10;$i++) {
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&decstep(0,"ebp",$s0,$s3,$s2,$s1);
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@ -604,7 +601,6 @@ sub declast()
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&declast(2,"ebp",$s2,$s1,$s0,$s3);
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&declast(3,"ebp",$s3,$s2,$s1,$s0);
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&mov ("esp",&DWP(16,"esp")); # restore %esp
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&add ($key,$small_footprint?16:160);
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&xor ($s0,&DWP(0,$key));
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&xor ($s1,&DWP(4,$key));
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@ -751,6 +747,12 @@ sub declast()
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&mov ($acc,&wparam(0)); # load inp
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&mov ($key,&wparam(2)); # load key
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&mov ($s0,"esp");
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&sub ("esp",24);
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&and ("esp",-64);
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&add ("esp",4);
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&mov (&DWP(16,"esp"),$s0);
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&call (&label("pic_point")); # make it PIC!
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&set_label("pic_point");
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&blindpop("ebp");
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@ -763,6 +765,8 @@ sub declast()
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&call ("_x86_AES_decrypt");
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&mov ("esp",&DWP(16,"esp"));
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&mov ($acc,&wparam(1)); # load out
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&mov (&DWP(0,$acc),$s0); # write output data
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&mov (&DWP(4,$acc),$s1);
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@ -773,6 +777,22 @@ sub declast()
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# void AES_cbc_encrypt (const void char *inp, unsigned char *out,
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# size_t length, const AES_KEY *key,
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# unsigned char *ivp,const int enc);
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{
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# stack frame layout
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# -4(%esp) 0(%esp) return address
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# 0(%esp) 4(%esp) tmp1
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# 4(%esp) 8(%esp) tmp2
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# 8(%esp) 12(%esp) key
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# 12(%esp) 16(%esp) end of key schedule
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my $_esp=&DWP(16,"esp"); #saved %esp
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my $_inp=&DWP(20,"esp"); #copy of wparam(0)
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my $_out=&DWP(24,"esp"); #copy of wparam(1)
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my $_len=&DWP(28,"esp"); #copy of wparam(2)
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my $_key=&DWP(32,"esp"); #copy of wparam(3)
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my $_ivp=&DWP(36,"esp"); #copy of wparam(4)
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my $_tmp=&DWP(40,"esp"); #volatile variable
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my $ivec=&DWP(44,"esp"); #ivec[16]
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&public_label("AES_Te");
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&public_label("AES_Td");
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&function_begin("AES_cbc_encrypt");
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@ -780,7 +800,7 @@ sub declast()
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&cmp ($s2,0);
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&je (&label("enc_out"));
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&call (&label("pic_point")); # make it PIC!
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&call (&label("pic_point")); # make it PIC!
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&set_label("pic_point");
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&blindpop("ebp");
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@ -789,20 +809,58 @@ sub declast()
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&lea ("ebp",&DWP(&label("AES_Te")."-".&label("pic_point"),"ebp"));
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&mov ($acc,&wparam(0)); # load inp
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&mov ($key,&wparam(4)); # load ivp
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# allocate aligned stack frame...
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&lea ($key,&DWP(-44,"esp"));
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&and ($key,-64);
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# ... and make sure it doesn't alias with AES_Te modulo 4096
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&mov ($s1,"ebp");
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&mov ($s3,$key);
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&and ($s1,0xfff); # t = %ebp&0xfff
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&and ($s3,0xfff); # p = %esp&0xfff
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&cmp ($s3,$s1); # if (p<t) goto ok
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&jb (&label("te_ok"));
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&lea ($acc,&DWP(2048,$s1));
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&cmp ($s3,$acc); # if (p>=(t+2048)) goto ok
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&jae (&label("te_ok"));
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&sub ($s1,$s3); # t -= p
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&lea ($key,&DWP(-64,$key,$s1));# %esp -= (p-t)+64
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&set_label("te_ok");
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&mov ($s0,&wparam(0)); # load inp
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&mov ($s1,&wparam(1)); # load out
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&mov ($s3,&wparam(3)); # load key
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&mov ($acc,&wparam(4)); # load ivp
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&exch ("esp",$key);
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&add ("esp",4); # reserve for return address!
