2190 lines
66 KiB
Perl
2190 lines
66 KiB
Perl
#!/usr/bin/env perl
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# ====================================================================
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# Written by Andy Polyakov <appro@openssl.org> for the OpenSSL
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# project. The module is, however, dual licensed under OpenSSL and
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# CRYPTOGAMS licenses depending on where you obtain it. For further
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# details see http://www.openssl.org/~appro/cryptogams/.
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# ====================================================================
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#
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# This module implements support for Intel AES-NI extension. In
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# OpenSSL context it's used with Intel engine, but can also be used as
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# drop-in replacement for crypto/aes/asm/aes-586.pl [see below for
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# details].
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#
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# Performance.
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#
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# To start with see corresponding paragraph in aesni-x86_64.pl...
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# Instead of filling table similar to one found there I've chosen to
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# summarize *comparison* results for raw ECB, CTR and CBC benchmarks.
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# The simplified table below represents 32-bit performance relative
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# to 64-bit one in every given point. Ratios vary for different
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# encryption modes, therefore interval values.
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#
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# 16-byte 64-byte 256-byte 1-KB 8-KB
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# 53-67% 67-84% 91-94% 95-98% 97-99.5%
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#
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# Lower ratios for smaller block sizes are perfectly understandable,
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# because function call overhead is higher in 32-bit mode. Largest
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# 8-KB block performance is virtually same: 32-bit code is less than
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# 1% slower for ECB, CBC and CCM, and ~3% slower otherwise.
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# January 2011
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#
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# See aesni-x86_64.pl for details. Unlike x86_64 version this module
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# interleaves at most 6 aes[enc|dec] instructions, because there are
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# not enough registers for 8x interleave [which should be optimal for
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# Sandy Bridge]. Actually, performance results for 6x interleave
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# factor presented in aesni-x86_64.pl (except for CTR) are for this
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# module.
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# April 2011
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#
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# Add aesni_xts_[en|de]crypt. Westmere spends 1.50 cycles processing
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# one byte out of 8KB with 128-bit key, Sandy Bridge - 1.09.
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$PREFIX="aesni"; # if $PREFIX is set to "AES", the script
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# generates drop-in replacement for
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# crypto/aes/asm/aes-586.pl:-)
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$inline=1; # inline _aesni_[en|de]crypt
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$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
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push(@INC,"${dir}","${dir}../../perlasm");
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require "x86asm.pl";
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&asm_init($ARGV[0],$0);
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if ($PREFIX eq "aesni") { $movekey=\&movups; }
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else { $movekey=\&movups; }
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$len="eax";
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$rounds="ecx";
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$key="edx";
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$inp="esi";
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$out="edi";
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$rounds_="ebx"; # backup copy for $rounds
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$key_="ebp"; # backup copy for $key
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$rndkey0="xmm0";
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$rndkey1="xmm1";
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$inout0="xmm2";
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$inout1="xmm3";
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$inout2="xmm4";
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$inout3="xmm5"; $in1="xmm5";
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$inout4="xmm6"; $in0="xmm6";
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$inout5="xmm7"; $ivec="xmm7";
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# AESNI extenstion
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sub aeskeygenassist
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{ my($dst,$src,$imm)=@_;
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if ("$dst:$src" =~ /xmm([0-7]):xmm([0-7])/)
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{ &data_byte(0x66,0x0f,0x3a,0xdf,0xc0|($1<<3)|$2,$imm); }
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}
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sub aescommon
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{ my($opcodelet,$dst,$src)=@_;
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if ("$dst:$src" =~ /xmm([0-7]):xmm([0-7])/)
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{ &data_byte(0x66,0x0f,0x38,$opcodelet,0xc0|($1<<3)|$2);}
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}
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sub aesimc { aescommon(0xdb,@_); }
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sub aesenc { aescommon(0xdc,@_); }
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sub aesenclast { aescommon(0xdd,@_); }
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sub aesdec { aescommon(0xde,@_); }
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sub aesdeclast { aescommon(0xdf,@_); }
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# Inline version of internal aesni_[en|de]crypt1
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{ my $sn;
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sub aesni_inline_generate1
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{ my ($p,$inout,$ivec)=@_; $inout=$inout0 if (!defined($inout));
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$sn++;
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&$movekey ($rndkey0,&QWP(0,$key));
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&$movekey ($rndkey1,&QWP(16,$key));
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&xorps ($ivec,$rndkey0) if (defined($ivec));
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&lea ($key,&DWP(32,$key));
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&xorps ($inout,$ivec) if (defined($ivec));
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&xorps ($inout,$rndkey0) if (!defined($ivec));
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&set_label("${p}1_loop_$sn");
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eval"&aes${p} ($inout,$rndkey1)";
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&dec ($rounds);
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&$movekey ($rndkey1,&QWP(0,$key));
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&lea ($key,&DWP(16,$key));
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&jnz (&label("${p}1_loop_$sn"));
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eval"&aes${p}last ($inout,$rndkey1)";
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}}
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sub aesni_generate1 # fully unrolled loop
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{ my ($p,$inout)=@_; $inout=$inout0 if (!defined($inout));
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&function_begin_B("_aesni_${p}rypt1");
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&movups ($rndkey0,&QWP(0,$key));
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&$movekey ($rndkey1,&QWP(0x10,$key));
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&xorps ($inout,$rndkey0);
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&$movekey ($rndkey0,&QWP(0x20,$key));
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&lea ($key,&DWP(0x30,$key));
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&cmp ($rounds,11);
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&jb (&label("${p}128"));
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&lea ($key,&DWP(0x20,$key));
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&je (&label("${p}192"));
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&lea ($key,&DWP(0x20,$key));
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eval"&aes${p} ($inout,$rndkey1)";
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&$movekey ($rndkey1,&QWP(-0x40,$key));
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eval"&aes${p} ($inout,$rndkey0)";
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&$movekey ($rndkey0,&QWP(-0x30,$key));
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&set_label("${p}192");
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eval"&aes${p} ($inout,$rndkey1)";
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&$movekey ($rndkey1,&QWP(-0x20,$key));
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eval"&aes${p} ($inout,$rndkey0)";
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&$movekey ($rndkey0,&QWP(-0x10,$key));
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&set_label("${p}128");
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eval"&aes${p} ($inout,$rndkey1)";
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&$movekey ($rndkey1,&QWP(0,$key));
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eval"&aes${p} ($inout,$rndkey0)";
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&$movekey ($rndkey0,&QWP(0x10,$key));
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eval"&aes${p} ($inout,$rndkey1)";
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&$movekey ($rndkey1,&QWP(0x20,$key));
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eval"&aes${p} ($inout,$rndkey0)";
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&$movekey ($rndkey0,&QWP(0x30,$key));
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eval"&aes${p} ($inout,$rndkey1)";
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&$movekey ($rndkey1,&QWP(0x40,$key));
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eval"&aes${p} ($inout,$rndkey0)";
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&$movekey ($rndkey0,&QWP(0x50,$key));
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eval"&aes${p} ($inout,$rndkey1)";
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&$movekey ($rndkey1,&QWP(0x60,$key));
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eval"&aes${p} ($inout,$rndkey0)";
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&$movekey ($rndkey0,&QWP(0x70,$key));
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eval"&aes${p} ($inout,$rndkey1)";
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eval"&aes${p}last ($inout,$rndkey0)";
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&ret();
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&function_end_B("_aesni_${p}rypt1");
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}
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# void $PREFIX_encrypt (const void *inp,void *out,const AES_KEY *key);
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&aesni_generate1("enc") if (!$inline);
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&function_begin_B("${PREFIX}_encrypt");
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&mov ("eax",&wparam(0));
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&mov ($key,&wparam(2));
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&movups ($inout0,&QWP(0,"eax"));
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&mov ($rounds,&DWP(240,$key));
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&mov ("eax",&wparam(1));
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if ($inline)
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{ &aesni_inline_generate1("enc"); }
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else
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{ &call ("_aesni_encrypt1"); }
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&movups (&QWP(0,"eax"),$inout0);
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&ret ();
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&function_end_B("${PREFIX}_encrypt");
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# void $PREFIX_decrypt (const void *inp,void *out,const AES_KEY *key);
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&aesni_generate1("dec") if(!$inline);
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&function_begin_B("${PREFIX}_decrypt");
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&mov ("eax",&wparam(0));
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&mov ($key,&wparam(2));
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&movups ($inout0,&QWP(0,"eax"));
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&mov ($rounds,&DWP(240,$key));
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&mov ("eax",&wparam(1));
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if ($inline)
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{ &aesni_inline_generate1("dec"); }
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else
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{ &call ("_aesni_decrypt1"); }
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&movups (&QWP(0,"eax"),$inout0);
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&ret ();
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&function_end_B("${PREFIX}_decrypt");
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# _aesni_[en|de]cryptN are private interfaces, N denotes interleave
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# factor. Why 3x subroutine were originally used in loops? Even though
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# aes[enc|dec] latency was originally 6, it could be scheduled only
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# every *2nd* cycle. Thus 3x interleave was the one providing optimal
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# utilization, i.e. when subroutine's throughput is virtually same as
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# of non-interleaved subroutine [for number of input blocks up to 3].
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# This is why it makes no sense to implement 2x subroutine.
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# aes[enc|dec] latency in next processor generation is 8, but the
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# instructions can be scheduled every cycle. Optimal interleave for
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# new processor is therefore 8x, but it's unfeasible to accommodate it
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# in XMM registers addreassable in 32-bit mode and therefore 6x is
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# used instead...
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sub aesni_generate3
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{ my $p=shift;
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&function_begin_B("_aesni_${p}rypt3");
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&$movekey ($rndkey0,&QWP(0,$key));
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&shl ($rounds,4);
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&$movekey ($rndkey1,&QWP(16,$key));
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&xorps ($inout0,$rndkey0);
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&pxor ($inout1,$rndkey0);
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&pxor ($inout2,$rndkey0);
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&$movekey ($rndkey0,&QWP(32,$key));
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&lea ($key,&DWP(32,$key,$rounds));
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&neg ($rounds);
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&add ($rounds,16);
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&set_label("${p}3_loop");
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eval"&aes${p} ($inout0,$rndkey1)";
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eval"&aes${p} ($inout1,$rndkey1)";
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eval"&aes${p} ($inout2,$rndkey1)";
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&$movekey ($rndkey1,&QWP(0,$key,$rounds));
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&add ($rounds,32);
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eval"&aes${p} ($inout0,$rndkey0)";
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eval"&aes${p} ($inout1,$rndkey0)";
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eval"&aes${p} ($inout2,$rndkey0)";
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&$movekey ($rndkey0,&QWP(-16,$key,$rounds));
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&jnz (&label("${p}3_loop"));
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eval"&aes${p} ($inout0,$rndkey1)";
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eval"&aes${p} ($inout1,$rndkey1)";
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eval"&aes${p} ($inout2,$rndkey1)";
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eval"&aes${p}last ($inout0,$rndkey0)";
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eval"&aes${p}last ($inout1,$rndkey0)";
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eval"&aes${p}last ($inout2,$rndkey0)";
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&ret();
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&function_end_B("_aesni_${p}rypt3");
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}
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# 4x interleave is implemented to improve small block performance,
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# most notably [and naturally] 4 block by ~30%. One can argue that one
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# should have implemented 5x as well, but improvement would be <20%,
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# so it's not worth it...
