| #! /usr/bin/env perl | |
| # Copyright 2012-2016 The OpenSSL Project Authors. All Rights Reserved. | |
| # | |
| # Licensed under the Apache License, Version 2.0 (the "License"); | |
| # you may not use this file except in compliance with the License. | |
| # You may obtain a copy of the License at | |
| # | |
| # https://www.apache.org/licenses/LICENSE-2.0 | |
| # | |
| # Unless required by applicable law or agreed to in writing, software | |
| # distributed under the License is distributed on an "AS IS" BASIS, | |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| # See the License for the specific language governing permissions and | |
| # limitations under the License. | |
| # ==================================================================== | |
| # Written by Andy Polyakov <appro@openssl.org> for the OpenSSL | |
| # project. | |
| # | |
| # Specific modes and adaptation for Linux kernel by Ard Biesheuvel | |
| # of Linaro. | |
| # ==================================================================== | |
| # Bit-sliced AES for ARM NEON | |
| # | |
| # February 2012. | |
| # | |
| # This implementation is direct adaptation of bsaes-x86_64 module for | |
| # ARM NEON. Except that this module is endian-neutral [in sense that | |
| # it can be compiled for either endianness] by courtesy of vld1.8's | |
| # neutrality. Initial version doesn't implement interface to OpenSSL, | |
| # only low-level primitives and unsupported entry points, just enough | |
| # to collect performance results, which for Cortex-A8 core are: | |
| # | |
| # encrypt 19.5 cycles per byte processed with 128-bit key | |
| # decrypt 22.1 cycles per byte processed with 128-bit key | |
| # key conv. 440 cycles per 128-bit key/0.18 of 8x block | |
| # | |
| # Snapdragon S4 encrypts byte in 17.6 cycles and decrypts in 19.7, | |
| # which is [much] worse than anticipated (for further details see | |
| # http://www.openssl.org/~appro/Snapdragon-S4.html). | |
| # | |
| # Cortex-A15 manages in 14.2/16.1 cycles [when integer-only code | |
| # manages in 20.0 cycles]. | |
| # | |
| # When comparing to x86_64 results keep in mind that NEON unit is | |
| # [mostly] single-issue and thus can't [fully] benefit from | |
| # instruction-level parallelism. And when comparing to aes-armv4 | |
| # results keep in mind key schedule conversion overhead (see | |
| # bsaes-x86_64.pl for further details)... | |
| # | |
| # <appro@openssl.org> | |
| # April-August 2013 | |
| # Add CBC, CTR and XTS subroutines and adapt for kernel use; courtesy of Ard. | |
| $flavour = shift; | |
| if ($flavour=~/\w[\w\-]*\.\w+$/) { $output=$flavour; undef $flavour; } | |
| else { while (($output=shift) && ($output!~/\w[\w\-]*\.\w+$/)) {} } | |
| if ($flavour && $flavour ne "void") { | |
| $0 =~ m/(.*[\/\\])[^\/\\]+$/; $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, $output; | |
| *STDOUT=*OUT; | |
| } else { | |
| open OUT,">$output"; | |
| *STDOUT=*OUT; | |
| } | |
| my ($inp,$out,$len,$key)=("r0","r1","r2","r3"); | |
| my @XMM=map("q$_",(0..15)); | |
| { | |
| my ($key,$rounds,$const)=("r4","r5","r6"); | |
| sub Dlo() { shift=~m|q([1]?[0-9])|?"d".($1*2):""; } | |
| sub Dhi() { shift=~m|q([1]?[0-9])|?"d".($1*2+1):""; } | |
| sub Sbox { | |
| # input in lsb > [b0, b1, b2, b3, b4, b5, b6, b7] < msb | |
| # output in lsb > [b0, b1, b4, b6, b3, b7, b2, b5] < msb | |
| my @b=@_[0..7]; | |
| my @t=@_[8..11]; | |
| my @s=@_[12..15]; | |
| &InBasisChange (@b); | |
| &Inv_GF256 (@b[6,5,0,3,7,1,4,2],@t,@s); | |
| &OutBasisChange (@b[7,1,4,2,6,5,0,3]); | |
| } | |
| sub InBasisChange { | |
| # input in lsb > [b0, b1, b2, b3, b4, b5, b6, b7] < msb | |
| # output in lsb > [b6, b5, b0, b3, b7, b1, b4, b2] < msb | |
| my @b=@_[0..7]; | |
| $code.=<<___; | |
| veor @b[2], @b[2], @b[1] | |
| veor @b[5], @b[5], @b[6] | |
| veor @b[3], @b[3], @b[0] | |
| veor @b[6], @b[6], @b[2] | |
| veor @b[5], @b[5], @b[0] | |
| veor @b[6], @b[6], @b[3] | |
| veor @b[3], @b[3], @b[7] | |
| veor @b[7], @b[7], @b[5] | |
| veor @b[3], @b[3], @b[4] | |
| veor @b[4], @b[4], @b[5] | |
| veor @b[2], @b[2], @b[7] | |
| veor @b[3], @b[3], @b[1] | |
| veor @b[1], @b[1], @b[5] | |
| ___ | |
| } | |
| sub OutBasisChange { | |
| # input in lsb > [b0, b1, b2, b3, b4, b5, b6, b7] < msb | |
| # output in lsb > [b6, b1, b2, b4, b7, b0, b3, b5] < msb | |
| my @b=@_[0..7]; | |
| $code.=<<___; | |
| veor @b[0], @b[0], @b[6] | |
| veor @b[1], @b[1], @b[4] | |
| veor @b[4], @b[4], @b[6] | |
| veor @b[2], @b[2], @b[0] | |
| veor @b[6], @b[6], @b[1] | |
| veor @b[1], @b[1], @b[5] | |
| veor @b[5], @b[5], @b[3] | |
| veor @b[3], @b[3], @b[7] | |
| veor @b[7], @b[7], @b[5] | |
| veor @b[2], @b[2], @b[5] | |
| veor @b[4], @b[4], @b[7] | |
| ___ | |
| } | |
| sub InvSbox { | |
| # input in lsb > [b0, b1, b2, b3, b4, b5, b6, b7] < msb | |
| # output in lsb > [b0, b1, b6, b4, b2, b7, b3, b5] < msb | |
| my @b=@_[0..7]; | |
| my @t=@_[8..11]; | |
| my @s=@_[12..15]; | |
| &InvInBasisChange (@b); | |
| &Inv_GF256 (@b[5,1,2,6,3,7,0,4],@t,@s); | |
| &InvOutBasisChange (@b[3,7,0,4,5,1,2,6]); | |
| } | |
| sub InvInBasisChange { # OutBasisChange in reverse (with twist) | |
| my @b=@_[5,1,2,6,3,7,0,4]; | |
| $code.=<<___ | |
| veor @b[1], @b[1], @b[7] | |
| veor @b[4], @b[4], @b[7] | |
| veor @b[7], @b[7], @b[5] | |
| veor @b[1], @b[1], @b[3] | |
| veor @b[2], @b[2], @b[5] | |
| veor @b[3], @b[3], @b[7] | |
| veor @b[6], @b[6], @b[1] | |
| veor @b[2], @b[2], @b[0] | |
| veor @b[5], @b[5], @b[3] | |
| veor @b[4], @b[4], @b[6] | |
| veor @b[0], @b[0], @b[6] | |
| veor @b[1], @b[1], @b[4] | |
| ___ | |
| } | |
| sub InvOutBasisChange { # InBasisChange in reverse | |
| my @b=@_[2,5,7,3,6,1,0,4]; | |
| $code.=<<___; | |
| veor @b[1], @b[1], @b[5] | |
| veor @b[2], @b[2], @b[7] | |
| veor @b[3], @b[3], @b[1] | |
| veor @b[4], @b[4], @b[5] | |
| veor @b[7], @b[7], @b[5] | |
| veor @b[3], @b[3], @b[4] | |
| veor @b[5], @b[5], @b[0] | |
| veor @b[3], @b[3], @b[7] | |
| veor @b[6], @b[6], @b[2] | |
| veor @b[2], @b[2], @b[1] | |
| veor @b[6], @b[6], @b[3] | |
| veor @b[3], @b[3], @b[0] | |
| veor @b[5], @b[5], @b[6] | |
| ___ | |
| } | |
| sub Mul_GF4 { | |
| #;************************************************************* | |
| #;* Mul_GF4: Input x0-x1,y0-y1 Output x0-x1 Temp t0 (8) * | |
| #;************************************************************* | |
| my ($x0,$x1,$y0,$y1,$t0,$t1)=@_; | |
| $code.=<<___; | |
| veor $t0, $y0, $y1 | |
| vand $t0, $t0, $x0 | |
| veor $x0, $x0, $x1 | |
| vand $t1, $x1, $y0 | |
| vand $x0, $x0, $y1 | |
| veor $x1, $t1, $t0 | |
| veor $x0, $x0, $t1 | |
| ___ | |
| } | |
| sub Mul_GF4_N { # not used, see next subroutine | |
| # multiply and scale by N | |
| my ($x0,$x1,$y0,$y1,$t0)=@_; | |
| $code.=<<___; | |
| veor $t0, $y0, $y1 | |
| vand $t0, $t0, $x0 | |
| veor $x0, $x0, $x1 | |
| vand $x1, $x1, $y0 | |
| vand $x0, $x0, $y1 | |
| veor $x1, $x1, $x0 | |
| veor $x0, $x0, $t0 | |
| ___ | |
| } | |
| sub Mul_GF4_N_GF4 { | |
| # interleaved Mul_GF4_N and Mul_GF4 | |
| my ($x0,$x1,$y0,$y1,$t0, | |
| $x2,$x3,$y2,$y3,$t1)=@_; | |
| $code.=<<___; | |
| veor $t0, $y0, $y1 | |
| veor $t1, $y2, $y3 | |
| vand $t0, $t0, $x0 | |
| vand $t1, $t1, $x2 | |
| veor $x0, $x0, $x1 | |
| veor $x2, $x2, $x3 | |
| vand $x1, $x1, $y0 | |
| vand $x3, $x3, $y2 | |
| vand $x0, $x0, $y1 | |
| vand $x2, $x2, $y3 | |
| veor $x1, $x1, $x0 | |
| veor $x2, $x2, $x3 | |
| veor $x0, $x0, $t0 | |
| veor $x3, $x3, $t1 | |
| ___ | |
| } | |
| sub Mul_GF16_2 { | |
| my @x=@_[0..7]; | |
| my @y=@_[8..11]; | |
| my @t=@_[12..15]; | |
| $code.=<<___; | |
| veor @t[0], @x[0], @x[2] | |
| veor @t[1], @x[1], @x[3] | |
| ___ | |
| &Mul_GF4 (@x[0], @x[1], @y[0], @y[1], @t[2..3]); | |
| $code.=<<___; | |
| veor @y[0], @y[0], @y[2] | |
| veor @y[1], @y[1], @y[3] | |
| ___ | |
| Mul_GF4_N_GF4 (@t[0], @t[1], @y[0], @y[1], @t[3], | |
| @x[2], @x[3], @y[2], @y[3], @t[2]); | |
| $code.=<<___; | |
| veor @x[0], @x[0], @t[0] | |
| veor @x[2], @x[2], @t[0] | |
| veor @x[1], @x[1], @t[1] | |
| veor @x[3], @x[3], @t[1] | |
| veor @t[0], @x[4], @x[6] | |
| veor @t[1], @x[5], @x[7] | |
| ___ | |
| &Mul_GF4_N_GF4 (@t[0], @t[1], @y[0], @y[1], @t[3], | |
| @x[6], @x[7], @y[2], @y[3], @t[2]); | |
| $code.=<<___; | |
| veor @y[0], @y[0], @y[2] | |
| veor @y[1], @y[1], @y[3] | |
| ___ | |
| &Mul_GF4 (@x[4], @x[5], @y[0], @y[1], @t[2..3]); | |
| $code.=<<___; | |
| veor @x[4], @x[4], @t[0] | |
| veor @x[6], @x[6], @t[0] | |
| veor @x[5], @x[5], @t[1] | |
| veor @x[7], @x[7], @t[1] | |
| ___ | |
| } | |
| sub Inv_GF256 { | |
| #;******************************************************************** | |
| #;* Inv_GF256: Input x0-x7 Output x0-x7 Temp t0-t3,s0-s3 (144) * | |
| #;******************************************************************** | |
| my @x=@_[0..7]; | |
| my @t=@_[8..11]; | |
| my @s=@_[12..15]; | |
| # direct optimizations from hardware | |
| $code.=<<___; | |
| veor @t[3], @x[4], @x[6] | |
| veor @t[2], @x[5], @x[7] | |
| veor @t[1], @x[1], @x[3] | |
| veor @s[1], @x[7], @x[6] | |
| vmov @t[0], @t[2] | |
| veor @s[0], @x[0], @x[2] | |
| vorr @t[2], @t[2], @t[1] | |
| veor @s[3], @t[3], @t[0] | |
| vand @s[2], @t[3], @s[0] | |
| vorr @t[3], @t[3], @s[0] | |
| veor @s[0], @s[0], @t[1] | |