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&mov ($_esp,$key); # save %esp
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&mov ($_inp,$s0); # save copy of inp
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&mov ($_out,$s1); # save copy of out
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&mov ($_len,$s2); # save copy of len
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&mov ($_key,$s3); # save copy of key
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&mov ($_ivp,$acc); # save copy of ivp
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&mov ($acc,$s0);
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&mov ($key,16);
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&align (4);
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&set_label("prefetch_te");
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&mov ($s0,&DWP(0,"ebp"));
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&mov ($s1,&DWP(32,"ebp"));
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&mov ($s2,&DWP(64,"ebp"));
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&mov ($s3,&DWP(96,"ebp"));
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&lea ("ebp",&DWP(128,"ebp"));
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&dec ($key);
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&jnz (&label("prefetch_te"));
|
||||
&sub ("ebp",2048);
|
||||
|
||||
&mov ($s2,$_len);
|
||||
&mov ($key,$_ivp);
|
||||
&test ($s2,0xFFFFFFF0);
|
||||
&jz (&label("enc_tail")); # short input...
|
||||
|
||||
# prefetch AES_Te
|
||||
for ($i=0;$i<2048;$i+=128)
|
||||
{ &mov ($s0,&DWP($i+0,"ebp"));
|
||||
&mov ($s1,&DWP($i+32,"ebp"));
|
||||
&mov ($s2,&DWP($i+64,"ebp"));
|
||||
&mov ($s3,&DWP($i+96,"ebp"));
|
||||
}
|
||||
|
||||
&mov ($s0,&DWP(0,$key)); # load iv
|
||||
&mov ($s1,&DWP(4,$key));
|
||||
|
||||
@ -811,43 +869,44 @@ sub declast()
|
||||
&mov ($s2,&DWP(8,$key));
|
||||
&mov ($s3,&DWP(12,$key));
|
||||
|
||||
&xor ($s0,&DWP(0,$acc)); # xor input data
|
||||
&xor ($s0,&DWP(0,$acc)); # xor input data
|
||||
&xor ($s1,&DWP(4,$acc));
|
||||
&xor ($s2,&DWP(8,$acc));
|
||||
&xor ($s3,&DWP(12,$acc));
|
||||
|
||||
&mov ($key,&wparam(3)); # load key
|
||||
&mov ($key,$_key); # load key
|
||||
&call ("_x86_AES_encrypt");
|
||||
|
||||
&mov ($acc,&wparam(0)); # load inp
|
||||
&mov ($key,&wparam(1)); # load out
|
||||
&mov ($acc,$_inp); # load inp
|
||||
&mov ($key,$_out); # load out
|
||||
|
||||
&mov (&DWP(0,$key),$s0); # save output data
|
||||
&mov (&DWP(0,$key),$s0); # save output data
|
||||
&mov (&DWP(4,$key),$s1);
|
||||
&mov (&DWP(8,$key),$s2);
|
||||
&mov (&DWP(12,$key),$s3);
|
||||
|
||||
&mov ($s2,&wparam(2)); # load len
|
||||
&mov ($s2,$_len); # load len
|
||||
|
||||
&lea ($acc,&DWP(16,$acc));
|
||||
&mov (&wparam(0),$acc); # save inp
|
||||
&mov ($_inp,$acc); # save inp
|
||||
|
||||
&lea ($s3,&DWP(16,$key));
|
||||
&mov (&wparam(1),$s3); # save out
|
||||
&mov ($_out,$s3); # save out
|
||||
|
||||
&sub ($s2,16);
|
||||
&test ($s2,0xFFFFFFF0);
|
||||
&mov (&wparam(2),$s2); # save len
|
||||
&mov ($_len,$s2); # save len
|
||||
&jnz (&label("enc_loop"));
|
||||
&test ($s2,15);
|
||||
&jnz (&label("enc_tail"));
|
||||
&mov ($acc,&wparam(4)); # load ivp
|
||||
&mov ($s2,&DWP(8,$key)); # restore last dwords
|
||||
&mov ($acc,$_ivp); # load ivp
|
||||
&mov ($s2,&DWP(8,$key)); # restore last dwords
|
||||
&mov ($s3,&DWP(12,$key));
|
||||
&mov (&DWP(0,$acc),$s0); # save iv
|
||||
&mov (&DWP(0,$acc),$s0); # save ivec
|
||||
&mov (&DWP(4,$acc),$s1);
|
||||
&mov (&DWP(8,$acc),$s2);
|
||||
&mov (&DWP(12,$acc),$s3);
|
||||
&mov ("esp",$_esp);
|
||||
&set_label("enc_out");
|
||||
&function_end_A();
|
||||
|
||||
@ -855,7 +914,7 @@ sub declast()
|
||||
&set_label("enc_tail");
|
||||
&push ($key eq "edi" ? $key : ""); # push ivp
|
||||
&pushf ();
|
||||
&mov ($key,&wparam(1)); # load out
|
||||
&mov ($key,$_out); # load out
|
||||
&mov ($s1,16);
|
||||
&sub ($s1,$s2);
|
||||
&cmp ($key,$acc); # compare with inp
|
||||
@ -871,81 +930,109 @@ sub declast()
|
||||
&popf ();
|
||||
&pop ($key); # pop ivp
|
||||
|
||||
# prefetch AES_Te
|
||||
for ($i=0;$i<2048;$i+=128)
|
||||
{ &mov ($s0,&DWP($i+0,"ebp"));
|
||||
&mov ($s1,&DWP($i+32,"ebp"));
|
||||
&mov ($s2,&DWP($i+64,"ebp"));
|
||||
&mov ($s3,&DWP($i+96,"ebp"));
|
||||
}
|
||||
|
||||
&mov ($acc,&wparam(1)); # output as input
|
||||
&mov ($acc,$_out); # output as input
|
||||
&mov ($s0,&DWP(0,$key));
|
||||
&mov ($s1,&DWP(4,$key));
|
||||
&mov (&wparam(2),16); # len=16
|
||||
&mov ($_len,16); # len=16
|
||||
&jmp (&label("enc_loop")); # one more spin...