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sub aesni_generate4
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{ my $p=shift;
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&function_begin_B("_aesni_${p}rypt4");
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&$movekey ($rndkey0,&QWP(0,$key));
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&$movekey ($rndkey1,&QWP(16,$key));
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&shl ($rounds,4);
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&xorps ($inout0,$rndkey0);
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&pxor ($inout1,$rndkey0);
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&pxor ($inout2,$rndkey0);
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&pxor ($inout3,$rndkey0);
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&$movekey ($rndkey0,&QWP(32,$key));
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&lea ($key,&DWP(32,$key,$rounds));
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&neg ($rounds);
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&data_byte (0x0f,0x1f,0x40,0x00);
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&add ($rounds,16);
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&set_label("${p}4_loop");
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eval"&aes${p} ($inout0,$rndkey1)";
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eval"&aes${p} ($inout1,$rndkey1)";
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eval"&aes${p} ($inout2,$rndkey1)";
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eval"&aes${p} ($inout3,$rndkey1)";
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&$movekey ($rndkey1,&QWP(0,$key,$rounds));
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&add ($rounds,32);
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eval"&aes${p} ($inout0,$rndkey0)";
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eval"&aes${p} ($inout1,$rndkey0)";
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eval"&aes${p} ($inout2,$rndkey0)";
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eval"&aes${p} ($inout3,$rndkey0)";
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&$movekey ($rndkey0,&QWP(-16,$key,$rounds));
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&jnz (&label("${p}4_loop"));
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eval"&aes${p} ($inout0,$rndkey1)";
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eval"&aes${p} ($inout1,$rndkey1)";
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eval"&aes${p} ($inout2,$rndkey1)";
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eval"&aes${p} ($inout3,$rndkey1)";
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eval"&aes${p}last ($inout0,$rndkey0)";
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eval"&aes${p}last ($inout1,$rndkey0)";
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eval"&aes${p}last ($inout2,$rndkey0)";
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eval"&aes${p}last ($inout3,$rndkey0)";
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&ret();
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&function_end_B("_aesni_${p}rypt4");
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}
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sub aesni_generate6
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{ my $p=shift;
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&function_begin_B("_aesni_${p}rypt6");
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&static_label("_aesni_${p}rypt6_enter");
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&$movekey ($rndkey0,&QWP(0,$key));
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&shl ($rounds,4);
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&$movekey ($rndkey1,&QWP(16,$key));
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&xorps ($inout0,$rndkey0);
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&pxor ($inout1,$rndkey0); # pxor does better here
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&pxor ($inout2,$rndkey0);
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eval"&aes${p} ($inout0,$rndkey1)";
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&pxor ($inout3,$rndkey0);
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&pxor ($inout4,$rndkey0);
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eval"&aes${p} ($inout1,$rndkey1)";
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&lea ($key,&DWP(32,$key,$rounds));
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&neg ($rounds);
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eval"&aes${p} ($inout2,$rndkey1)";
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&pxor ($inout5,$rndkey0);
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&add ($rounds,16);
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eval"&aes${p} ($inout3,$rndkey1)";
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eval"&aes${p} ($inout4,$rndkey1)";
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eval"&aes${p} ($inout5,$rndkey1)";
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&$movekey ($rndkey0,&QWP(-16,$key,$rounds));
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&jmp (&label("_aesni_${p}rypt6_enter"));
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&set_label("${p}6_loop",16);
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eval"&aes${p} ($inout0,$rndkey1)";
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eval"&aes${p} ($inout1,$rndkey1)";
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eval"&aes${p} ($inout2,$rndkey1)";
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eval"&aes${p} ($inout3,$rndkey1)";
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eval"&aes${p} ($inout4,$rndkey1)";
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eval"&aes${p} ($inout5,$rndkey1)";
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&set_label("_aesni_${p}rypt6_enter");
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&$movekey ($rndkey1,&QWP(0,$key,$rounds));
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&add ($rounds,32);
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eval"&aes${p} ($inout0,$rndkey0)";
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eval"&aes${p} ($inout1,$rndkey0)";
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eval"&aes${p} ($inout2,$rndkey0)";
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eval"&aes${p} ($inout3,$rndkey0)";
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eval"&aes${p} ($inout4,$rndkey0)";
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eval"&aes${p} ($inout5,$rndkey0)";
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&$movekey ($rndkey0,&QWP(-16,$key,$rounds));
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&jnz (&label("${p}6_loop"));
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eval"&aes${p} ($inout0,$rndkey1)";
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eval"&aes${p} ($inout1,$rndkey1)";
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eval"&aes${p} ($inout2,$rndkey1)";
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eval"&aes${p} ($inout3,$rndkey1)";
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eval"&aes${p} ($inout4,$rndkey1)";
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eval"&aes${p} ($inout5,$rndkey1)";
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eval"&aes${p}last ($inout0,$rndkey0)";
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eval"&aes${p}last ($inout1,$rndkey0)";
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eval"&aes${p}last ($inout2,$rndkey0)";
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eval"&aes${p}last ($inout3,$rndkey0)";
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eval"&aes${p}last ($inout4,$rndkey0)";
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eval"&aes${p}last ($inout5,$rndkey0)";
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&ret();
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&function_end_B("_aesni_${p}rypt6");
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}
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&aesni_generate3("enc") if ($PREFIX eq "aesni");
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&aesni_generate3("dec");
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&aesni_generate4("enc") if ($PREFIX eq "aesni");
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&aesni_generate4("dec");
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&aesni_generate6("enc") if ($PREFIX eq "aesni");
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&aesni_generate6("dec");
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|
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if ($PREFIX eq "aesni") {
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######################################################################
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# void aesni_ecb_encrypt (const void *in, void *out,
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# size_t length, const AES_KEY *key,
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# int enc);
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&function_begin("aesni_ecb_encrypt");
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&mov ($inp,&wparam(0));
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&mov ($out,&wparam(1));
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&mov ($len,&wparam(2));
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&mov ($key,&wparam(3));
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&mov ($rounds_,&wparam(4));
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&and ($len,-16);
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&jz (&label("ecb_ret"));
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&mov ($rounds,&DWP(240,$key));
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&test ($rounds_,$rounds_);
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&jz (&label("ecb_decrypt"));
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&mov ($key_,$key); # backup $key
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&mov ($rounds_,$rounds); # backup $rounds
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&cmp ($len,0x60);
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&jb (&label("ecb_enc_tail"));
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&movdqu ($inout0,&QWP(0,$inp));
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&movdqu ($inout1,&QWP(0x10,$inp));
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&movdqu ($inout2,&QWP(0x20,$inp));
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&movdqu ($inout3,&QWP(0x30,$inp));
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&movdqu ($inout4,&QWP(0x40,$inp));
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&movdqu ($inout5,&QWP(0x50,$inp));
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&lea ($inp,&DWP(0x60,$inp));
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&sub ($len,0x60);
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&jmp (&label("ecb_enc_loop6_enter"));
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&set_label("ecb_enc_loop6",16);
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&movups (&QWP(0,$out),$inout0);
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&movdqu ($inout0,&QWP(0,$inp));
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&movups (&QWP(0x10,$out),$inout1);
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&movdqu ($inout1,&QWP(0x10,$inp));
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&movups (&QWP(0x20,$out),$inout2);
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&movdqu ($inout2,&QWP(0x20,$inp));
|
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&movups (&QWP(0x30,$out),$inout3);
|
||
&movdqu ($inout3,&QWP(0x30,$inp));
|
||
&movups (&QWP(0x40,$out),$inout4);
|
||
&movdqu ($inout4,&QWP(0x40,$inp));
|
||
&movups (&QWP(0x50,$out),$inout5);
|
||
&lea ($out,&DWP(0x60,$out));
|
||
&movdqu ($inout5,&QWP(0x50,$inp));
|
||
&lea ($inp,&DWP(0x60,$inp));
|
||
&set_label("ecb_enc_loop6_enter");
|
||
|
||
&call ("_aesni_encrypt6");
|
||
|
||
&mov ($key,$key_); # restore $key
|
||
&mov ($rounds,$rounds_); # restore $rounds
|
||
&sub ($len,0x60);
|
||
&jnc (&label("ecb_enc_loop6"));
|
||
|
||
&movups (&QWP(0,$out),$inout0);
|
||
&movups (&QWP(0x10,$out),$inout1);
|
||
&movups (&QWP(0x20,$out),$inout2);
|
||
&movups (&QWP(0x30,$out),$inout3);
|
||
&movups (&QWP(0x40,$out),$inout4);
|
||
&movups (&QWP(0x50,$out),$inout5);
|
||
&lea ($out,&DWP(0x60,$out));
|
||
&add ($len,0x60);
|
||
&jz (&label("ecb_ret"));
|
||
|
||
&set_label("ecb_enc_tail");
|
||
&movups ($inout0,&QWP(0,$inp));
|
||
&cmp ($len,0x20);
|
||
&jb (&label("ecb_enc_one"));
|
||
&movups ($inout1,&QWP(0x10,$inp));
|
||
&je (&label("ecb_enc_two"));
|
||
&movups ($inout2,&QWP(0x20,$inp));
|
||
&cmp ($len,0x40);
|
||
&jb (&label("ecb_enc_three"));
|
||
&movups ($inout3,&QWP(0x30,$inp));
|
||
&je (&label("ecb_enc_four"));
|
||
&movups ($inout4,&QWP(0x40,$inp));
|
||
&xorps ($inout5,$inout5);
|
||
&call ("_aesni_encrypt6");
|
||
&movups (&QWP(0,$out),$inout0);
|
||
&movups (&QWP(0x10,$out),$inout1);
|
||
&movups (&QWP(0x20,$out),$inout2);
|
||
&movups (&QWP(0x30,$out),$inout3);
|
||
&movups (&QWP(0x40,$out),$inout4);
