mirror of
https://github.com/openssl/openssl.git
synced 2024-12-15 06:01:37 +08:00
b646179229
Reviewed-by: Neil Horman <nhorman@openssl.org>
Release: yes
(cherry picked from commit 0ce7d1f355)
Reviewed-by: Hugo Landau <hlandau@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/24034)
1554 lines
38 KiB
Raku
1554 lines
38 KiB
Raku
#! /usr/bin/env perl
|
|
# Copyright 2022-2024 The OpenSSL Project Authors. All Rights Reserved.
|
|
#
|
|
# Licensed under the Apache License 2.0 (the "License"). You may not use
|
|
# this file except in compliance with the License. You can obtain a copy
|
|
# in the file LICENSE in the source distribution or at
|
|
# https://www.openssl.org/source/license.html
|
|
|
|
#
|
|
# This module implements SM4 with ASIMD and AESE on AARCH64
|
|
#
|
|
# Dec 2022
|
|
#
|
|
|
|
# $output is the last argument if it looks like a file (it has an extension)
|
|
# $flavour is the first argument if it doesn't look like a file
|
|
$output = $#ARGV >= 0 && $ARGV[$#ARGV] =~ m|\.\w+$| ? pop : undef;
|
|
$flavour = $#ARGV >= 0 && $ARGV[0] !~ m|\.| ? shift : undef;
|
|
|
|
$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
|
|
( $xlate="${dir}arm-xlate.pl" and -f $xlate ) or
|
|
( $xlate="${dir}../../perlasm/arm-xlate.pl" and -f $xlate) or
|
|
die "can't locate arm-xlate.pl";
|
|
|
|
open OUT,"| \"$^X\" $xlate $flavour \"$output\""
|
|
or die "can't call $xlate: $!";
|
|
*STDOUT=*OUT;
|
|
|
|
$prefix="vpsm4_ex";
|
|
my @vtmp=map("v$_",(0..3));
|
|
my @qtmp=map("q$_",(0..3));
|
|
my @data=map("v$_",(4..7));
|
|
my @datax=map("v$_",(8..11));
|
|
my ($rk0,$rk1)=("v12","v13");
|
|
my ($rka,$rkb)=("v14","v15");
|
|
my @vtmpx=map("v$_",(12..15));
|
|
my ($vtmp4,$vtmp5)=("v24","v25");
|
|
my ($MaskV,$TAHMatV,$TALMatV,$ATAHMatV,$ATALMatV,$ANDMaskV)=("v26","v27","v28","v29","v30","v31");
|
|
my ($MaskQ,$TAHMatQ,$TALMatQ,$ATAHMatQ,$ATALMatQ,$ANDMaskQ)=("q26","q27","q28","q29","q30","q31");
|
|
|
|
my ($inp,$outp,$blocks,$rks)=("x0","x1","w2","x3");
|
|
my ($tmpw,$tmp,$wtmp0,$wtmp1,$wtmp2)=("w6","x6","w7","w8","w9");
|
|
my ($xtmp1,$xtmp2)=("x8","x9");
|
|
my ($ptr,$counter)=("x10","w11");
|
|
my ($word0,$word1,$word2,$word3)=("w12","w13","w14","w15");
|
|
|
|
sub rev32() {
|
|
my $dst = shift;
|
|
my $src = shift;
|
|
|
|
if ($src and ("$src" ne "$dst")) {
|
|
$code.=<<___;
|
|
#ifndef __AARCH64EB__
|
|
rev32 $dst.16b,$src.16b
|
|
#else
|
|
mov $dst.16b,$src.16b
|
|
#endif
|
|
___
|
|
} else {
|
|
$code.=<<___;
|
|
#ifndef __AARCH64EB__
|
|
rev32 $dst.16b,$dst.16b
|
|
#endif
|
|
___
|
|
}
|
|
}
|
|
|
|
sub rev32_armeb() {
|
|
my $dst = shift;
|
|
my $src = shift;
|
|
|
|
if ($src and ("$src" ne "$dst")) {
|
|
$code.=<<___;
|
|
#ifdef __AARCH64EB__
|
|
rev32 $dst.16b,$src.16b
|
|
#else
|
|
mov $dst.16b,$src.16b
|
|
#endif
|
|
___
|
|
} else {
|
|
$code.=<<___;
|
|
#ifdef __AARCH64EB__
|
|
rev32 $dst.16b,$dst.16b
|
|
#endif
|
|
___
|
|
}
|
|
}
|
|
|
|
sub rbit() {
|
|
my $dst = shift;
|
|
my $src = shift;
|
|
my $std = shift;
|
|
|
|
if ($src and ("$src" ne "$dst")) {
|
|
if ($std eq "_gb") {
|
|
$code.=<<___;
|
|
rbit $dst.16b,$src.16b
|
|
___
|
|
} else {
|
|
$code.=<<___;
|
|
mov $dst.16b,$src.16b
|
|
___
|
|
}
|
|
} else {
|
|
if ($std eq "_gb") {
|
|
$code.=<<___;
|
|
rbit $dst.16b,$src.16b
|
|
___
|
|
}
|
|
}
|
|
}
|
|
|
|
sub transpose() {
|
|
my ($dat0,$dat1,$dat2,$dat3,$vt0,$vt1,$vt2,$vt3) = @_;
|
|
|
|
$code.=<<___;
|
|
zip1 $vt0.4s,$dat0.4s,$dat1.4s
|
|
zip2 $vt1.4s,$dat0.4s,$dat1.4s
|
|
zip1 $vt2.4s,$dat2.4s,$dat3.4s
|
|
zip2 $vt3.4s,$dat2.4s,$dat3.4s
|
|
zip1 $dat0.2d,$vt0.2d,$vt2.2d
|
|
zip2 $dat1.2d,$vt0.2d,$vt2.2d
|
|
zip1 $dat2.2d,$vt1.2d,$vt3.2d
|
|
zip2 $dat3.2d,$vt1.2d,$vt3.2d
|
|
___
|
|
}
|
|
|
|
# matrix multiplication Mat*x = (lowerMat*x) ^ (higherMat*x)
|
|
sub mul_matrix() {
|
|
my $x = shift;
|
|
my $higherMat = shift;
|
|
my $lowerMat = shift;
|
|
my $tmp = shift;
|
|
$code.=<<___;
|
|
ushr $tmp.16b, $x.16b, 4
|
|
and $x.16b, $x.16b, $ANDMaskV.16b
|
|
tbl $x.16b, {$lowerMat.16b}, $x.16b
|
|
tbl $tmp.16b, {$higherMat.16b}, $tmp.16b
|
|
eor $x.16b, $x.16b, $tmp.16b
|
|
___
|
|
}
|
|
|
|
# sbox operations for 4-lane of words
|
|
# sbox operation for 4-lane of words
|
|
sub sbox() {
|
|
my $dat = shift;
|
|
|
|
$code.=<<___;
|
|
// optimize sbox using AESE instruction
|
|
tbl @vtmp[0].16b, {$dat.16b}, $MaskV.16b
|
|
___
|
|
&mul_matrix(@vtmp[0], $TAHMatV, $TALMatV, $vtmp4);
|
|
$code.=<<___;
|
|
eor @vtmp[1].16b, @vtmp[1].16b, @vtmp[1].16b
|
|
aese @vtmp[0].16b,@vtmp[1].16b
|
|
___
|
|
&mul_matrix(@vtmp[0], $ATAHMatV, $ATALMatV, $vtmp4);
|
|
$code.=<<___;
|
|
mov $dat.16b,@vtmp[0].16b
|
|
|
|
// linear transformation
|
|
ushr @vtmp[0].4s,$dat.4s,32-2
|
|
ushr @vtmp[1].4s,$dat.4s,32-10
|
|
ushr @vtmp[2].4s,$dat.4s,32-18
|
|
ushr @vtmp[3].4s,$dat.4s,32-24
|
|
sli @vtmp[0].4s,$dat.4s,2
|
|
sli @vtmp[1].4s,$dat.4s,10
|
|
sli @vtmp[2].4s,$dat.4s,18
|
|
sli @vtmp[3].4s,$dat.4s,24
|
|
eor $vtmp4.16b,@vtmp[0].16b,$dat.16b
|
|
eor $vtmp4.16b,$vtmp4.16b,$vtmp[1].16b
|
|
eor $dat.16b,@vtmp[2].16b,@vtmp[3].16b
|
|
eor $dat.16b,$dat.16b,$vtmp4.16b
|
|
___
|
|
}
|
|
|
|
# sbox operation for 8-lane of words
|
|
sub sbox_double() {
|
|
my $dat = shift;
|
|
my $datx = shift;
|
|
|
|
$code.=<<___;
|
|
// optimize sbox using AESE instruction
|
|
tbl @vtmp[0].16b, {$dat.16b}, $MaskV.16b
|
|
tbl @vtmp[1].16b, {$datx.16b}, $MaskV.16b
|
|
___
|
|
&mul_matrix(@vtmp[0], $TAHMatV, $TALMatV, $vtmp4);
|
|
&mul_matrix(@vtmp[1], $TAHMatV, $TALMatV, $vtmp4);
|
|
$code.=<<___;
|
|
eor $vtmp5.16b, $vtmp5.16b, $vtmp5.16b
|
|
aese @vtmp[0].16b,$vtmp5.16b
|
|
aese @vtmp[1].16b,$vtmp5.16b
|
|
___
|
|
&mul_matrix(@vtmp[0], $ATAHMatV, $ATALMatV,$vtmp4);
|
|
&mul_matrix(@vtmp[1], $ATAHMatV, $ATALMatV,$vtmp4);
|
|
$code.=<<___;
|
|
mov $dat.16b,@vtmp[0].16b
|
|
mov $datx.16b,@vtmp[1].16b
|
|
|
|
// linear transformation
|
|
ushr @vtmp[0].4s,$dat.4s,32-2
|
|
ushr $vtmp5.4s,$datx.4s,32-2
|
|
ushr @vtmp[1].4s,$dat.4s,32-10
|
|
ushr @vtmp[2].4s,$dat.4s,32-18
|
|