|
||||
|
||||
#----------------------------- DECRYPT -----------------------------#
|
||||
&align (4);
|
||||
&set_label("DECRYPT");
|
||||
&stack_push(5); # allocate temp + ivp
|
||||
|
||||
&lea ("ebp",&DWP(&label("AES_Td")."-".&label("pic_point"),"ebp"));
|
||||
|
||||
# prefetch AES_Td
|
||||
for ($i=0;$i<3072;$i+=128)
|
||||
{ &mov ($s0,&DWP($i+0,"ebp"));
|
||||
&mov ($s1,&DWP($i+32,"ebp"));
|
||||
&mov ($s2,&DWP($i+64,"ebp"));
|
||||
&mov ($s3,&DWP($i+96,"ebp"));
|
||||
}
|
||||
# allocate aligned stack frame...
|
||||
&lea ($key,&DWP(-64,"esp"));
|
||||
&and ($key,-64);
|
||||
|
||||
&mov ($acc,&wparam(0)); # load inp
|
||||
&cmp ($acc,&wparam(1));
|
||||
# ... and make sure it doesn't alias with AES_Td modulo 4096
|
||||
&mov ($s1,"ebp");
|
||||
&mov ($s3,$key);
|
||||
&and ($s1,0xfff); # t = %ebp&0xfff
|
||||
&and ($s3,0xfff); # p = %esp&0xfff
|
||||
|
||||
&cmp ($s3,$s1); # if (p<t) goto ok
|
||||
&jb (&label("td_ok"));
|
||||
&lea ($acc,&DWP(3072,$s1));
|
||||
&cmp ($s3,$acc); # if (p>=(t+3072)) goto ok
|
||||
&jae (&label("td_ok"));
|
||||
&sub ($s1,$s3); # t -= p
|
||||
&lea ($key,&DWP(-64,$key,$s1));# %esp -= (p-t)+64
|
||||
&set_label("td_ok");
|
||||
|
||||
&mov ($s0,&wparam(0)); # load inp
|
||||
&mov ($s1,&wparam(1)); # load out
|
||||
&mov ($s3,&wparam(3)); # load key
|
||||
&mov ($acc,&wparam(4)); # load ivp
|
||||
|
||||
&exch ("esp",$key);
|
||||
&add ("esp",4); # reserve for return address!
|
||||
&mov ($_esp,$key); # save %esp
|
||||
|
||||
&mov ($_inp,$s0); # save copy of inp
|
||||
&mov ($_out,$s1); # save copy of out
|
||||
&mov ($_len,$s2); # save copy of len
|
||||
&mov ($_key,$s3); # save copy of key
|
||||
&mov ($_ivp,$acc); # save copy of ivp
|
||||
|
||||
&mov ($acc,$s0);
|
||||
&mov ($key,24);
|
||||
&align (4);
|
||||
&set_label("prefetch_td");
|
||||
&mov ($s0,&DWP(0,"ebp"));
|
||||
&mov ($s1,&DWP(32,"ebp"));
|
||||
&mov ($s2,&DWP(64,"ebp"));
|
||||
&mov ($s3,&DWP(96,"ebp"));
|
||||
&lea ("ebp",&DWP(128,"ebp"));
|
||||
&dec ($key);
|
||||
&jnz (&label("prefetch_td"));
|
||||
&sub ("ebp",3072);
|
||||
|
||||
&cmp ($acc,$_out);
|
||||
&je (&label("dec_in_place")); # in-place processing...