| vand @t[0], @t[0], @t[1] | |
| veor @t[1], @x[3], @x[2] | |
| vand @s[3], @s[3], @s[0] | |
| vand @s[1], @s[1], @t[1] | |
| veor @t[1], @x[4], @x[5] | |
| veor @s[0], @x[1], @x[0] | |
| veor @t[3], @t[3], @s[1] | |
| veor @t[2], @t[2], @s[1] | |
| vand @s[1], @t[1], @s[0] | |
| vorr @t[1], @t[1], @s[0] | |
| veor @t[3], @t[3], @s[3] | |
| veor @t[0], @t[0], @s[1] | |
| veor @t[2], @t[2], @s[2] | |
| veor @t[1], @t[1], @s[3] | |
| veor @t[0], @t[0], @s[2] | |
| vand @s[0], @x[7], @x[3] | |
| veor @t[1], @t[1], @s[2] | |
| vand @s[1], @x[6], @x[2] | |
| vand @s[2], @x[5], @x[1] | |
| vorr @s[3], @x[4], @x[0] | |
| veor @t[3], @t[3], @s[0] | |
| veor @t[1], @t[1], @s[2] | |
| veor @t[0], @t[0], @s[3] | |
| veor @t[2], @t[2], @s[1] | |
| @ Inv_GF16 \t0, \t1, \t2, \t3, \s0, \s1, \s2, \s3 | |
| @ new smaller inversion | |
| vand @s[2], @t[3], @t[1] | |
| vmov @s[0], @t[0] | |
| veor @s[1], @t[2], @s[2] | |
| veor @s[3], @t[0], @s[2] | |
| veor @s[2], @t[0], @s[2] @ @s[2]=@s[3] | |
| vbsl @s[1], @t[1], @t[0] | |
| vbsl @s[3], @t[3], @t[2] | |
| veor @t[3], @t[3], @t[2] | |
| vbsl @s[0], @s[1], @s[2] | |
| vbsl @t[0], @s[2], @s[1] | |
| vand @s[2], @s[0], @s[3] | |
| veor @t[1], @t[1], @t[0] | |
| veor @s[2], @s[2], @t[3] | |
| ___ | |
| # output in s3, s2, s1, t1 | |
| # Mul_GF16_2 \x0, \x1, \x2, \x3, \x4, \x5, \x6, \x7, \t2, \t3, \t0, \t1, \s0, \s1, \s2, \s3 | |
| # Mul_GF16_2 \x0, \x1, \x2, \x3, \x4, \x5, \x6, \x7, \s3, \s2, \s1, \t1, \s0, \t0, \t2, \t3 | |
| &Mul_GF16_2(@x,@s[3,2,1],@t[1],@s[0],@t[0,2,3]); | |
| ### output msb > [x3,x2,x1,x0,x7,x6,x5,x4] < lsb | |
| } | |
| # AES linear components | |
| sub ShiftRows { | |
| my @x=@_[0..7]; | |
| my @t=@_[8..11]; | |
| my $mask=pop; | |
| $code.=<<___; | |
| vldmia $key!, {@t[0]-@t[3]} | |
| veor @t[0], @t[0], @x[0] | |
| veor @t[1], @t[1], @x[1] | |
| vtbl.8 `&Dlo(@x[0])`, {@t[0]}, `&Dlo($mask)` | |
| vtbl.8 `&Dhi(@x[0])`, {@t[0]}, `&Dhi($mask)` | |
| vldmia $key!, {@t[0]} | |
| veor @t[2], @t[2], @x[2] | |
| vtbl.8 `&Dlo(@x[1])`, {@t[1]}, `&Dlo($mask)` | |
| vtbl.8 `&Dhi(@x[1])`, {@t[1]}, `&Dhi($mask)` | |
| vldmia $key!, {@t[1]} | |
| veor @t[3], @t[3], @x[3] | |
| vtbl.8 `&Dlo(@x[2])`, {@t[2]}, `&Dlo($mask)` | |
| vtbl.8 `&Dhi(@x[2])`, {@t[2]}, `&Dhi($mask)` | |
| vldmia $key!, {@t[2]} | |
| vtbl.8 `&Dlo(@x[3])`, {@t[3]}, `&Dlo($mask)` | |
| vtbl.8 `&Dhi(@x[3])`, {@t[3]}, `&Dhi($mask)` | |
| vldmia $key!, {@t[3]} | |
| veor @t[0], @t[0], @x[4] | |
| veor @t[1], @t[1], @x[5] | |
| vtbl.8 `&Dlo(@x[4])`, {@t[0]}, `&Dlo($mask)` | |
| vtbl.8 `&Dhi(@x[4])`, {@t[0]}, `&Dhi($mask)` | |
| veor @t[2], @t[2], @x[6] | |
| vtbl.8 `&Dlo(@x[5])`, {@t[1]}, `&Dlo($mask)` | |
| vtbl.8 `&Dhi(@x[5])`, {@t[1]}, `&Dhi($mask)` | |
| veor @t[3], @t[3], @x[7] | |
| vtbl.8 `&Dlo(@x[6])`, {@t[2]}, `&Dlo($mask)` | |
| vtbl.8 `&Dhi(@x[6])`, {@t[2]}, `&Dhi($mask)` | |
| vtbl.8 `&Dlo(@x[7])`, {@t[3]}, `&Dlo($mask)` | |
| vtbl.8 `&Dhi(@x[7])`, {@t[3]}, `&Dhi($mask)` | |
| ___ | |
| } | |
| sub MixColumns { | |
| # modified to emit output in order suitable for feeding back to aesenc[last] | |
| my @x=@_[0..7]; | |
| my @t=@_[8..15]; | |
| my $inv=@_[16]; # optional | |
| $code.=<<___; | |
| vext.8 @t[0], @x[0], @x[0], #12 @ x0 <<< 32 | |
| vext.8 @t[1], @x[1], @x[1], #12 | |
| veor @x[0], @x[0], @t[0] @ x0 ^ (x0 <<< 32) | |
| vext.8 @t[2], @x[2], @x[2], #12 | |
| veor @x[1], @x[1], @t[1] | |
| vext.8 @t[3], @x[3], @x[3], #12 | |
| veor @x[2], @x[2], @t[2] | |
| vext.8 @t[4], @x[4], @x[4], #12 | |
| veor @x[3], @x[3], @t[3] | |
| vext.8 @t[5], @x[5], @x[5], #12 | |
| veor @x[4], @x[4], @t[4] | |
| vext.8 @t[6], @x[6], @x[6], #12 | |
| veor @x[5], @x[5], @t[5] | |
| vext.8 @t[7], @x[7], @x[7], #12 | |
| veor @x[6], @x[6], @t[6] | |
| veor @t[1], @t[1], @x[0] | |
| veor @x[7], @x[7], @t[7] | |
| vext.8 @x[0], @x[0], @x[0], #8 @ (x0 ^ (x0 <<< 32)) <<< 64) | |
| veor @t[2], @t[2], @x[1] | |
| veor @t[0], @t[0], @x[7] | |
| veor @t[1], @t[1], @x[7] | |
| vext.8 @x[1], @x[1], @x[1], #8 | |
| veor @t[5], @t[5], @x[4] | |
| veor @x[0], @x[0], @t[0] | |
| veor @t[6], @t[6], @x[5] | |
| veor @x[1], @x[1], @t[1] | |
| vext.8 @t[0], @x[4], @x[4], #8 | |
| veor @t[4], @t[4], @x[3] | |
| vext.8 @t[1], @x[5], @x[5], #8 | |
| veor @t[7], @t[7], @x[6] | |
| vext.8 @x[4], @x[3], @x[3], #8 | |
| veor @t[3], @t[3], @x[2] | |
| vext.8 @x[5], @x[7], @x[7], #8 | |
| veor @t[4], @t[4], @x[7] | |
| vext.8 @x[3], @x[6], @x[6], #8 | |
| veor @t[3], @t[3], @x[7] | |
| vext.8 @x[6], @x[2], @x[2], #8 | |
| veor @x[7], @t[1], @t[5] | |
| ___ | |
| $code.=<<___ if (!$inv); | |
| veor @x[2], @t[0], @t[4] | |
| veor @x[4], @x[4], @t[3] | |
| veor @x[5], @x[5], @t[7] | |
| veor @x[3], @x[3], @t[6] | |
| @ vmov @x[2], @t[0] | |
| veor @x[6], @x[6], @t[2] | |
| @ vmov @x[7], @t[1] | |
| ___ | |
| $code.=<<___ if ($inv); | |
| veor @t[3], @t[3], @x[4] | |
| veor @x[5], @x[5], @t[7] | |
| veor @x[2], @x[3], @t[6] | |
| veor @x[3], @t[0], @t[4] | |
| veor @x[4], @x[6], @t[2] | |
| vmov @x[6], @t[3] | |
| @ vmov @x[7], @t[1] | |
| ___ | |
| } | |
| sub InvMixColumns_orig { | |
| my @x=@_[0..7]; | |
| my @t=@_[8..15]; | |
| $code.=<<___; | |
| @ multiplication by 0x0e | |
| vext.8 @t[7], @x[7], @x[7], #12 | |
| vmov @t[2], @x[2] | |
| veor @x[2], @x[2], @x[5] @ 2 5 | |
| veor @x[7], @x[7], @x[5] @ 7 5 | |
| vext.8 @t[0], @x[0], @x[0], #12 | |
| vmov @t[5], @x[5] | |
| veor @x[5], @x[5], @x[0] @ 5 0 [1] | |
| veor @x[0], @x[0], @x[1] @ 0 1 | |
| vext.8 @t[1], @x[1], @x[1], #12 | |
| veor @x[1], @x[1], @x[2] @ 1 25 | |
| veor @x[0], @x[0], @x[6] @ 01 6 [2] | |
| vext.8 @t[3], @x[3], @x[3], #12 | |
| veor @x[1], @x[1], @x[3] @ 125 3 [4] | |
| veor @x[2], @x[2], @x[0] @ 25 016 [3] | |
| veor @x[3], @x[3], @x[7] @ 3 75 | |
| veor @x[7], @x[7], @x[6] @ 75 6 [0] | |
| vext.8 @t[6], @x[6], @x[6], #12 | |
| vmov @t[4], @x[4] | |
| veor @x[6], @x[6], @x[4] @ 6 4 | |
| veor @x[4], @x[4], @x[3] @ 4 375 [6] | |
| veor @x[3], @x[3], @x[7] @ 375 756=36 | |
| veor @x[6], @x[6], @t[5] @ 64 5 [7] | |
| veor @x[3], @x[3], @t[2] @ 36 2 | |
| vext.8 @t[5], @t[5], @t[5], #12 | |
| veor @x[3], @x[3], @t[4] @ 362 4 [5] | |
| ___ | |
| my @y = @x[7,5,0,2,1,3,4,6]; | |
| $code.=<<___; | |
| @ multiplication by 0x0b | |
| veor @y[1], @y[1], @y[0] | |
| veor @y[0], @y[0], @t[0] | |
| vext.8 @t[2], @t[2], @t[2], #12 | |
| veor @y[1], @y[1], @t[1] | |
| veor @y[0], @y[0], @t[5] | |
| vext.8 @t[4], @t[4], @t[4], #12 | |
| veor @y[1], @y[1], @t[6] | |
| veor @y[0], @y[0], @t[7] | |
| veor @t[7], @t[7], @t[6] @ clobber t[7] | |
| veor @y[3], @y[3], @t[0] | |
| veor @y[1], @y[1], @y[0] | |
| vext.8 @t[0], @t[0], @t[0], #12 | |
| veor @y[2], @y[2], @t[1] | |
| veor @y[4], @y[4], @t[1] | |
| vext.8 @t[1], @t[1], @t[1], #12 | |
| veor @y[2], @y[2], @t[2] | |
| veor @y[3], @y[3], @t[2] | |
| veor @y[5], @y[5], @t[2] | |
| veor @y[2], @y[2], @t[7] | |
| vext.8 @t[2], @t[2], @t[2], #12 | |
| veor @y[3], @y[3], @t[3] | |
| veor @y[6], @y[6], @t[3] | |
| veor @y[4], @y[4], @t[3] | |
| veor @y[7], @y[7], @t[4] | |
| vext.8 @t[3], @t[3], @t[3], #12 | |
| veor @y[5], @y[5], @t[4] | |
| veor @y[7], @y[7], @t[7] | |
| veor @t[7], @t[7], @t[5] @ clobber t[7] even more | |
| veor @y[3], @y[3], @t[5] | |
| veor @y[4], @y[4], @t[4] | |
| veor @y[5], @y[5], @t[7] | |
| vext.8 @t[4], @t[4], @t[4], #12 | |
| veor @y[6], @y[6], @t[7] | |
| veor @y[4], @y[4], @t[7] | |
| veor @t[7], @t[7], @t[5] | |
| vext.8 @t[5], @t[5], @t[5], #12 | |
| @ multiplication by 0x0d | |
| veor @y[4], @y[4], @y[7] | |
| veor @t[7], @t[7], @t[6] @ restore t[7] | |
| veor @y[7], @y[7], @t[4] | |
| vext.8 @t[6], @t[6], @t[6], #12 | |
| veor @y[2], @y[2], @t[0] | |
| veor @y[7], @y[7], @t[5] | |
| vext.8 @t[7], @t[7], @t[7], #12 | |
| veor @y[2], @y[2], @t[2] | |
| veor @y[3], @y[3], @y[1] | |
| veor @y[1], @y[1], @t[1] | |
| veor @y[0], @y[0], @t[0] | |
| veor @y[3], @y[3], @t[0] | |
| veor @y[1], @y[1], @t[5] | |
| veor @y[0], @y[0], @t[5] | |
| vext.8 @t[0], @t[0], @t[0], #12 | |
| veor @y[1], @y[1], @t[7] | |
| veor @y[0], @y[0], @t[6] | |
| veor @y[3], @y[3], @y[1] | |
| veor @y[4], @y[4], @t[1] | |
| vext.8 @t[1], @t[1], @t[1], #12 | |
| veor @y[7], @y[7], @t[7] | |
| veor @y[4], @y[4], @t[2] | |
| veor @y[5], @y[5], @t[2] | |
| veor @y[2], @y[2], @t[6] | |
| veor @t[6], @t[6], @t[3] @ clobber t[6] | |
| vext.8 @t[2], @t[2], @t[2], #12 | |
| veor @y[4], @y[4], @y[7] | |
| veor @y[3], @y[3], @t[6] | |
| veor @y[6], @y[6], @t[6] | |
| veor @y[5], @y[5], @t[5] | |
| vext.8 @t[5], @t[5], @t[5], #12 | |
| veor @y[6], @y[6], @t[4] | |
| vext.8 @t[4], @t[4], @t[4], #12 | |
| veor @y[5], @y[5], @t[6] | |
| veor @y[6], @y[6], @t[7] | |
| vext.8 @t[7], @t[7], @t[7], #12 | |
| veor @t[6], @t[6], @t[3] @ restore t[6] | |
| vext.8 @t[3], @t[3], @t[3], #12 | |
| @ multiplication by 0x09 | |
| veor @y[4], @y[4], @y[1] | |
| veor @t[1], @t[1], @y[1] @ t[1]=y[1] | |
| veor @t[0], @t[0], @t[5] @ clobber t[0] | |
| vext.8 @t[6], @t[6], @t[6], #12 | |
| veor @t[1], @t[1], @t[5] | |
| veor @y[3], @y[3], @t[0] | |
| veor @t[0], @t[0], @y[0] @ t[0]=y[0] | |
| veor @t[1], @t[1], @t[6] | |
| veor @t[6], @t[6], @t[7] @ clobber t[6] | |
| veor @y[4], @y[4], @t[1] | |
| veor @y[7], @y[7], @t[4] | |
| veor @y[6], @y[6], @t[3] | |
| veor @y[5], @y[5], @t[2] | |