ushr @vtmp[3].4s,$dat.4s,32-24
|
|
sli @vtmp[0].4s,$dat.4s,2
|
|
sli $vtmp5.4s,$datx.4s,2
|
|
sli @vtmp[1].4s,$dat.4s,10
|
|
sli @vtmp[2].4s,$dat.4s,18
|
|
sli @vtmp[3].4s,$dat.4s,24
|
|
eor $vtmp4.16b,@vtmp[0].16b,$dat.16b
|
|
eor $vtmp4.16b,$vtmp4.16b,@vtmp[1].16b
|
|
eor $dat.16b,@vtmp[2].16b,@vtmp[3].16b
|
|
eor $dat.16b,$dat.16b,$vtmp4.16b
|
|
ushr @vtmp[1].4s,$datx.4s,32-10
|
|
ushr @vtmp[2].4s,$datx.4s,32-18
|
|
ushr @vtmp[3].4s,$datx.4s,32-24
|
|
sli @vtmp[1].4s,$datx.4s,10
|
|
sli @vtmp[2].4s,$datx.4s,18
|
|
sli @vtmp[3].4s,$datx.4s,24
|
|
eor $vtmp4.16b,$vtmp5.16b,$datx.16b
|
|
eor $vtmp4.16b,$vtmp4.16b,@vtmp[1].16b
|
|
eor $datx.16b,@vtmp[2].16b,@vtmp[3].16b
|
|
eor $datx.16b,$datx.16b,$vtmp4.16b
|
|
___
|
|
}
|
|
|
|
# sbox operation for one single word
|
|
sub sbox_1word () {
|
|
my $word = shift;
|
|
|
|
$code.=<<___;
|
|
mov @vtmp[3].s[0],$word
|
|
// optimize sbox using AESE instruction
|
|
tbl @vtmp[0].16b, {@vtmp[3].16b}, $MaskV.16b
|
|
___
|
|
&mul_matrix(@vtmp[0], $TAHMatV, $TALMatV, @vtmp[2]);
|
|
$code.=<<___;
|
|
eor @vtmp[1].16b, @vtmp[1].16b, @vtmp[1].16b
|
|
aese @vtmp[0].16b,@vtmp[1].16b
|
|
___
|
|
&mul_matrix(@vtmp[0], $ATAHMatV, $ATALMatV, @vtmp[2]);
|
|
$code.=<<___;
|
|
|
|
mov $wtmp0,@vtmp[0].s[0]
|
|
eor $word,$wtmp0,$wtmp0,ror #32-2
|
|
eor $word,$word,$wtmp0,ror #32-10
|
|
eor $word,$word,$wtmp0,ror #32-18
|
|
eor $word,$word,$wtmp0,ror #32-24
|
|
___
|
|
}
|
|
|
|
# sm4 for one block of data, in scalar registers word0/word1/word2/word3
|
|
sub sm4_1blk () {
|
|
my $kptr = shift;
|
|
|
|
$code.=<<___;
|
|
ldp $wtmp0,$wtmp1,[$kptr],8
|
|
// B0 ^= SBOX(B1 ^ B2 ^ B3 ^ RK0)
|
|
eor $tmpw,$word2,$word3
|
|
eor $wtmp2,$wtmp0,$word1
|
|
eor $tmpw,$tmpw,$wtmp2
|
|
___
|
|
&sbox_1word($tmpw);
|
|
$code.=<<___;
|
|
eor $word0,$word0,$tmpw
|
|
// B1 ^= SBOX(B0 ^ B2 ^ B3 ^ RK1)
|
|
eor $tmpw,$word2,$word3
|
|
eor $wtmp2,$word0,$wtmp1
|
|
eor $tmpw,$tmpw,$wtmp2
|
|
___
|
|
&sbox_1word($tmpw);
|
|
$code.=<<___;
|
|
ldp $wtmp0,$wtmp1,[$kptr],8
|
|
eor $word1,$word1,$tmpw
|
|
// B2 ^= SBOX(B0 ^ B1 ^ B3 ^ RK2)
|
|
eor $tmpw,$word0,$word1
|
|
eor $wtmp2,$wtmp0,$word3
|
|
eor $tmpw,$tmpw,$wtmp2
|
|
___
|
|
&sbox_1word($tmpw);
|
|
$code.=<<___;
|
|
eor $word2,$word2,$tmpw
|
|
// B3 ^= SBOX(B0 ^ B1 ^ B2 ^ RK3)
|
|
eor $tmpw,$word0,$word1
|
|
eor $wtmp2,$word2,$wtmp1
|
|
eor $tmpw,$tmpw,$wtmp2
|
|
___
|
|
&sbox_1word($tmpw);
|
|
$code.=<<___;
|
|
eor $word3,$word3,$tmpw
|
|
___
|
|
}
|
|
|
|
# sm4 for 4-lanes of data, in neon registers data0/data1/data2/data3
|
|
sub sm4_4blks () {
|
|
my $kptr = shift;
|
|
|
|
$code.=<<___;
|
|
ldp $wtmp0,$wtmp1,[$kptr],8
|
|
dup $rk0.4s,$wtmp0
|
|
dup $rk1.4s,$wtmp1
|
|
|
|
// B0 ^= SBOX(B1 ^ B2 ^ B3 ^ RK0)
|
|
eor $rka.16b,@data[2].16b,@data[3].16b
|
|
eor $rk0.16b,@data[1].16b,$rk0.16b
|
|
eor $rk0.16b,$rka.16b,$rk0.16b
|
|
___
|
|
&sbox($rk0);
|
|
$code.=<<___;
|
|
eor @data[0].16b,@data[0].16b,$rk0.16b
|
|
|
|
// B1 ^= SBOX(B0 ^ B2 ^ B3 ^ RK1)
|
|
eor $rka.16b,$rka.16b,@data[0].16b
|
|
eor $rk1.16b,$rka.16b,$rk1.16b
|
|
___
|
|
&sbox($rk1);
|
|
$code.=<<___;
|
|
ldp $wtmp0,$wtmp1,[$kptr],8
|
|
eor @data[1].16b,@data[1].16b,$rk1.16b
|
|
|
|
dup $rk0.4s,$wtmp0
|
|
dup $rk1.4s,$wtmp1
|
|
|
|
// B2 ^= SBOX(B0 ^ B1 ^ B3 ^ RK2)
|
|
eor $rka.16b,@data[0].16b,@data[1].16b
|
|
eor $rk0.16b,@data[3].16b,$rk0.16b
|
|
eor $rk0.16b,$rka.16b,$rk0.16b
|
|
___
|
|
&sbox($rk0);
|
|
$code.=<<___;
|
|
eor @data[2].16b,@data[2].16b,$rk0.16b
|
|
|
|
// B3 ^= SBOX(B0 ^ B1 ^ B2 ^ RK3)
|
|
eor $rka.16b,$rka.16b,@data[2].16b
|
|
eor $rk1.16b,$rka.16b,$rk1.16b
|
|
___
|
|
&sbox($rk1);
|
|
$code.=<<___;
|
|
eor @data[3].16b,@data[3].16b,$rk1.16b
|
|
___
|
|
}
|
|
|
|
# sm4 for 8 lanes of data, in neon registers
|
|
# data0/data1/data2/data3 datax0/datax1/datax2/datax3
|
|
sub sm4_8blks () {
|
|
my $kptr = shift;
|
|
|
|
$code.=<<___;
|
|
ldp $wtmp0,$wtmp1,[$kptr],8
|
|
// B0 ^= SBOX(B1 ^ B2 ^ B3 ^ RK0)
|
|
dup $rk0.4s,$wtmp0
|
|
eor $rka.16b,@data[2].16b,@data[3].16b
|
|
eor $rkb.16b,@datax[2].16b,@datax[3].16b
|
|
eor @vtmp[0].16b,@data[1].16b,$rk0.16b
|
|
eor @vtmp[1].16b,@datax[1].16b,$rk0.16b
|
|
eor $rk0.16b,$rka.16b,@vtmp[0].16b
|
|
eor $rk1.16b,$rkb.16b,@vtmp[1].16b
|
|
___
|
|
&sbox_double($rk0,$rk1);
|
|
$code.=<<___;
|
|
eor @data[0].16b,@data[0].16b,$rk0.16b
|
|
eor @datax[0].16b,@datax[0].16b,$rk1.16b
|
|
|
|
// B1 ^= SBOX(B0 ^ B2 ^ B3 ^ RK1)
|
|
dup $rk1.4s,$wtmp1
|
|
eor $rka.16b,$rka.16b,@data[0].16b
|
|
eor $rkb.16b,$rkb.16b,@datax[0].16b
|
|
eor $rk0.16b,$rka.16b,$rk1.16b
|
|
eor $rk1.16b,$rkb.16b,$rk1.16b
|
|
___
|
|
&sbox_double($rk0,$rk1);
|
|
$code.=<<___;
|
|
ldp $wtmp0,$wtmp1,[$kptr],8
|
|
eor @data[1].16b,@data[1].16b,$rk0.16b
|
|
eor @datax[1].16b,@datax[1].16b,$rk1.16b
|
|
|
|
// B2 ^= SBOX(B0 ^ B1 ^ B3 ^ RK2)
|
|
dup $rk0.4s,$wtmp0
|
|
eor $rka.16b,@data[0].16b,@data[1].16b
|
|
eor $rkb.16b,@datax[0].16b,@datax[1].16b
|
|
eor @vtmp[0].16b,@data[3].16b,$rk0.16b
|
|
eor @vtmp[1].16b,@datax[3].16b,$rk0.16b
|
|
eor $rk0.16b,$rka.16b,@vtmp[0].16b
|
|
eor $rk1.16b,$rkb.16b,@vtmp[1].16b
|
|
___
|
|
&sbox_double($rk0,$rk1);
|
|
$code.=<<___;
|
|
eor @data[2].16b,@data[2].16b,$rk0.16b
|
|
eor @datax[2].16b,@datax[2].16b,$rk1.16b
|
|
|
|
// B3 ^= SBOX(B0 ^ B1 ^ B2 ^ RK3)
|
|
dup $rk1.4s,$wtmp1
|
|
eor $rka.16b,$rka.16b,@data[2].16b
|
|
eor $rkb.16b,$rkb.16b,@datax[2].16b
|
|
eor $rk0.16b,$rka.16b,$rk1.16b
|
|
eor $rk1.16b,$rkb.16b,$rk1.16b
|
|
___
|
|
&sbox_double($rk0,$rk1);
|
|
$code.=<<___;
|
|
eor @data[3].16b,@data[3].16b,$rk0.16b
|
|
eor @datax[3].16b,@datax[3].16b,$rk1.16b
|
|
___
|
|
}
|
|
|
|
sub encrypt_1blk_norev() {
|
|
my $dat = shift;
|
|
|
|
$code.=<<___;
|
|
mov $ptr,$rks
|
|
mov $counter,#8
|
|
mov $word0,$dat.s[0]
|
|
mov $word1,$dat.s[1]
|
|
mov $word2,$dat.s[2]
|
|
mov $word3,$dat.s[3]
|
|
10:
|
|
___
|
|
&sm4_1blk($ptr);
|
|
$code.=<<___;
|
|
subs $counter,$counter,#1
|
|
b.ne 10b
|
|
mov $dat.s[0],$word3
|
|
mov $dat.s[1],$word2
|
|
mov $dat.s[2],$word1
|
|
mov $dat.s[3],$word0
|
|
___
|
