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openssl/crypto/camellia/asm/cmll-x86.pl

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v1.1.1t
2023-05-09 22:08:48 +00:00
#! /usr/bin/env perl
# Copyright 2008-2020 The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the OpenSSL license (the "License"). You may not use
# this file except in compliance with the License. You can obtain a copy
# in the file LICENSE in the source distribution or at
# https://www.openssl.org/source/license.html
# ====================================================================
# Copyright (c) 2008 Andy Polyakov <appro@openssl.org>
#
# This module may be used under the terms of either the GNU General
# Public License version 2 or later, the GNU Lesser General Public
# License version 2.1 or later, the Mozilla Public License version
# 1.1 or the BSD License. The exact terms of either license are
# distributed along with this module. For further details see
# http://www.openssl.org/~appro/camellia/.
# ====================================================================
# Performance in cycles per processed byte (less is better) in
# 'openssl speed ...' benchmark:
#
# AMD K8 Core2 PIII P4
# -evp camellia-128-ecb 21.5 22.8 27.0 28.9
# + over gcc 3.4.6 +90/11% +70/10% +53/4% +160/64%
# + over icc 8.0 +48/19% +21/15% +21/17% +55/37%
#
# camellia-128-cbc 17.3 21.1 23.9 25.9
#
# 128-bit key setup 196 280 256 240 cycles/key
# + over gcc 3.4.6 +30/0% +17/11% +11/0% +63/40%
# + over icc 8.0 +18/3% +10/0% +10/3% +21/10%
#
# Pairs of numbers in "+" rows represent performance improvement over
# compiler generated position-independent code, PIC, and non-PIC
# respectively. PIC results are of greater relevance, as this module
# is position-independent, i.e. suitable for a shared library or PIE.
# Position independence "costs" one register, which is why compilers
# are so close with non-PIC results, they have an extra register to
# spare. CBC results are better than ECB ones thanks to "zero-copy"
# private _x86_* interface, and are ~30-40% better than with compiler
# generated cmll_cbc.o, and reach ~80-90% of x86_64 performance on
# same CPU (where applicable).
$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
push(@INC,"${dir}","${dir}../../perlasm");
require "x86asm.pl";
$OPENSSL=1;
$output = pop;
open STDOUT,">$output";
&asm_init($ARGV[0],$ARGV[$#ARGV] eq "386");
@T=("eax","ebx","ecx","edx");
$idx="esi";
$key="edi";
$Tbl="ebp";
# stack frame layout in _x86_Camellia_* routines, frame is allocated
# by caller
$__ra=&DWP(0,"esp"); # return address
$__s0=&DWP(4,"esp"); # s0 backing store
$__s1=&DWP(8,"esp"); # s1 backing store
$__s2=&DWP(12,"esp"); # s2 backing store
$__s3=&DWP(16,"esp"); # s3 backing store
$__end=&DWP(20,"esp"); # pointer to end/start of key schedule
# stack frame layout in Camellia_[en|crypt] routines, which differs from
# above by 4 and overlaps by pointer to end/start of key schedule
$_end=&DWP(16,"esp");
$_esp=&DWP(20,"esp");
# const unsigned int Camellia_SBOX[4][256];
# Well, sort of... Camellia_SBOX[0][] is interleaved with [1][],
# and [2][] - with [3][]. This is done to optimize code size.
$SBOX1_1110=0; # Camellia_SBOX[0]
$SBOX4_4404=4; # Camellia_SBOX[1]
$SBOX2_0222=2048; # Camellia_SBOX[2]
$SBOX3_3033=2052; # Camellia_SBOX[3]
&static_label("Camellia_SIGMA");
&static_label("Camellia_SBOX");
sub Camellia_Feistel {
my $i=@_[0];
my $seed=defined(@_[1])?@_[1]:0;
my $scale=$seed<0?-8:8;
my $frame=defined(@_[2])?@_[2]:0;
my $j=($i&1)*2;
my $t0=@T[($j)%4],$t1=@T[($j+1)%4],$t2=@T[($j+2)%4],$t3=@T[($j+3)%4];
&xor ($t0,$idx); # t0^=key[0]
&xor ($t1,&DWP($seed+$i*$scale+4,$key)); # t1^=key[1]
&movz ($idx,&HB($t0)); # (t0>>8)&0xff
&mov ($t3,&DWP($SBOX3_3033,$Tbl,$idx,8)); # t3=SBOX3_3033[0]
&movz ($idx,&LB($t0)); # (t0>>0)&0xff
&xor ($t3,&DWP($SBOX4_4404,$Tbl,$idx,8)); # t3^=SBOX4_4404[0]
&shr ($t0,16);
&movz ($idx,&LB($t1)); # (t1>>0)&0xff