| veor @t[4], @t[4], @y[4] @ t[4]=y[4] | |
| veor @t[3], @t[3], @y[3] @ t[3]=y[3] | |
| veor @t[5], @t[5], @y[5] @ t[5]=y[5] | |
| veor @t[2], @t[2], @y[2] @ t[2]=y[2] | |
| veor @t[3], @t[3], @t[7] | |
| veor @XMM[5], @t[5], @t[6] | |
| veor @XMM[6], @t[6], @y[6] @ t[6]=y[6] | |
| veor @XMM[2], @t[2], @t[6] | |
| veor @XMM[7], @t[7], @y[7] @ t[7]=y[7] | |
| vmov @XMM[0], @t[0] | |
| vmov @XMM[1], @t[1] | |
| @ vmov @XMM[2], @t[2] | |
| vmov @XMM[3], @t[3] | |
| vmov @XMM[4], @t[4] | |
| @ vmov @XMM[5], @t[5] | |
| @ vmov @XMM[6], @t[6] | |
| @ vmov @XMM[7], @t[7] | |
| ___ | |
| } | |
| sub InvMixColumns { | |
| my @x=@_[0..7]; | |
| my @t=@_[8..15]; | |
| # Thanks to Jussi Kivilinna for providing pointer to | |
| # | |
| # | 0e 0b 0d 09 | | 02 03 01 01 | | 05 00 04 00 | | |
| # | 09 0e 0b 0d | = | 01 02 03 01 | x | 00 05 00 04 | | |
| # | 0d 09 0e 0b | | 01 01 02 03 | | 04 00 05 00 | | |
| # | 0b 0d 09 0e | | 03 01 01 02 | | 00 04 00 05 | | |
| $code.=<<___; | |
| @ multiplication by 0x05-0x00-0x04-0x00 | |
| vext.8 @t[0], @x[0], @x[0], #8 | |
| vext.8 @t[6], @x[6], @x[6], #8 | |
| vext.8 @t[7], @x[7], @x[7], #8 | |
| veor @t[0], @t[0], @x[0] | |
| vext.8 @t[1], @x[1], @x[1], #8 | |
| veor @t[6], @t[6], @x[6] | |
| vext.8 @t[2], @x[2], @x[2], #8 | |
| veor @t[7], @t[7], @x[7] | |
| vext.8 @t[3], @x[3], @x[3], #8 | |
| veor @t[1], @t[1], @x[1] | |
| vext.8 @t[4], @x[4], @x[4], #8 | |
| veor @t[2], @t[2], @x[2] | |
| vext.8 @t[5], @x[5], @x[5], #8 | |
| veor @t[3], @t[3], @x[3] | |
| veor @t[4], @t[4], @x[4] | |
| veor @t[5], @t[5], @x[5] | |
| veor @x[0], @x[0], @t[6] | |
| veor @x[1], @x[1], @t[6] | |
| veor @x[2], @x[2], @t[0] | |
| veor @x[4], @x[4], @t[2] | |
| veor @x[3], @x[3], @t[1] | |
| veor @x[1], @x[1], @t[7] | |
| veor @x[2], @x[2], @t[7] | |
| veor @x[4], @x[4], @t[6] | |
| veor @x[5], @x[5], @t[3] | |
| veor @x[3], @x[3], @t[6] | |
| veor @x[6], @x[6], @t[4] | |
| veor @x[4], @x[4], @t[7] | |
| veor @x[5], @x[5], @t[7] | |
| veor @x[7], @x[7], @t[5] | |
| ___ | |
| &MixColumns (@x,@t,1); # flipped 2<->3 and 4<->6 | |
| } | |
| sub swapmove { | |
| my ($a,$b,$n,$mask,$t)=@_; | |
| $code.=<<___; | |
| vshr.u64 $t, $b, #$n | |
| veor $t, $t, $a | |
| vand $t, $t, $mask | |
| veor $a, $a, $t | |
| vshl.u64 $t, $t, #$n | |
| veor $b, $b, $t | |
| ___ | |
| } | |
| sub swapmove2x { | |
| my ($a0,$b0,$a1,$b1,$n,$mask,$t0,$t1)=@_; | |
| $code.=<<___; | |
| vshr.u64 $t0, $b0, #$n | |
| vshr.u64 $t1, $b1, #$n | |
| veor $t0, $t0, $a0 | |
| veor $t1, $t1, $a1 | |
| vand $t0, $t0, $mask | |
| vand $t1, $t1, $mask | |
| veor $a0, $a0, $t0 | |
| vshl.u64 $t0, $t0, #$n | |
| veor $a1, $a1, $t1 | |
| vshl.u64 $t1, $t1, #$n | |
| veor $b0, $b0, $t0 | |
| veor $b1, $b1, $t1 | |
| ___ | |
| } | |
| sub bitslice { | |
| my @x=reverse(@_[0..7]); | |
| my ($t0,$t1,$t2,$t3)=@_[8..11]; | |
| $code.=<<___; | |
| vmov.i8 $t0,#0x55 @ compose .LBS0 | |
| vmov.i8 $t1,#0x33 @ compose .LBS1 | |
| ___ | |
| &swapmove2x(@x[0,1,2,3],1,$t0,$t2,$t3); | |
| &swapmove2x(@x[4,5,6,7],1,$t0,$t2,$t3); | |
| $code.=<<___; | |
| vmov.i8 $t0,#0x0f @ compose .LBS2 | |
| ___ | |
| &swapmove2x(@x[0,2,1,3],2,$t1,$t2,$t3); | |
| &swapmove2x(@x[4,6,5,7],2,$t1,$t2,$t3); | |
| &swapmove2x(@x[0,4,1,5],4,$t0,$t2,$t3); | |
| &swapmove2x(@x[2,6,3,7],4,$t0,$t2,$t3); | |
| } | |
| $code.=<<___; | |
| #ifndef __KERNEL__ | |
| # define VFP_ABI_PUSH vstmdb sp!,{d8-d15} | |
| # define VFP_ABI_POP vldmia sp!,{d8-d15} | |
| # define VFP_ABI_FRAME 0x40 | |
| #else | |
| # define VFP_ABI_PUSH | |
| # define VFP_ABI_POP | |
| # define VFP_ABI_FRAME 0 | |
| # define BSAES_ASM_EXTENDED_KEY | |
| # define XTS_CHAIN_TWEAK | |
| # define __ARM_MAX_ARCH__ 7 | |
| #endif | |
| #ifdef __thumb__ | |
| # define adrl adr | |
| #endif | |
| #if __ARM_MAX_ARCH__>=7 | |
| .arch armv7-a | |
| .fpu neon | |
| .text | |
| .syntax unified @ ARMv7-capable assembler is expected to handle this | |
| #if defined(__thumb2__) && !defined(__APPLE__) | |
| .thumb | |
| #else | |
| .code 32 | |
| # undef __thumb2__ | |
| #endif | |
| .type _bsaes_decrypt8,%function | |
| .align 4 | |
| _bsaes_decrypt8: | |
| adr $const,. | |
| vldmia $key!, {@XMM[9]} @ round 0 key | |
| #if defined(__thumb2__) || defined(__APPLE__) | |
| adr $const,.LM0ISR | |
| #else | |
| add $const,$const,#.LM0ISR-_bsaes_decrypt8 | |
| #endif | |
| vldmia $const!, {@XMM[8]} @ .LM0ISR | |
| veor @XMM[10], @XMM[0], @XMM[9] @ xor with round0 key | |
| veor @XMM[11], @XMM[1], @XMM[9] | |
| vtbl.8 `&Dlo(@XMM[0])`, {@XMM[10]}, `&Dlo(@XMM[8])` | |
| vtbl.8 `&Dhi(@XMM[0])`, {@XMM[10]}, `&Dhi(@XMM[8])` | |
| veor @XMM[12], @XMM[2], @XMM[9] | |
| vtbl.8 `&Dlo(@XMM[1])`, {@XMM[11]}, `&Dlo(@XMM[8])` | |
| vtbl.8 `&Dhi(@XMM[1])`, {@XMM[11]}, `&Dhi(@XMM[8])` | |
| veor @XMM[13], @XMM[3], @XMM[9] | |
| vtbl.8 `&Dlo(@XMM[2])`, {@XMM[12]}, `&Dlo(@XMM[8])` | |
| vtbl.8 `&Dhi(@XMM[2])`, {@XMM[12]}, `&Dhi(@XMM[8])` | |
| veor @XMM[14], @XMM[4], @XMM[9] | |
| vtbl.8 `&Dlo(@XMM[3])`, {@XMM[13]}, `&Dlo(@XMM[8])` | |
| vtbl.8 `&Dhi(@XMM[3])`, {@XMM[13]}, `&Dhi(@XMM[8])` | |
| veor @XMM[15], @XMM[5], @XMM[9] | |
| vtbl.8 `&Dlo(@XMM[4])`, {@XMM[14]}, `&Dlo(@XMM[8])` | |
| vtbl.8 `&Dhi(@XMM[4])`, {@XMM[14]}, `&Dhi(@XMM[8])` | |
| veor @XMM[10], @XMM[6], @XMM[9] | |
| vtbl.8 `&Dlo(@XMM[5])`, {@XMM[15]}, `&Dlo(@XMM[8])` | |
| vtbl.8 `&Dhi(@XMM[5])`, {@XMM[15]}, `&Dhi(@XMM[8])` | |
| veor @XMM[11], @XMM[7], @XMM[9] | |
| vtbl.8 `&Dlo(@XMM[6])`, {@XMM[10]}, `&Dlo(@XMM[8])` | |
| vtbl.8 `&Dhi(@XMM[6])`, {@XMM[10]}, `&Dhi(@XMM[8])` | |
| vtbl.8 `&Dlo(@XMM[7])`, {@XMM[11]}, `&Dlo(@XMM[8])` | |
| vtbl.8 `&Dhi(@XMM[7])`, {@XMM[11]}, `&Dhi(@XMM[8])` | |
| ___ | |
| &bitslice (@XMM[0..7, 8..11]); | |
| $code.=<<___; | |
| sub $rounds,$rounds,#1 | |
| b .Ldec_sbox | |
| .align 4 | |
| .Ldec_loop: | |
| ___ | |
| &ShiftRows (@XMM[0..7, 8..12]); | |
| $code.=".Ldec_sbox:\n"; | |
| &InvSbox (@XMM[0..7, 8..15]); | |
| $code.=<<___; | |
| subs $rounds,$rounds,#1 | |
| bcc .Ldec_done | |
| ___ | |
| &InvMixColumns (@XMM[0,1,6,4,2,7,3,5, 8..15]); | |
| $code.=<<___; | |
| vldmia $const, {@XMM[12]} @ .LISR | |
| ite eq @ Thumb2 thing, sanity check in ARM | |
| addeq $const,$const,#0x10 | |
| bne .Ldec_loop | |
| vldmia $const, {@XMM[12]} @ .LISRM0 | |
| b .Ldec_loop | |
| .align 4 | |
| .Ldec_done: | |
| ___ | |
| &bitslice (@XMM[0,1,6,4,2,7,3,5, 8..11]); | |
| $code.=<<___; | |
| vldmia $key, {@XMM[8]} @ last round key | |
| veor @XMM[6], @XMM[6], @XMM[8] | |
| veor @XMM[4], @XMM[4], @XMM[8] | |
| veor @XMM[2], @XMM[2], @XMM[8] | |
| veor @XMM[7], @XMM[7], @XMM[8] | |
| veor @XMM[3], @XMM[3], @XMM[8] | |
| veor @XMM[5], @XMM[5], @XMM[8] | |
| veor @XMM[0], @XMM[0], @XMM[8] | |
| veor @XMM[1], @XMM[1], @XMM[8] | |
| bx lr | |
| .size _bsaes_decrypt8,.-_bsaes_decrypt8 | |
| .type _bsaes_const,%object | |
| .align 6 | |
| _bsaes_const: | |
| .LM0ISR: @ InvShiftRows constants | |
| .quad 0x0a0e0206070b0f03, 0x0004080c0d010509 | |
| .LISR: | |
| .quad 0x0504070602010003, 0x0f0e0d0c080b0a09 | |
| .LISRM0: | |
| .quad 0x01040b0e0205080f, 0x0306090c00070a0d | |
| .LM0SR: @ ShiftRows constants | |
| .quad 0x0a0e02060f03070b, 0x0004080c05090d01 | |
| .LSR: | |
| .quad 0x0504070600030201, 0x0f0e0d0c0a09080b | |
| .LSRM0: | |
| .quad 0x0304090e00050a0f, 0x01060b0c0207080d | |
| .LM0: | |
| .quad 0x02060a0e03070b0f, 0x0004080c0105090d | |
| .LREVM0SR: | |
| .quad 0x090d01050c000408, 0x03070b0f060a0e02 | |
| .asciz "Bit-sliced AES for NEON, CRYPTOGAMS by <appro\@openssl.org>" | |
| .align 6 | |
| .size _bsaes_const,.-_bsaes_const | |
| .type _bsaes_encrypt8,%function | |
| .align 4 | |
| _bsaes_encrypt8: | |
| adr $const,. | |
| vldmia $key!, {@XMM[9]} @ round 0 key | |
| #if defined(__thumb2__) || defined(__APPLE__) | |
| adr $const,.LM0SR | |
| #else | |
| sub $const,$const,#_bsaes_encrypt8-.LM0SR | |
| #endif | |
| vldmia $const!, {@XMM[8]} @ .LM0SR | |
| _bsaes_encrypt8_alt: | |
| veor @XMM[10], @XMM[0], @XMM[9] @ xor with round0 key | |
| veor @XMM[11], @XMM[1], @XMM[9] | |
| vtbl.8 `&Dlo(@XMM[0])`, {@XMM[10]}, `&Dlo(@XMM[8])` | |
| vtbl.8 `&Dhi(@XMM[0])`, {@XMM[10]}, `&Dhi(@XMM[8])` | |
| veor @XMM[12], @XMM[2], @XMM[9] | |
| vtbl.8 `&Dlo(@XMM[1])`, {@XMM[11]}, `&Dlo(@XMM[8])` | |
| vtbl.8 `&Dhi(@XMM[1])`, {@XMM[11]}, `&Dhi(@XMM[8])` | |
| veor @XMM[13], @XMM[3], @XMM[9] | |
| vtbl.8 `&Dlo(@XMM[2])`, {@XMM[12]}, `&Dlo(@XMM[8])` | |
| vtbl.8 `&Dhi(@XMM[2])`, {@XMM[12]}, `&Dhi(@XMM[8])` | |
| veor @XMM[14], @XMM[4], @XMM[9] | |
| vtbl.8 `&Dlo(@XMM[3])`, {@XMM[13]}, `&Dlo(@XMM[8])` | |
| vtbl.8 `&Dhi(@XMM[3])`, {@XMM[13]}, `&Dhi(@XMM[8])` | |
| veor @XMM[15], @XMM[5], @XMM[9] | |
| vtbl.8 `&Dlo(@XMM[4])`, {@XMM[14]}, `&Dlo(@XMM[8])` | |
| vtbl.8 `&Dhi(@XMM[4])`, {@XMM[14]}, `&Dhi(@XMM[8])` | |
| veor @XMM[10], @XMM[6], @XMM[9] | |
| vtbl.8 `&Dlo(@XMM[5])`, {@XMM[15]}, `&Dlo(@XMM[8])` | |
| vtbl.8 `&Dhi(@XMM[5])`, {@XMM[15]}, `&Dhi(@XMM[8])` | |
| veor @XMM[11], @XMM[7], @XMM[9] | |
| vtbl.8 `&Dlo(@XMM[6])`, {@XMM[10]}, `&Dlo(@XMM[8])` | |
| vtbl.8 `&Dhi(@XMM[6])`, {@XMM[10]}, `&Dhi(@XMM[8])` | |
| vtbl.8 `&Dlo(@XMM[7])`, {@XMM[11]}, `&Dlo(@XMM[8])` | |
| vtbl.8 `&Dhi(@XMM[7])`, {@XMM[11]}, `&Dhi(@XMM[8])` | |
| _bsaes_encrypt8_bitslice: | |
| ___ | |
| &bitslice (@XMM[0..7, 8..11]); | |