|
||
jmp (&label("ecb_ret"));
|
||
|
||
&set_label("ecb_enc_one",16);
|
||
if ($inline)
|
||
{ &aesni_inline_generate1("enc"); }
|
||
else
|
||
{ &call ("_aesni_encrypt1"); }
|
||
&movups (&QWP(0,$out),$inout0);
|
||
&jmp (&label("ecb_ret"));
|
||
|
||
&set_label("ecb_enc_two",16);
|
||
&xorps ($inout2,$inout2);
|
||
&call ("_aesni_encrypt3");
|
||
&movups (&QWP(0,$out),$inout0);
|
||
&movups (&QWP(0x10,$out),$inout1);
|
||
&jmp (&label("ecb_ret"));
|
||
|
||
&set_label("ecb_enc_three",16);
|
||
&call ("_aesni_encrypt3");
|
||
&movups (&QWP(0,$out),$inout0);
|
||
&movups (&QWP(0x10,$out),$inout1);
|
||
&movups (&QWP(0x20,$out),$inout2);
|
||
&jmp (&label("ecb_ret"));
|
||
|
||
&set_label("ecb_enc_four",16);
|
||
&call ("_aesni_encrypt4");
|
||
&movups (&QWP(0,$out),$inout0);
|
||
&movups (&QWP(0x10,$out),$inout1);
|
||
&movups (&QWP(0x20,$out),$inout2);
|
||
&movups (&QWP(0x30,$out),$inout3);
|
||
&jmp (&label("ecb_ret"));
|
||
######################################################################
|
||
&set_label("ecb_decrypt",16);
|
||
&mov ($key_,$key); # backup $key
|
||
&mov ($rounds_,$rounds); # backup $rounds
|
||
&cmp ($len,0x60);
|
||
&jb (&label("ecb_dec_tail"));
|
||
|
||
&movdqu ($inout0,&QWP(0,$inp));
|
||
&movdqu ($inout1,&QWP(0x10,$inp));
|
||
&movdqu ($inout2,&QWP(0x20,$inp));
|
||
&movdqu ($inout3,&QWP(0x30,$inp));
|
||
&movdqu ($inout4,&QWP(0x40,$inp));
|
||
&movdqu ($inout5,&QWP(0x50,$inp));
|
||
&lea ($inp,&DWP(0x60,$inp));
|
||
&sub ($len,0x60);
|
||
&jmp (&label("ecb_dec_loop6_enter"));
|
||
|
||
&set_label("ecb_dec_loop6",16);
|
||
&movups (&QWP(0,$out),$inout0);
|
||
&movdqu ($inout0,&QWP(0,$inp));
|
||
&movups (&QWP(0x10,$out),$inout1);
|
||
&movdqu ($inout1,&QWP(0x10,$inp));
|
||
&movups (&QWP(0x20,$out),$inout2);
|
||
&movdqu ($inout2,&QWP(0x20,$inp));
|
||
&movups (&QWP(0x30,$out),$inout3);
|
||
&movdqu ($inout3,&QWP(0x30,$inp));
|
||
&movups (&QWP(0x40,$out),$inout4);
|
||
&movdqu ($inout4,&QWP(0x40,$inp));
|
||
&movups (&QWP(0x50,$out),$inout5);
|
||
&lea ($out,&DWP(0x60,$out));
|
||
&movdqu ($inout5,&QWP(0x50,$inp));
|
||
&lea ($inp,&DWP(0x60,$inp));
|
||
&set_label("ecb_dec_loop6_enter");
|
||
|
||
&call ("_aesni_decrypt6");
|
||
|
||
&mov ($key,$key_); # restore $key
|
||
&mov ($rounds,$rounds_); # restore $rounds
|
||
&sub ($len,0x60);
|
||
&jnc (&label("ecb_dec_loop6"));
|
||
|
||
&movups (&QWP(0,$out),$inout0);
|
||
&movups (&QWP(0x10,$out),$inout1);
|
||
&movups (&QWP(0x20,$out),$inout2);
|
||
&movups (&QWP(0x30,$out),$inout3);
|
||
&movups (&QWP(0x40,$out),$inout4);
|
||
&movups (&QWP(0x50,$out),$inout5);
|
||
&lea ($out,&DWP(0x60,$out));
|
||
&add ($len,0x60);
|
||
&jz (&label("ecb_ret"));
|
||
|
||
&set_label("ecb_dec_tail");
|
||
&movups ($inout0,&QWP(0,$inp));
|
||
&cmp ($len,0x20);
|
||
&jb (&label("ecb_dec_one"));
|
||
&movups ($inout1,&QWP(0x10,$inp));
|
||
&je (&label("ecb_dec_two"));
|
||
&movups ($inout2,&QWP(0x20,$inp));
|
||
&cmp ($len,0x40);
|
||
&jb (&label("ecb_dec_three"));
|
||
&movups ($inout3,&QWP(0x30,$inp));
|
||
&je (&label("ecb_dec_four"));
|
||
&movups ($inout4,&QWP(0x40,$inp));
|
||
&xorps ($inout5,$inout5);
|
||
&call ("_aesni_decrypt6");
|
||
&movups (&QWP(0,$out),$inout0);
|
||
&movups (&QWP(0x10,$out),$inout1);
|
||
&movups (&QWP(0x20,$out),$inout2);
|
||
&movups (&QWP(0x30,$out),$inout3);
|
||
&movups (&QWP(0x40,$out),$inout4);
|
||
&jmp (&label("ecb_ret"));
|
||
|
||
&set_label("ecb_dec_one",16);
|
||
if ($inline)
|
||
{ &aesni_inline_generate1("dec"); }
|
||
else
|
||
{ &call ("_aesni_decrypt1"); }
|
||
&movups (&QWP(0,$out),$inout0);
|
||
&jmp (&label("ecb_ret"));
|
||
|
||
&set_label("ecb_dec_two",16);
|
||
&xorps ($inout2,$inout2);
|
||
&call ("_aesni_decrypt3");
|
||
&movups (&QWP(0,$out),$inout0);
|
||
&movups (&QWP(0x10,$out),$inout1);
|
||
&jmp (&label("ecb_ret"));
|
||
|
||
&set_label("ecb_dec_three",16);
|
||
&call ("_aesni_decrypt3");
|
||
&movups (&QWP(0,$out),$inout0);
|
||
&movups (&QWP(0x10,$out),$inout1);
|
||
&movups (&QWP(0x20,$out),$inout2);
|
||
&jmp (&label("ecb_ret"));
|
||
|
||
&set_label("ecb_dec_four",16);
|
||
&call ("_aesni_decrypt4");
|
||
&movups (&QWP(0,$out),$inout0);
|
||
&movups (&QWP(0x10,$out),$inout1);
|
||
&movups (&QWP(0x20,$out),$inout2);
|
||
&movups (&QWP(0x30,$out),$inout3);
|
||
|
||
&set_label("ecb_ret");
|
||
&function_end("aesni_ecb_encrypt");
|
||
|
||
######################################################################
|
||
# void aesni_ccm64_[en|de]crypt_blocks (const void *in, void *out,
|
||
# size_t blocks, const AES_KEY *key,
|
||
# const char *ivec,char *cmac);
|
||
#
|
||
# Handles only complete blocks, operates on 64-bit counter and
|
||
# does not update *ivec! Nor does it finalize CMAC value
|
||
# (see engine/eng_aesni.c for details)
|
||
#
|
||
{ my $cmac=$inout1;
|
||
&function_begin("aesni_ccm64_encrypt_blocks");
|
||
&mov ($inp,&wparam(0));
|
||
&mov ($out,&wparam(1));
|
||
&mov ($len,&wparam(2));
|
||
&mov ($key,&wparam(3));
|
||
&mov ($rounds_,&wparam(4));
|
||
&mov ($rounds,&wparam(5));
|
||
&mov ($key_,"esp");
|
||
&sub ("esp",60);
|
||
&and ("esp",-16); # align stack
|
||
&mov (&DWP(48,"esp"),$key_);
|
||
|
||
&movdqu ($ivec,&QWP(0,$rounds_)); # load ivec
|
||
&movdqu ($cmac,&QWP(0,$rounds)); # load cmac
|
||
&mov ($rounds,&DWP(240,$key));
|
||
|
||
# compose byte-swap control mask for pshufb on stack
|
||
&mov (&DWP(0,"esp"),0x0c0d0e0f);
|
||
&mov (&DWP(4,"esp"),0x08090a0b);
|
||
&mov (&DWP(8,"esp"),0x04050607);
|
||
&mov (&DWP(12,"esp"),0x00010203);
|
||
|
||
# compose counter increment vector on stack
|
||
&mov ($rounds_,1);
|
||
&xor ($key_,$key_);
|
||
&mov (&DWP(16,"esp"),$rounds_);
|
||
&mov (&DWP(20,"esp"),$key_);
|
||
&mov (&DWP(24,"esp"),$key_);
|
||
&mov (&DWP(28,"esp"),$key_);
|
||
|
||
&shl ($rounds,4);
|
||
&mov ($rounds_,16);
|
||
&lea ($key_,&DWP(0,$key));
|
||
&movdqa ($inout3,&QWP(0,"esp"));
|
||
&movdqa ($inout0,$ivec);
|
||
&lea ($key,&DWP(32,$key,$rounds));
|
||
&sub ($rounds_,$rounds);
|
||
&pshufb ($ivec,$inout3);
|
||
|
||
&set_label("ccm64_enc_outer");
|
||
&$movekey ($rndkey0,&QWP(0,$key_));
|
||
&mov ($rounds,$rounds_);
|
||
&movups ($in0,&QWP(0,$inp));
|
||
|
||
&xorps ($inout0,$rndkey0);
|
||
&$movekey ($rndkey1,&QWP(16,$key_));
|
||
&xorps ($rndkey0,$in0);
|
||
&xorps ($cmac,$rndkey0); # cmac^=inp
|
||
&$movekey ($rndkey0,&QWP(32,$key_));
|
||
|
||
&set_label("ccm64_enc2_loop");
|
||
&aesenc ($inout0,$rndkey1);
|
||
&aesenc ($cmac,$rndkey1);
|
||
&$movekey ($rndkey1,&QWP(0,$key,$rounds));
|
||
&add ($rounds,32);
|
||
&aesenc ($inout0,$rndkey0);
|
||
&aesenc ($cmac,$rndkey0);
|
||
&$movekey ($rndkey0,&QWP(-16,$key,$rounds));
|
||
&jnz (&label("ccm64_enc2_loop"));
|
||
&aesenc ($inout0,$rndkey1);
|
||
&aesenc ($cmac,$rndkey1);
|
||
&paddq ($ivec,&QWP(16,"esp"));
|
||
&dec ($len);
|
||
&aesenclast ($inout0,$rndkey0);
|
||
&aesenclast ($cmac,$rndkey0);
|
||
|
||
&lea ($inp,&DWP(16,$inp));
|
||
&xorps ($in0,$inout0); # inp^=E(ivec)
|
||
&movdqa ($inout0,$ivec);
|
||
&movups (&QWP(0,$out),$in0); # save output
|
||
&pshufb ($inout0,$inout3);
|
||
&lea ($out,&DWP(16,$out));
|
||
&jnz (&label("ccm64_enc_outer"));
|
||
|
||
&mov ("esp",&DWP(48,"esp"));
|
||
&mov ($out,&wparam(5));
|
||
&movups (&QWP(0,$out),$cmac);
|
||
&function_end("aesni_ccm64_encrypt_blocks");
|
||
|
||
&function_begin("aesni_ccm64_decrypt_blocks");
|
||
&mov ($inp,&wparam(0));
|
||
&mov ($out,&wparam(1));
|
||
&mov ($len,&wparam(2));
|
||
&mov ($key,&wparam(3));
|
||
&mov ($rounds_,&wparam(4));
|
||
&mov ($rounds,&wparam(5));
|
||
&mov ($key_,"esp");
|
||
&sub ("esp",60);
|
||
&and ("esp",-16); # align stack
|
||
&mov (&DWP(48,"esp"),$key_);
|
||
|
||
&movdqu ($ivec,&QWP(0,$rounds_)); # load ivec
|
||
&movdqu ($cmac,&QWP(0,$rounds)); # load cmac
|
||
&mov ($rounds,&DWP(240,$key));
|
||
|
||
# compose byte-swap control mask for pshufb on stack
|
||
&mov (&DWP(0,"esp"),0x0c0d0e0f);
|
||
&mov (&DWP(4,"esp"),0x08090a0b);
|
||
&mov (&DWP(8,"esp"),0x04050607);
|
||
&mov (&DWP(12,"esp"),0x00010203);
|
||
|
||
# compose counter increment vector on stack
|
||
&mov ($rounds_,1);
|
||
&xor ($key_,$key_);
|
||
&mov (&DWP(16,"esp"),$rounds_);
|
||
&mov (&DWP(20,"esp"),$key_);
|
||
&mov (&DWP(24,"esp"),$key_);
|
||
&mov (&DWP(28,"esp"),$key_);
|
||
|
||
&movdqa ($inout3,&QWP(0,"esp")); # bswap mask
|
||
&movdqa ($inout0,$ivec);
|
||
|
||
&mov ($key_,$key);
|
||
&mov ($rounds_,$rounds);
|
||
|
||
&pshufb ($ivec,$inout3);
|
||
if ($inline)
|
||
{ &aesni_inline_generate1("enc"); }
|
||
else
|
||
{ &call ("_aesni_encrypt1"); }
|
||
&shl ($rounds_,4);
|
||
&mov ($rounds,16);
|
||
&movups ($in0,&QWP(0,$inp)); # load inp
|
||
&paddq ($ivec,&QWP(16,"esp"));
|
||
&lea ($inp,&QWP(16,$inp));
|
||
&sub ($rounds,$rounds_);
|
||
&lea ($key,&DWP(32,$key_,$rounds_));
|
||
&mov ($rounds_,$rounds);
|
||
&jmp (&label("ccm64_dec_outer"));
|
||
|
||
&set_label("ccm64_dec_outer",16);
|
||
&xorps ($in0,$inout0); # inp ^= E(ivec)
|
||
&movdqa ($inout0,$ivec);
|
||
&movups (&QWP(0,$out),$in0); # save output
|
||
&lea ($out,&DWP(16,$out));
|
||
&pshufb ($inout0,$inout3);
|
||
|
||
&sub ($len,1);
|
||
&jz (&label("ccm64_dec_break"));
|
||
|
||
&$movekey ($rndkey0,&QWP(0,$key_));
|
||
&mov ($rounds,$rounds_);
|
||
&$movekey ($rndkey1,&QWP(16,$key_));
|
||
&xorps ($in0,$rndkey0);
|
||
&xorps ($inout0,$rndkey0);
|
||
&xorps ($cmac,$in0); # cmac^=out
|
||
&$movekey ($rndkey0,&QWP(32,$key_));
|
||
|
||
&set_label("ccm64_dec2_loop");
|
||
&aesenc ($inout0,$rndkey1);
|
||
&aesenc ($cmac,$rndkey1);
|
||
&$movekey ($rndkey1,&QWP(0,$key,$rounds));
|
||
&add ($rounds,32);
|
||
&aesenc ($inout0,$rndkey0);
|
||
&aesenc ($cmac,$rndkey0);
|
||
&$movekey ($rndkey0,&QWP(-16,$key,$rounds));
|
||
&jnz (&label("ccm64_dec2_loop"));
|
||
&movups ($in0,&QWP(0,$inp)); # load inp
|
||
&paddq ($ivec,&QWP(16,"esp"));
|
||
&aesenc ($inout0,$rndkey1);
|
||
&aesenc ($cmac,$rndkey1);
|
||
&aesenclast ($inout0,$rndkey0);
|
||
&aesenclast ($cmac,$rndkey0);
|
||
&lea ($inp,&QWP(16,$inp));
|
||
&jmp (&label("ccm64_dec_outer"));
|
||
|
||
&set_label("ccm64_dec_break",16);
|
||
&mov ($rounds,&DWP(240,$key_));
|
||
&mov ($key,$key_);
|
||
if ($inline)
|
||
{ &aesni_inline_generate1("enc",$cmac,$in0); }
|
||
else
|
||
{ &call ("_aesni_encrypt1",$cmac); }
|
||
|
||
&mov ("esp",&DWP(48,"esp"));
|
||
&mov ($out,&wparam(5));
|
||
&movups (&QWP(0,$out),$cmac);
|
||
&function_end("aesni_ccm64_decrypt_blocks");
|
||
}
|
||
|
||
######################################################################
|
||
# void aesni_ctr32_encrypt_blocks (const void *in, void *out,
|
||
# size_t blocks, const AES_KEY *key,
|
||
# const char *ivec);
|
||
#
|
||
# Handles only complete blocks, operates on 32-bit counter and
|
||
# does not update *ivec! (see crypto/modes/ctr128.c for details)
|
||
#
|
||
# stack layout:
|
||
# 0 pshufb mask
|
||
# 16 vector addend: 0,6,6,6
|
||
# 32 counter-less ivec
|
||
# 48 1st triplet of counter vector
|
||
# 64 2nd triplet of counter vector
|
||
# 80 saved %esp
|
||
|
||
&function_begin("aesni_ctr32_encrypt_blocks");
|
||
&mov ($inp,&wparam(0));
|
||
&mov ($out,&wparam(1));
|
||
&mov ($len,&wparam(2));
|
||
&mov ($key,&wparam(3));
|
||
&mov ($rounds_,&wparam(4));
|
||
&mov ($key_,"esp");
|
||
&sub ("esp",88);
|
||
&and ("esp",-16); # align stack
|
||
&mov (&DWP(80,"esp"),$key_);
|
||
|
||
&cmp ($len,1);
|
||
&je (&label("ctr32_one_shortcut"));
|
||
|
||
&movdqu ($inout5,&QWP(0,$rounds_)); # load ivec
|
||
|
||
# compose byte-swap control mask for pshufb on stack
|
||
&mov (&DWP(0,"esp"),0x0c0d0e0f);
|
||
&mov (&DWP(4,"esp"),0x08090a0b);
|
||
&mov (&DWP(8,"esp"),0x04050607);
|
||
&mov (&DWP(12,"esp"),0x00010203);
|
||
|
||
# compose counter increment vector on stack
|
||
&mov ($rounds,6);
|
||
&xor ($key_,$key_);
|
||
&mov (&DWP(16,"esp"),$rounds);
|
||
&mov (&DWP(20,"esp"),$rounds);
|
||
&mov (&DWP(24,"esp"),$rounds);
|
||
&mov (&DWP(28,"esp"),$key_);
|
||
|
||
&pextrd ($rounds_,$inout5,3); # pull 32-bit counter
|
||
&pinsrd ($inout5,$key_,3); # wipe 32-bit counter
|
||
|
||
&mov ($rounds,&DWP(240,$key)); # key->rounds
|
||
|
||
# compose 2 vectors of 3x32-bit counters
|
||
&bswap ($rounds_);
|
||
&pxor ($rndkey0,$rndkey0);
|
||
&pxor ($rndkey1,$rndkey1);
|
||
&movdqa ($inout0,&QWP(0,"esp")); # load byte-swap mask
|
||
&pinsrd ($rndkey0,$rounds_,0);
|
||
&lea ($key_,&DWP(3,$rounds_));
|
||
&pinsrd ($rndkey1,$key_,0);
|
||
&inc ($rounds_);
|
||
&pinsrd ($rndkey0,$rounds_,1);
|
||
&inc ($key_);
|
||
&pinsrd ($rndkey1,$key_,1);
|
||
&inc ($rounds_);
|
||
&pinsrd ($rndkey0,$rounds_,2);
|
||
&inc ($key_);
|
||
&pinsrd ($rndkey1,$key_,2);
|
||
&movdqa (&QWP(48,"esp"),$rndkey0); # save 1st triplet
|
||
&pshufb ($rndkey0,$inout0); # byte swap
|
||
&movdqu ($inout4,&QWP(0,$key)); # key[0]
|
||
&movdqa (&QWP(64,"esp"),$rndkey1); # save 2nd triplet
|
||
&pshufb ($rndkey1,$inout0); # byte swap
|
||
|
||
&pshufd ($inout0,$rndkey0,3<<6); # place counter to upper dword
|
||
&pshufd ($inout1,$rndkey0,2<<6);
|
||
&cmp ($len,6);
|
||
&jb (&label("ctr32_tail"));
|
||
&pxor ($inout5,$inout4); # counter-less ivec^key[0]
|
||
&shl ($rounds,4);
|
||
&mov ($rounds_,16);
|
||
&movdqa (&QWP(32,"esp"),$inout5); # save counter-less ivec^key[0]
|
||
&mov ($key_,$key); # backup $key
|
||
&sub ($rounds_,$rounds); # backup twisted $rounds
|
||
&lea ($key,&DWP(32,$key,$rounds));
|
||
&sub ($len,6);
|
||
&jmp (&label("ctr32_loop6"));
|
||
|
||
&set_label("ctr32_loop6",16);