&mov ($t2,&DWP($SBOX1_1110,$Tbl,$idx,8)); # t2=SBOX1_1110[1]
&movz ($idx,&HB($t0)); # (t0>>24)&0xff
&xor ($t3,&DWP($SBOX1_1110,$Tbl,$idx,8)); # t3^=SBOX1_1110[0]
&movz ($idx,&HB($t1)); # (t1>>8)&0xff
&xor ($t2,&DWP($SBOX4_4404,$Tbl,$idx,8)); # t2^=SBOX4_4404[1]
&shr ($t1,16);
&movz ($t0,&LB($t0)); # (t0>>16)&0xff
&xor ($t3,&DWP($SBOX2_0222,$Tbl,$t0,8)); # t3^=SBOX2_0222[0]
&movz ($idx,&HB($t1)); # (t1>>24)&0xff
&mov ($t0,&DWP($frame+4*(($j+3)%4),"esp")); # prefetch "s3"
&xor ($t2,$t3); # t2^=t3
&rotr ($t3,8); # t3=RightRotate(t3,8)
&xor ($t2,&DWP($SBOX2_0222,$Tbl,$idx,8)); # t2^=SBOX2_0222[1]
&movz ($idx,&LB($t1)); # (t1>>16)&0xff
&mov ($t1,&DWP($frame+4*(($j+2)%4),"esp")); # prefetch "s2"
&xor ($t3,$t0); # t3^=s3
&xor ($t2,&DWP($SBOX3_3033,$Tbl,$idx,8)); # t2^=SBOX3_3033[1]
&mov ($idx,&DWP($seed+($i+1)*$scale,$key)); # prefetch key[i+1]
&xor ($t3,$t2); # t3^=t2
&mov (&DWP($frame+4*(($j+3)%4),"esp"),$t3); # s3=t3
&xor ($t2,$t1); # t2^=s2
&mov (&DWP($frame+4*(($j+2)%4),"esp"),$t2); # s2=t2
}
# void Camellia_EncryptBlock_Rounds(
# int grandRounds,
# const Byte plaintext[],
# const KEY_TABLE_TYPE keyTable,
# Byte ciphertext[])
&function_begin("Camellia_EncryptBlock_Rounds");
&mov ("eax",&wparam(0)); # load grandRounds
&mov ($idx,&wparam(1)); # load plaintext pointer
&mov ($key,&wparam(2)); # load key schedule pointer
&mov ("ebx","esp");
&sub ("esp",7*4); # place for s[0-3],keyEnd,esp and ra
&and ("esp",-64);
# place stack frame just "above mod 1024" the key schedule
# this ensures that cache associativity of 2 suffices
&lea ("ecx",&DWP(-64-63,$key));
&sub ("ecx","esp");
&neg ("ecx");
&and ("ecx",0x3C0); # modulo 1024, but aligned to cache-line
&sub ("esp","ecx");
&add ("esp",4); # 4 is reserved for callee's return address
&shl ("eax",6);
&lea ("eax",&DWP(0,$key,"eax"));
&mov ($_esp,"ebx"); # save %esp
&mov ($_end,"eax"); # save keyEnd
&call (&label("pic_point"));
&set_label("pic_point");
&blindpop($Tbl);
&lea ($Tbl,&DWP(&label("Camellia_SBOX")."-".&label("pic_point"),$Tbl));
&mov (@T[0],&DWP(0,$idx)); # load plaintext
&mov (@T[1],&DWP(4,$idx));
&mov (@T[2],&DWP(8,$idx));
&bswap (@T[0]);
&mov (@T[3],&DWP(12,$idx));
&bswap (@T[1]);
&bswap (@T[2]);
&bswap (@T[3]);
&call ("_x86_Camellia_encrypt");
&mov ("esp",$_esp);
&bswap (@T[0]);
&mov ($idx,&wparam(3)); # load ciphertext pointer
&bswap (@T[1]);
&bswap (@T[2]);
&bswap (@T[3]);
&mov (&DWP(0,$idx),@T[0]); # write ciphertext
&mov (&DWP(4,$idx),@T[1]);
&mov (&DWP(8,$idx),@T[2]);
&mov (&DWP(12,$idx),@T[3]);
&function_end("Camellia_EncryptBlock_Rounds");
# V1.x API
&function_begin_B("Camellia_EncryptBlock");
&mov ("eax",128);
&sub ("eax",&wparam(0)); # load keyBitLength
&mov ("eax",3);
&adc ("eax",0); # keyBitLength==128?3:4
&mov (&wparam(0),"eax");
&jmp (&label("Camellia_EncryptBlock_Rounds"));
&function_end_B("Camellia_EncryptBlock");
if ($OPENSSL) {
# void Camellia_encrypt(
# const unsigned char *in,
# unsigned char *out,
# const CAMELLIA_KEY *key)
&function_begin("Camellia_encrypt");
&mov ($idx,&wparam(0)); # load plaintext pointer
&mov ($key,&wparam(2)); # load key schedule pointer
&mov ("ebx","esp");
&sub ("esp",7*4); # place for s[0-3],keyEnd,esp and ra
&and ("esp",-64);
&mov ("eax",&DWP(272,$key)); # load grandRounds counter
# place stack frame just "above mod 1024" the key schedule
# this ensures that cache associativity of 2 suffices
&lea ("ecx",&DWP(-64-63,$key));
&sub ("ecx","esp");
&neg ("ecx");
&and ("ecx",0x3C0); # modulo 1024, but aligned to cache-line
&sub ("esp","ecx");
&add ("esp",4); # 4 is reserved for callee's return address
&shl ("eax",6);
&lea ("eax",&DWP(0,$key,"eax"));
&mov ($_esp,"ebx"); # save %esp
&mov ($_end,"eax"); # save keyEnd
&call (&label("pic_point"));
&set_label("pic_point");
&blindpop($Tbl);
&lea ($Tbl,&DWP(&label("Camellia_SBOX")."-".&label("pic_point"),$Tbl));
&mov (@T[0],&DWP(0,$idx)); # load plaintext
&mov (@T[1],&DWP(4,$idx));
&mov (@T[2],&DWP(8,$idx));
&bswap (@T[0]);