| $code.=<<___; | |
| sub $rounds,$rounds,#1 | |
| b .Lenc_sbox | |
| .align 4 | |
| .Lenc_loop: | |
| ___ | |
| &ShiftRows (@XMM[0..7, 8..12]); | |
| $code.=".Lenc_sbox:\n"; | |
| &Sbox (@XMM[0..7, 8..15]); | |
| $code.=<<___; | |
| subs $rounds,$rounds,#1 | |
| bcc .Lenc_done | |
| ___ | |
| &MixColumns (@XMM[0,1,4,6,3,7,2,5, 8..15]); | |
| $code.=<<___; | |
| vldmia $const, {@XMM[12]} @ .LSR | |
| ite eq @ Thumb2 thing, samity check in ARM | |
| addeq $const,$const,#0x10 | |
| bne .Lenc_loop | |
| vldmia $const, {@XMM[12]} @ .LSRM0 | |
| b .Lenc_loop | |
| .align 4 | |
| .Lenc_done: | |
| ___ | |
| # output in lsb > [t0, t1, t4, t6, t3, t7, t2, t5] < msb | |
| &bitslice (@XMM[0,1,4,6,3,7,2,5, 8..11]); | |
| $code.=<<___; | |
| vldmia $key, {@XMM[8]} @ last round key | |
| veor @XMM[4], @XMM[4], @XMM[8] | |
| veor @XMM[6], @XMM[6], @XMM[8] | |
| veor @XMM[3], @XMM[3], @XMM[8] | |
| veor @XMM[7], @XMM[7], @XMM[8] | |
| veor @XMM[2], @XMM[2], @XMM[8] | |
| veor @XMM[5], @XMM[5], @XMM[8] | |
| veor @XMM[0], @XMM[0], @XMM[8] | |
| veor @XMM[1], @XMM[1], @XMM[8] | |
| bx lr | |
| .size _bsaes_encrypt8,.-_bsaes_encrypt8 | |
| ___ | |
| } | |
| { | |
| my ($out,$inp,$rounds,$const)=("r12","r4","r5","r6"); | |
| sub bitslice_key { | |
| my @x=reverse(@_[0..7]); | |
| my ($bs0,$bs1,$bs2,$t2,$t3)=@_[8..12]; | |
| &swapmove (@x[0,1],1,$bs0,$t2,$t3); | |
| $code.=<<___; | |
| @ &swapmove(@x[2,3],1,$t0,$t2,$t3); | |
| vmov @x[2], @x[0] | |
| vmov @x[3], @x[1] | |
| ___ | |
| #&swapmove2x(@x[4,5,6,7],1,$t0,$t2,$t3); | |
| &swapmove2x (@x[0,2,1,3],2,$bs1,$t2,$t3); | |
| $code.=<<___; | |
| @ &swapmove2x(@x[4,6,5,7],2,$t1,$t2,$t3); | |
| vmov @x[4], @x[0] | |
| vmov @x[6], @x[2] | |
| vmov @x[5], @x[1] | |
| vmov @x[7], @x[3] | |
| ___ | |
| &swapmove2x (@x[0,4,1,5],4,$bs2,$t2,$t3); | |
| &swapmove2x (@x[2,6,3,7],4,$bs2,$t2,$t3); | |
| } | |
| $code.=<<___; | |
| .type _bsaes_key_convert,%function | |
| .align 4 | |
| _bsaes_key_convert: | |
| adr $const,. | |
| vld1.8 {@XMM[7]}, [$inp]! @ load round 0 key | |
| #if defined(__thumb2__) || defined(__APPLE__) | |
| adr $const,.LM0 | |
| #else | |
| sub $const,$const,#_bsaes_key_convert-.LM0 | |
| #endif | |
| vld1.8 {@XMM[15]}, [$inp]! @ load round 1 key | |
| vmov.i8 @XMM[8], #0x01 @ bit masks | |
| vmov.i8 @XMM[9], #0x02 | |
| vmov.i8 @XMM[10], #0x04 | |
| vmov.i8 @XMM[11], #0x08 | |
| vmov.i8 @XMM[12], #0x10 | |
| vmov.i8 @XMM[13], #0x20 | |
| vldmia $const, {@XMM[14]} @ .LM0 | |
| #ifdef __ARMEL__ | |
| vrev32.8 @XMM[7], @XMM[7] | |
| vrev32.8 @XMM[15], @XMM[15] | |
| #endif | |
| sub $rounds,$rounds,#1 | |
| vstmia $out!, {@XMM[7]} @ save round 0 key | |
| b .Lkey_loop | |
| .align 4 | |
| .Lkey_loop: | |
| vtbl.8 `&Dlo(@XMM[7])`,{@XMM[15]},`&Dlo(@XMM[14])` | |
| vtbl.8 `&Dhi(@XMM[7])`,{@XMM[15]},`&Dhi(@XMM[14])` | |
| vmov.i8 @XMM[6], #0x40 | |
| vmov.i8 @XMM[15], #0x80 | |
| vtst.8 @XMM[0], @XMM[7], @XMM[8] | |
| vtst.8 @XMM[1], @XMM[7], @XMM[9] | |
| vtst.8 @XMM[2], @XMM[7], @XMM[10] | |
| vtst.8 @XMM[3], @XMM[7], @XMM[11] | |
| vtst.8 @XMM[4], @XMM[7], @XMM[12] | |
| vtst.8 @XMM[5], @XMM[7], @XMM[13] | |
| vtst.8 @XMM[6], @XMM[7], @XMM[6] | |
| vtst.8 @XMM[7], @XMM[7], @XMM[15] | |
| vld1.8 {@XMM[15]}, [$inp]! @ load next round key | |
| vmvn @XMM[0], @XMM[0] @ "pnot" | |
| vmvn @XMM[1], @XMM[1] | |
| vmvn @XMM[5], @XMM[5] | |
| vmvn @XMM[6], @XMM[6] | |
| #ifdef __ARMEL__ | |
| vrev32.8 @XMM[15], @XMM[15] | |
| #endif | |
| subs $rounds,$rounds,#1 | |
| vstmia $out!,{@XMM[0]-@XMM[7]} @ write bit-sliced round key | |
| bne .Lkey_loop | |
| vmov.i8 @XMM[7],#0x63 @ compose .L63 | |
| @ don't save last round key | |
| bx lr | |
| .size _bsaes_key_convert,.-_bsaes_key_convert | |
| ___ | |
| } | |
| if (0) { # following four functions are unsupported interface | |
| # used for benchmarking... | |
| $code.=<<___; | |
| .globl bsaes_enc_key_convert | |
| .type bsaes_enc_key_convert,%function | |
| .align 4 | |
| bsaes_enc_key_convert: | |
| stmdb sp!,{r4-r6,lr} | |
| vstmdb sp!,{d8-d15} @ ABI specification says so | |
| ldr r5,[$inp,#240] @ pass rounds | |
| mov r4,$inp @ pass key | |
| mov r12,$out @ pass key schedule | |
| bl _bsaes_key_convert | |
| veor @XMM[7],@XMM[7],@XMM[15] @ fix up last round key | |
| vstmia r12, {@XMM[7]} @ save last round key | |
| vldmia sp!,{d8-d15} | |
| ldmia sp!,{r4-r6,pc} | |
| .size bsaes_enc_key_convert,.-bsaes_enc_key_convert | |
| .globl bsaes_encrypt_128 | |
| .type bsaes_encrypt_128,%function | |
| .align 4 | |
| bsaes_encrypt_128: | |
| stmdb sp!,{r4-r6,lr} | |
| vstmdb sp!,{d8-d15} @ ABI specification says so | |
| .Lenc128_loop: | |
| vld1.8 {@XMM[0]-@XMM[1]}, [$inp]! @ load input | |
| vld1.8 {@XMM[2]-@XMM[3]}, [$inp]! | |
| mov r4,$key @ pass the key | |
| vld1.8 {@XMM[4]-@XMM[5]}, [$inp]! | |
| mov r5,#10 @ pass rounds | |
| vld1.8 {@XMM[6]-@XMM[7]}, [$inp]! | |
| bl _bsaes_encrypt8 | |
| vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | |
| vst1.8 {@XMM[4]}, [$out]! | |
| vst1.8 {@XMM[6]}, [$out]! | |
| vst1.8 {@XMM[3]}, [$out]! | |
| vst1.8 {@XMM[7]}, [$out]! | |
| vst1.8 {@XMM[2]}, [$out]! | |
| subs $len,$len,#0x80 | |
| vst1.8 {@XMM[5]}, [$out]! | |
| bhi .Lenc128_loop | |
| vldmia sp!,{d8-d15} | |
| ldmia sp!,{r4-r6,pc} | |
| .size bsaes_encrypt_128,.-bsaes_encrypt_128 | |
| .globl bsaes_dec_key_convert | |
| .type bsaes_dec_key_convert,%function | |
| .align 4 | |
| bsaes_dec_key_convert: | |
| stmdb sp!,{r4-r6,lr} | |
| vstmdb sp!,{d8-d15} @ ABI specification says so | |
| ldr r5,[$inp,#240] @ pass rounds | |
| mov r4,$inp @ pass key | |
| mov r12,$out @ pass key schedule | |
| bl _bsaes_key_convert | |
| vldmia $out, {@XMM[6]} | |
| vstmia r12, {@XMM[15]} @ save last round key | |
| veor @XMM[7], @XMM[7], @XMM[6] @ fix up round 0 key | |
| vstmia $out, {@XMM[7]} | |
| vldmia sp!,{d8-d15} | |
| ldmia sp!,{r4-r6,pc} | |
| .size bsaes_dec_key_convert,.-bsaes_dec_key_convert | |
| .globl bsaes_decrypt_128 | |
| .type bsaes_decrypt_128,%function | |
| .align 4 | |
| bsaes_decrypt_128: | |
| stmdb sp!,{r4-r6,lr} | |
| vstmdb sp!,{d8-d15} @ ABI specification says so | |
| .Ldec128_loop: | |
| vld1.8 {@XMM[0]-@XMM[1]}, [$inp]! @ load input | |
| vld1.8 {@XMM[2]-@XMM[3]}, [$inp]! | |
| mov r4,$key @ pass the key | |
| vld1.8 {@XMM[4]-@XMM[5]}, [$inp]! | |
| mov r5,#10 @ pass rounds | |
| vld1.8 {@XMM[6]-@XMM[7]}, [$inp]! | |
| bl _bsaes_decrypt8 | |
| vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | |
| vst1.8 {@XMM[6]}, [$out]! | |
| vst1.8 {@XMM[4]}, [$out]! | |
| vst1.8 {@XMM[2]}, [$out]! | |
| vst1.8 {@XMM[7]}, [$out]! | |
| vst1.8 {@XMM[3]}, [$out]! | |
| subs $len,$len,#0x80 | |
| vst1.8 {@XMM[5]}, [$out]! | |
| bhi .Ldec128_loop | |
| vldmia sp!,{d8-d15} | |
| ldmia sp!,{r4-r6,pc} | |
| .size bsaes_decrypt_128,.-bsaes_decrypt_128 | |
| ___ | |
| } | |
| { | |
| my ($inp,$out,$len,$key, $ivp,$fp,$rounds)=map("r$_",(0..3,8..10)); | |
| my ($keysched)=("sp"); | |
| $code.=<<___; | |
| .global bsaes_cbc_encrypt | |
| .type bsaes_cbc_encrypt,%function | |
| .align 5 | |
| bsaes_cbc_encrypt: | |
| @ In OpenSSL, this function had a fallback to aes_nohw_cbc_encrypt for | |
| @ short inputs. We patch this out, using bsaes for all input sizes. | |
| @ it is up to the caller to make sure we are called with enc == 0 | |
| mov ip, sp | |
| stmdb sp!, {r4-r10, lr} | |
| VFP_ABI_PUSH | |
| ldr $ivp, [ip] @ IV is 1st arg on the stack | |
| mov $len, $len, lsr#4 @ len in 16 byte blocks | |
| sub sp, #0x10 @ scratch space to carry over the IV | |
| mov $fp, sp @ save sp | |
| ldr $rounds, [$key, #240] @ get # of rounds | |
| #ifndef BSAES_ASM_EXTENDED_KEY | |
| @ allocate the key schedule on the stack | |
| sub r12, sp, $rounds, lsl#7 @ 128 bytes per inner round key | |
| add r12, #`128-32` @ sifze of bit-slices key schedule | |
| @ populate the key schedule | |
| mov r4, $key @ pass key | |
| mov r5, $rounds @ pass # of rounds | |
| mov sp, r12 @ sp is $keysched | |
| bl _bsaes_key_convert | |
| vldmia $keysched, {@XMM[6]} | |
| vstmia r12, {@XMM[15]} @ save last round key | |
| veor @XMM[7], @XMM[7], @XMM[6] @ fix up round 0 key | |
| vstmia $keysched, {@XMM[7]} | |
| #else | |
| ldr r12, [$key, #244] | |
| eors r12, #1 | |
| beq 0f | |
| @ populate the key schedule | |
| str r12, [$key, #244] | |
| mov r4, $key @ pass key | |
| mov r5, $rounds @ pass # of rounds | |
| add r12, $key, #248 @ pass key schedule | |
| bl _bsaes_key_convert | |
| add r4, $key, #248 | |
| vldmia r4, {@XMM[6]} | |
| vstmia r12, {@XMM[15]} @ save last round key | |
| veor @XMM[7], @XMM[7], @XMM[6] @ fix up round 0 key | |
| vstmia r4, {@XMM[7]} | |
| .align 2 | |
| 0: | |
| #endif | |
| vld1.8 {@XMM[15]}, [$ivp] @ load IV | |
| b .Lcbc_dec_loop | |
| .align 4 | |
| .Lcbc_dec_loop: | |
| subs $len, $len, #0x8 | |
| bmi .Lcbc_dec_loop_finish | |
| vld1.8 {@XMM[0]-@XMM[1]}, [$inp]! @ load input | |
| vld1.8 {@XMM[2]-@XMM[3]}, [$inp]! | |
| #ifndef BSAES_ASM_EXTENDED_KEY | |
| mov r4, $keysched @ pass the key | |
| #else | |
| add r4, $key, #248 | |
| #endif | |
| vld1.8 {@XMM[4]-@XMM[5]}, [$inp]! | |
| mov r5, $rounds | |
| vld1.8 {@XMM[6]-@XMM[7]}, [$inp] | |
| sub $inp, $inp, #0x60 | |
| vstmia $fp, {@XMM[15]} @ put aside IV | |
| bl _bsaes_decrypt8 | |