|
||||
|
||||
&mov ($key,&wparam(4)); # load ivp
|
||||
&mov (&swtmp(4),$key);
|
||||
&mov ($key,$_ivp); # load ivp
|
||||
&mov ($_tmp,$key);
|
||||
|
||||
&align (4);
|
||||
&set_label("dec_loop");
|
||||
&mov ($s0,&DWP(0,$acc)); # read input
|
||||
&mov ($s0,&DWP(0,$acc)); # read input
|
||||
&mov ($s1,&DWP(4,$acc));
|
||||
&mov ($s2,&DWP(8,$acc));
|
||||
&mov ($s3,&DWP(12,$acc));
|
||||
|
||||
&mov ($key,&wparam(3)); # load key
|
||||
&mov ($key,$_key); # load key
|
||||
&call ("_x86_AES_decrypt");
|
||||
|
||||
&mov ($key,&swtmp(4)); # load ivp
|
||||
&mov ($acc,&wparam(2)); # load len
|
||||
&xor ($s0,&DWP(0,$key)); # xor iv
|
||||
&mov ($key,$_tmp); # load ivp
|
||||
&mov ($acc,$_len); # load len
|
||||
&xor ($s0,&DWP(0,$key)); # xor iv
|
||||
&xor ($s1,&DWP(4,$key));
|
||||
&xor ($s2,&DWP(8,$key));
|
||||
&xor ($s3,&DWP(12,$key));
|
||||
|
||||
&sub ($acc,16);
|
||||
&jc (&label("dec_partial"));
|
||||
&mov (&wparam(2),$acc); # save len
|
||||
&mov ($acc,&wparam(0)); # load inp
|
||||
&mov ($key,&wparam(1)); # load out
|
||||
&mov ($_len,$acc); # save len
|
||||
&mov ($acc,$_inp); # load inp
|
||||
&mov ($key,$_out); # load out
|
||||
|
||||
&mov (&DWP(0,$key),$s0); # write output
|
||||
&mov (&DWP(0,$key),$s0); # write output
|
||||
&mov (&DWP(4,$key),$s1);
|
||||
&mov (&DWP(8,$key),$s2);
|
||||
&mov (&DWP(12,$key),$s3);
|
||||
|
||||
&mov (&swtmp(4),$acc); # save ivp
|
||||
&mov ($_tmp,$acc); # save ivp
|
||||
&lea ($acc,&DWP(16,$acc));
|
||||
&mov (&wparam(0),$acc); # save inp
|
||||
&mov ($_inp,$acc); # save inp
|
||||
|
||||
&lea ($key,&DWP(16,$key));
|
||||
&mov (&wparam(1),$key); # save out
|
||||
&mov ($_out,$key); # save out
|
||||
|
||||
&jnz (&label("dec_loop"));
|
||||
&mov ($key,&swtmp(4)); # load temp ivp
|
||||
&mov ($key,$_tmp); # load temp ivp
|
||||
&set_label("dec_end");
|
||||
&mov ($acc,&wparam(4)); # load user ivp
|
||||
&mov ($acc,$_ivp); # load user ivp
|
||||
&mov ($s0,&DWP(0,$key)); # load iv
|
||||
&mov ($s1,&DWP(4,$key));
|
||||
&mov ($s2,&DWP(8,$key));
|
||||
@ -958,80 +1045,80 @@ sub declast()
|
||||
|
||||
&align (4);
|
||||
&set_label("dec_partial");
|
||||
&lea ($key,&swtmp(0));
|
||||
&lea ($key,$ivec);
|
||||
&mov (&DWP(0,$key),$s0); # dump output to stack
|
||||
&mov (&DWP(4,$key),$s1);
|
||||
&mov (&DWP(8,$key),$s2);
|
||||
&mov (&DWP(12,$key),$s3);
|
||||
&lea ($s2 eq "ecx" ? $s2 : "",&DWP(16,$acc));
|
||||
&mov ($acc eq "esi" ? $acc : "",$key);
|
||||
&mov ($key eq "edi" ? $key : "",&wparam(1));
|
||||
&mov ($key eq "edi" ? $key : "",$_out); # load out
|
||||
&pushf ();
|
||||
&data_word(0x90A4F3FC); # cld; rep movsb; nop # copy output
|
||||
&popf ();
|
||||
&mov ($key,&wparam(0)); # load temp ivp
|
||||
&mov ($key,$_inp); # use inp as temp ivp
|
||||
&jmp (&label("dec_end"));
|
||||
|
||||
&align (4);
|
||||
&set_label("dec_in_place");
|
||||
&set_label("dec_in_place_loop");
|
||||
&lea ($key,&swtmp(0));
|