&mov (@T[3],&DWP(12,$idx));
&bswap (@T[1]);
&bswap (@T[2]);
&bswap (@T[3]);
&call ("_x86_Camellia_encrypt");
&mov ("esp",$_esp);
&bswap (@T[0]);
&mov ($idx,&wparam(1)); # load ciphertext pointer
&bswap (@T[1]);
&bswap (@T[2]);
&bswap (@T[3]);
&mov (&DWP(0,$idx),@T[0]); # write ciphertext
&mov (&DWP(4,$idx),@T[1]);
&mov (&DWP(8,$idx),@T[2]);
&mov (&DWP(12,$idx),@T[3]);
&function_end("Camellia_encrypt");
}
&function_begin_B("_x86_Camellia_encrypt");
&xor (@T[0],&DWP(0,$key)); # ^=key[0-3]
&xor (@T[1],&DWP(4,$key));
&xor (@T[2],&DWP(8,$key));
&xor (@T[3],&DWP(12,$key));
&mov ($idx,&DWP(16,$key)); # prefetch key[4]
&mov ($__s0,@T[0]); # save s[0-3]
&mov ($__s1,@T[1]);
&mov ($__s2,@T[2]);
&mov ($__s3,@T[3]);
&set_label("loop",16);
for ($i=0;$i<6;$i++) { Camellia_Feistel($i,16,4); }
&add ($key,16*4);
&cmp ($key,$__end);
&je (&label("done"));
# @T[0-1] are preloaded, $idx is preloaded with key[0]
&and ($idx,@T[0]);
&mov (@T[3],$__s3);
&rotl ($idx,1);
&mov (@T[2],@T[3]);
&xor (@T[1],$idx);
&or (@T[2],&DWP(12,$key));
&mov ($__s1,@T[1]); # s1^=LeftRotate(s0&key[0],1);
&xor (@T[2],$__s2);
&mov ($idx,&DWP(4,$key));
&mov ($__s2,@T[2]); # s2^=s3|key[3];
&or ($idx,@T[1]);
&and (@T[2],&DWP(8,$key));
&xor (@T[0],$idx);
&rotl (@T[2],1);
&mov ($__s0,@T[0]); # s0^=s1|key[1];
&xor (@T[3],@T[2]);
&mov ($idx,&DWP(16,$key)); # prefetch key[4]
&mov ($__s3,@T[3]); # s3^=LeftRotate(s2&key[2],1);
&jmp (&label("loop"));
&set_label("done",8);
&mov (@T[2],@T[0]); # SwapHalf
&mov (@T[3],@T[1]);
&mov (@T[0],$__s2);
&mov (@T[1],$__s3);
&xor (@T[0],$idx); # $idx is preloaded with key[0]
&xor (@T[1],&DWP(4,$key));
&xor (@T[2],&DWP(8,$key));
&xor (@T[3],&DWP(12,$key));
&ret ();
&function_end_B("_x86_Camellia_encrypt");
# void Camellia_DecryptBlock_Rounds(
# int grandRounds,
# const Byte ciphertext[],
# const KEY_TABLE_TYPE keyTable,
# Byte plaintext[])
&function_begin("Camellia_DecryptBlock_Rounds");
&mov ("eax",&wparam(0)); # load grandRounds
&mov ($idx,&wparam(1)); # load ciphertext pointer
&mov ($key,&wparam(2)); # load key schedule pointer
&mov ("ebx","esp");
&sub ("esp",7*4); # place for s[0-3],keyEnd,esp and ra
&and ("esp",-64);
# place stack frame just "above mod 1024" the key schedule
# this ensures that cache associativity of 2 suffices
&lea ("ecx",&DWP(-64-63,$key));
&sub ("ecx","esp");
&neg ("ecx");
&and ("ecx",0x3C0); # modulo 1024, but aligned to cache-line
&sub ("esp","ecx");
&add ("esp",4); # 4 is reserved for callee's return address
&shl ("eax",6);
&mov (&DWP(4*4,"esp"),$key); # save keyStart
&lea ($key,&DWP(0,$key,"eax"));
&mov (&DWP(5*4,"esp"),"ebx");# save %esp
&call (&label("pic_point"));
&set_label("pic_point");
&blindpop($Tbl);
&lea ($Tbl,&DWP(&label("Camellia_SBOX")."-".&label("pic_point"),$Tbl));
&mov (@T[0],&DWP(0,$idx)); # load ciphertext
&mov (@T[1],&DWP(4,$idx));
&mov (@T[2],&DWP(8,$idx));
&bswap (@T[0]);
&mov (@T[3],&DWP(12,$idx));
&bswap (@T[1]);
&bswap (@T[2]);
&bswap (@T[3]);
&call ("_x86_Camellia_decrypt");
&mov ("esp",&DWP(5*4,"esp"));
&bswap (@T[0]);
&mov ($idx,&wparam(3)); # load plaintext pointer
&bswap (@T[1]);
&bswap (@T[2]);
&bswap (@T[3]);
&mov (&DWP(0,$idx),@T[0]); # write plaintext
&mov (&DWP(4,$idx),@T[1]);
&mov (&DWP(8,$idx),@T[2]);
&mov (&DWP(12,$idx),@T[3]);
&function_end("Camellia_DecryptBlock_Rounds");
# V1.x API
&function_begin_B("Camellia_DecryptBlock");
&mov ("eax",128);
&sub ("eax",&wparam(0)); # load keyBitLength
&mov ("eax",3);
&adc ("eax",0); # keyBitLength==128?3:4
&mov (&wparam(0),"eax");
&jmp (&label("Camellia_DecryptBlock_Rounds"));
&function_end_B("Camellia_DecryptBlock");
if ($OPENSSL) {
# void Camellia_decrypt(
# const unsigned char *in,
# unsigned char *out,
# const CAMELLIA_KEY *key)
&function_begin("Camellia_decrypt");
&mov ($idx,&wparam(0)); # load ciphertext pointer
&mov ($key,&wparam(2)); # load key schedule pointer
&mov ("ebx","esp");
&sub ("esp",7*4); # place for s[0-3],keyEnd,esp and ra
&and ("esp",-64);