|
||
# inlining _aesni_encrypt6's prologue gives ~6% improvement...
|
||
&pshufd ($inout2,$rndkey0,1<<6);
|
||
&movdqa ($rndkey0,&QWP(32,"esp")); # pull counter-less ivec
|
||
&pshufd ($inout3,$rndkey1,3<<6);
|
||
&pxor ($inout0,$rndkey0); # merge counter-less ivec
|
||
&pshufd ($inout4,$rndkey1,2<<6);
|
||
&pxor ($inout1,$rndkey0);
|
||
&pshufd ($inout5,$rndkey1,1<<6);
|
||
&$movekey ($rndkey1,&QWP(16,$key_));
|
||
&pxor ($inout2,$rndkey0);
|
||
&pxor ($inout3,$rndkey0);
|
||
&aesenc ($inout0,$rndkey1);
|
||
&pxor ($inout4,$rndkey0);
|
||
&pxor ($inout5,$rndkey0);
|
||
&aesenc ($inout1,$rndkey1);
|
||
&$movekey ($rndkey0,&QWP(32,$key_));
|
||
&mov ($rounds,$rounds_);
|
||
&aesenc ($inout2,$rndkey1);
|
||
&aesenc ($inout3,$rndkey1);
|
||
&aesenc ($inout4,$rndkey1);
|
||
&aesenc ($inout5,$rndkey1);
|
||
|
||
&call (&label("_aesni_encrypt6_enter"));
|
||
|
||
&movups ($rndkey1,&QWP(0,$inp));
|
||
&movups ($rndkey0,&QWP(0x10,$inp));
|
||
&xorps ($inout0,$rndkey1);
|
||
&movups ($rndkey1,&QWP(0x20,$inp));
|
||
&xorps ($inout1,$rndkey0);
|
||
&movups (&QWP(0,$out),$inout0);
|
||
&movdqa ($rndkey0,&QWP(16,"esp")); # load increment
|
||
&xorps ($inout2,$rndkey1);
|
||
&movdqa ($rndkey1,&QWP(64,"esp")); # load 2nd triplet
|
||
&movups (&QWP(0x10,$out),$inout1);
|
||
&movups (&QWP(0x20,$out),$inout2);
|
||
|
||
&paddd ($rndkey1,$rndkey0); # 2nd triplet increment
|
||
&paddd ($rndkey0,&QWP(48,"esp")); # 1st triplet increment
|
||
&movdqa ($inout0,&QWP(0,"esp")); # load byte swap mask
|
||
|
||
&movups ($inout1,&QWP(0x30,$inp));
|
||
&movups ($inout2,&QWP(0x40,$inp));
|
||
&xorps ($inout3,$inout1);
|
||
&movups ($inout1,&QWP(0x50,$inp));
|
||
&lea ($inp,&DWP(0x60,$inp));
|
||
&movdqa (&QWP(48,"esp"),$rndkey0); # save 1st triplet
|
||
&pshufb ($rndkey0,$inout0); # byte swap
|
||
&xorps ($inout4,$inout2);
|
||
&movups (&QWP(0x30,$out),$inout3);
|
||
&xorps ($inout5,$inout1);
|
||
&movdqa (&QWP(64,"esp"),$rndkey1); # save 2nd triplet
|
||
&pshufb ($rndkey1,$inout0); # byte swap
|
||
&movups (&QWP(0x40,$out),$inout4);
|
||
&pshufd ($inout0,$rndkey0,3<<6);
|
||
&movups (&QWP(0x50,$out),$inout5);
|
||
&lea ($out,&DWP(0x60,$out));
|
||
|
||
&pshufd ($inout1,$rndkey0,2<<6);
|
||
&sub ($len,6);
|
||
&jnc (&label("ctr32_loop6"));
|
||
|
||
&add ($len,6);
|
||
&jz (&label("ctr32_ret"));
|
||
&movdqu ($inout5,&QWP(0,$key_));
|
||
&mov ($key,$key_);
|
||
&pxor ($inout5,&QWP(32,"esp")); # restore count-less ivec
|
||
&mov ($rounds,&DWP(240,$key_)); # restore $rounds
|
||
|
||
&set_label("ctr32_tail");
|
||
&por ($inout0,$inout5);
|
||
&cmp ($len,2);
|
||
&jb (&label("ctr32_one"));
|
||
|
||
&pshufd ($inout2,$rndkey0,1<<6);
|
||
&por ($inout1,$inout5);
|
||
&je (&label("ctr32_two"));
|
||
|
||
&pshufd ($inout3,$rndkey1,3<<6);
|
||
&por ($inout2,$inout5);
|
||
&cmp ($len,4);
|
||
&jb (&label("ctr32_three"));
|
||
|
||
&pshufd ($inout4,$rndkey1,2<<6);
|
||
&por ($inout3,$inout5);
|
||
&je (&label("ctr32_four"));
|
||
|
||
&por ($inout4,$inout5);
|
||
&call ("_aesni_encrypt6");
|
||
&movups ($rndkey1,&QWP(0,$inp));
|
||
&movups ($rndkey0,&QWP(0x10,$inp));
|
||
&xorps ($inout0,$rndkey1);
|
||
&movups ($rndkey1,&QWP(0x20,$inp));
|
||
&xorps ($inout1,$rndkey0);
|
||
&movups ($rndkey0,&QWP(0x30,$inp));
|
||
&xorps ($inout2,$rndkey1);
|
||
&movups ($rndkey1,&QWP(0x40,$inp));
|
||
&xorps ($inout3,$rndkey0);
|
||
&movups (&QWP(0,$out),$inout0);
|
||
&xorps ($inout4,$rndkey1);
|
||
&movups (&QWP(0x10,$out),$inout1);
|
||
&movups (&QWP(0x20,$out),$inout2);
|
||
&movups (&QWP(0x30,$out),$inout3);
|
||
&movups (&QWP(0x40,$out),$inout4);
|
||
&jmp (&label("ctr32_ret"));
|
||
|
||
&set_label("ctr32_one_shortcut",16);
|
||
&movups ($inout0,&QWP(0,$rounds_)); # load ivec
|
||
&mov ($rounds,&DWP(240,$key));
|
||
|
||
&set_label("ctr32_one");
|
||
if ($inline)
|
||
{ &aesni_inline_generate1("enc"); }
|
||
else
|
||
{ &call ("_aesni_encrypt1"); }
|
||
&movups ($in0,&QWP(0,$inp));
|
||
&xorps ($in0,$inout0);
|
||
&movups (&QWP(0,$out),$in0);
|
||
&jmp (&label("ctr32_ret"));
|
||
|
||
&set_label("ctr32_two",16);
|
||
&call ("_aesni_encrypt3");
|
||
&movups ($inout3,&QWP(0,$inp));
|
||
&movups ($inout4,&QWP(0x10,$inp));
|
||
&xorps ($inout0,$inout3);
|
||
&xorps ($inout1,$inout4);
|
||
&movups (&QWP(0,$out),$inout0);
|
||
&movups (&QWP(0x10,$out),$inout1);
|
||
&jmp (&label("ctr32_ret"));
|
||
|
||
&set_label("ctr32_three",16);
|
||
&call ("_aesni_encrypt3");
|
||
&movups ($inout3,&QWP(0,$inp));
|
||
&movups ($inout4,&QWP(0x10,$inp));
|
||
&xorps ($inout0,$inout3);
|
||
&movups ($inout5,&QWP(0x20,$inp));
|
||
&xorps ($inout1,$inout4);
|
||
&movups (&QWP(0,$out),$inout0);
|
||
&xorps ($inout2,$inout5);
|
||
&movups (&QWP(0x10,$out),$inout1);
|
||
&movups (&QWP(0x20,$out),$inout2);
|
||
&jmp (&label("ctr32_ret"));
|
||
|
||
&set_label("ctr32_four",16);
|
||
&call ("_aesni_encrypt4");
|
||
&movups ($inout4,&QWP(0,$inp));
|
||
&movups ($inout5,&QWP(0x10,$inp));
|
||
&movups ($rndkey1,&QWP(0x20,$inp));
|
||
&xorps ($inout0,$inout4);
|
||
&movups ($rndkey0,&QWP(0x30,$inp));
|
||
&xorps ($inout1,$inout5);
|
||
&movups (&QWP(0,$out),$inout0);
|
||
&xorps ($inout2,$rndkey1);
|
||
&movups (&QWP(0x10,$out),$inout1);
|
||
&xorps ($inout3,$rndkey0);
|
||
&movups (&QWP(0x20,$out),$inout2);
|
||
&movups (&QWP(0x30,$out),$inout3);
|
||
|
||
&set_label("ctr32_ret");
|
||
&mov ("esp",&DWP(80,"esp"));
|
||
&function_end("aesni_ctr32_encrypt_blocks");
|
||
|
||
######################################################################
|
||
# void aesni_xts_[en|de]crypt(const char *inp,char *out,size_t len,
|
||
# const AES_KEY *key1, const AES_KEY *key2
|
||
# const unsigned char iv[16]);
|
||
#
|
||
{ my ($tweak,$twtmp,$twres,$twmask)=($rndkey1,$rndkey0,$inout0,$inout1);
|
||
|
||
&function_begin("aesni_xts_encrypt");
|
||
&mov ($key,&wparam(4)); # key2
|
||
&mov ($inp,&wparam(5)); # clear-text tweak
|
||
|
||
&mov ($rounds,&DWP(240,$key)); # key2->rounds
|
||
&movups ($inout0,&QWP(0,$inp));
|
||
if ($inline)
|
||
{ &aesni_inline_generate1("enc"); }
|
||
else
|
||
{ &call ("_aesni_encrypt1"); }
|
||
|
||
&mov ($inp,&wparam(0));
|
||
&mov ($out,&wparam(1));
|
||
&mov ($len,&wparam(2));
|
||
&mov ($key,&wparam(3)); # key1
|
||
|
||
&mov ($key_,"esp");
|
||
&sub ("esp",16*7+8);
|
||
&mov ($rounds,&DWP(240,$key)); # key1->rounds
|
||
&and ("esp",-16); # align stack
|
||
|
||
&mov (&DWP(16*6+0,"esp"),0x87); # compose the magic constant
|
||
&mov (&DWP(16*6+4,"esp"),0);
|
||
&mov (&DWP(16*6+8,"esp"),1);
|
||
&mov (&DWP(16*6+12,"esp"),0);
|
||
&mov (&DWP(16*7+0,"esp"),$len); # save original $len
|
||
&mov (&DWP(16*7+4,"esp"),$key_); # save original %esp
|
||
|
||
&movdqa ($tweak,$inout0);
|
||
&pxor ($twtmp,$twtmp);
|
||
&movdqa ($twmask,&QWP(6*16,"esp")); # 0x0...010...87
|
||
&pcmpgtd($twtmp,$tweak); # broadcast upper bits
|
||
|
||
&and ($len,-16);
|
||
&mov ($key_,$key); # backup $key
|
||
&mov ($rounds_,$rounds); # backup $rounds
|
||
&sub ($len,16*6);
|
||
&jc (&label("xts_enc_short"));
|
||
|
||
&shl ($rounds,4);
|
||
&mov ($rounds_,16);
|
||
&sub ($rounds_,$rounds);
|
||
&lea ($key,&DWP(32,$key,$rounds));
|
||
&jmp (&label("xts_enc_loop6"));
|
||
|
||
&set_label("xts_enc_loop6",16);
|
||
for ($i=0;$i<4;$i++) {
|
||
&pshufd ($twres,$twtmp,0x13);
|
||
&pxor ($twtmp,$twtmp);
|
||
&movdqa (&QWP(16*$i,"esp"),$tweak);
|
||
&paddq ($tweak,$tweak); # &psllq($tweak,1);
|
||
&pand ($twres,$twmask); # isolate carry and residue
|
||
&pcmpgtd ($twtmp,$tweak); # broadcast upper bits
|
||
&pxor ($tweak,$twres);
|
||
}
|
||
&pshufd ($inout5,$twtmp,0x13);
|
||
&movdqa (&QWP(16*$i++,"esp"),$tweak);
|
||
&paddq ($tweak,$tweak); # &psllq($tweak,1);
|
||
&$movekey ($rndkey0,&QWP(0,$key_));
|
||
&pand ($inout5,$twmask); # isolate carry and residue
|
||
&movups ($inout0,&QWP(0,$inp)); # load input
|
||
&pxor ($inout5,$tweak);
|
||
|
||
# inline _aesni_encrypt6 prologue and flip xor with tweak and key[0]
|
||
&mov ($rounds,$rounds_); # restore $rounds
|
||
&movdqu ($inout1,&QWP(16*1,$inp));
|
||
&xorps ($inout0,$rndkey0); # input^=rndkey[0]
|
||
&movdqu ($inout2,&QWP(16*2,$inp));
|
||
&pxor ($inout1,$rndkey0);
|
||
&movdqu ($inout3,&QWP(16*3,$inp));
|
||
&pxor ($inout2,$rndkey0);
|
||
&movdqu ($inout4,&QWP(16*4,$inp));
|
||
&pxor ($inout3,$rndkey0);
|
||
&movdqu ($rndkey1,&QWP(16*5,$inp));
|
||
&pxor ($inout4,$rndkey0);
|
||
&lea ($inp,&DWP(16*6,$inp));
|
||
&pxor ($inout0,&QWP(16*0,"esp")); # input^=tweak
|
||
&movdqa (&QWP(16*$i,"esp"),$inout5); # save last tweak
|
||
&pxor ($inout5,$rndkey1);
|
||
|
||
&$movekey ($rndkey1,&QWP(16,$key_));
|
||
&pxor ($inout1,&QWP(16*1,"esp"));
|
||
&pxor ($inout2,&QWP(16*2,"esp"));
|
||
&aesenc ($inout0,$rndkey1);
|
||
&pxor ($inout3,&QWP(16*3,"esp"));
|
||
&pxor ($inout4,&QWP(16*4,"esp"));
|
||
&aesenc ($inout1,$rndkey1);
|
||
&pxor ($inout5,$rndkey0);
|
||
&$movekey ($rndkey0,&QWP(32,$key_));
|
||
&aesenc ($inout2,$rndkey1);
|
||
&aesenc ($inout3,$rndkey1);
|
||
&aesenc ($inout4,$rndkey1);
|
||
&aesenc ($inout5,$rndkey1);
|
||
&call (&label("_aesni_encrypt6_enter"));
|
||
|
||
&movdqa ($tweak,&QWP(16*5,"esp")); # last tweak
|
||
&pxor ($twtmp,$twtmp);
|
||
&xorps ($inout0,&QWP(16*0,"esp")); # output^=tweak
|
||
&pcmpgtd ($twtmp,$tweak); # broadcast upper bits
|
||
&xorps ($inout1,&QWP(16*1,"esp"));
|
||
&movups (&QWP(16*0,$out),$inout0); # write output
|
||
&xorps ($inout2,&QWP(16*2,"esp"));
|
||
&movups (&QWP(16*1,$out),$inout1);
|
||