|
}
|
|
|
|
sub encrypt_1blk() {
|
|
my $dat = shift;
|
|
|
|
&encrypt_1blk_norev($dat);
|
|
&rev32($dat,$dat);
|
|
}
|
|
|
|
sub encrypt_4blks() {
|
|
$code.=<<___;
|
|
mov $ptr,$rks
|
|
mov $counter,#8
|
|
10:
|
|
___
|
|
&sm4_4blks($ptr);
|
|
$code.=<<___;
|
|
subs $counter,$counter,#1
|
|
b.ne 10b
|
|
___
|
|
&rev32(@vtmp[3],@data[0]);
|
|
&rev32(@vtmp[2],@data[1]);
|
|
&rev32(@vtmp[1],@data[2]);
|
|
&rev32(@vtmp[0],@data[3]);
|
|
}
|
|
|
|
sub encrypt_8blks() {
|
|
$code.=<<___;
|
|
mov $ptr,$rks
|
|
mov $counter,#8
|
|
10:
|
|
___
|
|
&sm4_8blks($ptr);
|
|
$code.=<<___;
|
|
subs $counter,$counter,#1
|
|
b.ne 10b
|
|
___
|
|
&rev32(@vtmp[3],@data[0]);
|
|
&rev32(@vtmp[2],@data[1]);
|
|
&rev32(@vtmp[1],@data[2]);
|
|
&rev32(@vtmp[0],@data[3]);
|
|
&rev32(@data[3],@datax[0]);
|
|
&rev32(@data[2],@datax[1]);
|
|
&rev32(@data[1],@datax[2]);
|
|
&rev32(@data[0],@datax[3]);
|
|
}
|
|
|
|
sub load_sbox () {
|
|
my $data = shift;
|
|
|
|
$code.=<<___;
|
|
ldr $MaskQ, .Lsbox_magic
|
|
ldr $TAHMatQ, .Lsbox_magic+16
|
|
ldr $TALMatQ, .Lsbox_magic+32
|
|
ldr $ATAHMatQ, .Lsbox_magic+48
|
|
ldr $ATALMatQ, .Lsbox_magic+64
|
|
ldr $ANDMaskQ, .Lsbox_magic+80
|
|
___
|
|
}
|
|
|
|
sub mov_reg_to_vec() {
|
|
my $src0 = shift;
|
|
my $src1 = shift;
|
|
my $desv = shift;
|
|
$code.=<<___;
|
|
mov $desv.d[0],$src0
|
|
mov $desv.d[1],$src1
|
|
___
|
|
&rev32_armeb($desv,$desv);
|
|
}
|
|
|
|
sub mov_vec_to_reg() {
|
|
my $srcv = shift;
|
|
my $des0 = shift;
|
|
my $des1 = shift;
|
|
$code.=<<___;
|
|
mov $des0,$srcv.d[0]
|
|
mov $des1,$srcv.d[1]
|
|
___
|
|
}
|
|
|
|
sub compute_tweak() {
|
|
my $src0 = shift;
|
|
my $src1 = shift;
|
|
my $des0 = shift;
|
|
my $des1 = shift;
|
|
$code.=<<___;
|
|
mov $wtmp0,0x87
|
|
extr $xtmp2,$src1,$src1,#32
|
|
extr $des1,$src1,$src0,#63
|
|
and $wtmp1,$wtmp0,$wtmp2,asr#31
|
|
eor $des0,$xtmp1,$src0,lsl#1
|
|
___
|
|
}
|
|
|
|
sub compute_tweak_vec() {
|
|
my $src = shift;
|
|
my $des = shift;
|
|
my $std = shift;
|
|
&rbit(@vtmp[2],$src,$std);
|
|
$code.=<<___;
|
|
ldr @qtmp[0], .Lxts_magic
|
|
shl $des.16b, @vtmp[2].16b, #1
|
|
ext @vtmp[1].16b, @vtmp[2].16b, @vtmp[2].16b,#15
|
|
ushr @vtmp[1].16b, @vtmp[1].16b, #7
|
|
mul @vtmp[1].16b, @vtmp[1].16b, @vtmp[0].16b
|
|
eor $des.16b, $des.16b, @vtmp[1].16b
|
|
___
|
|
&rbit($des,$des,$std);
|
|
}
|
|
|
|
$code=<<___;
|
|
#include "arm_arch.h"
|
|
.arch armv8-a+crypto
|
|
.text
|
|
|
|
.type _${prefix}_consts,%object
|
|
.align 7
|
|
_${prefix}_consts:
|
|
.Lck:
|
|
.long 0x00070E15, 0x1C232A31, 0x383F464D, 0x545B6269
|
|
.long 0x70777E85, 0x8C939AA1, 0xA8AFB6BD, 0xC4CBD2D9
|
|
.long 0xE0E7EEF5, 0xFC030A11, 0x181F262D, 0x343B4249
|
|
.long 0x50575E65, 0x6C737A81, 0x888F969D, 0xA4ABB2B9
|
|
.long 0xC0C7CED5, 0xDCE3EAF1, 0xF8FF060D, 0x141B2229
|
|
.long 0x30373E45, 0x4C535A61, 0x686F767D, 0x848B9299
|
|
.long 0xA0A7AEB5, 0xBCC3CAD1, 0xD8DFE6ED, 0xF4FB0209
|
|
.long 0x10171E25, 0x2C333A41, 0x484F565D, 0x646B7279
|
|
.Lfk:
|
|
.quad 0x56aa3350a3b1bac6,0xb27022dc677d9197
|
|
.Lshuffles:
|
|
.quad 0x0B0A090807060504,0x030201000F0E0D0C
|
|
.Lxts_magic:
|
|
.quad 0x0101010101010187,0x0101010101010101
|
|
.Lsbox_magic:
|
|
.quad 0x0b0e0104070a0d00,0x0306090c0f020508
|
|
.quad 0x62185a2042387a00,0x22581a6002783a40
|
|
.quad 0x15df62a89e54e923,0xc10bb67c4a803df7
|
|
.quad 0xb9aa6b78c1d21300,0x1407c6d56c7fbead
|
|
.quad 0x6404462679195b3b,0xe383c1a1fe9edcbc
|
|
.quad 0x0f0f0f0f0f0f0f0f,0x0f0f0f0f0f0f0f0f
|
|
|
|
.size _${prefix}_consts,.-_${prefix}_consts
|
|
___
|
|
|
|
{{{
|
|
my ($key,$keys,$enc)=("x0","x1","w2");
|
|
my ($pointer,$schedules,$wtmp,$roundkey)=("x5","x6","w7","w8");
|
|
my ($vkey,$vfk,$vmap)=("v5","v6","v7");
|
|
$code.=<<___;
|
|
.type _${prefix}_set_key,%function
|
|
.align 4
|
|
_${prefix}_set_key:
|
|
AARCH64_VALID_CALL_TARGET
|
|
ld1 {$vkey.4s},[$key]
|
|
___
|
|
&load_sbox();
|
|
&rev32($vkey,$vkey);
|
|
$code.=<<___;
|
|
adr $pointer,.Lshuffles
|
|
ld1 {$vmap.2d},[$pointer]
|
|
adr $pointer,.Lfk
|
|
ld1 {$vfk.2d},[$pointer]
|
|
eor $vkey.16b,$vkey.16b,$vfk.16b
|
|
mov $schedules,#32
|
|
adr $pointer,.Lck
|
|
movi @vtmp[0].16b,#64
|
|
cbnz $enc,1f
|
|
add $keys,$keys,124
|
|
1:
|
|
mov $wtmp,$vkey.s[1]
|
|
ldr $roundkey,[$pointer],#4
|
|
eor $roundkey,$roundkey,$wtmp
|
|
mov $wtmp,$vkey.s[2]
|
|
eor $roundkey,$roundkey,$wtmp
|
|
mov $wtmp,$vkey.s[3]
|
|
eor $roundkey,$roundkey,$wtmp
|
|
// optimize sbox using AESE instruction
|
|
mov @data[0].s[0],$roundkey
|
|
tbl @vtmp[0].16b, {@data[0].16b}, $MaskV.16b
|
|
___
|
|
&mul_matrix(@vtmp[0], $TAHMatV, $TALMatV, @vtmp[2]);
|
|
$code.=<<___;
|
|
eor @vtmp[1].16b, @vtmp[1].16b, @vtmp[1].16b
|
|
aese @vtmp[0].16b,@vtmp[1].16b
|
|
___
|
|
&mul_matrix(@vtmp[0], $ATAHMatV, $ATALMatV, @vtmp[2]);
|
|
$code.=<<___;
|
|
mov $wtmp,@vtmp[0].s[0]
|
|
eor $roundkey,$wtmp,$wtmp,ror #19
|
|
eor $roundkey,$roundkey,$wtmp,ror #9
|
|
mov $wtmp,$vkey.s[0]
|
|
eor $roundkey,$roundkey,$wtmp
|
|
mov $vkey.s[0],$roundkey
|
|
cbz $enc,2f
|
|
str $roundkey,[$keys],#4
|
|
b 3f
|
|
2:
|
|
str $roundkey,[$keys],#-4
|
|
3:
|
|
tbl $vkey.16b,{$vkey.16b},$vmap.16b
|
|
subs $schedules,$schedules,#1
|
|
b.ne 1b
|
|
ret
|
|
.size _${prefix}_set_key,.-_${prefix}_set_key
|
|
___
|
|
}}}
|
|
|
|
|
|
{{{
|
|
$code.=<<___;
|
|
.type _${prefix}_enc_4blks,%function
|
|
.align 4
|
|
_${prefix}_enc_4blks:
|
|
AARCH64_VALID_CALL_TARGET
|
|
___
|
|
&encrypt_4blks();
|
|
$code.=<<___;
|
|
ret
|
|
.size _${prefix}_enc_4blks,.-_${prefix}_enc_4blks
|
|
___
|
|
}}}
|
|
|
|
{{{
|
|
$code.=<<___;
|
|
.type _${prefix}_enc_8blks,%function
|
|
.align 4
|
|
_${prefix}_enc_8blks:
|
|
AARCH64_VALID_CALL_TARGET
|
|
___
|
|
&encrypt_8blks();
|
|
$code.=<<___;
|
|
ret
|
|
.size _${prefix}_enc_8blks,.-_${prefix}_enc_8blks
|
|
___
|
|
}}}
|
|
|
|
|
|
{{{
|
|
my ($key,$keys)=("x0","x1");
|
|
$code.=<<___;
|
|
.globl ${prefix}_set_encrypt_key
|
|
.type ${prefix}_set_encrypt_key,%function
|
|
.align 5
|
|
${prefix}_set_encrypt_key:
|
|
AARCH64_SIGN_LINK_REGISTER
|
|
stp x29,x30,[sp,#-16]!