&mov ("eax",&DWP(272,$key)); # load grandRounds counter
# place stack frame just "above mod 1024" the key schedule
# this ensures that cache associativity of 2 suffices
&lea ("ecx",&DWP(-64-63,$key));
&sub ("ecx","esp");
&neg ("ecx");
&and ("ecx",0x3C0); # modulo 1024, but aligned to cache-line
&sub ("esp","ecx");
&add ("esp",4); # 4 is reserved for callee's return address
&shl ("eax",6);
&mov (&DWP(4*4,"esp"),$key); # save keyStart
&lea ($key,&DWP(0,$key,"eax"));
&mov (&DWP(5*4,"esp"),"ebx");# save %esp
&call (&label("pic_point"));
&set_label("pic_point");
&blindpop($Tbl);
&lea ($Tbl,&DWP(&label("Camellia_SBOX")."-".&label("pic_point"),$Tbl));
&mov (@T[0],&DWP(0,$idx)); # load ciphertext
&mov (@T[1],&DWP(4,$idx));
&mov (@T[2],&DWP(8,$idx));
&bswap (@T[0]);
&mov (@T[3],&DWP(12,$idx));
&bswap (@T[1]);
&bswap (@T[2]);
&bswap (@T[3]);
&call ("_x86_Camellia_decrypt");
&mov ("esp",&DWP(5*4,"esp"));
&bswap (@T[0]);
&mov ($idx,&wparam(1)); # load plaintext pointer
&bswap (@T[1]);
&bswap (@T[2]);
&bswap (@T[3]);
&mov (&DWP(0,$idx),@T[0]); # write plaintext
&mov (&DWP(4,$idx),@T[1]);
&mov (&DWP(8,$idx),@T[2]);
&mov (&DWP(12,$idx),@T[3]);
&function_end("Camellia_decrypt");
}
&function_begin_B("_x86_Camellia_decrypt");
&xor (@T[0],&DWP(0,$key)); # ^=key[0-3]
&xor (@T[1],&DWP(4,$key));
&xor (@T[2],&DWP(8,$key));
&xor (@T[3],&DWP(12,$key));
&mov ($idx,&DWP(-8,$key)); # prefetch key[-2]
&mov ($__s0,@T[0]); # save s[0-3]
&mov ($__s1,@T[1]);
&mov ($__s2,@T[2]);
&mov ($__s3,@T[3]);
&set_label("loop",16);
for ($i=0;$i<6;$i++) { Camellia_Feistel($i,-8,4); }
&sub ($key,16*4);
&cmp ($key,$__end);
&je (&label("done"));
# @T[0-1] are preloaded, $idx is preloaded with key[2]
&and ($idx,@T[0]);
&mov (@T[3],$__s3);
&rotl ($idx,1);
&mov (@T[2],@T[3]);
&xor (@T[1],$idx);
&or (@T[2],&DWP(4,$key));
&mov ($__s1,@T[1]); # s1^=LeftRotate(s0&key[0],1);
&xor (@T[2],$__s2);
&mov ($idx,&DWP(12,$key));
&mov ($__s2,@T[2]); # s2^=s3|key[3];
&or ($idx,@T[1]);
&and (@T[2],&DWP(0,$key));
&xor (@T[0],$idx);
&rotl (@T[2],1);
&mov ($__s0,@T[0]); # s0^=s1|key[1];
&xor (@T[3],@T[2]);
&mov ($idx,&DWP(-8,$key)); # prefetch key[4]
&mov ($__s3,@T[3]); # s3^=LeftRotate(s2&key[2],1);
&jmp (&label("loop"));
&set_label("done",8);
&mov (@T[2],@T[0]); # SwapHalf
&mov (@T[3],@T[1]);
&mov (@T[0],$__s2);
&mov (@T[1],$__s3);
&xor (@T[2],$idx); # $idx is preloaded with key[2]
&xor (@T[3],&DWP(12,$key));
&xor (@T[0],&DWP(0,$key));
&xor (@T[1],&DWP(4,$key));
&ret ();
&function_end_B("_x86_Camellia_decrypt");
# shld is very slow on Intel P4 family. Even on AMD it limits
# instruction decode rate [because it's VectorPath] and consequently
# performance. PIII, PM and Core[2] seem to be the only ones which
# execute this code ~7% faster...
sub __rotl128 {
my ($i0,$i1,$i2,$i3,$rot,$rnd,@T)=@_;
$rnd *= 2;
if ($rot) {
&mov ($idx,$i0);
&shld ($i0,$i1,$rot);
&shld ($i1,$i2,$rot);
&shld ($i2,$i3,$rot);
&shld ($i3,$idx,$rot);
}
&mov (&DWP(-128+4*$rnd++,$key),shift(@T)) if ($i0 eq @T[0]);
&mov (&DWP(-128+4*$rnd++,$key),shift(@T)) if ($i1 eq @T[0]);
&mov (&DWP(-128+4*$rnd++,$key),shift(@T)) if ($i2 eq @T[0]);
&mov (&DWP(-128+4*$rnd++,$key),shift(@T)) if ($i3 eq @T[0]);
}
# ... Implementing 128-bit rotate without shld gives >3x performance
# improvement on P4, only ~7% degradation on other Intel CPUs and
# not worse performance on AMD. This is therefore preferred.
sub _rotl128 {
my ($i0,$i1,$i2,$i3,$rot,$rnd,@T)=@_;
$rnd *= 2;
if ($rot) {
&mov ($Tbl,$i0);
&shl ($i0,$rot);
&mov ($idx,$i1);
&shr ($idx,32-$rot);
&shl ($i1,$rot);
&or ($i0,$idx);
&mov ($idx,$i2);
&shl ($i2,$rot);
&mov (&DWP(-128+4*$rnd++,$key),shift(@T)) if ($i0 eq @T[0]);
&shr ($idx,32-$rot);
&or ($i1,$idx);
&shr ($Tbl,32-$rot);
&mov ($idx,$i3);
&shr ($idx,32-$rot);
&mov (&DWP(-128+4*$rnd++,$key),shift(@T)) if ($i1 eq @T[0]);
&shl ($i3,$rot);
&or ($i2,$idx);
&or ($i3,$Tbl);
&mov (&DWP(-128+4*$rnd++,$key),shift(@T)) if ($i2 eq @T[0]);
&mov (&DWP(-128+4*$rnd++,$key),shift(@T)) if ($i3 eq @T[0]);