&xorps ($inout3,&QWP(16*3,"esp"));
|
||
&movups (&QWP(16*2,$out),$inout2);
|
||
&xorps ($inout4,&QWP(16*4,"esp"));
|
||
&movups (&QWP(16*3,$out),$inout3);
|
||
&xorps ($inout5,$tweak);
|
||
&movups (&QWP(16*4,$out),$inout4);
|
||
&pshufd ($twres,$twtmp,0x13);
|
||
&movups (&QWP(16*5,$out),$inout5);
|
||
&lea ($out,&DWP(16*6,$out));
|
||
&movdqa ($twmask,&QWP(16*6,"esp")); # 0x0...010...87
|
||
|
||
&pxor ($twtmp,$twtmp);
|
||
&paddq ($tweak,$tweak); # &psllq($tweak,1);
|
||
&pand ($twres,$twmask); # isolate carry and residue
|
||
&pcmpgtd($twtmp,$tweak); # broadcast upper bits
|
||
&pxor ($tweak,$twres);
|
||
|
||
&sub ($len,16*6);
|
||
&jnc (&label("xts_enc_loop6"));
|
||
|
||
&mov ($rounds,&DWP(240,$key_)); # restore $rounds
|
||
&mov ($key,$key_); # restore $key
|
||
&mov ($rounds_,$rounds);
|
||
|
||
&set_label("xts_enc_short");
|
||
&add ($len,16*6);
|
||
&jz (&label("xts_enc_done6x"));
|
||
|
||
&movdqa ($inout3,$tweak); # put aside previous tweak
|
||
&cmp ($len,0x20);
|
||
&jb (&label("xts_enc_one"));
|
||
|
||
&pshufd ($twres,$twtmp,0x13);
|
||
&pxor ($twtmp,$twtmp);
|
||
&paddq ($tweak,$tweak); # &psllq($tweak,1);
|
||
&pand ($twres,$twmask); # isolate carry and residue
|
||
&pcmpgtd($twtmp,$tweak); # broadcast upper bits
|
||
&pxor ($tweak,$twres);
|
||
&je (&label("xts_enc_two"));
|
||
|
||
&pshufd ($twres,$twtmp,0x13);
|
||
&pxor ($twtmp,$twtmp);
|
||
&movdqa ($inout4,$tweak); # put aside previous tweak
|
||
&paddq ($tweak,$tweak); # &psllq($tweak,1);
|
||
&pand ($twres,$twmask); # isolate carry and residue
|
||
&pcmpgtd($twtmp,$tweak); # broadcast upper bits
|
||
&pxor ($tweak,$twres);
|
||
&cmp ($len,0x40);
|
||
&jb (&label("xts_enc_three"));
|
||
|
||
&pshufd ($twres,$twtmp,0x13);
|
||
&pxor ($twtmp,$twtmp);
|
||
&movdqa ($inout5,$tweak); # put aside previous tweak
|
||
&paddq ($tweak,$tweak); # &psllq($tweak,1);
|
||
&pand ($twres,$twmask); # isolate carry and residue
|
||
&pcmpgtd($twtmp,$tweak); # broadcast upper bits
|
||
&pxor ($tweak,$twres);
|
||
&movdqa (&QWP(16*0,"esp"),$inout3);
|
||
&movdqa (&QWP(16*1,"esp"),$inout4);
|
||
&je (&label("xts_enc_four"));
|
||
|
||
&movdqa (&QWP(16*2,"esp"),$inout5);
|
||
&pshufd ($inout5,$twtmp,0x13);
|
||
&movdqa (&QWP(16*3,"esp"),$tweak);
|
||
&paddq ($tweak,$tweak); # &psllq($inout0,1);
|
||
&pand ($inout5,$twmask); # isolate carry and residue
|
||
&pxor ($inout5,$tweak);
|
||
|
||
&movdqu ($inout0,&QWP(16*0,$inp)); # load input
|
||
&movdqu ($inout1,&QWP(16*1,$inp));
|
||
&movdqu ($inout2,&QWP(16*2,$inp));
|
||
&pxor ($inout0,&QWP(16*0,"esp")); # input^=tweak
|
||
&movdqu ($inout3,&QWP(16*3,$inp));
|
||
&pxor ($inout1,&QWP(16*1,"esp"));
|
||
&movdqu ($inout4,&QWP(16*4,$inp));
|
||
&pxor ($inout2,&QWP(16*2,"esp"));
|
||
&lea ($inp,&DWP(16*5,$inp));
|
||
&pxor ($inout3,&QWP(16*3,"esp"));
|
||
&movdqa (&QWP(16*4,"esp"),$inout5); # save last tweak
|
||
&pxor ($inout4,$inout5);
|
||
|
||
&call ("_aesni_encrypt6");
|
||
|
||
&movaps ($tweak,&QWP(16*4,"esp")); # last tweak
|
||
&xorps ($inout0,&QWP(16*0,"esp")); # output^=tweak
|
||
&xorps ($inout1,&QWP(16*1,"esp"));
|
||
&xorps ($inout2,&QWP(16*2,"esp"));
|
||
&movups (&QWP(16*0,$out),$inout0); # write output
|
||
&xorps ($inout3,&QWP(16*3,"esp"));
|
||
&movups (&QWP(16*1,$out),$inout1);
|
||
&xorps ($inout4,$tweak);
|
||
&movups (&QWP(16*2,$out),$inout2);
|
||
&movups (&QWP(16*3,$out),$inout3);
|
||
&movups (&QWP(16*4,$out),$inout4);
|
||
&lea ($out,&DWP(16*5,$out));
|
||
&jmp (&label("xts_enc_done"));
|
||
|
||
&set_label("xts_enc_one",16);
|
||
&movups ($inout0,&QWP(16*0,$inp)); # load input
|
||
&lea ($inp,&DWP(16*1,$inp));
|
||
&xorps ($inout0,$inout3); # input^=tweak
|
||
if ($inline)
|
||
{ &aesni_inline_generate1("enc"); }
|
||
else
|
||
{ &call ("_aesni_encrypt1"); }
|
||
&xorps ($inout0,$inout3); # output^=tweak
|
||
&movups (&QWP(16*0,$out),$inout0); # write output
|
||
&lea ($out,&DWP(16*1,$out));
|
||
|
||
&movdqa ($tweak,$inout3); # last tweak
|
||
&jmp (&label("xts_enc_done"));
|
||
|
||
&set_label("xts_enc_two",16);
|
||
&movaps ($inout4,$tweak); # put aside last tweak
|
||
|
||
&movups ($inout0,&QWP(16*0,$inp)); # load input
|
||
&movups ($inout1,&QWP(16*1,$inp));
|
||
&lea ($inp,&DWP(16*2,$inp));
|
||
&xorps ($inout0,$inout3); # input^=tweak
|
||
&xorps ($inout1,$inout4);
|
||
&xorps ($inout2,$inout2);
|
||
|
||
&call ("_aesni_encrypt3");
|
||
|
||
&xorps ($inout0,$inout3); # output^=tweak
|
||
&xorps ($inout1,$inout4);
|
||
&movups (&QWP(16*0,$out),$inout0); # write output
|
||
&movups (&QWP(16*1,$out),$inout1);
|
||
&lea ($out,&DWP(16*2,$out));
|
||
|
||
&movdqa ($tweak,$inout4); # last tweak
|
||
&jmp (&label("xts_enc_done"));
|
||
|
||
&set_label("xts_enc_three",16);
|
||
&movaps ($inout5,$tweak); # put aside last tweak
|
||
&movups ($inout0,&QWP(16*0,$inp)); # load input
|
||
&movups ($inout1,&QWP(16*1,$inp));
|
||
&movups ($inout2,&QWP(16*2,$inp));
|
||
&lea ($inp,&DWP(16*3,$inp));
|
||
&xorps ($inout0,$inout3); # input^=tweak
|
||
&xorps ($inout1,$inout4);
|
||
&xorps ($inout2,$inout5);
|
||
|
||
&call ("_aesni_encrypt3");
|
||
|
||
&xorps ($inout0,$inout3); # output^=tweak
|
||
&xorps ($inout1,$inout4);
|
||
&xorps ($inout2,$inout5);
|
||
&movups (&QWP(16*0,$out),$inout0); # write output
|
||
&movups (&QWP(16*1,$out),$inout1);
|
||
&movups (&QWP(16*2,$out),$inout2);
|
||
&lea ($out,&DWP(16*3,$out));
|
||
|
||
&movdqa ($tweak,$inout5); # last tweak
|
||
&jmp (&label("xts_enc_done"));
|
||
|
||
&set_label("xts_enc_four",16);
|
||
&movaps ($inout4,$tweak); # put aside last tweak
|
||
|
||
&movups ($inout0,&QWP(16*0,$inp)); # load input
|
||
&movups ($inout1,&QWP(16*1,$inp));
|
||
&movups ($inout2,&QWP(16*2,$inp));
|
||
&xorps ($inout0,&QWP(16*0,"esp")); # input^=tweak
|
||
&movups ($inout3,&QWP(16*3,$inp));
|
||
&lea ($inp,&DWP(16*4,$inp));
|
||
&xorps ($inout1,&QWP(16*1,"esp"));
|
||
&xorps ($inout2,$inout5);
|
||
&xorps ($inout3,$inout4);
|
||
|
||
&call ("_aesni_encrypt4");
|
||
|
||
&xorps ($inout0,&QWP(16*0,"esp")); # output^=tweak
|
||
&xorps ($inout1,&QWP(16*1,"esp"));
|
||
&xorps ($inout2,$inout5);
|
||
&movups (&QWP(16*0,$out),$inout0); # write output
|
||
&xorps ($inout3,$inout4);
|
||
&movups (&QWP(16*1,$out),$inout1);
|
||
&movups (&QWP(16*2,$out),$inout2);
|
||
&movups (&QWP(16*3,$out),$inout3);
|
||
&lea ($out,&DWP(16*4,$out));
|
||
|
||
&movdqa ($tweak,$inout4); # last tweak
|
||
&jmp (&label("xts_enc_done"));
|
||
|
||
&set_label("xts_enc_done6x",16); # $tweak is pre-calculated
|
||
&mov ($len,&DWP(16*7+0,"esp")); # restore original $len
|
||
&and ($len,15);
|
||
&jz (&label("xts_enc_ret"));
|
||
&movdqa ($inout3,$tweak);
|
||
&mov (&DWP(16*7+0,"esp"),$len); # save $len%16
|
||
&jmp (&label("xts_enc_steal"));
|
||
|
||
&set_label("xts_enc_done",16);
|
||
&mov ($len,&DWP(16*7+0,"esp")); # restore original $len
|
||
&pxor ($twtmp,$twtmp);
|
||
&and ($len,15);
|
||
&jz (&label("xts_enc_ret"));
|
||
|
||
&pcmpgtd($twtmp,$tweak); # broadcast upper bits
|
||
&mov (&DWP(16*7+0,"esp"),$len); # save $len%16
|
||
&pshufd ($inout3,$twtmp,0x13);
|
||
&paddq ($tweak,$tweak); # &psllq($tweak,1);
|
||
&pand ($inout3,&QWP(16*6,"esp")); # isolate carry and residue
|
||
&pxor ($inout3,$tweak);
|
||
|
||
&set_label("xts_enc_steal");
|
||
&movz ($rounds,&BP(0,$inp));
|
||
&movz ($key,&BP(-16,$out));
|
||
&lea ($inp,&DWP(1,$inp));
|
||
&mov (&BP(-16,$out),&LB($rounds));
|
||
&mov (&BP(0,$out),&LB($key));
|
||
&lea ($out,&DWP(1,$out));
|
||
&sub ($len,1);
|
||
&jnz (&label("xts_enc_steal"));
|
||
|
||
&sub ($out,&DWP(16*7+0,"esp")); # rewind $out
|
||
&mov ($key,$key_); # restore $key
|
||
&mov ($rounds,$rounds_); # restore $rounds
|
||
|
||
&movups ($inout0,&QWP(-16,$out)); # load input
|
||
&xorps ($inout0,$inout3); # input^=tweak
|
||
if ($inline)
|
||
{ &aesni_inline_generate1("enc"); }
|
||
else
|
||
{ &call ("_aesni_encrypt1"); }
|
||
&xorps ($inout0,$inout3); # output^=tweak
|
||
&movups (&QWP(-16,$out),$inout0); # write output
|
||
|
||
&set_label("xts_enc_ret");
|
||
&mov ("esp",&DWP(16*7+4,"esp")); # restore %esp
|
||
&function_end("aesni_xts_encrypt");
|
||
|
||
&function_begin("aesni_xts_decrypt");
|
||
&mov ($key,&wparam(4)); # key2
|
||
&mov ($inp,&wparam(5)); # clear-text tweak
|
||
|
||
&mov ($rounds,&DWP(240,$key)); # key2->rounds
|
||
&movups ($inout0,&QWP(0,$inp));
|
||
if ($inline)
|
||
{ &aesni_inline_generate1("enc"); }
|
||
else
|
||
{ &call ("_aesni_encrypt1"); }
|
||
|
||
&mov ($inp,&wparam(0));
|
||
&mov ($out,&wparam(1));
|
||
&mov ($len,&wparam(2));
|
||
&mov ($key,&wparam(3)); # key1
|
||
|
||
&mov ($key_,"esp");
|
||
&sub ("esp",16*7+8);
|
||
&and ("esp",-16); # align stack
|
||
|
||
&xor ($rounds_,$rounds_); # if(len%16) len-=16;
|
||
&test ($len,15);
|
||
&setnz (&LB($rounds_));
|
||
&shl ($rounds_,4);
|
||
&sub ($len,$rounds_);
|
||
|
||
&mov (&DWP(16*6+0,"esp"),0x87); # compose the magic constant
|
||
&mov (&DWP(16*6+4,"esp"),0);
|
||
&mov (&DWP(16*6+8,"esp"),1);
|
||
&mov (&DWP(16*6+12,"esp"),0);
|
||
&mov (&DWP(16*7+0,"esp"),$len); # save original $len
|
||
&mov (&DWP(16*7+4,"esp"),$key_); # save original %esp
|
||
|
||
&mov ($rounds,&DWP(240,$key)); # key1->rounds
|
||
&mov ($key_,$key); # backup $key
|
||
&mov ($rounds_,$rounds); # backup $rounds
|
||
|
||
&movdqa ($tweak,$inout0);
|
||
&pxor ($twtmp,$twtmp);
|
||
&movdqa ($twmask,&QWP(6*16,"esp")); # 0x0...010...87
|
||
&pcmpgtd($twtmp,$tweak); # broadcast upper bits
|
||
|
||
&and ($len,-16);