|
|
mov w2,1
|
|
bl _${prefix}_set_key
|
|
ldp x29,x30,[sp],#16
|
|
AARCH64_VALIDATE_LINK_REGISTER
|
|
ret
|
|
.size ${prefix}_set_encrypt_key,.-${prefix}_set_encrypt_key
|
|
___
|
|
}}}
|
|
|
|
{{{
|
|
my ($key,$keys)=("x0","x1");
|
|
$code.=<<___;
|
|
.globl ${prefix}_set_decrypt_key
|
|
.type ${prefix}_set_decrypt_key,%function
|
|
.align 5
|
|
${prefix}_set_decrypt_key:
|
|
AARCH64_SIGN_LINK_REGISTER
|
|
stp x29,x30,[sp,#-16]!
|
|
mov w2,0
|
|
bl _${prefix}_set_key
|
|
ldp x29,x30,[sp],#16
|
|
AARCH64_VALIDATE_LINK_REGISTER
|
|
ret
|
|
.size ${prefix}_set_decrypt_key,.-${prefix}_set_decrypt_key
|
|
___
|
|
}}}
|
|
|
|
{{{
|
|
sub gen_block () {
|
|
my $dir = shift;
|
|
my ($inp,$outp,$rk)=map("x$_",(0..2));
|
|
|
|
$code.=<<___;
|
|
.globl ${prefix}_${dir}crypt
|
|
.type ${prefix}_${dir}crypt,%function
|
|
.align 5
|
|
${prefix}_${dir}crypt:
|
|
AARCH64_VALID_CALL_TARGET
|
|
ld1 {@data[0].4s},[$inp]
|
|
___
|
|
&load_sbox();
|
|
&rev32(@data[0],@data[0]);
|
|
$code.=<<___;
|
|
mov $rks,$rk
|
|
___
|
|
&encrypt_1blk(@data[0]);
|
|
$code.=<<___;
|
|
st1 {@data[0].4s},[$outp]
|
|
ret
|
|
.size ${prefix}_${dir}crypt,.-${prefix}_${dir}crypt
|
|
___
|
|
}
|
|
&gen_block("en");
|
|
&gen_block("de");
|
|
}}}
|
|
|
|
{{{
|
|
$code.=<<___;
|
|
.globl ${prefix}_ecb_encrypt
|
|
.type ${prefix}_ecb_encrypt,%function
|
|
.align 5
|
|
${prefix}_ecb_encrypt:
|
|
AARCH64_SIGN_LINK_REGISTER
|
|
// convert length into blocks
|
|
lsr x2,x2,4
|
|
stp d8,d9,[sp,#-80]!
|
|
stp d10,d11,[sp,#16]
|
|
stp d12,d13,[sp,#32]
|
|
stp d14,d15,[sp,#48]
|
|
stp x29,x30,[sp,#64]
|
|
___
|
|
&load_sbox();
|
|
$code.=<<___;
|
|
.Lecb_8_blocks_process:
|
|
cmp $blocks,#8
|
|
b.lt .Lecb_4_blocks_process
|
|
ld4 {@data[0].4s,@data[1].4s,@data[2].4s,@data[3].4s},[$inp],#64
|
|
ld4 {@datax[0].4s,$datax[1].4s,@datax[2].4s,@datax[3].4s},[$inp],#64
|
|
___
|
|
&rev32(@data[0],@data[0]);
|
|
&rev32(@data[1],@data[1]);
|
|
&rev32(@data[2],@data[2]);
|
|
&rev32(@data[3],@data[3]);
|
|
&rev32(@datax[0],@datax[0]);
|
|
&rev32(@datax[1],@datax[1]);
|
|
&rev32(@datax[2],@datax[2]);
|
|
&rev32(@datax[3],@datax[3]);
|
|
$code.=<<___;
|
|
bl _${prefix}_enc_8blks
|
|
st4 {@vtmp[0].4s,@vtmp[1].4s,@vtmp[2].4s,@vtmp[3].4s},[$outp],#64
|
|
st4 {@data[0].4s,@data[1].4s,@data[2].4s,@data[3].4s},[$outp],#64
|
|
subs $blocks,$blocks,#8
|
|
b.gt .Lecb_8_blocks_process
|
|
b 100f
|
|
.Lecb_4_blocks_process:
|
|
cmp $blocks,#4
|
|
b.lt 1f
|
|
ld4 {@data[0].4s,@data[1].4s,@data[2].4s,@data[3].4s},[$inp],#64
|
|
___
|
|
&rev32(@data[0],@data[0]);
|
|
&rev32(@data[1],@data[1]);
|
|
&rev32(@data[2],@data[2]);
|
|
&rev32(@data[3],@data[3]);
|
|
$code.=<<___;
|
|
bl _${prefix}_enc_4blks
|
|
st4 {@vtmp[0].4s,@vtmp[1].4s,@vtmp[2].4s,@vtmp[3].4s},[$outp],#64
|
|
sub $blocks,$blocks,#4
|
|
1:
|
|
// process last block
|
|
cmp $blocks,#1
|
|
b.lt 100f
|
|
b.gt 1f
|
|
ld1 {@data[0].4s},[$inp]
|
|
___
|
|
&rev32(@data[0],@data[0]);
|
|
&encrypt_1blk(@data[0]);
|
|
$code.=<<___;
|
|
st1 {@data[0].4s},[$outp]
|
|
b 100f
|
|
1: // process last 2 blocks
|
|
ld4 {@data[0].s,@data[1].s,@data[2].s,@data[3].s}[0],[$inp],#16
|
|
ld4 {@data[0].s,@data[1].s,@data[2].s,@data[3].s}[1],[$inp],#16
|
|
cmp $blocks,#2
|
|
b.gt 1f
|
|
___
|
|
&rev32(@data[0],@data[0]);
|
|
&rev32(@data[1],@data[1]);
|
|
&rev32(@data[2],@data[2]);
|
|
&rev32(@data[3],@data[3]);
|
|
$code.=<<___;
|
|
bl _${prefix}_enc_4blks
|
|
st4 {@vtmp[0].s-@vtmp[3].s}[0],[$outp],#16
|
|
st4 {@vtmp[0].s-@vtmp[3].s}[1],[$outp]
|
|
b 100f
|
|
1: // process last 3 blocks
|
|
ld4 {@data[0].s,@data[1].s,@data[2].s,@data[3].s}[2],[$inp],#16
|
|
___
|
|
&rev32(@data[0],@data[0]);
|
|
&rev32(@data[1],@data[1]);
|
|
&rev32(@data[2],@data[2]);
|
|
&rev32(@data[3],@data[3]);
|
|
$code.=<<___;
|
|
bl _${prefix}_enc_4blks
|
|
st4 {@vtmp[0].s-@vtmp[3].s}[0],[$outp],#16
|
|
st4 {@vtmp[0].s-@vtmp[3].s}[1],[$outp],#16
|
|
st4 {@vtmp[0].s-@vtmp[3].s}[2],[$outp]
|
|
100:
|
|
ldp d10,d11,[sp,#16]
|
|
ldp d12,d13,[sp,#32]
|
|
ldp d14,d15,[sp,#48]
|
|
ldp x29,x30,[sp,#64]
|
|
ldp d8,d9,[sp],#80
|
|
AARCH64_VALIDATE_LINK_REGISTER
|
|
ret
|
|
.size ${prefix}_ecb_encrypt,.-${prefix}_ecb_encrypt
|
|
___
|
|
}}}
|
|
|
|
{{{
|
|
my ($len,$ivp,$enc)=("x2","x4","w5");
|
|
my $ivec0=("v3");
|
|
my $ivec1=("v15");
|
|
|
|
$code.=<<___;
|
|
.globl ${prefix}_cbc_encrypt
|
|
.type ${prefix}_cbc_encrypt,%function
|
|
.align 5
|
|
${prefix}_cbc_encrypt:
|
|
AARCH64_VALID_CALL_TARGET
|
|
lsr $len,$len,4
|
|
___
|
|
&load_sbox();
|
|
$code.=<<___;
|
|
cbz $enc,.Ldec
|
|
ld1 {$ivec0.4s},[$ivp]
|
|
.Lcbc_4_blocks_enc:
|
|
cmp $blocks,#4
|
|
b.lt 1f
|
|
ld1 {@data[0].4s,@data[1].4s,@data[2].4s,@data[3].4s},[$inp],#64
|
|
eor @data[0].16b,@data[0].16b,$ivec0.16b
|
|
___
|
|
&rev32(@data[1],@data[1]);
|
|
&rev32(@data[0],@data[0]);
|
|
&rev32(@data[2],@data[2]);
|
|
&rev32(@data[3],@data[3]);
|
|
&encrypt_1blk_norev(@data[0]);
|
|
$code.=<<___;
|
|
eor @data[1].16b,@data[1].16b,@data[0].16b
|
|
___
|
|
&encrypt_1blk_norev(@data[1]);
|
|
&rev32(@data[0],@data[0]);
|
|
|
|
$code.=<<___;
|
|
eor @data[2].16b,@data[2].16b,@data[1].16b
|
|
___
|
|
&encrypt_1blk_norev(@data[2]);
|
|
&rev32(@data[1],@data[1]);
|
|
$code.=<<___;
|
|
eor @data[3].16b,@data[3].16b,@data[2].16b
|
|
___
|
|
&encrypt_1blk_norev(@data[3]);
|
|
&rev32(@data[2],@data[2]);
|
|
&rev32(@data[3],@data[3]);
|
|
$code.=<<___;
|
|
orr $ivec0.16b,@data[3].16b,@data[3].16b
|
|
st1 {@data[0].4s,@data[1].4s,@data[2].4s,@data[3].4s},[$outp],#64
|
|
subs $blocks,$blocks,#4
|
|
b.ne .Lcbc_4_blocks_enc
|
|
b 2f
|
|
1:
|
|