| vldmia $fp, {@XMM[14]} @ reload IV | |
| vld1.8 {@XMM[8]-@XMM[9]}, [$inp]! @ reload input | |
| veor @XMM[0], @XMM[0], @XMM[14] @ ^= IV | |
| vld1.8 {@XMM[10]-@XMM[11]}, [$inp]! | |
| veor @XMM[1], @XMM[1], @XMM[8] | |
| veor @XMM[6], @XMM[6], @XMM[9] | |
| vld1.8 {@XMM[12]-@XMM[13]}, [$inp]! | |
| veor @XMM[4], @XMM[4], @XMM[10] | |
| veor @XMM[2], @XMM[2], @XMM[11] | |
| vld1.8 {@XMM[14]-@XMM[15]}, [$inp]! | |
| veor @XMM[7], @XMM[7], @XMM[12] | |
| vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | |
| veor @XMM[3], @XMM[3], @XMM[13] | |
| vst1.8 {@XMM[6]}, [$out]! | |
| veor @XMM[5], @XMM[5], @XMM[14] | |
| vst1.8 {@XMM[4]}, [$out]! | |
| vst1.8 {@XMM[2]}, [$out]! | |
| vst1.8 {@XMM[7]}, [$out]! | |
| vst1.8 {@XMM[3]}, [$out]! | |
| vst1.8 {@XMM[5]}, [$out]! | |
| b .Lcbc_dec_loop | |
| .Lcbc_dec_loop_finish: | |
| adds $len, $len, #8 | |
| beq .Lcbc_dec_done | |
| @ Set up most parameters for the _bsaes_decrypt8 call. | |
| #ifndef BSAES_ASM_EXTENDED_KEY | |
| mov r4, $keysched @ pass the key | |
| #else | |
| add r4, $key, #248 | |
| #endif | |
| mov r5, $rounds | |
| vstmia $fp, {@XMM[15]} @ put aside IV | |
| vld1.8 {@XMM[0]}, [$inp]! @ load input | |
| cmp $len, #2 | |
| blo .Lcbc_dec_one | |
| vld1.8 {@XMM[1]}, [$inp]! | |
| beq .Lcbc_dec_two | |
| vld1.8 {@XMM[2]}, [$inp]! | |
| cmp $len, #4 | |
| blo .Lcbc_dec_three | |
| vld1.8 {@XMM[3]}, [$inp]! | |
| beq .Lcbc_dec_four | |
| vld1.8 {@XMM[4]}, [$inp]! | |
| cmp $len, #6 | |
| blo .Lcbc_dec_five | |
| vld1.8 {@XMM[5]}, [$inp]! | |
| beq .Lcbc_dec_six | |
| vld1.8 {@XMM[6]}, [$inp]! | |
| sub $inp, $inp, #0x70 | |
| bl _bsaes_decrypt8 | |
| vldmia $fp, {@XMM[14]} @ reload IV | |
| vld1.8 {@XMM[8]-@XMM[9]}, [$inp]! @ reload input | |
| veor @XMM[0], @XMM[0], @XMM[14] @ ^= IV | |
| vld1.8 {@XMM[10]-@XMM[11]}, [$inp]! | |
| veor @XMM[1], @XMM[1], @XMM[8] | |
| veor @XMM[6], @XMM[6], @XMM[9] | |
| vld1.8 {@XMM[12]-@XMM[13]}, [$inp]! | |
| veor @XMM[4], @XMM[4], @XMM[10] | |
| veor @XMM[2], @XMM[2], @XMM[11] | |
| vld1.8 {@XMM[15]}, [$inp]! | |
| veor @XMM[7], @XMM[7], @XMM[12] | |
| vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | |
| veor @XMM[3], @XMM[3], @XMM[13] | |
| vst1.8 {@XMM[6]}, [$out]! | |
| vst1.8 {@XMM[4]}, [$out]! | |
| vst1.8 {@XMM[2]}, [$out]! | |
| vst1.8 {@XMM[7]}, [$out]! | |
| vst1.8 {@XMM[3]}, [$out]! | |
| b .Lcbc_dec_done | |
| .align 4 | |
| .Lcbc_dec_six: | |
| sub $inp, $inp, #0x60 | |
| bl _bsaes_decrypt8 | |
| vldmia $fp,{@XMM[14]} @ reload IV | |
| vld1.8 {@XMM[8]-@XMM[9]}, [$inp]! @ reload input | |
| veor @XMM[0], @XMM[0], @XMM[14] @ ^= IV | |
| vld1.8 {@XMM[10]-@XMM[11]}, [$inp]! | |
| veor @XMM[1], @XMM[1], @XMM[8] | |
| veor @XMM[6], @XMM[6], @XMM[9] | |
| vld1.8 {@XMM[12]}, [$inp]! | |
| veor @XMM[4], @XMM[4], @XMM[10] | |
| veor @XMM[2], @XMM[2], @XMM[11] | |
| vld1.8 {@XMM[15]}, [$inp]! | |
| veor @XMM[7], @XMM[7], @XMM[12] | |
| vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | |
| vst1.8 {@XMM[6]}, [$out]! | |
| vst1.8 {@XMM[4]}, [$out]! | |
| vst1.8 {@XMM[2]}, [$out]! | |
| vst1.8 {@XMM[7]}, [$out]! | |
| b .Lcbc_dec_done | |
| .align 4 | |
| .Lcbc_dec_five: | |
| sub $inp, $inp, #0x50 | |
| bl _bsaes_decrypt8 | |
| vldmia $fp, {@XMM[14]} @ reload IV | |
| vld1.8 {@XMM[8]-@XMM[9]}, [$inp]! @ reload input | |
| veor @XMM[0], @XMM[0], @XMM[14] @ ^= IV | |
| vld1.8 {@XMM[10]-@XMM[11]}, [$inp]! | |
| veor @XMM[1], @XMM[1], @XMM[8] | |
| veor @XMM[6], @XMM[6], @XMM[9] | |
| vld1.8 {@XMM[15]}, [$inp]! | |
| veor @XMM[4], @XMM[4], @XMM[10] | |
| vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | |
| veor @XMM[2], @XMM[2], @XMM[11] | |
| vst1.8 {@XMM[6]}, [$out]! | |
| vst1.8 {@XMM[4]}, [$out]! | |
| vst1.8 {@XMM[2]}, [$out]! | |
| b .Lcbc_dec_done | |
| .align 4 | |
| .Lcbc_dec_four: | |
| sub $inp, $inp, #0x40 | |
| bl _bsaes_decrypt8 | |
| vldmia $fp, {@XMM[14]} @ reload IV | |
| vld1.8 {@XMM[8]-@XMM[9]}, [$inp]! @ reload input | |
| veor @XMM[0], @XMM[0], @XMM[14] @ ^= IV | |
| vld1.8 {@XMM[10]}, [$inp]! | |
| veor @XMM[1], @XMM[1], @XMM[8] | |
| veor @XMM[6], @XMM[6], @XMM[9] | |
| vld1.8 {@XMM[15]}, [$inp]! | |
| veor @XMM[4], @XMM[4], @XMM[10] | |
| vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | |
| vst1.8 {@XMM[6]}, [$out]! | |
| vst1.8 {@XMM[4]}, [$out]! | |
| b .Lcbc_dec_done | |
| .align 4 | |
| .Lcbc_dec_three: | |
| sub $inp, $inp, #0x30 | |
| bl _bsaes_decrypt8 | |
| vldmia $fp, {@XMM[14]} @ reload IV | |
| vld1.8 {@XMM[8]-@XMM[9]}, [$inp]! @ reload input | |
| veor @XMM[0], @XMM[0], @XMM[14] @ ^= IV | |
| vld1.8 {@XMM[15]}, [$inp]! | |
| veor @XMM[1], @XMM[1], @XMM[8] | |
| veor @XMM[6], @XMM[6], @XMM[9] | |
| vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | |
| vst1.8 {@XMM[6]}, [$out]! | |
| b .Lcbc_dec_done | |
| .align 4 | |
| .Lcbc_dec_two: | |
| sub $inp, $inp, #0x20 | |
| bl _bsaes_decrypt8 | |
| vldmia $fp, {@XMM[14]} @ reload IV | |
| vld1.8 {@XMM[8]}, [$inp]! @ reload input | |
| veor @XMM[0], @XMM[0], @XMM[14] @ ^= IV | |
| vld1.8 {@XMM[15]}, [$inp]! @ reload input | |
| veor @XMM[1], @XMM[1], @XMM[8] | |
| vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | |
| b .Lcbc_dec_done | |
| .align 4 | |
| .Lcbc_dec_one: | |
| sub $inp, $inp, #0x10 | |
| bl _bsaes_decrypt8 | |
| vldmia $fp, {@XMM[14]} @ reload IV | |
| vld1.8 {@XMM[15]}, [$inp]! @ reload input | |
| veor @XMM[0], @XMM[0], @XMM[14] @ ^= IV | |
| vst1.8 {@XMM[0]}, [$out]! @ write output | |
| .Lcbc_dec_done: | |
| #ifndef BSAES_ASM_EXTENDED_KEY | |
| vmov.i32 q0, #0 | |
| vmov.i32 q1, #0 | |
| .Lcbc_dec_bzero: @ wipe key schedule [if any] | |
| vstmia $keysched!, {q0-q1} | |
| cmp $keysched, $fp | |
| bne .Lcbc_dec_bzero | |
| #endif | |
| mov sp, $fp | |
| add sp, #0x10 @ add sp,$fp,#0x10 is no good for thumb | |
| vst1.8 {@XMM[15]}, [$ivp] @ return IV | |
| VFP_ABI_POP | |
| ldmia sp!, {r4-r10, pc} | |
| .size bsaes_cbc_encrypt,.-bsaes_cbc_encrypt | |
| ___ | |
| } | |
| { | |
| my ($inp,$out,$len,$key, $ctr,$fp,$rounds)=(map("r$_",(0..3,8..10))); | |
| my $const = "r6"; # shared with _bsaes_encrypt8_alt | |
| my $keysched = "sp"; | |
| $code.=<<___; | |
| .global bsaes_ctr32_encrypt_blocks | |
| .type bsaes_ctr32_encrypt_blocks,%function | |
| .align 5 | |
| bsaes_ctr32_encrypt_blocks: | |
| @ In OpenSSL, short inputs fall back to aes_nohw_* here. We patch this | |
| @ out to retain a constant-time implementation. | |
| mov ip, sp | |
| stmdb sp!, {r4-r10, lr} | |
| VFP_ABI_PUSH | |
| ldr $ctr, [ip] @ ctr is 1st arg on the stack | |
| sub sp, sp, #0x10 @ scratch space to carry over the ctr | |
| mov $fp, sp @ save sp | |
| ldr $rounds, [$key, #240] @ get # of rounds | |
| #ifndef BSAES_ASM_EXTENDED_KEY | |
| @ allocate the key schedule on the stack | |
| sub r12, sp, $rounds, lsl#7 @ 128 bytes per inner round key | |
| add r12, #`128-32` @ size of bit-sliced key schedule | |
| @ populate the key schedule | |
| mov r4, $key @ pass key | |
| mov r5, $rounds @ pass # of rounds | |
| mov sp, r12 @ sp is $keysched | |
| bl _bsaes_key_convert | |
| veor @XMM[7],@XMM[7],@XMM[15] @ fix up last round key | |
| vstmia r12, {@XMM[7]} @ save last round key | |
| vld1.8 {@XMM[0]}, [$ctr] @ load counter | |
| #ifdef __APPLE__ | |
| mov $ctr, #:lower16:(.LREVM0SR-.LM0) | |
| add $ctr, $const, $ctr | |
| #else | |
| add $ctr, $const, #.LREVM0SR-.LM0 @ borrow $ctr | |
| #endif | |
| vldmia $keysched, {@XMM[4]} @ load round0 key | |
| #else | |
| ldr r12, [$key, #244] | |
| eors r12, #1 | |
| beq 0f | |
| @ populate the key schedule | |
| str r12, [$key, #244] | |
| mov r4, $key @ pass key | |
| mov r5, $rounds @ pass # of rounds | |
| add r12, $key, #248 @ pass key schedule | |
| bl _bsaes_key_convert | |
| veor @XMM[7],@XMM[7],@XMM[15] @ fix up last round key | |
| vstmia r12, {@XMM[7]} @ save last round key | |
| .align 2 | |
| 0: add r12, $key, #248 | |
| vld1.8 {@XMM[0]}, [$ctr] @ load counter | |
| adrl $ctr, .LREVM0SR @ borrow $ctr | |
| vldmia r12, {@XMM[4]} @ load round0 key | |
| sub sp, #0x10 @ place for adjusted round0 key | |
| #endif | |
| vmov.i32 @XMM[8],#1 @ compose 1<<96 | |
| veor @XMM[9],@XMM[9],@XMM[9] | |
| vrev32.8 @XMM[0],@XMM[0] | |
| vext.8 @XMM[8],@XMM[9],@XMM[8],#4 | |
| vrev32.8 @XMM[4],@XMM[4] | |
| vadd.u32 @XMM[9],@XMM[8],@XMM[8] @ compose 2<<96 | |
| vstmia $keysched, {@XMM[4]} @ save adjusted round0 key | |
| b .Lctr_enc_loop | |
| .align 4 | |
| .Lctr_enc_loop: | |
| vadd.u32 @XMM[10], @XMM[8], @XMM[9] @ compose 3<<96 | |
| vadd.u32 @XMM[1], @XMM[0], @XMM[8] @ +1 | |
| vadd.u32 @XMM[2], @XMM[0], @XMM[9] @ +2 | |
| vadd.u32 @XMM[3], @XMM[0], @XMM[10] @ +3 | |
| vadd.u32 @XMM[4], @XMM[1], @XMM[10] | |
| vadd.u32 @XMM[5], @XMM[2], @XMM[10] | |
| vadd.u32 @XMM[6], @XMM[3], @XMM[10] | |
| vadd.u32 @XMM[7], @XMM[4], @XMM[10] | |
| vadd.u32 @XMM[10], @XMM[5], @XMM[10] @ next counter | |
| @ Borrow prologue from _bsaes_encrypt8 to use the opportunity | |
| @ to flip byte order in 32-bit counter | |
| vldmia $keysched, {@XMM[9]} @ load round0 key | |
| #ifndef BSAES_ASM_EXTENDED_KEY | |
| add r4, $keysched, #0x10 @ pass next round key | |
| #else | |
| add r4, $key, #`248+16` | |
| #endif | |
| vldmia $ctr, {@XMM[8]} @ .LREVM0SR | |
| mov r5, $rounds @ pass rounds | |
| vstmia $fp, {@XMM[10]} @ save next counter | |