|
||
&sub ($len,16*6);
|
||
&jc (&label("xts_dec_short"));
|
||
|
||
&shl ($rounds,4);
|
||
&mov ($rounds_,16);
|
||
&sub ($rounds_,$rounds);
|
||
&lea ($key,&DWP(32,$key,$rounds));
|
||
&jmp (&label("xts_dec_loop6"));
|
||
|
||
&set_label("xts_dec_loop6",16);
|
||
for ($i=0;$i<4;$i++) {
|
||
&pshufd ($twres,$twtmp,0x13);
|
||
&pxor ($twtmp,$twtmp);
|
||
&movdqa (&QWP(16*$i,"esp"),$tweak);
|
||
&paddq ($tweak,$tweak); # &psllq($tweak,1);
|
||
&pand ($twres,$twmask); # isolate carry and residue
|
||
&pcmpgtd ($twtmp,$tweak); # broadcast upper bits
|
||
&pxor ($tweak,$twres);
|
||
}
|
||
&pshufd ($inout5,$twtmp,0x13);
|
||
&movdqa (&QWP(16*$i++,"esp"),$tweak);
|
||
&paddq ($tweak,$tweak); # &psllq($tweak,1);
|
||
&$movekey ($rndkey0,&QWP(0,$key_));
|
||
&pand ($inout5,$twmask); # isolate carry and residue
|
||
&movups ($inout0,&QWP(0,$inp)); # load input
|
||
&pxor ($inout5,$tweak);
|
||
|
||
# inline _aesni_encrypt6 prologue and flip xor with tweak and key[0]
|
||
&mov ($rounds,$rounds_);
|
||
&movdqu ($inout1,&QWP(16*1,$inp));
|
||
&xorps ($inout0,$rndkey0); # input^=rndkey[0]
|
||
&movdqu ($inout2,&QWP(16*2,$inp));
|
||
&pxor ($inout1,$rndkey0);
|
||
&movdqu ($inout3,&QWP(16*3,$inp));
|
||
&pxor ($inout2,$rndkey0);
|
||
&movdqu ($inout4,&QWP(16*4,$inp));
|
||
&pxor ($inout3,$rndkey0);
|
||
&movdqu ($rndkey1,&QWP(16*5,$inp));
|
||
&pxor ($inout4,$rndkey0);
|
||
&lea ($inp,&DWP(16*6,$inp));
|
||
&pxor ($inout0,&QWP(16*0,"esp")); # input^=tweak
|
||
&movdqa (&QWP(16*$i,"esp"),$inout5); # save last tweak
|
||
&pxor ($inout5,$rndkey1);
|
||
|
||
&$movekey ($rndkey1,&QWP(16,$key_));
|
||
&pxor ($inout1,&QWP(16*1,"esp"));
|
||
&pxor ($inout2,&QWP(16*2,"esp"));
|
||
&aesdec ($inout0,$rndkey1);
|
||
&pxor ($inout3,&QWP(16*3,"esp"));
|
||
&pxor ($inout4,&QWP(16*4,"esp"));
|
||
&aesdec ($inout1,$rndkey1);
|
||
&pxor ($inout5,$rndkey0);
|
||
&$movekey ($rndkey0,&QWP(32,$key_));
|
||
&aesdec ($inout2,$rndkey1);
|
||
&aesdec ($inout3,$rndkey1);
|
||
&aesdec ($inout4,$rndkey1);
|
||
&aesdec ($inout5,$rndkey1);
|
||
&call (&label("_aesni_decrypt6_enter"));
|
||
|
||
&movdqa ($tweak,&QWP(16*5,"esp")); # last tweak
|
||
&pxor ($twtmp,$twtmp);
|
||
&xorps ($inout0,&QWP(16*0,"esp")); # output^=tweak
|
||
&pcmpgtd ($twtmp,$tweak); # broadcast upper bits
|
||
&xorps ($inout1,&QWP(16*1,"esp"));
|
||
&movups (&QWP(16*0,$out),$inout0); # write output
|
||
&xorps ($inout2,&QWP(16*2,"esp"));
|
||
&movups (&QWP(16*1,$out),$inout1);
|
||
&xorps ($inout3,&QWP(16*3,"esp"));
|
||
&movups (&QWP(16*2,$out),$inout2);
|
||
&xorps ($inout4,&QWP(16*4,"esp"));
|
||
&movups (&QWP(16*3,$out),$inout3);
|
||
&xorps ($inout5,$tweak);
|
||
&movups (&QWP(16*4,$out),$inout4);
|
||
&pshufd ($twres,$twtmp,0x13);
|
||
&movups (&QWP(16*5,$out),$inout5);
|
||
&lea ($out,&DWP(16*6,$out));
|
||
&movdqa ($twmask,&QWP(16*6,"esp")); # 0x0...010...87
|
||
|
||
&pxor ($twtmp,$twtmp);
|
||
&paddq ($tweak,$tweak); # &psllq($tweak,1);
|
||
&pand ($twres,$twmask); # isolate carry and residue
|
||
&pcmpgtd($twtmp,$tweak); # broadcast upper bits
|
||
&pxor ($tweak,$twres);
|
||
|
||
&sub ($len,16*6);
|
||
&jnc (&label("xts_dec_loop6"));
|
||
|
||
&mov ($rounds,&DWP(240,$key_)); # restore $rounds
|
||
&mov ($key,$key_); # restore $key
|
||
&mov ($rounds_,$rounds);
|
||
|
||
&set_label("xts_dec_short");
|
||
&add ($len,16*6);
|
||
&jz (&label("xts_dec_done6x"));
|
||
|
||
&movdqa ($inout3,$tweak); # put aside previous tweak
|
||
&cmp ($len,0x20);
|
||
&jb (&label("xts_dec_one"));
|
||
|
||
&pshufd ($twres,$twtmp,0x13);
|
||
&pxor ($twtmp,$twtmp);
|
||
&paddq ($tweak,$tweak); # &psllq($tweak,1);
|
||
&pand ($twres,$twmask); # isolate carry and residue
|
||
&pcmpgtd($twtmp,$tweak); # broadcast upper bits
|
||
&pxor ($tweak,$twres);
|
||
&je (&label("xts_dec_two"));
|
||
|
||
&pshufd ($twres,$twtmp,0x13);
|
||
&pxor ($twtmp,$twtmp);
|
||
&movdqa ($inout4,$tweak); # put aside previous tweak
|
||
&paddq ($tweak,$tweak); # &psllq($tweak,1);
|
||
&pand ($twres,$twmask); # isolate carry and residue
|
||
&pcmpgtd($twtmp,$tweak); # broadcast upper bits
|
||
&pxor ($tweak,$twres);
|
||
&cmp ($len,0x40);
|
||
&jb (&label("xts_dec_three"));
|
||
|
||
&pshufd ($twres,$twtmp,0x13);
|
||
&pxor ($twtmp,$twtmp);
|
||
&movdqa ($inout5,$tweak); # put aside previous tweak
|
||
&paddq ($tweak,$tweak); # &psllq($tweak,1);
|
||
&pand ($twres,$twmask); # isolate carry and residue
|
||
&pcmpgtd($twtmp,$tweak); # broadcast upper bits
|
||
&pxor ($tweak,$twres);
|
||
&movdqa (&QWP(16*0,"esp"),$inout3);
|
||
&movdqa (&QWP(16*1,"esp"),$inout4);
|
||
&je (&label("xts_dec_four"));
|
||
|
||
&movdqa (&QWP(16*2,"esp"),$inout5);
|
||
&pshufd ($inout5,$twtmp,0x13);
|
||
&movdqa (&QWP(16*3,"esp"),$tweak);
|
||
&paddq ($tweak,$tweak); # &psllq($inout0,1);
|
||
&pand ($inout5,$twmask); # isolate carry and residue
|
||
&pxor ($inout5,$tweak);
|
||
|
||
&movdqu ($inout0,&QWP(16*0,$inp)); # load input
|
||
&movdqu ($inout1,&QWP(16*1,$inp));
|
||
&movdqu ($inout2,&QWP(16*2,$inp));
|
||
&pxor ($inout0,&QWP(16*0,"esp")); # input^=tweak
|
||
&movdqu ($inout3,&QWP(16*3,$inp));
|
||
&pxor ($inout1,&QWP(16*1,"esp"));
|
||
&movdqu ($inout4,&QWP(16*4,$inp));
|
||
&pxor ($inout2,&QWP(16*2,"esp"));
|
||
&lea ($inp,&DWP(16*5,$inp));
|
||
&pxor ($inout3,&QWP(16*3,"esp"));
|
||
&movdqa (&QWP(16*4,"esp"),$inout5); # save last tweak
|
||
&pxor ($inout4,$inout5);
|
||
|
||
&call ("_aesni_decrypt6");
|
||
|
||
&movaps ($tweak,&QWP(16*4,"esp")); # last tweak
|
||
&xorps ($inout0,&QWP(16*0,"esp")); # output^=tweak
|
||
&xorps ($inout1,&QWP(16*1,"esp"));
|
||
&xorps ($inout2,&QWP(16*2,"esp"));
|
||
&movups (&QWP(16*0,$out),$inout0); # write output
|
||
&xorps ($inout3,&QWP(16*3,"esp"));
|
||
&movups (&QWP(16*1,$out),$inout1);
|
||
&xorps ($inout4,$tweak);
|
||
&movups (&QWP(16*2,$out),$inout2);
|
||
&movups (&QWP(16*3,$out),$inout3);
|
||
&movups (&QWP(16*4,$out),$inout4);
|
||
&lea ($out,&DWP(16*5,$out));
|
||
&jmp (&label("xts_dec_done"));
|
||
|
||
&set_label("xts_dec_one",16);
|
||
&movups ($inout0,&QWP(16*0,$inp)); # load input
|
||
&lea ($inp,&DWP(16*1,$inp));
|
||
&xorps ($inout0,$inout3); # input^=tweak
|
||
if ($inline)
|
||
{ &aesni_inline_generate1("dec"); }
|
||
else
|
||
{ &call ("_aesni_decrypt1"); }
|
||
&xorps ($inout0,$inout3); # output^=tweak
|
||
&movups (&QWP(16*0,$out),$inout0); # write output
|
||
&lea ($out,&DWP(16*1,$out));
|
||
|
||
&movdqa ($tweak,$inout3); # last tweak
|
||
&jmp (&label("xts_dec_done"));
|
||
|
||
&set_label("xts_dec_two",16);
|
||
&movaps ($inout4,$tweak); # put aside last tweak
|
||
|
||
&movups ($inout0,&QWP(16*0,$inp)); # load input
|
||
&movups ($inout1,&QWP(16*1,$inp));
|
||
&lea ($inp,&DWP(16*2,$inp));
|
||
&xorps ($inout0,$inout3); # input^=tweak
|
||
&xorps ($inout1,$inout4);
|
||
|
||
&call ("_aesni_decrypt3");
|
||
|
||
&xorps ($inout0,$inout3); # output^=tweak
|
||
&xorps ($inout1,$inout4);
|
||
&movups (&QWP(16*0,$out),$inout0); # write output
|
||
&movups (&QWP(16*1,$out),$inout1);
|
||
&lea ($out,&DWP(16*2,$out));
|
||
|
||
&movdqa ($tweak,$inout4); # last tweak
|
||
&jmp (&label("xts_dec_done"));
|
||
|
||
&set_label("xts_dec_three",16);
|
||
&movaps ($inout5,$tweak); # put aside last tweak
|
||
&movups ($inout0,&QWP(16*0,$inp)); # load input
|
||
&movups ($inout1,&QWP(16*1,$inp));
|
||
&movups ($inout2,&QWP(16*2,$inp));
|
||
&lea ($inp,&DWP(16*3,$inp));
|
||
&xorps ($inout0,$inout3); # input^=tweak
|
||
&xorps ($inout1,$inout4);
|
||
&xorps ($inout2,$inout5);
|
||
|
||
&call ("_aesni_decrypt3");
|
||
|
||
&xorps ($inout0,$inout3); # output^=tweak
|
||
&xorps ($inout1,$inout4);
|
||
&xorps ($inout2,$inout5);
|
||
&movups (&QWP(16*0,$out),$inout0); # write output
|
||
&movups (&QWP(16*1,$out),$inout1);
|
||
&movups (&QWP(16*2,$out),$inout2);
|
||
&lea ($out,&DWP(16*3,$out));
|
||
|
||
&movdqa ($tweak,$inout5); # last tweak
|
||
&jmp (&label("xts_dec_done"));
|
||
|
||
&set_label("xts_dec_four",16);
|
||
&movaps ($inout4,$tweak); # put aside last tweak
|
||
|
||
&movups ($inout0,&QWP(16*0,$inp)); # load input
|
||
&movups ($inout1,&QWP(16*1,$inp));
|
||
&movups ($inout2,&QWP(16*2,$inp));
|
||
&xorps ($inout0,&QWP(16*0,"esp")); # input^=tweak
|
||
&movups ($inout3,&QWP(16*3,$inp));
|
||
&lea ($inp,&DWP(16*4,$inp));
|
||
&xorps ($inout1,&QWP(16*1,"esp"));
|
||
&xorps ($inout2,$inout5);
|
||
&xorps ($inout3,$inout4);
|
||
|
||
&call ("_aesni_decrypt4");
|
||
|
||
&xorps ($inout0,&QWP(16*0,"esp")); # output^=tweak
|
||
&xorps ($inout1,&QWP(16*1,"esp"));
|
||
&xorps ($inout2,$inout5);
|
||
&movups (&QWP(16*0,$out),$inout0); # write output
|
||
&xorps ($inout3,$inout4);
|
||
&movups (&QWP(16*1,$out),$inout1);
|
||
&movups (&QWP(16*2,$out),$inout2);
|
||
&movups (&QWP(16*3,$out),$inout3);
|
||
&lea ($out,&DWP(16*4,$out));
|
||
|
||
&movdqa ($tweak,$inout4); # last tweak
|
||
&jmp (&label("xts_dec_done"));
|
||
|
||
&set_label("xts_dec_done6x",16); # $tweak is pre-calculated
|
||
&mov ($len,&DWP(16*7+0,"esp")); # restore original $len
|
||
&and ($len,15);
|
||
&jz (&label("xts_dec_ret"));
|
||
&mov (&DWP(16*7+0,"esp"),$len); # save $len%16
|
||
&jmp (&label("xts_dec_only_one_more"));
|
||
|
||
&set_label("xts_dec_done",16);
|
||
&mov ($len,&DWP(16*7+0,"esp")); # restore original $len
|
||
&pxor ($twtmp,$twtmp);
|
||
&and ($len,15);
|
||
&jz (&label("xts_dec_ret"));
|
||
|
||
&pcmpgtd($twtmp,$tweak); # broadcast upper bits
|
||
&mov (&DWP(16*7+0,"esp"),$len); # save $len%16