subs $blocks,$blocks,#1
|
|
b.lt 2f
|
|
ld1 {@data[0].4s},[$inp],#16
|
|
eor $ivec0.16b,$ivec0.16b,@data[0].16b
|
|
___
|
|
&rev32($ivec0,$ivec0);
|
|
&encrypt_1blk($ivec0);
|
|
$code.=<<___;
|
|
st1 {$ivec0.4s},[$outp],#16
|
|
b 1b
|
|
2:
|
|
// save back IV
|
|
st1 {$ivec0.4s},[$ivp]
|
|
ret
|
|
|
|
.Ldec:
|
|
// decryption mode starts
|
|
AARCH64_SIGN_LINK_REGISTER
|
|
stp d8,d9,[sp,#-80]!
|
|
stp d10,d11,[sp,#16]
|
|
stp d12,d13,[sp,#32]
|
|
stp d14,d15,[sp,#48]
|
|
stp x29,x30,[sp,#64]
|
|
.Lcbc_8_blocks_dec:
|
|
cmp $blocks,#8
|
|
b.lt 1f
|
|
ld4 {@data[0].4s,@data[1].4s,@data[2].4s,@data[3].4s},[$inp]
|
|
add $ptr,$inp,#64
|
|
ld4 {@datax[0].4s,@datax[1].4s,@datax[2].4s,@datax[3].4s},[$ptr]
|
|
___
|
|
&rev32(@data[0],@data[0]);
|
|
&rev32(@data[1],@data[1]);
|
|
&rev32(@data[2],@data[2]);
|
|
&rev32(@data[3],$data[3]);
|
|
&rev32(@datax[0],@datax[0]);
|
|
&rev32(@datax[1],@datax[1]);
|
|
&rev32(@datax[2],@datax[2]);
|
|
&rev32(@datax[3],$datax[3]);
|
|
$code.=<<___;
|
|
bl _${prefix}_enc_8blks
|
|
___
|
|
&transpose(@vtmp,@datax);
|
|
&transpose(@data,@datax);
|
|
$code.=<<___;
|
|
ld1 {$ivec1.4s},[$ivp]
|
|
ld1 {@datax[0].4s,@datax[1].4s,@datax[2].4s,@datax[3].4s},[$inp],#64
|
|
// note ivec1 and vtmpx[3] are reusing the same register
|
|
// care needs to be taken to avoid conflict
|
|
eor @vtmp[0].16b,@vtmp[0].16b,$ivec1.16b
|
|
ld1 {@vtmpx[0].4s,@vtmpx[1].4s,@vtmpx[2].4s,@vtmpx[3].4s},[$inp],#64
|
|
eor @vtmp[1].16b,@vtmp[1].16b,@datax[0].16b
|
|
eor @vtmp[2].16b,@vtmp[2].16b,@datax[1].16b
|
|
eor @vtmp[3].16b,$vtmp[3].16b,@datax[2].16b
|
|
// save back IV
|
|
st1 {$vtmpx[3].4s}, [$ivp]
|
|
eor @data[0].16b,@data[0].16b,$datax[3].16b
|
|
eor @data[1].16b,@data[1].16b,@vtmpx[0].16b
|
|
eor @data[2].16b,@data[2].16b,@vtmpx[1].16b
|
|
eor @data[3].16b,$data[3].16b,@vtmpx[2].16b
|
|
st1 {@vtmp[0].4s,@vtmp[1].4s,@vtmp[2].4s,@vtmp[3].4s},[$outp],#64
|
|
st1 {@data[0].4s,@data[1].4s,@data[2].4s,@data[3].4s},[$outp],#64
|
|
subs $blocks,$blocks,#8
|
|
b.gt .Lcbc_8_blocks_dec
|
|
b.eq 100f
|
|
1:
|
|
ld1 {$ivec1.4s},[$ivp]
|
|
.Lcbc_4_blocks_dec:
|
|
cmp $blocks,#4
|
|
b.lt 1f
|
|
ld4 {@data[0].4s,@data[1].4s,@data[2].4s,@data[3].4s},[$inp]
|
|
___
|
|
&rev32(@data[0],@data[0]);
|
|
&rev32(@data[1],@data[1]);
|
|
&rev32(@data[2],@data[2]);
|
|
&rev32(@data[3],$data[3]);
|
|
$code.=<<___;
|
|
bl _${prefix}_enc_4blks
|
|
ld1 {@data[0].4s,@data[1].4s,@data[2].4s,@data[3].4s},[$inp],#64
|
|
___
|
|
&transpose(@vtmp,@datax);
|
|
$code.=<<___;
|
|
eor @vtmp[0].16b,@vtmp[0].16b,$ivec1.16b
|
|
eor @vtmp[1].16b,@vtmp[1].16b,@data[0].16b
|
|
orr $ivec1.16b,@data[3].16b,@data[3].16b
|
|
eor @vtmp[2].16b,@vtmp[2].16b,@data[1].16b
|
|
eor @vtmp[3].16b,$vtmp[3].16b,@data[2].16b
|
|
st1 {@vtmp[0].4s,@vtmp[1].4s,@vtmp[2].4s,@vtmp[3].4s},[$outp],#64
|
|
subs $blocks,$blocks,#4
|
|
b.gt .Lcbc_4_blocks_dec
|
|
// save back IV
|
|
st1 {@data[3].4s}, [$ivp]
|
|
b 100f
|
|
1: // last block
|
|
subs $blocks,$blocks,#1
|
|
b.lt 100f
|
|
b.gt 1f
|
|
ld1 {@data[0].4s},[$inp],#16
|
|
// save back IV
|
|
st1 {$data[0].4s}, [$ivp]
|
|
___
|
|
&rev32(@datax[0],@data[0]);
|
|
&encrypt_1blk(@datax[0]);
|
|
$code.=<<___;
|
|
eor @datax[0].16b,@datax[0].16b,$ivec1.16b
|
|
st1 {@datax[0].4s},[$outp],#16
|
|
b 100f
|
|
1: // last two blocks
|
|
ld4 {@data[0].s,@data[1].s,@data[2].s,@data[3].s}[0],[$inp]
|
|
add $ptr,$inp,#16
|
|
ld4 {@data[0].s,@data[1].s,@data[2].s,@data[3].s}[1],[$ptr],#16
|
|
subs $blocks,$blocks,1
|
|
b.gt 1f
|
|
___
|
|
&rev32(@data[0],@data[0]);
|
|
&rev32(@data[1],@data[1]);
|
|
&rev32(@data[2],@data[2]);
|
|
&rev32(@data[3],@data[3]);
|
|
$code.=<<___;
|
|
bl _${prefix}_enc_4blks
|
|
ld1 {@data[0].4s,@data[1].4s},[$inp],#32
|
|
___
|
|
&transpose(@vtmp,@datax);
|
|
$code.=<<___;
|
|
eor @vtmp[0].16b,@vtmp[0].16b,$ivec1.16b
|
|
eor @vtmp[1].16b,@vtmp[1].16b,@data[0].16b
|
|
st1 {@vtmp[0].4s,@vtmp[1].4s},[$outp],#32
|
|
// save back IV
|
|
st1 {@data[1].4s}, [$ivp]
|
|
b 100f
|
|
1: // last 3 blocks
|
|
ld4 {@data[0].s,@data[1].s,@data[2].s,@data[3].s}[2],[$ptr]
|
|
___
|
|
&rev32(@data[0],@data[0]);
|
|
&rev32(@data[1],@data[1]);
|
|
&rev32(@data[2],@data[2]);
|
|
&rev32(@data[3],@data[3]);
|
|
$code.=<<___;
|
|
bl _${prefix}_enc_4blks
|
|
ld1 {@data[0].4s,@data[1].4s,@data[2].4s},[$inp],#48
|
|
___
|
|
&transpose(@vtmp,@datax);
|
|
$code.=<<___;
|
|
eor @vtmp[0].16b,@vtmp[0].16b,$ivec1.16b
|
|
eor @vtmp[1].16b,@vtmp[1].16b,@data[0].16b
|
|
eor @vtmp[2].16b,@vtmp[2].16b,@data[1].16b
|
|
st1 {@vtmp[0].4s,@vtmp[1].4s,@vtmp[2].4s},[$outp],#48
|
|
// save back IV
|
|
st1 {@data[2].4s}, [$ivp]
|
|
100:
|
|
ldp d10,d11,[sp,#16]
|
|
ldp d12,d13,[sp,#32]
|
|
ldp d14,d15,[sp,#48]
|
|
ldp x29,x30,[sp,#64]
|
|
ldp d8,d9,[sp],#80
|
|
AARCH64_VALIDATE_LINK_REGISTER
|
|
ret
|
|
.size ${prefix}_cbc_encrypt,.-${prefix}_cbc_encrypt
|
|
___
|
|
}}}
|
|
|
|
{{{
|
|
my ($ivp)=("x4");
|
|
my ($ctr)=("w5");
|
|
my $ivec=("v3");
|
|
|
|
$code.=<<___;
|
|
.globl ${prefix}_ctr32_encrypt_blocks
|
|
.type ${prefix}_ctr32_encrypt_blocks,%function
|
|
.align 5
|
|
${prefix}_ctr32_encrypt_blocks:
|
|
AARCH64_VALID_CALL_TARGET
|
|
ld1 {$ivec.4s},[$ivp]
|
|
___
|
|
&rev32($ivec,$ivec);
|
|
&load_sbox();
|
|
$code.=<<___;
|
|
cmp $blocks,#1
|
|
b.ne 1f
|
|
// fast processing for one single block without
|
|
// context saving overhead
|
|
___
|
|
&encrypt_1blk($ivec);
|
|
$code.=<<___;
|
|
ld1 {@data[0].4s},[$inp]
|
|
eor @data[0].16b,@data[0].16b,$ivec.16b
|
|
st1 {@data[0].4s},[$outp]
|
|
ret
|
|
1:
|
|
AARCH64_SIGN_LINK_REGISTER
|
|
stp d8,d9,[sp,#-80]!