} else {
&mov (&DWP(-128+4*$rnd++,$key),shift(@T)) if ($i0 eq @T[0]);
&mov (&DWP(-128+4*$rnd++,$key),shift(@T)) if ($i1 eq @T[0]);
&mov (&DWP(-128+4*$rnd++,$key),shift(@T)) if ($i2 eq @T[0]);
&mov (&DWP(-128+4*$rnd++,$key),shift(@T)) if ($i3 eq @T[0]);
}
}
sub _saveround {
my ($rnd,$key,@T)=@_;
my $bias=int(@T[0])?shift(@T):0;
&mov (&DWP($bias+$rnd*8+0,$key),@T[0]);
&mov (&DWP($bias+$rnd*8+4,$key),@T[1]) if ($#T>=1);
&mov (&DWP($bias+$rnd*8+8,$key),@T[2]) if ($#T>=2);
&mov (&DWP($bias+$rnd*8+12,$key),@T[3]) if ($#T>=3);
}
sub _loadround {
my ($rnd,$key,@T)=@_;
my $bias=int(@T[0])?shift(@T):0;
&mov (@T[0],&DWP($bias+$rnd*8+0,$key));
&mov (@T[1],&DWP($bias+$rnd*8+4,$key)) if ($#T>=1);
&mov (@T[2],&DWP($bias+$rnd*8+8,$key)) if ($#T>=2);
&mov (@T[3],&DWP($bias+$rnd*8+12,$key)) if ($#T>=3);
}
# void Camellia_Ekeygen(
# const int keyBitLength,
# const Byte *rawKey,
# KEY_TABLE_TYPE keyTable)
&function_begin("Camellia_Ekeygen");
{ my $step=0;
&stack_push(4); # place for s[0-3]
&mov ($Tbl,&wparam(0)); # load arguments
&mov ($idx,&wparam(1));
&mov ($key,&wparam(2));
&mov (@T[0],&DWP(0,$idx)); # load 0-127 bits
&mov (@T[1],&DWP(4,$idx));
&mov (@T[2],&DWP(8,$idx));
&mov (@T[3],&DWP(12,$idx));
&bswap (@T[0]);
&bswap (@T[1]);
&bswap (@T[2]);
&bswap (@T[3]);
&_saveround (0,$key,@T); # KL<<<0
&cmp ($Tbl,128);
&je (&label("1st128"));
&mov (@T[0],&DWP(16,$idx)); # load 128-191 bits
&mov (@T[1],&DWP(20,$idx));
&cmp ($Tbl,192);
&je (&label("1st192"));
&mov (@T[2],&DWP(24,$idx)); # load 192-255 bits
&mov (@T[3],&DWP(28,$idx));
&jmp (&label("1st256"));
&set_label("1st192",4);
&mov (@T[2],@T[0]);
&mov (@T[3],@T[1]);
&not (@T[2]);
&not (@T[3]);
&set_label("1st256",4);
&bswap (@T[0]);
&bswap (@T[1]);
&bswap (@T[2]);
&bswap (@T[3]);
&_saveround (4,$key,@T); # temporary storage for KR!
&xor (@T[0],&DWP(0*8+0,$key)); # KR^KL
&xor (@T[1],&DWP(0*8+4,$key));
&xor (@T[2],&DWP(1*8+0,$key));
&xor (@T[3],&DWP(1*8+4,$key));
&set_label("1st128",4);
&call (&label("pic_point"));
&set_label("pic_point");
&blindpop($Tbl);
&lea ($Tbl,&DWP(&label("Camellia_SBOX")."-".&label("pic_point"),$Tbl));
&lea ($key,&DWP(&label("Camellia_SIGMA")."-".&label("Camellia_SBOX"),$Tbl));
&mov ($idx,&DWP($step*8,$key)); # prefetch SIGMA[0]
&mov (&swtmp(0),@T[0]); # save s[0-3]
&mov (&swtmp(1),@T[1]);
&mov (&swtmp(2),@T[2]);
&mov (&swtmp(3),@T[3]);
&Camellia_Feistel($step++);
&Camellia_Feistel($step++);
&mov (@T[2],&swtmp(2));
&mov (@T[3],&swtmp(3));
&mov ($idx,&wparam(2));
&xor (@T[0],&DWP(0*8+0,$idx)); # ^KL
&xor (@T[1],&DWP(0*8+4,$idx));
&xor (@T[2],&DWP(1*8+0,$idx));
&xor (@T[3],&DWP(1*8+4,$idx));
&mov ($idx,&DWP($step*8,$key)); # prefetch SIGMA[4]
&mov (&swtmp(0),@T[0]); # save s[0-3]
&mov (&swtmp(1),@T[1]);
&mov (&swtmp(2),@T[2]);
&mov (&swtmp(3),@T[3]);
&Camellia_Feistel($step++);
&Camellia_Feistel($step++);
&mov (@T[2],&swtmp(2));
&mov (@T[3],&swtmp(3));
&mov ($idx,&wparam(0));
&cmp ($idx,128);
&jne (&label("2nd256"));
&mov ($key,&wparam(2));
&lea ($key,&DWP(128,$key)); # size optimization
####### process KA
&_saveround (2,$key,-128,@T); # KA<<<0
&_rotl128 (@T,15,6,@T); # KA<<<15
&_rotl128 (@T,15,8,@T); # KA<<<(15+15=30)
&_rotl128 (@T,15,12,@T[0],@T[1]); # KA<<<(30+15=45)
&_rotl128 (@T,15,14,@T); # KA<<<(45+15=60)
push (@T,shift(@T)); # rotl128(@T,32);
&_rotl128 (@T,2,20,@T); # KA<<<(60+32+2=94)
&_rotl128 (@T,17,24,@T); # KA<<<(94+17=111)
####### process KL
&_loadround (0,$key,-128,@T); # load KL
&_rotl128 (@T,15,4,@T); # KL<<<15
&_rotl128 (@T,30,10,@T); # KL<<<(15+30=45)
&_rotl128 (@T,15,13,@T[2],@T[3]); # KL<<<(45+15=60)
&_rotl128 (@T,17,16,@T); # KL<<<(60+17=77)
&_rotl128 (@T,17,18,@T); # KL<<<(77+17=94)
&_rotl128 (@T,17,22,@T); # KL<<<(94+17=111)
while (@T[0] ne "eax") # restore order
{ unshift (@T,pop(@T)); }
&mov ("eax",3); # 3 grandRounds
&jmp (&label("done"));
&set_label("2nd256",16);
&mov ($idx,&wparam(2));
&_saveround (6,$idx,@T); # temporary storage for KA!