|
||
&pshufd ($twres,$twtmp,0x13);
|
||
&pxor ($twtmp,$twtmp);
|
||
&movdqa ($twmask,&QWP(16*6,"esp"));
|
||
&paddq ($tweak,$tweak); # &psllq($tweak,1);
|
||
&pand ($twres,$twmask); # isolate carry and residue
|
||
&pcmpgtd($twtmp,$tweak); # broadcast upper bits
|
||
&pxor ($tweak,$twres);
|
||
|
||
&set_label("xts_dec_only_one_more");
|
||
&pshufd ($inout3,$twtmp,0x13);
|
||
&movdqa ($inout4,$tweak); # put aside previous tweak
|
||
&paddq ($tweak,$tweak); # &psllq($tweak,1);
|
||
&pand ($inout3,$twmask); # isolate carry and residue
|
||
&pxor ($inout3,$tweak);
|
||
|
||
&mov ($key,$key_); # restore $key
|
||
&mov ($rounds,$rounds_); # restore $rounds
|
||
|
||
&movups ($inout0,&QWP(0,$inp)); # load input
|
||
&xorps ($inout0,$inout3); # input^=tweak
|
||
if ($inline)
|
||
{ &aesni_inline_generate1("dec"); }
|
||
else
|
||
{ &call ("_aesni_decrypt1"); }
|
||
&xorps ($inout0,$inout3); # output^=tweak
|
||
&movups (&QWP(0,$out),$inout0); # write output
|
||
|
||
&set_label("xts_dec_steal");
|
||
&movz ($rounds,&BP(16,$inp));
|
||
&movz ($key,&BP(0,$out));
|
||
&lea ($inp,&DWP(1,$inp));
|
||
&mov (&BP(0,$out),&LB($rounds));
|
||
&mov (&BP(16,$out),&LB($key));
|
||
&lea ($out,&DWP(1,$out));
|
||
&sub ($len,1);
|
||
&jnz (&label("xts_dec_steal"));
|
||
|
||
&sub ($out,&DWP(16*7+0,"esp")); # rewind $out
|
||
&mov ($key,$key_); # restore $key
|
||
&mov ($rounds,$rounds_); # restore $rounds
|
||
|
||
&movups ($inout0,&QWP(0,$out)); # load input
|
||
&xorps ($inout0,$inout4); # input^=tweak
|
||
if ($inline)
|
||
{ &aesni_inline_generate1("dec"); }
|
||
else
|
||
{ &call ("_aesni_decrypt1"); }
|
||
&xorps ($inout0,$inout4); # output^=tweak
|
||
&movups (&QWP(0,$out),$inout0); # write output
|
||
|
||
&set_label("xts_dec_ret");
|
||
&mov ("esp",&DWP(16*7+4,"esp")); # restore %esp
|
||
&function_end("aesni_xts_decrypt");
|
||
}
|
||
}
|
||
|
||
######################################################################
|
||
# void $PREFIX_cbc_encrypt (const void *inp, void *out,
|
||
# size_t length, const AES_KEY *key,
|
||
# unsigned char *ivp,const int enc);
|
||
&function_begin("${PREFIX}_cbc_encrypt");
|
||
&mov ($inp,&wparam(0));
|
||
&mov ($rounds_,"esp");
|
||
&mov ($out,&wparam(1));
|
||
&sub ($rounds_,24);
|
||
&mov ($len,&wparam(2));
|
||
&and ($rounds_,-16);
|
||
&mov ($key,&wparam(3));
|
||
&mov ($key_,&wparam(4));
|
||
&test ($len,$len);
|
||
&jz (&label("cbc_abort"));
|
||
|
||
&cmp (&wparam(5),0);
|
||
&xchg ($rounds_,"esp"); # alloca
|
||
&movups ($ivec,&QWP(0,$key_)); # load IV
|
||
&mov ($rounds,&DWP(240,$key));
|
||
&mov ($key_,$key); # backup $key
|
||
&mov (&DWP(16,"esp"),$rounds_); # save original %esp
|
||
&mov ($rounds_,$rounds); # backup $rounds
|
||
&je (&label("cbc_decrypt"));
|
||
|
||
&movaps ($inout0,$ivec);
|
||
&cmp ($len,16);
|
||
&jb (&label("cbc_enc_tail"));
|
||
&sub ($len,16);
|
||
&jmp (&label("cbc_enc_loop"));
|
||
|
||
&set_label("cbc_enc_loop",16);
|
||
&movups ($ivec,&QWP(0,$inp)); # input actually
|
||
&lea ($inp,&DWP(16,$inp));
|
||
if ($inline)
|
||
{ &aesni_inline_generate1("enc",$inout0,$ivec); }
|
||
else
|
||
{ &xorps($inout0,$ivec); &call("_aesni_encrypt1"); }
|
||
&mov ($rounds,$rounds_); # restore $rounds
|
||
&mov ($key,$key_); # restore $key
|
||
&movups (&QWP(0,$out),$inout0); # store output
|
||
&lea ($out,&DWP(16,$out));
|
||
&sub ($len,16);
|
||
&jnc (&label("cbc_enc_loop"));
|
||
&add ($len,16);
|
||
&jnz (&label("cbc_enc_tail"));
|
||
&movaps ($ivec,$inout0);
|
||
&jmp (&label("cbc_ret"));
|
||
|
||
&set_label("cbc_enc_tail");
|
||
&mov ("ecx",$len); # zaps $rounds
|
||
&data_word(0xA4F3F689); # rep movsb
|
||
&mov ("ecx",16); # zero tail
|
||
&sub ("ecx",$len);
|
||
&xor ("eax","eax"); # zaps $len
|
||
&data_word(0xAAF3F689); # rep stosb
|
||
&lea ($out,&DWP(-16,$out)); # rewind $out by 1 block
|
||
&mov ($rounds,$rounds_); # restore $rounds
|
||
&mov ($inp,$out); # $inp and $out are the same
|
||
&mov ($key,$key_); # restore $key
|
||
&jmp (&label("cbc_enc_loop"));
|
||
######################################################################
|
||
&set_label("cbc_decrypt",16);
|
||
&cmp ($len,0x50);
|
||
&jbe (&label("cbc_dec_tail"));
|
||
&movaps (&QWP(0,"esp"),$ivec); # save IV
|
||
&sub ($len,0x50);
|
||
&jmp (&label("cbc_dec_loop6_enter"));
|
||
|
||
&set_label("cbc_dec_loop6",16);
|
||
&movaps (&QWP(0,"esp"),$rndkey0); # save IV
|
||
&movups (&QWP(0,$out),$inout5);
|
||
&lea ($out,&DWP(0x10,$out));
|
||
&set_label("cbc_dec_loop6_enter");
|
||
&movdqu ($inout0,&QWP(0,$inp));
|
||
&movdqu ($inout1,&QWP(0x10,$inp));
|
||
&movdqu ($inout2,&QWP(0x20,$inp));
|
||
&movdqu ($inout3,&QWP(0x30,$inp));
|
||
&movdqu ($inout4,&QWP(0x40,$inp));
|
||
&movdqu ($inout5,&QWP(0x50,$inp));
|
||
|
||
&call ("_aesni_decrypt6");
|
||
|
||
&movups ($rndkey1,&QWP(0,$inp));
|
||
&movups ($rndkey0,&QWP(0x10,$inp));
|
||
&xorps ($inout0,&QWP(0,"esp")); # ^=IV
|
||
&xorps ($inout1,$rndkey1);
|
||
&movups ($rndkey1,&QWP(0x20,$inp));
|
||
&xorps ($inout2,$rndkey0);
|
||
&movups ($rndkey0,&QWP(0x30,$inp));
|
||
&xorps ($inout3,$rndkey1);
|
||
&movups ($rndkey1,&QWP(0x40,$inp));
|
||
&xorps ($inout4,$rndkey0);
|
||
&movups ($rndkey0,&QWP(0x50,$inp)); # IV
|
||
&xorps ($inout5,$rndkey1);
|
||
&movups (&QWP(0,$out),$inout0);
|
||
&movups (&QWP(0x10,$out),$inout1);
|
||
&lea ($inp,&DWP(0x60,$inp));
|
||
&movups (&QWP(0x20,$out),$inout2);
|
||
&mov ($rounds,$rounds_); # restore $rounds
|
||
&movups (&QWP(0x30,$out),$inout3);
|
||
&mov ($key,$key_); # restore $key
|
||
&movups (&QWP(0x40,$out),$inout4);
|
||
&lea ($out,&DWP(0x50,$out));
|
||
&sub ($len,0x60);
|
||
&ja (&label("cbc_dec_loop6"));
|
||
|
||
&movaps ($inout0,$inout5);
|
||
&movaps ($ivec,$rndkey0);
|
||
&add ($len,0x50);
|
||
&jle (&label("cbc_dec_tail_collected"));
|
||
&movups (&QWP(0,$out),$inout0);
|
||
&lea ($out,&DWP(0x10,$out));
|
||
&set_label("cbc_dec_tail");
|
||
&movups ($inout0,&QWP(0,$inp));
|
||
&movaps ($in0,$inout0);
|
||
&cmp ($len,0x10);
|
||
&jbe (&label("cbc_dec_one"));
|
||
|
||
&movups ($inout1,&QWP(0x10,$inp));
|
||
&movaps ($in1,$inout1);
|
||
&cmp ($len,0x20);
|
||
&jbe (&label("cbc_dec_two"));
|
||
|
||
&movups ($inout2,&QWP(0x20,$inp));
|
||
&cmp ($len,0x30);
|
||
&jbe (&label("cbc_dec_three"));
|
||
|
||
&movups ($inout3,&QWP(0x30,$inp));
|
||
&cmp ($len,0x40);
|
||
&jbe (&label("cbc_dec_four"));
|
||
|
||
&movups ($inout4,&QWP(0x40,$inp));
|
||
&movaps (&QWP(0,"esp"),$ivec); # save IV
|
||
&movups ($inout0,&QWP(0,$inp));
|
||
&xorps ($inout5,$inout5);
|
||
&call ("_aesni_decrypt6");
|
||
&movups ($rndkey1,&QWP(0,$inp));
|
||
&movups ($rndkey0,&QWP(0x10,$inp));
|
||
&xorps ($inout0,&QWP(0,"esp")); # ^= IV
|
||
&xorps ($inout1,$rndkey1);
|
||
&movups ($rndkey1,&QWP(0x20,$inp));
|
||
&xorps ($inout2,$rndkey0);
|
||
&movups ($rndkey0,&QWP(0x30,$inp));
|
||
&xorps ($inout3,$rndkey1);
|
||
&movups ($ivec,&QWP(0x40,$inp)); # IV
|
||
&xorps ($inout4,$rndkey0);
|
||
&movups (&QWP(0,$out),$inout0);
|
||
&movups (&QWP(0x10,$out),$inout1);
|
||
&movups (&QWP(0x20,$out),$inout2);
|
||
&movups (&QWP(0x30,$out),$inout3);
|
||
&lea ($out,&DWP(0x40,$out));
|
||
&movaps ($inout0,$inout4);
|
||
&sub ($len,0x50);
|
||
&jmp (&label("cbc_dec_tail_collected"));
|
||
|
||
&set_label("cbc_dec_one",16);
|
||
if ($inline)
|
||
{ &aesni_inline_generate1("dec"); }
|
||
else
|
||
{ &call ("_aesni_decrypt1"); }
|
||
&xorps ($inout0,$ivec);
|
||
&movaps ($ivec,$in0);
|
||
&sub ($len,0x10);
|
||
&jmp (&label("cbc_dec_tail_collected"));
|
||
|
||
&set_label("cbc_dec_two",16);
|
||
&xorps ($inout2,$inout2);
|
||
&call ("_aesni_decrypt3");
|
||
&xorps ($inout0,$ivec);
|
||
&xorps ($inout1,$in0);
|
||
&movups (&QWP(0,$out),$inout0);
|
||
&movaps ($inout0,$inout1);
|
||
&lea ($out,&DWP(0x10,$out));
|
||
&movaps ($ivec,$in1);
|
||
&sub ($len,0x20);
|
||
&jmp (&label("cbc_dec_tail_collected"));
|
||
|
||
&set_label("cbc_dec_three",16);
|
||
&call ("_aesni_decrypt3");
|
||
&xorps ($inout0,$ivec);
|
||
&xorps ($inout1,$in0);
|
||
&xorps ($inout2,$in1);
|
||
&movups (&QWP(0,$out),$inout0);
|
||
&movaps ($inout0,$inout2);
|
||
&movups (&QWP(0x10,$out),$inout1);
|
||
&lea ($out,&DWP(0x20,$out));
|
||
&movups ($ivec,&QWP(0x20,$inp));
|
||
&sub ($len,0x30);
|
||
&jmp (&label("cbc_dec_tail_collected"));
|
||
|
||
&set_label("cbc_dec_four",16);
|
||
&call ("_aesni_decrypt4");
|
||
&movups ($rndkey1,&QWP(0x10,$inp));
|
||
&movups ($rndkey0,&QWP(0x20,$inp));
|
||
&xorps ($inout0,$ivec);
|
||
&movups ($ivec,&QWP(0x30,$inp));
|
||
&xorps ($inout1,$in0);
|
||
&movups (&QWP(0,$out),$inout0);
|
||
&xorps ($inout2,$rndkey1);
|
||
&movups (&QWP(0x10,$out),$inout1);
|
||
&xorps ($inout3,$rndkey0);
|
||
&movups (&QWP(0x20,$out),$inout2);
|
||
&lea ($out,&DWP(0x30,$out));
|
||
&movaps ($inout0,$inout3);
|
||
&sub ($len,0x40);
|
||
|
||
&set_label("cbc_dec_tail_collected");
|
||
&and ($len,15);
|
||
&jnz (&label("cbc_dec_tail_partial"));
|
||
&movups (&QWP(0,$out),$inout0);
|
||
&jmp (&label("cbc_ret"));
|
||
|
||
&set_label("cbc_dec_tail_partial",16);
|
||
&movaps (&QWP(0,"esp"),$inout0);
|
||
&mov ("ecx",16);
|
||
&mov ($inp,"esp");
|
||
&sub ("ecx",$len);
|
||
&data_word(0xA4F3F689); # rep movsb
|
||
|
||
&set_label("cbc_ret");
|
||
&mov ("esp",&DWP(16,"esp")); # pull original %esp
|
||
&mov ($key_,&wparam(4));
|
||
&movups (&QWP(0,$key_),$ivec); # output IV
|
||
&set_label("cbc_abort");
|
||
&function_end("${PREFIX}_cbc_encrypt");