|
|
stp d10,d11,[sp,#16]
|
|
stp d12,d13,[sp,#32]
|
|
stp d14,d15,[sp,#48]
|
|
stp x29,x30,[sp,#64]
|
|
mov $word0,$ivec.s[0]
|
|
mov $word1,$ivec.s[1]
|
|
mov $word2,$ivec.s[2]
|
|
mov $ctr,$ivec.s[3]
|
|
.Lctr32_4_blocks_process:
|
|
cmp $blocks,#4
|
|
b.lt 1f
|
|
dup @data[0].4s,$word0
|
|
dup @data[1].4s,$word1
|
|
dup @data[2].4s,$word2
|
|
mov @data[3].s[0],$ctr
|
|
add $ctr,$ctr,#1
|
|
mov $data[3].s[1],$ctr
|
|
add $ctr,$ctr,#1
|
|
mov @data[3].s[2],$ctr
|
|
add $ctr,$ctr,#1
|
|
mov @data[3].s[3],$ctr
|
|
add $ctr,$ctr,#1
|
|
cmp $blocks,#8
|
|
b.ge .Lctr32_8_blocks_process
|
|
bl _${prefix}_enc_4blks
|
|
ld4 {@vtmpx[0].4s,@vtmpx[1].4s,@vtmpx[2].4s,@vtmpx[3].4s},[$inp],#64
|
|
eor @vtmp[0].16b,@vtmp[0].16b,@vtmpx[0].16b
|
|
eor @vtmp[1].16b,@vtmp[1].16b,@vtmpx[1].16b
|
|
eor @vtmp[2].16b,@vtmp[2].16b,@vtmpx[2].16b
|
|
eor @vtmp[3].16b,@vtmp[3].16b,@vtmpx[3].16b
|
|
st4 {@vtmp[0].4s,@vtmp[1].4s,@vtmp[2].4s,@vtmp[3].4s},[$outp],#64
|
|
subs $blocks,$blocks,#4
|
|
b.ne .Lctr32_4_blocks_process
|
|
b 100f
|
|
.Lctr32_8_blocks_process:
|
|
dup @datax[0].4s,$word0
|
|
dup @datax[1].4s,$word1
|
|
dup @datax[2].4s,$word2
|
|
mov @datax[3].s[0],$ctr
|
|
add $ctr,$ctr,#1
|
|
mov $datax[3].s[1],$ctr
|
|
add $ctr,$ctr,#1
|
|
mov @datax[3].s[2],$ctr
|
|
add $ctr,$ctr,#1
|
|
mov @datax[3].s[3],$ctr
|
|
add $ctr,$ctr,#1
|
|
bl _${prefix}_enc_8blks
|
|
ld4 {@vtmpx[0].4s,@vtmpx[1].4s,@vtmpx[2].4s,@vtmpx[3].4s},[$inp],#64
|
|
ld4 {@datax[0].4s,@datax[1].4s,@datax[2].4s,@datax[3].4s},[$inp],#64
|
|
eor @vtmp[0].16b,@vtmp[0].16b,@vtmpx[0].16b
|
|
eor @vtmp[1].16b,@vtmp[1].16b,@vtmpx[1].16b
|
|
eor @vtmp[2].16b,@vtmp[2].16b,@vtmpx[2].16b
|
|
eor @vtmp[3].16b,@vtmp[3].16b,@vtmpx[3].16b
|
|
eor @data[0].16b,@data[0].16b,@datax[0].16b
|
|
eor @data[1].16b,@data[1].16b,@datax[1].16b
|
|
eor @data[2].16b,@data[2].16b,@datax[2].16b
|
|
eor @data[3].16b,@data[3].16b,@datax[3].16b
|
|
st4 {@vtmp[0].4s,@vtmp[1].4s,@vtmp[2].4s,@vtmp[3].4s},[$outp],#64
|
|
st4 {@data[0].4s,@data[1].4s,@data[2].4s,@data[3].4s},[$outp],#64
|
|
subs $blocks,$blocks,#8
|
|
b.ne .Lctr32_4_blocks_process
|
|
b 100f
|
|
1: // last block processing
|
|
subs $blocks,$blocks,#1
|
|
b.lt 100f
|
|
b.gt 1f
|
|
mov $ivec.s[0],$word0
|
|
mov $ivec.s[1],$word1
|
|
mov $ivec.s[2],$word2
|
|
mov $ivec.s[3],$ctr
|
|
___
|
|
&encrypt_1blk($ivec);
|
|
$code.=<<___;
|
|
ld1 {@data[0].4s},[$inp]
|
|
eor @data[0].16b,@data[0].16b,$ivec.16b
|
|
st1 {@data[0].4s},[$outp]
|
|
b 100f
|
|
1: // last 2 blocks processing
|
|
dup @data[0].4s,$word0
|
|
dup @data[1].4s,$word1
|
|
dup @data[2].4s,$word2
|
|
mov @data[3].s[0],$ctr
|
|
add $ctr,$ctr,#1
|
|
mov @data[3].s[1],$ctr
|
|
subs $blocks,$blocks,#1
|
|
b.ne 1f
|
|
bl _${prefix}_enc_4blks
|
|
ld4 {@vtmpx[0].s,@vtmpx[1].s,@vtmpx[2].s,@vtmpx[3].s}[0],[$inp],#16
|
|
ld4 {@vtmpx[0].s,@vtmpx[1].s,@vtmpx[2].s,@vtmpx[3].s}[1],[$inp],#16
|
|
eor @vtmp[0].16b,@vtmp[0].16b,@vtmpx[0].16b
|
|
eor @vtmp[1].16b,@vtmp[1].16b,@vtmpx[1].16b
|
|
eor @vtmp[2].16b,@vtmp[2].16b,@vtmpx[2].16b
|
|
eor @vtmp[3].16b,@vtmp[3].16b,@vtmpx[3].16b
|
|
st4 {@vtmp[0].s,@vtmp[1].s,@vtmp[2].s,@vtmp[3].s}[0],[$outp],#16
|
|
st4 {@vtmp[0].s,@vtmp[1].s,@vtmp[2].s,@vtmp[3].s}[1],[$outp],#16
|
|
b 100f
|
|
1: // last 3 blocks processing
|
|
add $ctr,$ctr,#1
|
|
mov @data[3].s[2],$ctr
|
|
bl _${prefix}_enc_4blks
|
|
ld4 {@vtmpx[0].s,@vtmpx[1].s,@vtmpx[2].s,@vtmpx[3].s}[0],[$inp],#16
|
|
ld4 {@vtmpx[0].s,@vtmpx[1].s,@vtmpx[2].s,@vtmpx[3].s}[1],[$inp],#16
|
|
ld4 {@vtmpx[0].s,@vtmpx[1].s,@vtmpx[2].s,@vtmpx[3].s}[2],[$inp],#16
|
|
eor @vtmp[0].16b,@vtmp[0].16b,@vtmpx[0].16b
|
|
eor @vtmp[1].16b,@vtmp[1].16b,@vtmpx[1].16b
|
|
eor @vtmp[2].16b,@vtmp[2].16b,@vtmpx[2].16b
|
|
eor @vtmp[3].16b,@vtmp[3].16b,@vtmpx[3].16b
|
|
st4 {@vtmp[0].s,@vtmp[1].s,@vtmp[2].s,@vtmp[3].s}[0],[$outp],#16
|
|
st4 {@vtmp[0].s,@vtmp[1].s,@vtmp[2].s,@vtmp[3].s}[1],[$outp],#16
|
|
st4 {@vtmp[0].s,@vtmp[1].s,@vtmp[2].s,@vtmp[3].s}[2],[$outp],#16
|
|
100:
|
|
ldp d10,d11,[sp,#16]
|
|
ldp d12,d13,[sp,#32]
|
|
ldp d14,d15,[sp,#48]
|
|
ldp x29,x30,[sp,#64]
|
|
ldp d8,d9,[sp],#80
|
|
AARCH64_VALIDATE_LINK_REGISTER
|
|
ret
|
|
.size ${prefix}_ctr32_encrypt_blocks,.-${prefix}_ctr32_encrypt_blocks
|
|
___
|
|
}}}
|
|
|
|
|
|
{{{
|
|
my ($blocks,$len)=("x2","x2");
|
|
my $ivp=("x5");
|
|
my @twx=map("x$_",(12..27));
|
|
my ($rks1,$rks2)=("x26","x27");
|
|
my $lastBlk=("x26");
|
|
my $enc=("w28");
|
|
my $remain=("x29");
|
|
|
|
my @tweak=map("v$_",(16..23));
|
|
my $lastTweak=("v25");
|
|
|
|
sub gen_xts_cipher() {
|
|
my $std = shift;
|
|
$code.=<<___;
|
|
.globl ${prefix}_xts_encrypt${std}
|
|
.type ${prefix}_xts_encrypt${std},%function
|
|
.align 5
|
|
${prefix}_xts_encrypt${std}:
|
|
AARCH64_SIGN_LINK_REGISTER
|
|
stp x15, x16, [sp, #-0x10]!