&xor (@T[0],&DWP(4*8+0,$idx)); # KA^KR
&xor (@T[1],&DWP(4*8+4,$idx));
&xor (@T[2],&DWP(5*8+0,$idx));
&xor (@T[3],&DWP(5*8+4,$idx));
&mov ($idx,&DWP($step*8,$key)); # prefetch SIGMA[8]
&mov (&swtmp(0),@T[0]); # save s[0-3]
&mov (&swtmp(1),@T[1]);
&mov (&swtmp(2),@T[2]);
&mov (&swtmp(3),@T[3]);
&Camellia_Feistel($step++);
&Camellia_Feistel($step++);
&mov (@T[2],&swtmp(2));
&mov (@T[3],&swtmp(3));
&mov ($key,&wparam(2));
&lea ($key,&DWP(128,$key)); # size optimization
####### process KB
&_saveround (2,$key,-128,@T); # KB<<<0
&_rotl128 (@T,30,10,@T); # KB<<<30
&_rotl128 (@T,30,20,@T); # KB<<<(30+30=60)
push (@T,shift(@T)); # rotl128(@T,32);
&_rotl128 (@T,19,32,@T); # KB<<<(60+32+19=111)
####### process KR
&_loadround (4,$key,-128,@T); # load KR
&_rotl128 (@T,15,4,@T); # KR<<<15
&_rotl128 (@T,15,8,@T); # KR<<<(15+15=30)
&_rotl128 (@T,30,18,@T); # KR<<<(30+30=60)
push (@T,shift(@T)); # rotl128(@T,32);
&_rotl128 (@T,2,26,@T); # KR<<<(60+32+2=94)
####### process KA
&_loadround (6,$key,-128,@T); # load KA
&_rotl128 (@T,15,6,@T); # KA<<<15
&_rotl128 (@T,30,14,@T); # KA<<<(15+30=45)
push (@T,shift(@T)); # rotl128(@T,32);
&_rotl128 (@T,0,24,@T); # KA<<<(45+32+0=77)
&_rotl128 (@T,17,28,@T); # KA<<<(77+17=94)
####### process KL
&_loadround (0,$key,-128,@T); # load KL
push (@T,shift(@T)); # rotl128(@T,32);
&_rotl128 (@T,13,12,@T); # KL<<<(32+13=45)
&_rotl128 (@T,15,16,@T); # KL<<<(45+15=60)
&_rotl128 (@T,17,22,@T); # KL<<<(60+17=77)
push (@T,shift(@T)); # rotl128(@T,32);
&_rotl128 (@T,2,30,@T); # KL<<<(77+32+2=111)
while (@T[0] ne "eax") # restore order
{ unshift (@T,pop(@T)); }
&mov ("eax",4); # 4 grandRounds
&set_label("done");
&lea ("edx",&DWP(272-128,$key)); # end of key schedule
&stack_pop(4);
}
&function_end("Camellia_Ekeygen");
if ($OPENSSL) {
# int Camellia_set_key (
# const unsigned char *userKey,
# int bits,
# CAMELLIA_KEY *key)
&function_begin_B("Camellia_set_key");
&push ("ebx");
&mov ("ecx",&wparam(0)); # pull arguments
&mov ("ebx",&wparam(1));
&mov ("edx",&wparam(2));
&mov ("eax",-1);
&test ("ecx","ecx");
&jz (&label("done")); # userKey==NULL?
&test ("edx","edx");
&jz (&label("done")); # key==NULL?
&mov ("eax",-2);
&cmp ("ebx",256);
&je (&label("arg_ok")); # bits==256?
&cmp ("ebx",192);
&je (&label("arg_ok")); # bits==192?
&cmp ("ebx",128);
&jne (&label("done")); # bits!=128?
&set_label("arg_ok",4);
&push ("edx"); # push arguments
&push ("ecx");
&push ("ebx");
&call ("Camellia_Ekeygen");
&stack_pop(3);
# eax holds grandRounds and edx points at where to put it
&mov (&DWP(0,"edx"),"eax");
&xor ("eax","eax");
&set_label("done",4);
&pop ("ebx");
&ret ();
&function_end_B("Camellia_set_key");
}
@SBOX=(
112,130, 44,236,179, 39,192,229,228,133, 87, 53,234, 12,174, 65,
35,239,107,147, 69, 25,165, 33,237, 14, 79, 78, 29,101,146,189,
134,184,175,143,124,235, 31,206, 62, 48,220, 95, 94,197, 11, 26,
166,225, 57,202,213, 71, 93, 61,217, 1, 90,214, 81, 86,108, 77,
139, 13,154,102,251,204,176, 45,116, 18, 43, 32,240,177,132,153,
223, 76,203,194, 52,126,118, 5,109,183,169, 49,209, 23, 4,215,
20, 88, 58, 97,222, 27, 17, 28, 50, 15,156, 22, 83, 24,242, 34,
254, 68,207,178,195,181,122,145, 36, 8,232,168, 96,252,105, 80,
170,208,160,125,161,137, 98,151, 84, 91, 30,149,224,255,100,210,
16,196, 0, 72,163,247,117,219,138, 3,230,218, 9, 63,221,148,
135, 92,131, 2,205, 74,144, 51,115,103,246,243,157,127,191,226,
82,155,216, 38,200, 55,198, 59,129,150,111, 75, 19,190, 99, 46,
233,121,167,140,159,110,188,142, 41,245,249,182, 47,253,180, 89,
120,152, 6,106,231, 70,113,186,212, 37,171, 66,136,162,141,250,
114, 7,185, 85,248,238,172, 10, 54, 73, 42,104, 60, 56,241,164,
64, 40,211,123,187,201, 67,193, 21,227,173,244,119,199,128,158);
sub S1110 { my $i=shift; $i=@SBOX[$i]; return $i<<24|$i<<16|$i<<8; }
sub S4404 { my $i=shift; $i=($i<<1|$i>>7)&0xff; $i=@SBOX[$i]; return $i<<24|$i<<16|$i; }
sub S0222 { my $i=shift; $i=@SBOX[$i]; $i=($i<<1|$i>>7)&0xff; return $i<<16|$i<<8|$i; }
sub S3033 { my $i=shift; $i=@SBOX[$i]; $i=($i>>1|$i<<7)&0xff; return $i<<24|$i<<8|$i; }
&set_label("Camellia_SIGMA",64);
&data_word(
0xa09e667f, 0x3bcc908b, 0xb67ae858, 0x4caa73b2,
0xc6ef372f, 0xe94f82be, 0x54ff53a5, 0xf1d36f1c,
0x10e527fa, 0xde682d1d, 0xb05688c2, 0xb3e6c1fd,
0, 0, 0, 0);
&set_label("Camellia_SBOX",64);