||||
&mov ($s0,&DWP(0,$acc)); # read input
|
||||
&lea ($key,$ivec);
|
||||
&mov ($s0,&DWP(0,$acc)); # read input
|
||||
&mov ($s1,&DWP(4,$acc));
|
||||
&mov ($s2,&DWP(8,$acc));
|
||||
&mov ($s3,&DWP(12,$acc));
|
||||
|
||||
&mov (&DWP(0,$key),$s0); # copy to temp
|
||||
&mov (&DWP(0,$key),$s0); # copy to temp
|
||||
&mov (&DWP(4,$key),$s1);
|
||||
&mov (&DWP(8,$key),$s2);
|
||||
&mov (&DWP(12,$key),$s3);
|
||||
|
||||
&mov ($key,&wparam(3)); # load key
|
||||
&mov ($key,$_key); # load key
|
||||
&call ("_x86_AES_decrypt");
|
||||
|
||||
&mov ($key,&wparam(4)); # load ivp
|
||||
&mov ($acc,&wparam(1)); # load out
|
||||
&xor ($s0,&DWP(0,$key)); # xor iv
|
||||
&mov ($key,$_ivp); # load ivp
|
||||
&mov ($acc,$_out); # load out
|
||||
&xor ($s0,&DWP(0,$key)); # xor iv
|
||||
&xor ($s1,&DWP(4,$key));
|
||||
&xor ($s2,&DWP(8,$key));
|
||||
&xor ($s3,&DWP(12,$key));
|
||||
|
||||
&mov (&DWP(0,$acc),$s0); # write output
|
||||
&mov (&DWP(0,$acc),$s0); # write output
|
||||
&mov (&DWP(4,$acc),$s1);
|
||||
&mov (&DWP(8,$acc),$s2);
|
||||
&mov (&DWP(12,$acc),$s3);
|
||||
|
||||
&lea ($acc,&DWP(16,$acc));
|
||||
&mov (&wparam(1),$acc); # save out
|
||||
&mov ($_out,$acc); # save out
|
||||
|
||||
&lea ($acc,&swtmp(0));
|
||||
&mov ($s0,&DWP(0,$acc)); # read temp
|
||||
&lea ($acc,$ivec);
|
||||
&mov ($s0,&DWP(0,$acc)); # read temp
|
||||
&mov ($s1,&DWP(4,$acc));
|
||||
&mov ($s2,&DWP(8,$acc));
|
||||
&mov ($s3,&DWP(12,$acc));
|
||||
|
||||
&mov (&DWP(0,$key),$s0); # copy iv
|
||||
&mov (&DWP(0,$key),$s0); # copy iv
|
||||
&mov (&DWP(4,$key),$s1);
|
||||
&mov (&DWP(8,$key),$s2);
|
||||
&mov (&DWP(12,$key),$s3);
|
||||
|
||||
&mov ($acc,&wparam(0)); # load inp
|
||||
&mov ($acc,$_inp); # load inp
|
||||
|
||||
&lea ($acc,&DWP(16,$acc));
|
||||
&mov (&wparam(0),$acc); # save inp
|
||||
&mov ($_inp,$acc); # save inp
|
||||
|
||||
&mov ($s2,&wparam(2)); # load len
|
||||
&mov ($s2,$_len); # load len
|
||||
&sub ($s2,16);
|
||||
&jc (&label("dec_in_place_partial"));
|
||||
&mov (&wparam(2),$s2); # save len
|
||||
&mov ($_len,$s2); # save len
|
||||
&jnz (&label("dec_in_place_loop"));
|
||||
&jmp (&label("dec_out"));
|
||||
|
||||
&align (4);
|
||||
&set_label("dec_in_place_partial");
|
||||
# one can argue if this is actually required...
|
||||
&mov ($key eq "edi" ? $key : "",&wparam(1));
|
||||
&lea ($acc eq "esi" ? $acc : "",&swtmp(0));
|
||||
&mov ($key eq "edi" ? $key : "",$_out);
|
||||
&lea ($acc eq "esi" ? $acc : "",$ivec);
|
||||
&lea ($key,&DWP(0,$key,$s2));
|
||||
&lea ($acc,&DWP(16,$acc,$s2));
|
||||
&neg ($s2 eq "ecx" ? $s2 : "");
|
||||
@ -1041,8 +1128,9 @@ sub declast()
|
||||
|
||||
&align (4);
|
||||
&set_label("dec_out");
|
||||
&stack_pop(5);
|
||||
&mov ("esp",$_esp);
|
||||
&function_end("AES_cbc_encrypt");
|
||||
}
|
||||
|
||||
#------------------------------------------------------------------#
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user