|
|
stp x17, x18, [sp, #-0x10]!
|
|
stp x19, x20, [sp, #-0x10]!
|
|
stp x21, x22, [sp, #-0x10]!
|
|
stp x23, x24, [sp, #-0x10]!
|
|
stp x25, x26, [sp, #-0x10]!
|
|
stp x27, x28, [sp, #-0x10]!
|
|
stp x29, x30, [sp, #-0x10]!
|
|
stp d8, d9, [sp, #-0x10]!
|
|
stp d10, d11, [sp, #-0x10]!
|
|
stp d12, d13, [sp, #-0x10]!
|
|
stp d14, d15, [sp, #-0x10]!
|
|
mov $rks1,x3
|
|
mov $rks2,x4
|
|
mov $enc,w6
|
|
ld1 {@tweak[0].4s}, [$ivp]
|
|
mov $rks,$rks2
|
|
___
|
|
&load_sbox();
|
|
&rev32(@tweak[0],@tweak[0]);
|
|
&encrypt_1blk(@tweak[0]);
|
|
$code.=<<___;
|
|
mov $rks,$rks1
|
|
and $remain,$len,#0x0F
|
|
// convert length into blocks
|
|
lsr $blocks,$len,4
|
|
cmp $blocks,#1
|
|
b.lt .return${std}
|
|
|
|
cmp $remain,0
|
|
// If the encryption/decryption Length is N times of 16,
|
|
// the all blocks are encrypted/decrypted in .xts_encrypt_blocks${std}
|
|
b.eq .xts_encrypt_blocks${std}
|
|
|
|
// If the encryption/decryption length is not N times of 16,
|
|
// the last two blocks are encrypted/decrypted in .last_2blks_tweak${std} or .only_2blks_tweak${std}
|
|
// the other blocks are encrypted/decrypted in .xts_encrypt_blocks${std}
|
|
subs $blocks,$blocks,#1
|
|
b.eq .only_2blks_tweak${std}
|
|
.xts_encrypt_blocks${std}:
|
|
___
|
|
&rbit(@tweak[0],@tweak[0],$std);
|
|
&rev32_armeb(@tweak[0],@tweak[0]);
|
|
&mov_vec_to_reg(@tweak[0],@twx[0],@twx[1]);
|
|
&compute_tweak(@twx[0],@twx[1],@twx[2],@twx[3]);
|
|
&compute_tweak(@twx[2],@twx[3],@twx[4],@twx[5]);
|
|
&compute_tweak(@twx[4],@twx[5],@twx[6],@twx[7]);
|
|
&compute_tweak(@twx[6],@twx[7],@twx[8],@twx[9]);
|
|
&compute_tweak(@twx[8],@twx[9],@twx[10],@twx[11]);
|
|
&compute_tweak(@twx[10],@twx[11],@twx[12],@twx[13]);
|
|
&compute_tweak(@twx[12],@twx[13],@twx[14],@twx[15]);
|
|
$code.=<<___;
|
|
.Lxts_8_blocks_process${std}:
|
|
cmp $blocks,#8
|
|
___
|
|
&mov_reg_to_vec(@twx[0],@twx[1],@tweak[0]);
|
|
&compute_tweak(@twx[14],@twx[15],@twx[0],@twx[1]);
|
|
&mov_reg_to_vec(@twx[2],@twx[3],@tweak[1]);
|
|
&compute_tweak(@twx[0],@twx[1],@twx[2],@twx[3]);
|
|
&mov_reg_to_vec(@twx[4],@twx[5],@tweak[2]);
|
|
&compute_tweak(@twx[2],@twx[3],@twx[4],@twx[5]);
|
|
&mov_reg_to_vec(@twx[6],@twx[7],@tweak[3]);
|
|
&compute_tweak(@twx[4],@twx[5],@twx[6],@twx[7]);
|
|
&mov_reg_to_vec(@twx[8],@twx[9],@tweak[4]);
|
|
&compute_tweak(@twx[6],@twx[7],@twx[8],@twx[9]);
|
|
&mov_reg_to_vec(@twx[10],@twx[11],@tweak[5]);
|
|
&compute_tweak(@twx[8],@twx[9],@twx[10],@twx[11]);
|
|
&mov_reg_to_vec(@twx[12],@twx[13],@tweak[6]);
|
|
&compute_tweak(@twx[10],@twx[11],@twx[12],@twx[13]);
|
|
&mov_reg_to_vec(@twx[14],@twx[15],@tweak[7]);
|
|
&compute_tweak(@twx[12],@twx[13],@twx[14],@twx[15]);
|
|
$code.=<<___;
|
|
b.lt .Lxts_4_blocks_process${std}
|
|
ld1 {@data[0].4s,@data[1].4s,@data[2].4s,@data[3].4s},[$inp],#64
|
|
___
|
|
&rbit(@tweak[0],@tweak[0],$std);
|
|
&rbit(@tweak[1],@tweak[1],$std);
|
|
&rbit(@tweak[2],@tweak[2],$std);
|
|
&rbit(@tweak[3],@tweak[3],$std);
|
|
$code.=<<___;
|
|
eor @data[0].16b, @data[0].16b, @tweak[0].16b
|
|
eor @data[1].16b, @data[1].16b, @tweak[1].16b
|
|
eor @data[2].16b, @data[2].16b, @tweak[2].16b
|
|
eor @data[3].16b, @data[3].16b, @tweak[3].16b
|
|
ld1 {@datax[0].4s,$datax[1].4s,@datax[2].4s,@datax[3].4s},[$inp],#64
|
|
___
|
|
&rbit(@tweak[4],@tweak[4],$std);
|
|
&rbit(@tweak[5],@tweak[5],$std);
|
|
&rbit(@tweak[6],@tweak[6],$std);
|
|
&rbit(@tweak[7],@tweak[7],$std);
|
|
$code.=<<___;
|
|
eor @datax[0].16b, @datax[0].16b, @tweak[4].16b
|
|
eor @datax[1].16b, @datax[1].16b, @tweak[5].16b
|
|
eor @datax[2].16b, @datax[2].16b, @tweak[6].16b
|
|
eor @datax[3].16b, @datax[3].16b, @tweak[7].16b
|
|
___
|
|
&rev32(@data[0],@data[0]);
|
|
&rev32(@data[1],@data[1]);
|
|
&rev32(@data[2],@data[2]);
|
|
&rev32(@data[3],@data[3]);
|
|
&rev32(@datax[0],@datax[0]);
|
|
&rev32(@datax[1],@datax[1]);
|
|
&rev32(@datax[2],@datax[2]);
|
|
&rev32(@datax[3],@datax[3]);
|
|
&transpose(@data,@vtmp);
|
|
&transpose(@datax,@vtmp);
|
|
$code.=<<___;
|
|
bl _${prefix}_enc_8blks
|
|
___
|
|
&transpose(@vtmp,@datax);
|
|
&transpose(@data,@datax);
|
|
$code.=<<___;
|
|
eor @vtmp[0].16b, @vtmp[0].16b, @tweak[0].16b
|
|
eor @vtmp[1].16b, @vtmp[1].16b, @tweak[1].16b
|
|
eor @vtmp[2].16b, @vtmp[2].16b, @tweak[2].16b
|
|
eor @vtmp[3].16b, @vtmp[3].16b, @tweak[3].16b
|
|
eor @data[0].16b, @data[0].16b, @tweak[4].16b
|
|
eor @data[1].16b, @data[1].16b, @tweak[5].16b
|
|
eor @data[2].16b, @data[2].16b, @tweak[6].16b
|
|
eor @data[3].16b, @data[3].16b, @tweak[7].16b
|
|
|
|
// save the last tweak
|
|
mov $lastTweak.16b,@tweak[7].16b
|
|
st1 {@vtmp[0].4s,@vtmp[1].4s,@vtmp[2].4s,@vtmp[3].4s},[$outp],#64
|
|
st1 {@data[0].4s,@data[1].4s,@data[2].4s,@data[3].4s},[$outp],#64
|
|
subs $blocks,$blocks,#8
|
|
b.gt .Lxts_8_blocks_process${std}
|
|
b 100f
|
|
.Lxts_4_blocks_process${std}:
|
|
cmp $blocks,#4
|
|
b.lt 1f
|
|
ld1 {@data[0].4s,@data[1].4s,@data[2].4s,@data[3].4s},[$inp],#64
|
|
___
|
|
&rbit(@tweak[0],@tweak[0],$std);
|
|
&rbit(@tweak[1],@tweak[1],$std);
|
|
&rbit(@tweak[2],@tweak[2],$std);
|
|
&rbit(@tweak[3],@tweak[3],$std);
|
|
$code.=<<___;
|
|
eor @data[0].16b, @data[0].16b, @tweak[0].16b
|
|
eor @data[1].16b, @data[1].16b, @tweak[1].16b
|
|
eor @data[2].16b, @data[2].16b, @tweak[2].16b
|
|
eor @data[3].16b, @data[3].16b, @tweak[3].16b
|
|
___
|
|
&rev32(@data[0],@data[0]);
|
|
&rev32(@data[1],@data[1]);
|
|
&rev32(@data[2],@data[2]);
|
|
&rev32(@data[3],@data[3]);
|
|
&transpose(@data,@vtmp);
|
|
$code.=<<___;
|
|
bl _${prefix}_enc_4blks
|
|