# tables are interleaved, remember?
for ($i=0;$i<256;$i++) { &data_word(&S1110($i),&S4404($i)); }
for ($i=0;$i<256;$i++) { &data_word(&S0222($i),&S3033($i)); }
# void Camellia_cbc_encrypt (const void char *inp, unsigned char *out,
# size_t length, const CAMELLIA_KEY *key,
# unsigned char *ivp,const int enc);
{
# stack frame layout
# -4(%esp) # return address 0(%esp)
# 0(%esp) # s0 4(%esp)
# 4(%esp) # s1 8(%esp)
# 8(%esp) # s2 12(%esp)
# 12(%esp) # s3 16(%esp)
# 16(%esp) # end of key schedule 20(%esp)
# 20(%esp) # %esp backup
my $_inp=&DWP(24,"esp"); #copy of wparam(0)
my $_out=&DWP(28,"esp"); #copy of wparam(1)
my $_len=&DWP(32,"esp"); #copy of wparam(2)
my $_key=&DWP(36,"esp"); #copy of wparam(3)
my $_ivp=&DWP(40,"esp"); #copy of wparam(4)
my $ivec=&DWP(44,"esp"); #ivec[16]
my $_tmp=&DWP(44,"esp"); #volatile variable [yes, aliases with ivec]
my ($s0,$s1,$s2,$s3) = @T;
&function_begin("Camellia_cbc_encrypt");
&mov ($s2 eq "ecx"? $s2 : "",&wparam(2)); # load len
&cmp ($s2,0);
&je (&label("enc_out"));
&pushf ();
&cld ();
&mov ($s0,&wparam(0)); # load inp
&mov ($s1,&wparam(1)); # load out
#&mov ($s2,&wparam(2)); # load len
&mov ($s3,&wparam(3)); # load key
&mov ($Tbl,&wparam(4)); # load ivp
# allocate aligned stack frame...
&lea ($idx,&DWP(-64,"esp"));
&and ($idx,-64);
# place stack frame just "above mod 1024" the key schedule
# this ensures that cache associativity of 2 suffices
&lea ($key,&DWP(-64-63,$s3));
&sub ($key,$idx);
&neg ($key);
&and ($key,0x3C0); # modulo 1024, but aligned to cache-line
&sub ($idx,$key);
&mov ($key,&wparam(5)); # load enc
&exch ("esp",$idx);
&add ("esp",4); # reserve for return address!
&mov ($_esp,$idx); # save %esp
&mov ($_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,$Tbl); # save copy of ivp
&call (&label("pic_point")); # make it PIC!
&set_label("pic_point");
&blindpop($Tbl);
&lea ($Tbl,&DWP(&label("Camellia_SBOX")."-".&label("pic_point"),$Tbl));
&mov ($idx,32);
&set_label("prefetch_sbox",4);
&mov ($s0,&DWP(0,$Tbl));
&mov ($s1,&DWP(32,$Tbl));
&mov ($s2,&DWP(64,$Tbl));
&mov ($s3,&DWP(96,$Tbl));
&lea ($Tbl,&DWP(128,$Tbl));
&dec ($idx);
&jnz (&label("prefetch_sbox"));
&mov ($s0,$_key);
&sub ($Tbl,4096);
&mov ($idx,$_inp);
&mov ($s3,&DWP(272,$s0)); # load grandRounds
&cmp ($key,0);
&je (&label("DECRYPT"));
&mov ($s2,$_len);
&mov ($key,$_ivp);
&shl ($s3,6);
&lea ($s3,&DWP(0,$s0,$s3));
&mov ($_end,$s3);
&test ($s2,0xFFFFFFF0);
&jz (&label("enc_tail")); # short input...
&mov ($s0,&DWP(0,$key)); # load iv
&mov ($s1,&DWP(4,$key));
&set_label("enc_loop",4);
&mov ($s2,&DWP(8,$key));
&mov ($s3,&DWP(12,$key));
&xor ($s0,&DWP(0,$idx)); # xor input data
&xor ($s1,&DWP(4,$idx));
&xor ($s2,&DWP(8,$idx));
&bswap ($s0);
&xor ($s3,&DWP(12,$idx));
&bswap ($s1);
&mov ($key,$_key); # load key
&bswap ($s2);
&bswap ($s3);
&call ("_x86_Camellia_encrypt");
&mov ($idx,$_inp); # load inp
&mov ($key,$_out); # load out
&bswap ($s0);
&bswap ($s1);
&bswap ($s2);
&mov (&DWP(0,$key),$s0); # save output data
&bswap ($s3);
&mov (&DWP(4,$key),$s1);
&mov (&DWP(8,$key),$s2);
&mov (&DWP(12,$key),$s3);
&mov ($s2,$_len); # load len
&lea ($idx,&DWP(16,$idx));
&mov ($_inp,$idx); # save inp
&lea ($s3,&DWP(16,$key));
&mov ($_out,$s3); # save out
&sub ($s2,16);
&test ($s2,0xFFFFFFF0);
&mov ($_len,$s2); # save len
&jnz (&label("enc_loop"));
&test ($s2,15);
&jnz (&label("enc_tail"));
&mov ($idx,$_ivp); # load ivp
&mov ($s2,&DWP(8,$key)); # restore last dwords
&mov ($s3,&DWP(12,$key));
&mov (&DWP(0,$idx),$s0); # save ivec
&mov (&DWP(4,$idx),$s1);
&mov (&DWP(8,$idx),$s2);
&mov (&DWP(12,$idx),$s3);
&mov ("esp",$_esp);
&popf ();
&set_label("enc_out");
&function_end_A();
&pushf (); # kludge, never executed
&set_label("enc_tail",4);
&mov ($s0,$key eq "edi" ? $key : "");
&mov ($key,$_out); # load out
&push ($s0); # push ivp
&mov ($s1,16);
&sub ($s1,$s2);
&cmp ($key,$idx); # compare with inp
&je (&label("enc_in_place"));
&align (4);
&data_word(0xA4F3F689); # rep movsb # copy input
&jmp (&label("enc_skip_in_place"));
&set_label("enc_in_place");
&lea ($key,&DWP(0,$key,$s2));
&set_label("enc_skip_in_place");
&mov ($s2,$s1);
&xor ($s0,$s0);
&align (4);
&data_word(0xAAF3F689); # rep stosb # zero tail
&pop ($key); # pop ivp
&mov ($idx,$_out); # output as input
&mov ($s0,&DWP(0,$key));
&mov ($s1,&DWP(4,$key));
&mov ($_len,16); # len=16
&jmp (&label("enc_loop")); # one more spin...