|
||
|
||
######################################################################
|
||
# Mechanical port from aesni-x86_64.pl.
|
||
#
|
||
# _aesni_set_encrypt_key is private interface,
|
||
# input:
|
||
# "eax" const unsigned char *userKey
|
||
# $rounds int bits
|
||
# $key AES_KEY *key
|
||
# output:
|
||
# "eax" return code
|
||
# $round rounds
|
||
|
||
&function_begin_B("_aesni_set_encrypt_key");
|
||
&test ("eax","eax");
|
||
&jz (&label("bad_pointer"));
|
||
&test ($key,$key);
|
||
&jz (&label("bad_pointer"));
|
||
|
||
&movups ("xmm0",&QWP(0,"eax")); # pull first 128 bits of *userKey
|
||
&xorps ("xmm4","xmm4"); # low dword of xmm4 is assumed 0
|
||
&lea ($key,&DWP(16,$key));
|
||
&cmp ($rounds,256);
|
||
&je (&label("14rounds"));
|
||
&cmp ($rounds,192);
|
||
&je (&label("12rounds"));
|
||
&cmp ($rounds,128);
|
||
&jne (&label("bad_keybits"));
|
||
|
||
&set_label("10rounds",16);
|
||
&mov ($rounds,9);
|
||
&$movekey (&QWP(-16,$key),"xmm0"); # round 0
|
||
&aeskeygenassist("xmm1","xmm0",0x01); # round 1
|
||
&call (&label("key_128_cold"));
|
||
&aeskeygenassist("xmm1","xmm0",0x2); # round 2
|
||
&call (&label("key_128"));
|
||
&aeskeygenassist("xmm1","xmm0",0x04); # round 3
|
||
&call (&label("key_128"));
|
||
&aeskeygenassist("xmm1","xmm0",0x08); # round 4
|
||
&call (&label("key_128"));
|
||
&aeskeygenassist("xmm1","xmm0",0x10); # round 5
|
||
&call (&label("key_128"));
|
||
&aeskeygenassist("xmm1","xmm0",0x20); # round 6
|
||
&call (&label("key_128"));
|
||
&aeskeygenassist("xmm1","xmm0",0x40); # round 7
|
||
&call (&label("key_128"));
|
||
&aeskeygenassist("xmm1","xmm0",0x80); # round 8
|
||
&call (&label("key_128"));
|
||
&aeskeygenassist("xmm1","xmm0",0x1b); # round 9
|
||
&call (&label("key_128"));
|
||
&aeskeygenassist("xmm1","xmm0",0x36); # round 10
|
||
&call (&label("key_128"));
|
||
&$movekey (&QWP(0,$key),"xmm0");
|
||
&mov (&DWP(80,$key),$rounds);
|
||
&xor ("eax","eax");
|
||
&ret();
|
||
|
||
&set_label("key_128",16);
|
||
&$movekey (&QWP(0,$key),"xmm0");
|
||
&lea ($key,&DWP(16,$key));
|
||
&set_label("key_128_cold");
|
||
&shufps ("xmm4","xmm0",0b00010000);
|
||
&xorps ("xmm0","xmm4");
|
||
&shufps ("xmm4","xmm0",0b10001100);
|
||
&xorps ("xmm0","xmm4");
|
||
&shufps ("xmm1","xmm1",0b11111111); # critical path
|
||
&xorps ("xmm0","xmm1");
|
||
&ret();
|
||
|
||
&set_label("12rounds",16);
|
||
&movq ("xmm2",&QWP(16,"eax")); # remaining 1/3 of *userKey
|
||
&mov ($rounds,11);
|
||
&$movekey (&QWP(-16,$key),"xmm0"); # round 0
|
||
&aeskeygenassist("xmm1","xmm2",0x01); # round 1,2
|
||
&call (&label("key_192a_cold"));
|
||
&aeskeygenassist("xmm1","xmm2",0x02); # round 2,3
|
||
&call (&label("key_192b"));
|
||
&aeskeygenassist("xmm1","xmm2",0x04); # round 4,5
|
||
&call (&label("key_192a"));
|
||
&aeskeygenassist("xmm1","xmm2",0x08); # round 5,6
|
||
&call (&label("key_192b"));
|
||
&aeskeygenassist("xmm1","xmm2",0x10); # round 7,8
|
||
&call (&label("key_192a"));
|
||
&aeskeygenassist("xmm1","xmm2",0x20); # round 8,9
|
||
&call (&label("key_192b"));
|
||
&aeskeygenassist("xmm1","xmm2",0x40); # round 10,11
|
||
&call (&label("key_192a"));
|
||
&aeskeygenassist("xmm1","xmm2",0x80); # round 11,12
|
||
&call (&label("key_192b"));
|
||
&$movekey (&QWP(0,$key),"xmm0");
|
||
&mov (&DWP(48,$key),$rounds);
|
||
&xor ("eax","eax");
|
||
&ret();
|
||
|
||
&set_label("key_192a",16);
|
||
&$movekey (&QWP(0,$key),"xmm0");
|
||
&lea ($key,&DWP(16,$key));
|
||
&set_label("key_192a_cold",16);
|
||
&movaps ("xmm5","xmm2");
|
||
&set_label("key_192b_warm");
|
||
&shufps ("xmm4","xmm0",0b00010000);
|
||
&movdqa ("xmm3","xmm2");
|
||
&xorps ("xmm0","xmm4");
|
||
&shufps ("xmm4","xmm0",0b10001100);
|
||
&pslldq ("xmm3",4);
|
||
&xorps ("xmm0","xmm4");
|
||
&pshufd ("xmm1","xmm1",0b01010101); # critical path
|
||
&pxor ("xmm2","xmm3");
|
||
&pxor ("xmm0","xmm1");
|
||
&pshufd ("xmm3","xmm0",0b11111111);
|
||
&pxor ("xmm2","xmm3");
|
||
&ret();
|
||
|
||
&set_label("key_192b",16);
|
||
&movaps ("xmm3","xmm0");
|
||
&shufps ("xmm5","xmm0",0b01000100);
|
||
&$movekey (&QWP(0,$key),"xmm5");
|
||
&shufps ("xmm3","xmm2",0b01001110);
|
||
&$movekey (&QWP(16,$key),"xmm3");
|
||
&lea ($key,&DWP(32,$key));
|
||
&jmp (&label("key_192b_warm"));
|
||
|
||
&set_label("14rounds",16);
|
||
&movups ("xmm2",&QWP(16,"eax")); # remaining half of *userKey
|
||
&mov ($rounds,13);
|
||
&lea ($key,&DWP(16,$key));
|
||
&$movekey (&QWP(-32,$key),"xmm0"); # round 0
|
||
&$movekey (&QWP(-16,$key),"xmm2"); # round 1
|
||
&aeskeygenassist("xmm1","xmm2",0x01); # round 2
|
||
&call (&label("key_256a_cold"));
|
||
&aeskeygenassist("xmm1","xmm0",0x01); # round 3
|
||
&call (&label("key_256b"));
|
||
&aeskeygenassist("xmm1","xmm2",0x02); # round 4
|
||
&call (&label("key_256a"));
|
||
&aeskeygenassist("xmm1","xmm0",0x02); # round 5
|
||
&call (&label("key_256b"));
|
||
&aeskeygenassist("xmm1","xmm2",0x04); # round 6
|
||
&call (&label("key_256a"));
|
||
&aeskeygenassist("xmm1","xmm0",0x04); # round 7
|
||
&call (&label("key_256b"));
|
||
&aeskeygenassist("xmm1","xmm2",0x08); # round 8
|
||
&call (&label("key_256a"));
|
||
&aeskeygenassist("xmm1","xmm0",0x08); # round 9
|
||
&call (&label("key_256b"));
|
||
&aeskeygenassist("xmm1","xmm2",0x10); # round 10
|
||
&call (&label("key_256a"));
|
||
&aeskeygenassist("xmm1","xmm0",0x10); # round 11
|
||
&call (&label("key_256b"));
|
||
&aeskeygenassist("xmm1","xmm2",0x20); # round 12
|
||
&call (&label("key_256a"));
|
||
&aeskeygenassist("xmm1","xmm0",0x20); # round 13
|
||
&call (&label("key_256b"));
|
||
&aeskeygenassist("xmm1","xmm2",0x40); # round 14
|
||
&call (&label("key_256a"));
|
||
&$movekey (&QWP(0,$key),"xmm0");
|
||
&mov (&DWP(16,$key),$rounds);
|
||
&xor ("eax","eax");
|
||
&ret();
|
||
|
||
&set_label("key_256a",16);
|
||
&$movekey (&QWP(0,$key),"xmm2");
|
||
&lea ($key,&DWP(16,$key));
|
||
&set_label("key_256a_cold");
|
||
&shufps ("xmm4","xmm0",0b00010000);
|
||
&xorps ("xmm0","xmm4");
|
||
&shufps ("xmm4","xmm0",0b10001100);
|
||
&xorps ("xmm0","xmm4");
|
||
&shufps ("xmm1","xmm1",0b11111111); # critical path
|
||
&xorps ("xmm0","xmm1");
|
||
&ret();
|
||
|
||
&set_label("key_256b",16);
|
||
&$movekey (&QWP(0,$key),"xmm0");
|
||
&lea ($key,&DWP(16,$key));
|
||
|
||
&shufps ("xmm4","xmm2",0b00010000);
|
||
&xorps ("xmm2","xmm4");
|
||
&shufps ("xmm4","xmm2",0b10001100);
|
||
&xorps ("xmm2","xmm4");
|
||
&shufps ("xmm1","xmm1",0b10101010); # critical path
|
||
&xorps ("xmm2","xmm1");
|
||
&ret();
|
||
|
||
&set_label("bad_pointer",4);
|
||
&mov ("eax",-1);
|
||
&ret ();
|
||
&set_label("bad_keybits",4);
|
||
&mov ("eax",-2);
|
||
&ret ();
|
||
&function_end_B("_aesni_set_encrypt_key");
|
||
|
||
# int $PREFIX_set_encrypt_key (const unsigned char *userKey, int bits,
|
||
# AES_KEY *key)
|
||
&function_begin_B("${PREFIX}_set_encrypt_key");
|
||
&mov ("eax",&wparam(0));
|
||
&mov ($rounds,&wparam(1));
|
||
&mov ($key,&wparam(2));
|
||
&call ("_aesni_set_encrypt_key");
|
||
&ret ();
|
||
&function_end_B("${PREFIX}_set_encrypt_key");
|
||
|
||
# int $PREFIX_set_decrypt_key (const unsigned char *userKey, int bits,
|
||
# AES_KEY *key)
|
||
&function_begin_B("${PREFIX}_set_decrypt_key");
|
||
&mov ("eax",&wparam(0));
|
||
&mov ($rounds,&wparam(1));
|
||
&mov ($key,&wparam(2));
|
||
&call ("_aesni_set_encrypt_key");
|
||
&mov ($key,&wparam(2));
|
||
&shl ($rounds,4); # rounds-1 after _aesni_set_encrypt_key
|
||
&test ("eax","eax");
|
||
&jnz (&label("dec_key_ret"));
|
||
&lea ("eax",&DWP(16,$key,$rounds)); # end of key schedule
|
||
|
||
&$movekey ("xmm0",&QWP(0,$key)); # just swap
|
||
&$movekey ("xmm1",&QWP(0,"eax"));
|
||
&$movekey (&QWP(0,"eax"),"xmm0");
|
||
&$movekey (&QWP(0,$key),"xmm1");
|
||
&lea ($key,&DWP(16,$key));
|
||
&lea ("eax",&DWP(-16,"eax"));
|
||
|
||
&set_label("dec_key_inverse");
|
||
&$movekey ("xmm0",&QWP(0,$key)); # swap and inverse
|
||
&$movekey ("xmm1",&QWP(0,"eax"));
|
||
&aesimc ("xmm0","xmm0");
|
||
&aesimc ("xmm1","xmm1");
|
||
&lea ($key,&DWP(16,$key));
|
||
&lea ("eax",&DWP(-16,"eax"));
|
||
&$movekey (&QWP(16,"eax"),"xmm0");
|
||
&$movekey (&QWP(-16,$key),"xmm1");
|
||
&cmp ("eax",$key);
|
||
&ja (&label("dec_key_inverse"));
|
||
|
||
&$movekey ("xmm0",&QWP(0,$key)); # inverse middle
|
||
&aesimc ("xmm0","xmm0");
|
||
&$movekey (&QWP(0,$key),"xmm0");
|
||
|
||
&xor ("eax","eax"); # return success
|
||
&set_label("dec_key_ret");
|
||
&ret ();
|
||
&function_end_B("${PREFIX}_set_decrypt_key");
|
||
&asciz("AES for Intel AES-NI, CRYPTOGAMS by <appro\@openssl.org>");
|
||
|
||
&asm_finish();
|