___
|
|
&transpose(@vtmp,@data);
|
|
$code.=<<___;
|
|
eor @vtmp[0].16b, @vtmp[0].16b, @tweak[0].16b
|
|
eor @vtmp[1].16b, @vtmp[1].16b, @tweak[1].16b
|
|
eor @vtmp[2].16b, @vtmp[2].16b, @tweak[2].16b
|
|
eor @vtmp[3].16b, @vtmp[3].16b, @tweak[3].16b
|
|
st1 {@vtmp[0].4s,@vtmp[1].4s,@vtmp[2].4s,@vtmp[3].4s},[$outp],#64
|
|
sub $blocks,$blocks,#4
|
|
mov @tweak[0].16b,@tweak[4].16b
|
|
mov @tweak[1].16b,@tweak[5].16b
|
|
mov @tweak[2].16b,@tweak[6].16b
|
|
// save the last tweak
|
|
mov $lastTweak.16b,@tweak[3].16b
|
|
1:
|
|
// process last block
|
|
cmp $blocks,#1
|
|
b.lt 100f
|
|
b.gt 1f
|
|
ld1 {@data[0].4s},[$inp],#16
|
|
___
|
|
&rbit(@tweak[0],@tweak[0],$std);
|
|
$code.=<<___;
|
|
eor @data[0].16b, @data[0].16b, @tweak[0].16b
|
|
___
|
|
&rev32(@data[0],@data[0]);
|
|
&encrypt_1blk(@data[0]);
|
|
$code.=<<___;
|
|
eor @data[0].16b, @data[0].16b, @tweak[0].16b
|
|
st1 {@data[0].4s},[$outp],#16
|
|
// save the last tweak
|
|
mov $lastTweak.16b,@tweak[0].16b
|
|
b 100f
|
|
1: // process last 2 blocks
|
|
cmp $blocks,#2
|
|
b.gt 1f
|
|
ld1 {@data[0].4s,@data[1].4s},[$inp],#32
|
|
___
|
|
&rbit(@tweak[0],@tweak[0],$std);
|
|
&rbit(@tweak[1],@tweak[1],$std);
|
|
$code.=<<___;
|
|
eor @data[0].16b, @data[0].16b, @tweak[0].16b
|
|
eor @data[1].16b, @data[1].16b, @tweak[1].16b
|
|
___
|
|
&rev32(@data[0],@data[0]);
|
|
&rev32(@data[1],@data[1]);
|
|
&transpose(@data,@vtmp);
|
|
$code.=<<___;
|
|
bl _${prefix}_enc_4blks
|
|
___
|
|
&transpose(@vtmp,@data);
|
|
$code.=<<___;
|
|
eor @vtmp[0].16b, @vtmp[0].16b, @tweak[0].16b
|
|
eor @vtmp[1].16b, @vtmp[1].16b, @tweak[1].16b
|
|
st1 {@vtmp[0].4s,@vtmp[1].4s},[$outp],#32
|
|
// save the last tweak
|
|
mov $lastTweak.16b,@tweak[1].16b
|
|
b 100f
|
|
1: // process last 3 blocks
|
|
ld1 {@data[0].4s,@data[1].4s,@data[2].4s},[$inp],#48
|
|
___
|
|
&rbit(@tweak[0],@tweak[0],$std);
|
|
&rbit(@tweak[1],@tweak[1],$std);
|
|
&rbit(@tweak[2],@tweak[2],$std);
|
|
$code.=<<___;
|
|
eor @data[0].16b, @data[0].16b, @tweak[0].16b
|
|
eor @data[1].16b, @data[1].16b, @tweak[1].16b
|
|
eor @data[2].16b, @data[2].16b, @tweak[2].16b
|
|
___
|
|
&rev32(@data[0],@data[0]);
|
|
&rev32(@data[1],@data[1]);
|
|
&rev32(@data[2],@data[2]);
|
|
&transpose(@data,@vtmp);
|
|
$code.=<<___;
|
|
bl _${prefix}_enc_4blks
|
|
___
|
|
&transpose(@vtmp,@data);
|
|
$code.=<<___;
|
|
eor @vtmp[0].16b, @vtmp[0].16b, @tweak[0].16b
|
|
eor @vtmp[1].16b, @vtmp[1].16b, @tweak[1].16b
|
|
eor @vtmp[2].16b, @vtmp[2].16b, @tweak[2].16b
|
|
st1 {@vtmp[0].4s,@vtmp[1].4s,@vtmp[2].4s},[$outp],#48
|
|
// save the last tweak
|
|
mov $lastTweak.16b,@tweak[2].16b
|
|
100:
|
|
cmp $remain,0
|
|
b.eq .return${std}
|
|
|
|
// This branch calculates the last two tweaks,
|
|
// while the encryption/decryption length is larger than 32
|
|
.last_2blks_tweak${std}:
|
|
___
|
|
&rev32_armeb($lastTweak,$lastTweak);
|
|
&compute_tweak_vec($lastTweak,@tweak[1],$std);
|
|
&compute_tweak_vec(@tweak[1],@tweak[2],$std);
|
|
$code.=<<___;
|
|
b .check_dec${std}
|
|
|
|
|
|
// This branch calculates the last two tweaks,
|
|
// while the encryption/decryption length is equal to 32, who only need two tweaks
|
|
.only_2blks_tweak${std}:
|
|
mov @tweak[1].16b,@tweak[0].16b
|
|
___
|
|
&rev32_armeb(@tweak[1],@tweak[1]);
|
|
&compute_tweak_vec(@tweak[1],@tweak[2],$std);
|
|
$code.=<<___;
|
|
b .check_dec${std}
|
|
|
|
|
|
// Determine whether encryption or decryption is required.
|
|
// The last two tweaks need to be swapped for decryption.
|
|
.check_dec${std}:
|
|
// encryption:1 decryption:0
|
|
cmp $enc,1
|
|
b.eq .process_last_2blks${std}
|
|
mov @vtmp[0].16B,@tweak[1].16b
|
|
mov @tweak[1].16B,@tweak[2].16b
|
|
mov @tweak[2].16B,@vtmp[0].16b
|
|
|
|
.process_last_2blks${std}:
|
|
___
|
|
&rev32_armeb(@tweak[1],@tweak[1]);
|
|
&rev32_armeb(@tweak[2],@tweak[2]);
|
|
$code.=<<___;
|
|
ld1 {@data[0].4s},[$inp],#16
|
|
eor @data[0].16b, @data[0].16b, @tweak[1].16b
|
|
___
|
|
&rev32(@data[0],@data[0]);
|
|
&encrypt_1blk(@data[0]);
|
|
$code.=<<___;
|
|
eor @data[0].16b, @data[0].16b, @tweak[1].16b
|
|
st1 {@data[0].4s},[$outp],#16
|
|
|
|
sub $lastBlk,$outp,16
|
|
.loop${std}:
|
|
subs $remain,$remain,1
|
|
ldrb $wtmp0,[$lastBlk,$remain]
|
|
ldrb $wtmp1,[$inp,$remain]
|
|
strb $wtmp1,[$lastBlk,$remain]
|
|
strb $wtmp0,[$outp,$remain]
|
|
b.gt .loop${std}
|
|
ld1 {@data[0].4s}, [$lastBlk]
|
|
eor @data[0].16b, @data[0].16b, @tweak[2].16b
|
|
___
|
|
&rev32(@data[0],@data[0]);
|
|
&encrypt_1blk(@data[0]);
|
|
$code.=<<___;
|
|
eor @data[0].16b, @data[0].16b, @tweak[2].16b
|
|
st1 {@data[0].4s}, [$lastBlk]
|
|
.return${std}:
|
|
ldp d14, d15, [sp], #0x10
|
|
ldp d12, d13, [sp], #0x10
|
|
ldp d10, d11, [sp], #0x10
|
|
ldp d8, d9, [sp], #0x10
|
|
ldp x29, x30, [sp], #0x10
|
|
ldp x27, x28, [sp], #0x10
|
|
ldp x25, x26, [sp], #0x10
|
|
ldp x23, x24, [sp], #0x10
|
|
ldp x21, x22, [sp], #0x10
|
|
ldp x19, x20, [sp], #0x10
|
|
ldp x17, x18, [sp], #0x10
|
|
ldp x15, x16, [sp], #0x10
|
|
AARCH64_VALIDATE_LINK_REGISTER
|
|
ret
|
|
.size ${prefix}_xts_encrypt${std},.-${prefix}_xts_encrypt${std}
|
|
___
|
|
} # end of gen_xts_cipher
|
|
&gen_xts_cipher("_gb");
|
|
&gen_xts_cipher("");
|
|
}}}
|
|
|
|
########################################
|
|
open SELF,$0;
|
|
while(<SELF>) {
|
|
next if (/^#!/);
|
|
last if (!s/^#/\/\// and !/^$/);
|
|
print;
|
|
}
|
|
close SELF;
|
|
|
|
foreach(split("\n",$code)) {
|
|
s/\`([^\`]*)\`/eval($1)/ge;
|
|
print $_,"\n";
|
|
}
|
|
|
|
close STDOUT or die "error closing STDOUT: $!";
|