| #ifdef __APPLE__ | |
| mov $const, #:lower16:(.LREVM0SR-.LSR) | |
| sub $const, $ctr, $const | |
| #else | |
| sub $const, $ctr, #.LREVM0SR-.LSR @ pass constants | |
| #endif | |
| bl _bsaes_encrypt8_alt | |
| subs $len, $len, #8 | |
| blo .Lctr_enc_loop_done | |
| vld1.8 {@XMM[8]-@XMM[9]}, [$inp]! @ load input | |
| vld1.8 {@XMM[10]-@XMM[11]}, [$inp]! | |
| veor @XMM[0], @XMM[8] | |
| veor @XMM[1], @XMM[9] | |
| vld1.8 {@XMM[12]-@XMM[13]}, [$inp]! | |
| veor @XMM[4], @XMM[10] | |
| veor @XMM[6], @XMM[11] | |
| vld1.8 {@XMM[14]-@XMM[15]}, [$inp]! | |
| veor @XMM[3], @XMM[12] | |
| vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | |
| veor @XMM[7], @XMM[13] | |
| veor @XMM[2], @XMM[14] | |
| vst1.8 {@XMM[4]}, [$out]! | |
| veor @XMM[5], @XMM[15] | |
| vst1.8 {@XMM[6]}, [$out]! | |
| vmov.i32 @XMM[8], #1 @ compose 1<<96 | |
| vst1.8 {@XMM[3]}, [$out]! | |
| veor @XMM[9], @XMM[9], @XMM[9] | |
| vst1.8 {@XMM[7]}, [$out]! | |
| vext.8 @XMM[8], @XMM[9], @XMM[8], #4 | |
| vst1.8 {@XMM[2]}, [$out]! | |
| vadd.u32 @XMM[9],@XMM[8],@XMM[8] @ compose 2<<96 | |
| vst1.8 {@XMM[5]}, [$out]! | |
| vldmia $fp, {@XMM[0]} @ load counter | |
| bne .Lctr_enc_loop | |
| b .Lctr_enc_done | |
| .align 4 | |
| .Lctr_enc_loop_done: | |
| add $len, $len, #8 | |
| vld1.8 {@XMM[8]}, [$inp]! @ load input | |
| veor @XMM[0], @XMM[8] | |
| vst1.8 {@XMM[0]}, [$out]! @ write output | |
| cmp $len, #2 | |
| blo .Lctr_enc_done | |
| vld1.8 {@XMM[9]}, [$inp]! | |
| veor @XMM[1], @XMM[9] | |
| vst1.8 {@XMM[1]}, [$out]! | |
| beq .Lctr_enc_done | |
| vld1.8 {@XMM[10]}, [$inp]! | |
| veor @XMM[4], @XMM[10] | |
| vst1.8 {@XMM[4]}, [$out]! | |
| cmp $len, #4 | |
| blo .Lctr_enc_done | |
| vld1.8 {@XMM[11]}, [$inp]! | |
| veor @XMM[6], @XMM[11] | |
| vst1.8 {@XMM[6]}, [$out]! | |
| beq .Lctr_enc_done | |
| vld1.8 {@XMM[12]}, [$inp]! | |
| veor @XMM[3], @XMM[12] | |
| vst1.8 {@XMM[3]}, [$out]! | |
| cmp $len, #6 | |
| blo .Lctr_enc_done | |
| vld1.8 {@XMM[13]}, [$inp]! | |
| veor @XMM[7], @XMM[13] | |
| vst1.8 {@XMM[7]}, [$out]! | |
| beq .Lctr_enc_done | |
| vld1.8 {@XMM[14]}, [$inp] | |
| veor @XMM[2], @XMM[14] | |
| vst1.8 {@XMM[2]}, [$out]! | |
| .Lctr_enc_done: | |
| vmov.i32 q0, #0 | |
| vmov.i32 q1, #0 | |
| #ifndef BSAES_ASM_EXTENDED_KEY | |
| .Lctr_enc_bzero: @ wipe key schedule [if any] | |
| vstmia $keysched!, {q0-q1} | |
| cmp $keysched, $fp | |
| bne .Lctr_enc_bzero | |
| #else | |
| vstmia $keysched, {q0-q1} | |
| #endif | |
| mov sp, $fp | |
| add sp, #0x10 @ add sp,$fp,#0x10 is no good for thumb | |
| VFP_ABI_POP | |
| ldmia sp!, {r4-r10, pc} @ return | |
| @ OpenSSL contains aes_nohw_* fallback code here. We patch this | |
| @ out to retain a constant-time implementation. | |
| .size bsaes_ctr32_encrypt_blocks,.-bsaes_ctr32_encrypt_blocks | |
| ___ | |
| } | |
| # In BorinSSL, we patch XTS support out. | |
| if (0) { | |
| ###################################################################### | |
| # void bsaes_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 ($inp,$out,$len,$key,$rounds,$magic,$fp)=(map("r$_",(7..10,1..3))); | |
| my $const="r6"; # returned by _bsaes_key_convert | |
| my $twmask=@XMM[5]; | |
| my @T=@XMM[6..7]; | |
| $code.=<<___; | |
| .globl bsaes_xts_encrypt | |
| .type bsaes_xts_encrypt,%function | |
| .align 4 | |
| bsaes_xts_encrypt: | |
| mov ip, sp | |
| stmdb sp!, {r4-r10, lr} @ 0x20 | |
| VFP_ABI_PUSH | |
| mov r6, sp @ future $fp | |
| mov $inp, r0 | |
| mov $out, r1 | |
| mov $len, r2 | |
| mov $key, r3 | |
| sub r0, sp, #0x10 @ 0x10 | |
| bic r0, #0xf @ align at 16 bytes | |
| mov sp, r0 | |
| #ifdef XTS_CHAIN_TWEAK | |
| ldr r0, [ip] @ pointer to input tweak | |
| #else | |
| @ generate initial tweak | |
| ldr r0, [ip, #4] @ iv[] | |
| mov r1, sp | |
| ldr r2, [ip, #0] @ key2 | |
| bl aes_nohw_encrypt | |
| mov r0,sp @ pointer to initial tweak | |
| #endif | |
| ldr $rounds, [$key, #240] @ get # of rounds | |
| mov $fp, r6 | |
| #ifndef BSAES_ASM_EXTENDED_KEY | |
| @ allocate the key schedule on the stack | |
| sub r12, sp, $rounds, lsl#7 @ 128 bytes per inner round key | |
| @ add r12, #`128-32` @ size of bit-sliced key schedule | |
| sub r12, #`32+16` @ place for tweak[9] | |
| @ populate the key schedule | |
| mov r4, $key @ pass key | |
| mov r5, $rounds @ pass # of rounds | |
| mov sp, r12 | |
| add r12, #0x90 @ pass key schedule | |
| bl _bsaes_key_convert | |
| veor @XMM[7], @XMM[7], @XMM[15] @ fix up last round key | |
| vstmia r12, {@XMM[7]} @ save last round key | |
| #else | |
| ldr r12, [$key, #244] | |
| eors r12, #1 | |
| beq 0f | |
| str r12, [$key, #244] | |
| mov r4, $key @ pass key | |
| mov r5, $rounds @ pass # of rounds | |
| add r12, $key, #248 @ pass key schedule | |
| bl _bsaes_key_convert | |
| veor @XMM[7], @XMM[7], @XMM[15] @ fix up last round key | |
| vstmia r12, {@XMM[7]} | |
| .align 2 | |
| 0: sub sp, #0x90 @ place for tweak[9] | |
| #endif | |
| vld1.8 {@XMM[8]}, [r0] @ initial tweak | |
| adr $magic, .Lxts_magic | |
| subs $len, #0x80 | |
| blo .Lxts_enc_short | |
| b .Lxts_enc_loop | |
| .align 4 | |
| .Lxts_enc_loop: | |
| vldmia $magic, {$twmask} @ load XTS magic | |
| vshr.s64 @T[0], @XMM[8], #63 | |
| mov r0, sp | |
| vand @T[0], @T[0], $twmask | |
| ___ | |
| for($i=9;$i<16;$i++) { | |
| $code.=<<___; | |
| vadd.u64 @XMM[$i], @XMM[$i-1], @XMM[$i-1] | |
| vst1.64 {@XMM[$i-1]}, [r0,:128]! | |
| vswp `&Dhi("@T[0]")`,`&Dlo("@T[0]")` | |
| vshr.s64 @T[1], @XMM[$i], #63 | |
| veor @XMM[$i], @XMM[$i], @T[0] | |
| vand @T[1], @T[1], $twmask | |
| ___ | |
| @T=reverse(@T); | |
| $code.=<<___ if ($i>=10); | |
| vld1.8 {@XMM[$i-10]}, [$inp]! | |
| ___ | |
| $code.=<<___ if ($i>=11); | |
| veor @XMM[$i-11], @XMM[$i-11], @XMM[$i-3] | |
| ___ | |
| } | |
| $code.=<<___; | |
| vadd.u64 @XMM[8], @XMM[15], @XMM[15] | |
| vst1.64 {@XMM[15]}, [r0,:128]! | |
| vswp `&Dhi("@T[0]")`,`&Dlo("@T[0]")` | |
| veor @XMM[8], @XMM[8], @T[0] | |
| vst1.64 {@XMM[8]}, [r0,:128] @ next round tweak | |
| vld1.8 {@XMM[6]-@XMM[7]}, [$inp]! | |
| veor @XMM[5], @XMM[5], @XMM[13] | |
| #ifndef BSAES_ASM_EXTENDED_KEY | |
| add r4, sp, #0x90 @ pass key schedule | |
| #else | |
| add r4, $key, #248 @ pass key schedule | |
| #endif | |
| veor @XMM[6], @XMM[6], @XMM[14] | |
| mov r5, $rounds @ pass rounds | |
| veor @XMM[7], @XMM[7], @XMM[15] | |
| mov r0, sp | |
| bl _bsaes_encrypt8 | |
| vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! | |
| vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | |
| veor @XMM[0], @XMM[0], @XMM[ 8] | |
| vld1.64 {@XMM[12]-@XMM[13]}, [r0,:128]! | |
| veor @XMM[1], @XMM[1], @XMM[ 9] | |
| veor @XMM[8], @XMM[4], @XMM[10] | |
| vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
| veor @XMM[9], @XMM[6], @XMM[11] | |
| vld1.64 {@XMM[14]-@XMM[15]}, [r0,:128]! | |
| veor @XMM[10], @XMM[3], @XMM[12] | |
| vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | |
| veor @XMM[11], @XMM[7], @XMM[13] | |
| veor @XMM[12], @XMM[2], @XMM[14] | |
| vst1.8 {@XMM[10]-@XMM[11]}, [$out]! | |
| veor @XMM[13], @XMM[5], @XMM[15] | |
| vst1.8 {@XMM[12]-@XMM[13]}, [$out]! | |
| vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | |
| subs $len, #0x80 | |
| bpl .Lxts_enc_loop | |
| .Lxts_enc_short: | |
| adds $len, #0x70 | |
| bmi .Lxts_enc_done | |
| vldmia $magic, {$twmask} @ load XTS magic | |
| vshr.s64 @T[0], @XMM[8], #63 | |
| mov r0, sp | |
| vand @T[0], @T[0], $twmask | |
| ___ | |
| for($i=9;$i<16;$i++) { | |
| $code.=<<___; | |
| vadd.u64 @XMM[$i], @XMM[$i-1], @XMM[$i-1] | |
| vst1.64 {@XMM[$i-1]}, [r0,:128]! | |
| vswp `&Dhi("@T[0]")`,`&Dlo("@T[0]")` | |
| vshr.s64 @T[1], @XMM[$i], #63 | |
| veor @XMM[$i], @XMM[$i], @T[0] | |
| vand @T[1], @T[1], $twmask | |
| ___ | |
| @T=reverse(@T); | |
| $code.=<<___ if ($i>=10); | |
| vld1.8 {@XMM[$i-10]}, [$inp]! | |
| subs $len, #0x10 | |
| bmi .Lxts_enc_`$i-9` | |
| ___ | |
| $code.=<<___ if ($i>=11); | |
| veor @XMM[$i-11], @XMM[$i-11], @XMM[$i-3] | |
| ___ | |
| } | |
| $code.=<<___; | |
| sub $len, #0x10 | |
| vst1.64 {@XMM[15]}, [r0,:128] @ next round tweak | |
| vld1.8 {@XMM[6]}, [$inp]! | |
| veor @XMM[5], @XMM[5], @XMM[13] | |
| #ifndef BSAES_ASM_EXTENDED_KEY | |
| add r4, sp, #0x90 @ pass key schedule | |
| #else | |
| add r4, $key, #248 @ pass key schedule | |
| #endif | |
| veor @XMM[6], @XMM[6], @XMM[14] | |
| mov r5, $rounds @ pass rounds | |
| mov r0, sp | |
| bl _bsaes_encrypt8 | |
| vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! | |
| vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | |
| veor @XMM[0], @XMM[0], @XMM[ 8] | |
| vld1.64 {@XMM[12]-@XMM[13]}, [r0,:128]! | |
| veor @XMM[1], @XMM[1], @XMM[ 9] | |
| veor @XMM[8], @XMM[4], @XMM[10] | |
| vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
| veor @XMM[9], @XMM[6], @XMM[11] | |
| vld1.64 {@XMM[14]}, [r0,:128]! | |
| veor @XMM[10], @XMM[3], @XMM[12] | |
| vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | |
| veor @XMM[11], @XMM[7], @XMM[13] | |
| veor @XMM[12], @XMM[2], @XMM[14] | |
| vst1.8 {@XMM[10]-@XMM[11]}, [$out]! | |
| vst1.8 {@XMM[12]}, [$out]! | |
| vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | |
| b .Lxts_enc_done | |
| .align 4 | |
| .Lxts_enc_6: | |
| veor @XMM[4], @XMM[4], @XMM[12] | |
| #ifndef BSAES_ASM_EXTENDED_KEY | |