#----------------------------- DECRYPT -----------------------------#
&set_label("DECRYPT",16);
&shl ($s3,6);
&lea ($s3,&DWP(0,$s0,$s3));
&mov ($_end,$s0);
&mov ($_key,$s3);
&cmp ($idx,$_out);
&je (&label("dec_in_place")); # in-place processing...
&mov ($key,$_ivp); # load ivp
&mov ($_tmp,$key);
&set_label("dec_loop",4);
&mov ($s0,&DWP(0,$idx)); # read input
&mov ($s1,&DWP(4,$idx));
&mov ($s2,&DWP(8,$idx));
&bswap ($s0);
&mov ($s3,&DWP(12,$idx));
&bswap ($s1);
&mov ($key,$_key); # load key
&bswap ($s2);
&bswap ($s3);
&call ("_x86_Camellia_decrypt");
&mov ($key,$_tmp); # load ivp
&mov ($idx,$_len); # load len
&bswap ($s0);
&bswap ($s1);
&bswap ($s2);
&xor ($s0,&DWP(0,$key)); # xor iv
&bswap ($s3);
&xor ($s1,&DWP(4,$key));
&xor ($s2,&DWP(8,$key));
&xor ($s3,&DWP(12,$key));
&sub ($idx,16);
&jc (&label("dec_partial"));
&mov ($_len,$idx); # save len
&mov ($idx,$_inp); # load inp
&mov ($key,$_out); # load out
&mov (&DWP(0,$key),$s0); # write output
&mov (&DWP(4,$key),$s1);
&mov (&DWP(8,$key),$s2);
&mov (&DWP(12,$key),$s3);
&mov ($_tmp,$idx); # save ivp
&lea ($idx,&DWP(16,$idx));
&mov ($_inp,$idx); # save inp
&lea ($key,&DWP(16,$key));
&mov ($_out,$key); # save out
&jnz (&label("dec_loop"));
&mov ($key,$_tmp); # load temp ivp
&set_label("dec_end");
&mov ($idx,$_ivp); # load user ivp
&mov ($s0,&DWP(0,$key)); # load iv
&mov ($s1,&DWP(4,$key));
&mov ($s2,&DWP(8,$key));
&mov ($s3,&DWP(12,$key));
&mov (&DWP(0,$idx),$s0); # copy back to user
&mov (&DWP(4,$idx),$s1);
&mov (&DWP(8,$idx),$s2);
&mov (&DWP(12,$idx),$s3);
&jmp (&label("dec_out"));
&set_label("dec_partial",4);
&lea ($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" ? $s2 : "",&DWP(16,$idx));
&mov ($idx eq "esi" ? $idx : "",$key);
&mov ($key eq "edi" ? $key : "",$_out); # load out
&data_word(0xA4F3F689); # rep movsb # copy output
&mov ($key,$_inp); # use inp as temp ivp
&jmp (&label("dec_end"));
&set_label("dec_in_place",4);
&set_label("dec_in_place_loop");
&lea ($key,$ivec);
&mov ($s0,&DWP(0,$idx)); # read input
&mov ($s1,&DWP(4,$idx));
&mov ($s2,&DWP(8,$idx));
&mov ($s3,&DWP(12,$idx));
&mov (&DWP(0,$key),$s0); # copy to temp
&mov (&DWP(4,$key),$s1);
&mov (&DWP(8,$key),$s2);
&bswap ($s0);
&mov (&DWP(12,$key),$s3);
&bswap ($s1);
&mov ($key,$_key); # load key
&bswap ($s2);
&bswap ($s3);
&call ("_x86_Camellia_decrypt");
&mov ($key,$_ivp); # load ivp
&mov ($idx,$_out); # load out
&bswap ($s0);
&bswap ($s1);
&bswap ($s2);
&xor ($s0,&DWP(0,$key)); # xor iv
&bswap ($s3);
&xor ($s1,&DWP(4,$key));
&xor ($s2,&DWP(8,$key));
&xor ($s3,&DWP(12,$key));
&mov (&DWP(0,$idx),$s0); # write output
&mov (&DWP(4,$idx),$s1);
&mov (&DWP(8,$idx),$s2);
&mov (&DWP(12,$idx),$s3);
&lea ($idx,&DWP(16,$idx));
&mov ($_out,$idx); # save out
&lea ($idx,$ivec);
&mov ($s0,&DWP(0,$idx)); # read temp
&mov ($s1,&DWP(4,$idx));
&mov ($s2,&DWP(8,$idx));
&mov ($s3,&DWP(12,$idx));
&mov (&DWP(0,$key),$s0); # copy iv
&mov (&DWP(4,$key),$s1);
&mov (&DWP(8,$key),$s2);
&mov (&DWP(12,$key),$s3);
&mov ($idx,$_inp); # load inp
&lea ($idx,&DWP(16,$idx));
&mov ($_inp,$idx); # save inp
&mov ($s2,$_len); # load len
&sub ($s2,16);
&jc (&label("dec_in_place_partial"));
&mov ($_len,$s2); # save len
&jnz (&label("dec_in_place_loop"));
&jmp (&label("dec_out"));
&set_label("dec_in_place_partial",4);
# one can argue if this is actually required...
&mov ($key eq "edi" ? $key : "",$_out);
&lea ($idx eq "esi" ? $idx : "",$ivec);
&lea ($key,&DWP(0,$key,$s2));
&lea ($idx,&DWP(16,$idx,$s2));
&neg ($s2 eq "ecx" ? $s2 : "");
&data_word(0xA4F3F689); # rep movsb # restore tail
&set_label("dec_out",4);
&mov ("esp",$_esp);
&popf ();
&function_end("Camellia_cbc_encrypt");
}
&asciz("Camellia for x86 by <appro\@openssl.org>");
&asm_finish();
close STDOUT or die "error closing STDOUT: $!";