| add r4, sp, #0x90 @ pass key schedule | |
| #else | |
| add r4, $key, #248 @ pass key schedule | |
| #endif | |
| veor @XMM[5], @XMM[5], @XMM[13] | |
| mov r5, $rounds @ pass rounds | |
| mov r0, sp | |
| bl _bsaes_encrypt8 | |
| vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! | |
| vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | |
| veor @XMM[0], @XMM[0], @XMM[ 8] | |
| vld1.64 {@XMM[12]-@XMM[13]}, [r0,:128]! | |
| veor @XMM[1], @XMM[1], @XMM[ 9] | |
| veor @XMM[8], @XMM[4], @XMM[10] | |
| vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
| veor @XMM[9], @XMM[6], @XMM[11] | |
| veor @XMM[10], @XMM[3], @XMM[12] | |
| vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | |
| veor @XMM[11], @XMM[7], @XMM[13] | |
| vst1.8 {@XMM[10]-@XMM[11]}, [$out]! | |
| vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | |
| b .Lxts_enc_done | |
| @ put this in range for both ARM and Thumb mode adr instructions | |
| .align 5 | |
| .Lxts_magic: | |
| .quad 1, 0x87 | |
| .align 5 | |
| .Lxts_enc_5: | |
| veor @XMM[3], @XMM[3], @XMM[11] | |
| #ifndef BSAES_ASM_EXTENDED_KEY | |
| add r4, sp, #0x90 @ pass key schedule | |
| #else | |
| add r4, $key, #248 @ pass key schedule | |
| #endif | |
| veor @XMM[4], @XMM[4], @XMM[12] | |
| mov r5, $rounds @ pass rounds | |
| mov r0, sp | |
| bl _bsaes_encrypt8 | |
| vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! | |
| vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | |
| veor @XMM[0], @XMM[0], @XMM[ 8] | |
| vld1.64 {@XMM[12]}, [r0,:128]! | |
| veor @XMM[1], @XMM[1], @XMM[ 9] | |
| veor @XMM[8], @XMM[4], @XMM[10] | |
| vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
| veor @XMM[9], @XMM[6], @XMM[11] | |
| veor @XMM[10], @XMM[3], @XMM[12] | |
| vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | |
| vst1.8 {@XMM[10]}, [$out]! | |
| vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | |
| b .Lxts_enc_done | |
| .align 4 | |
| .Lxts_enc_4: | |
| veor @XMM[2], @XMM[2], @XMM[10] | |
| #ifndef BSAES_ASM_EXTENDED_KEY | |
| add r4, sp, #0x90 @ pass key schedule | |
| #else | |
| add r4, $key, #248 @ pass key schedule | |
| #endif | |
| veor @XMM[3], @XMM[3], @XMM[11] | |
| mov r5, $rounds @ pass rounds | |
| mov r0, sp | |
| bl _bsaes_encrypt8 | |
| vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! | |
| vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | |
| veor @XMM[0], @XMM[0], @XMM[ 8] | |
| veor @XMM[1], @XMM[1], @XMM[ 9] | |
| veor @XMM[8], @XMM[4], @XMM[10] | |
| vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
| veor @XMM[9], @XMM[6], @XMM[11] | |
| vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | |
| vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | |
| b .Lxts_enc_done | |
| .align 4 | |
| .Lxts_enc_3: | |
| veor @XMM[1], @XMM[1], @XMM[9] | |
| #ifndef BSAES_ASM_EXTENDED_KEY | |
| add r4, sp, #0x90 @ pass key schedule | |
| #else | |
| add r4, $key, #248 @ pass key schedule | |
| #endif | |
| veor @XMM[2], @XMM[2], @XMM[10] | |
| mov r5, $rounds @ pass rounds | |
| mov r0, sp | |
| bl _bsaes_encrypt8 | |
| vld1.64 {@XMM[8]-@XMM[9]}, [r0,:128]! | |
| vld1.64 {@XMM[10]}, [r0,:128]! | |
| veor @XMM[0], @XMM[0], @XMM[ 8] | |
| veor @XMM[1], @XMM[1], @XMM[ 9] | |
| veor @XMM[8], @XMM[4], @XMM[10] | |
| vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
| vst1.8 {@XMM[8]}, [$out]! | |
| vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | |
| b .Lxts_enc_done | |
| .align 4 | |
| .Lxts_enc_2: | |
| veor @XMM[0], @XMM[0], @XMM[8] | |
| #ifndef BSAES_ASM_EXTENDED_KEY | |
| add r4, sp, #0x90 @ pass key schedule | |
| #else | |
| add r4, $key, #248 @ pass key schedule | |
| #endif | |
| veor @XMM[1], @XMM[1], @XMM[9] | |
| mov r5, $rounds @ pass rounds | |
| mov r0, sp | |
| bl _bsaes_encrypt8 | |
| vld1.64 {@XMM[8]-@XMM[9]}, [r0,:128]! | |
| veor @XMM[0], @XMM[0], @XMM[ 8] | |
| veor @XMM[1], @XMM[1], @XMM[ 9] | |
| vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
| vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | |
| b .Lxts_enc_done | |
| .align 4 | |
| .Lxts_enc_1: | |
| mov r0, sp | |
| veor @XMM[0], @XMM[0], @XMM[8] | |
| mov r1, sp | |
| vst1.8 {@XMM[0]}, [sp,:128] | |
| mov r2, $key | |
| mov r4, $fp @ preserve fp | |
| bl aes_nohw_encrypt | |
| vld1.8 {@XMM[0]}, [sp,:128] | |
| veor @XMM[0], @XMM[0], @XMM[8] | |
| vst1.8 {@XMM[0]}, [$out]! | |
| mov $fp, r4 | |
| vmov @XMM[8], @XMM[9] @ next round tweak | |
| .Lxts_enc_done: | |
| #ifndef XTS_CHAIN_TWEAK | |
| adds $len, #0x10 | |
| beq .Lxts_enc_ret | |
| sub r6, $out, #0x10 | |
| .Lxts_enc_steal: | |
| ldrb r0, [$inp], #1 | |
| ldrb r1, [$out, #-0x10] | |
| strb r0, [$out, #-0x10] | |
| strb r1, [$out], #1 | |
| subs $len, #1 | |
| bhi .Lxts_enc_steal | |
| vld1.8 {@XMM[0]}, [r6] | |
| mov r0, sp | |
| veor @XMM[0], @XMM[0], @XMM[8] | |
| mov r1, sp | |
| vst1.8 {@XMM[0]}, [sp,:128] | |
| mov r2, $key | |
| mov r4, $fp @ preserve fp | |
| bl aes_nohw_encrypt | |
| vld1.8 {@XMM[0]}, [sp,:128] | |
| veor @XMM[0], @XMM[0], @XMM[8] | |
| vst1.8 {@XMM[0]}, [r6] | |
| mov $fp, r4 | |
| #endif | |
| .Lxts_enc_ret: | |
| bic r0, $fp, #0xf | |
| vmov.i32 q0, #0 | |
| vmov.i32 q1, #0 | |
| #ifdef XTS_CHAIN_TWEAK | |
| ldr r1, [$fp, #0x20+VFP_ABI_FRAME] @ chain tweak | |
| #endif | |
| .Lxts_enc_bzero: @ wipe key schedule [if any] | |
| vstmia sp!, {q0-q1} | |
| cmp sp, r0 | |
| bne .Lxts_enc_bzero | |
| mov sp, $fp | |
| #ifdef XTS_CHAIN_TWEAK | |
| vst1.8 {@XMM[8]}, [r1] | |
| #endif | |
| VFP_ABI_POP | |
| ldmia sp!, {r4-r10, pc} @ return | |
| .size bsaes_xts_encrypt,.-bsaes_xts_encrypt | |
| .globl bsaes_xts_decrypt | |
| .type bsaes_xts_decrypt,%function | |
| .align 4 | |
| bsaes_xts_decrypt: | |
| mov ip, sp | |
| stmdb sp!, {r4-r10, lr} @ 0x20 | |
| VFP_ABI_PUSH | |
| mov r6, sp @ future $fp | |
| mov $inp, r0 | |
| mov $out, r1 | |
| mov $len, r2 | |
| mov $key, r3 | |
| sub r0, sp, #0x10 @ 0x10 | |
| bic r0, #0xf @ align at 16 bytes | |
| mov sp, r0 | |
| #ifdef XTS_CHAIN_TWEAK | |
| ldr r0, [ip] @ pointer to input tweak | |
| #else | |
| @ generate initial tweak | |
| ldr r0, [ip, #4] @ iv[] | |
| mov r1, sp | |
| ldr r2, [ip, #0] @ key2 | |
| bl aes_nohw_encrypt | |
| mov r0, sp @ pointer to initial tweak | |
| #endif | |
| ldr $rounds, [$key, #240] @ get # of rounds | |
| mov $fp, r6 | |
| #ifndef BSAES_ASM_EXTENDED_KEY | |
| @ allocate the key schedule on the stack | |
| sub r12, sp, $rounds, lsl#7 @ 128 bytes per inner round key | |
| @ add r12, #`128-32` @ size of bit-sliced key schedule | |
| sub r12, #`32+16` @ place for tweak[9] | |
| @ populate the key schedule | |
| mov r4, $key @ pass key | |
| mov r5, $rounds @ pass # of rounds | |
| mov sp, r12 | |
| add r12, #0x90 @ pass key schedule | |
| bl _bsaes_key_convert | |
| add r4, sp, #0x90 | |
| vldmia r4, {@XMM[6]} | |
| vstmia r12, {@XMM[15]} @ save last round key | |
| veor @XMM[7], @XMM[7], @XMM[6] @ fix up round 0 key | |
| vstmia r4, {@XMM[7]} | |
| #else | |
| ldr r12, [$key, #244] | |
| eors r12, #1 | |
| beq 0f | |
| str r12, [$key, #244] | |
| mov r4, $key @ pass key | |
| mov r5, $rounds @ pass # of rounds | |
| add r12, $key, #248 @ pass key schedule | |
| bl _bsaes_key_convert | |
| add r4, $key, #248 | |
| vldmia r4, {@XMM[6]} | |
| vstmia r12, {@XMM[15]} @ save last round key | |
| veor @XMM[7], @XMM[7], @XMM[6] @ fix up round 0 key | |
| vstmia r4, {@XMM[7]} | |
| .align 2 | |
| 0: sub sp, #0x90 @ place for tweak[9] | |
| #endif | |
| vld1.8 {@XMM[8]}, [r0] @ initial tweak | |
| adr $magic, .Lxts_magic | |
| #ifndef XTS_CHAIN_TWEAK | |
| tst $len, #0xf @ if not multiple of 16 | |
| it ne @ Thumb2 thing, sanity check in ARM | |
| subne $len, #0x10 @ subtract another 16 bytes | |
| #endif | |
| subs $len, #0x80 | |
| blo .Lxts_dec_short | |
| b .Lxts_dec_loop | |
| .align 4 | |
| .Lxts_dec_loop: | |
| vldmia $magic, {$twmask} @ load XTS magic | |
| vshr.s64 @T[0], @XMM[8], #63 | |
| mov r0, sp | |
| vand @T[0], @T[0], $twmask | |
| ___ | |
| for($i=9;$i<16;$i++) { | |
| $code.=<<___; | |
| vadd.u64 @XMM[$i], @XMM[$i-1], @XMM[$i-1] | |
| vst1.64 {@XMM[$i-1]}, [r0,:128]! | |
| vswp `&Dhi("@T[0]")`,`&Dlo("@T[0]")` | |
| vshr.s64 @T[1], @XMM[$i], #63 | |
| veor @XMM[$i], @XMM[$i], @T[0] | |
| vand @T[1], @T[1], $twmask | |
| ___ | |
| @T=reverse(@T); | |
| $code.=<<___ if ($i>=10); | |
| vld1.8 {@XMM[$i-10]}, [$inp]! | |
| ___ | |
| $code.=<<___ if ($i>=11); | |
| veor @XMM[$i-11], @XMM[$i-11], @XMM[$i-3] | |
| ___ | |
| } | |
| $code.=<<___; | |
| vadd.u64 @XMM[8], @XMM[15], @XMM[15] | |
| vst1.64 {@XMM[15]}, [r0,:128]! | |
| vswp `&Dhi("@T[0]")`,`&Dlo("@T[0]")` | |
| veor @XMM[8], @XMM[8], @T[0] | |
| vst1.64 {@XMM[8]}, [r0,:128] @ next round tweak | |
| vld1.8 {@XMM[6]-@XMM[7]}, [$inp]! | |
| veor @XMM[5], @XMM[5], @XMM[13] | |
| #ifndef BSAES_ASM_EXTENDED_KEY | |
| add r4, sp, #0x90 @ pass key schedule | |
| #else | |
| add r4, $key, #248 @ pass key schedule | |
| #endif | |
| veor @XMM[6], @XMM[6], @XMM[14] | |
| mov r5, $rounds @ pass rounds | |
| veor @XMM[7], @XMM[7], @XMM[15] | |
| mov r0, sp | |
| bl _bsaes_decrypt8 | |
| vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! | |
| vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | |
| veor @XMM[0], @XMM[0], @XMM[ 8] | |
| vld1.64 {@XMM[12]-@XMM[13]}, [r0,:128]! | |
| veor @XMM[1], @XMM[1], @XMM[ 9] | |
| veor @XMM[8], @XMM[6], @XMM[10] | |
| vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
| veor @XMM[9], @XMM[4], @XMM[11] | |
| vld1.64 {@XMM[14]-@XMM[15]}, [r0,:128]! | |
| veor @XMM[10], @XMM[2], @XMM[12] | |
| vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | |
| veor @XMM[11], @XMM[7], @XMM[13] | |
| veor @XMM[12], @XMM[3], @XMM[14] | |
| vst1.8 {@XMM[10]-@XMM[11]}, [$out]! | |
| veor @XMM[13], @XMM[5], @XMM[15] | |
| vst1.8 {@XMM[12]-@XMM[13]}, [$out]! | |
| vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | |
| subs $len, #0x80 | |
| bpl .Lxts_dec_loop | |
| .Lxts_dec_short: | |
| adds $len, #0x70 | |
| bmi .Lxts_dec_done | |
| vldmia $magic, {$twmask} @ load XTS magic | |
| vshr.s64 @T[0], @XMM[8], #63 | |
| mov r0, sp | |
| vand @T[0], @T[0], $twmask | |
| ___ | |
| for($i=9;$i<16;$i++) { | |
| $code.=<<___; | |
| vadd.u64 @XMM[$i], @XMM[$i-1], @XMM[$i-1] | |
| vst1.64 {@XMM[$i-1]}, [r0,:128]! | |
| vswp `&Dhi("@T[0]")`,`&Dlo("@T[0]")` | |
| vshr.s64 @T[1], @XMM[$i], #63 | |
| veor @XMM[$i], @XMM[$i], @T[0] | |
| vand @T[1], @T[1], $twmask | |
| ___ | |
| @T=reverse(@T); | |
| $code.=<<___ if ($i>=10); | |
| vld1.8 {@XMM[$i-10]}, [$inp]! | |
| subs $len, #0x10 | |
| bmi .Lxts_dec_`$i-9` | |
| ___ | |
| $code.=<<___ if ($i>=11); | |
| veor @XMM[$i-11], @XMM[$i-11], @XMM[$i-3] | |
| ___ | |
| } | |
| $code.=<<___; | |
| sub $len, #0x10 | |
| vst1.64 {@XMM[15]}, [r0,:128] @ next round tweak | |
| vld1.8 {@XMM[6]}, [$inp]! | |
| veor @XMM[5], @XMM[5], @XMM[13] | |
| #ifndef BSAES_ASM_EXTENDED_KEY | |
| add r4, sp, #0x90 @ pass key schedule | |
| #else | |
| add r4, $key, #248 @ pass key schedule | |
| #endif | |
| veor @XMM[6], @XMM[6], @XMM[14] | |
| mov r5, $rounds @ pass rounds | |
| mov r0, sp | |
| bl _bsaes_decrypt8 | |
| vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! | |
| vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | |
| veor @XMM[0], @XMM[0], @XMM[ 8] | |
| vld1.64 {@XMM[12]-@XMM[13]}, [r0,:128]! | |
| veor @XMM[1], @XMM[1], @XMM[ 9] | |
| veor @XMM[8], @XMM[6], @XMM[10] | |
| vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
| veor @XMM[9], @XMM[4], @XMM[11] | |
| vld1.64 {@XMM[14]}, [r0,:128]! | |
| veor @XMM[10], @XMM[2], @XMM[12] | |
| vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | |
| veor @XMM[11], @XMM[7], @XMM[13] | |
| veor @XMM[12], @XMM[3], @XMM[14] | |
| vst1.8 {@XMM[10]-@XMM[11]}, [$out]! | |
| vst1.8 {@XMM[12]}, [$out]! | |
| vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | |
| b .Lxts_dec_done | |
| .align 4 | |
| .Lxts_dec_6: | |
| vst1.64 {@XMM[14]}, [r0,:128] @ next round tweak | |
| veor @XMM[4], @XMM[4], @XMM[12] | |
| #ifndef BSAES_ASM_EXTENDED_KEY | |
| add r4, sp, #0x90 @ pass key schedule | |
| #else | |
| add r4, $key, #248 @ pass key schedule | |
| #endif | |
| veor @XMM[5], @XMM[5], @XMM[13] | |
| mov r5, $rounds @ pass rounds | |
| mov r0, sp | |
| bl _bsaes_decrypt8 | |
| vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! | |
| vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | |
| veor @XMM[0], @XMM[0], @XMM[ 8] | |
| vld1.64 {@XMM[12]-@XMM[13]}, [r0,:128]! | |
| veor @XMM[1], @XMM[1], @XMM[ 9] | |
| veor @XMM[8], @XMM[6], @XMM[10] | |
| vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
| veor @XMM[9], @XMM[4], @XMM[11] | |
| veor @XMM[10], @XMM[2], @XMM[12] | |
| vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | |
| veor @XMM[11], @XMM[7], @XMM[13] | |
| vst1.8 {@XMM[10]-@XMM[11]}, [$out]! | |
| vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | |
| b .Lxts_dec_done | |
| .align 4 | |
| .Lxts_dec_5: | |
| veor @XMM[3], @XMM[3], @XMM[11] | |
| #ifndef BSAES_ASM_EXTENDED_KEY | |
| add r4, sp, #0x90 @ pass key schedule | |
| #else | |
| add r4, $key, #248 @ pass key schedule | |
| #endif | |
| veor @XMM[4], @XMM[4], @XMM[12] | |
| mov r5, $rounds @ pass rounds | |
| mov r0, sp | |
| bl _bsaes_decrypt8 | |
| vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! | |
| vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | |
| veor @XMM[0], @XMM[0], @XMM[ 8] | |
| vld1.64 {@XMM[12]}, [r0,:128]! | |
| veor @XMM[1], @XMM[1], @XMM[ 9] | |
| veor @XMM[8], @XMM[6], @XMM[10] | |
| vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
| veor @XMM[9], @XMM[4], @XMM[11] | |
| veor @XMM[10], @XMM[2], @XMM[12] | |
| vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | |
| vst1.8 {@XMM[10]}, [$out]! | |
| vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | |
| b .Lxts_dec_done | |
| .align 4 | |
| .Lxts_dec_4: | |
| veor @XMM[2], @XMM[2], @XMM[10] | |
| #ifndef BSAES_ASM_EXTENDED_KEY | |
| add r4, sp, #0x90 @ pass key schedule | |
| #else | |
| add r4, $key, #248 @ pass key schedule | |
| #endif | |
| veor @XMM[3], @XMM[3], @XMM[11] | |
| mov r5, $rounds @ pass rounds | |
| mov r0, sp | |
| bl _bsaes_decrypt8 | |
| vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! | |
| vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | |
| veor @XMM[0], @XMM[0], @XMM[ 8] | |
| veor @XMM[1], @XMM[1], @XMM[ 9] | |
| veor @XMM[8], @XMM[6], @XMM[10] | |
| vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
| veor @XMM[9], @XMM[4], @XMM[11] | |
| vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | |
| vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | |
| b .Lxts_dec_done | |
| .align 4 | |
| .Lxts_dec_3: | |
| veor @XMM[1], @XMM[1], @XMM[9] | |
| #ifndef BSAES_ASM_EXTENDED_KEY | |
| add r4, sp, #0x90 @ pass key schedule | |
| #else | |
| add r4, $key, #248 @ pass key schedule | |
| #endif | |
| veor @XMM[2], @XMM[2], @XMM[10] | |
| mov r5, $rounds @ pass rounds | |
| mov r0, sp | |
| bl _bsaes_decrypt8 | |
| vld1.64 {@XMM[8]-@XMM[9]}, [r0,:128]! | |
| vld1.64 {@XMM[10]}, [r0,:128]! | |
| veor @XMM[0], @XMM[0], @XMM[ 8] | |
| veor @XMM[1], @XMM[1], @XMM[ 9] | |
| veor @XMM[8], @XMM[6], @XMM[10] | |
| vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
| vst1.8 {@XMM[8]}, [$out]! | |
| vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | |
| b .Lxts_dec_done | |
| .align 4 | |
| .Lxts_dec_2: | |
| veor @XMM[0], @XMM[0], @XMM[8] | |
| #ifndef BSAES_ASM_EXTENDED_KEY | |
| add r4, sp, #0x90 @ pass key schedule | |
| #else | |
| add r4, $key, #248 @ pass key schedule | |
| #endif | |
| veor @XMM[1], @XMM[1], @XMM[9] | |
| mov r5, $rounds @ pass rounds | |
| mov r0, sp | |
| bl _bsaes_decrypt8 | |
| vld1.64 {@XMM[8]-@XMM[9]}, [r0,:128]! | |
| veor @XMM[0], @XMM[0], @XMM[ 8] | |
| veor @XMM[1], @XMM[1], @XMM[ 9] | |
| vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | |
| vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | |
| b .Lxts_dec_done | |
| .align 4 | |
| .Lxts_dec_1: | |
| mov r0, sp | |
| veor @XMM[0], @XMM[0], @XMM[8] | |
| mov r1, sp | |
| vst1.8 {@XMM[0]}, [sp,:128] | |
| mov r5, $magic @ preserve magic | |
| mov r2, $key | |
| mov r4, $fp @ preserve fp | |
| bl aes_nohw_decrypt | |
| vld1.8 {@XMM[0]}, [sp,:128] | |
| veor @XMM[0], @XMM[0], @XMM[8] | |
| vst1.8 {@XMM[0]}, [$out]! | |
| mov $fp, r4 | |
| mov $magic, r5 | |
| vmov @XMM[8], @XMM[9] @ next round tweak | |
| .Lxts_dec_done: | |
| #ifndef XTS_CHAIN_TWEAK | |
| adds $len, #0x10 | |
| beq .Lxts_dec_ret | |
| @ calculate one round of extra tweak for the stolen ciphertext | |
| vldmia $magic, {$twmask} | |
| vshr.s64 @XMM[6], @XMM[8], #63 | |
| vand @XMM[6], @XMM[6], $twmask | |
| vadd.u64 @XMM[9], @XMM[8], @XMM[8] | |
| vswp `&Dhi("@XMM[6]")`,`&Dlo("@XMM[6]")` | |
| veor @XMM[9], @XMM[9], @XMM[6] | |
| @ perform the final decryption with the last tweak value | |
| vld1.8 {@XMM[0]}, [$inp]! | |
| mov r0, sp | |
| veor @XMM[0], @XMM[0], @XMM[9] | |
| mov r1, sp | |
| vst1.8 {@XMM[0]}, [sp,:128] | |
| mov r2, $key | |
| mov r4, $fp @ preserve fp | |
| bl aes_nohw_decrypt | |
| vld1.8 {@XMM[0]}, [sp,:128] | |
| veor @XMM[0], @XMM[0], @XMM[9] | |
| vst1.8 {@XMM[0]}, [$out] | |
| mov r6, $out | |
| .Lxts_dec_steal: | |
| ldrb r1, [$out] | |
| ldrb r0, [$inp], #1 | |
| strb r1, [$out, #0x10] | |
| strb r0, [$out], #1 | |
| subs $len, #1 | |
| bhi .Lxts_dec_steal | |
| vld1.8 {@XMM[0]}, [r6] | |
| mov r0, sp | |
| veor @XMM[0], @XMM[8] | |
| mov r1, sp | |
| vst1.8 {@XMM[0]}, [sp,:128] | |
| mov r2, $key | |
| bl aes_nohw_decrypt | |
| vld1.8 {@XMM[0]}, [sp,:128] | |
| veor @XMM[0], @XMM[0], @XMM[8] | |
| vst1.8 {@XMM[0]}, [r6] | |
| mov $fp, r4 | |
| #endif | |
| .Lxts_dec_ret: | |
| bic r0, $fp, #0xf | |
| vmov.i32 q0, #0 | |
| vmov.i32 q1, #0 | |
| #ifdef XTS_CHAIN_TWEAK | |
| ldr r1, [$fp, #0x20+VFP_ABI_FRAME] @ chain tweak | |
| #endif | |
| .Lxts_dec_bzero: @ wipe key schedule [if any] | |
| vstmia sp!, {q0-q1} | |
| cmp sp, r0 | |
| bne .Lxts_dec_bzero | |
| mov sp, $fp | |
| #ifdef XTS_CHAIN_TWEAK | |
| vst1.8 {@XMM[8]}, [r1] | |
| #endif | |
| VFP_ABI_POP | |
| ldmia sp!, {r4-r10, pc} @ return | |
| .size bsaes_xts_decrypt,.-bsaes_xts_decrypt | |
| ___ | |
| } | |
| $code.=<<___; | |
| #endif | |
| ___ | |
| $code =~ s/\`([^\`]*)\`/eval($1)/gem; | |
| open SELF,$0; | |
| while(<SELF>) { | |
| next if (/^#!/); | |
| last if (!s/^#/@/ and !/^$/); | |
| print; | |
| } | |
| close SELF; | |
| print $code; | |
| close STDOUT or die "error closing STDOUT: $!"; |