2516 lines
63 KiB
Perl
2516 lines
63 KiB
Perl
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#!/usr/bin/env perl
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# ====================================================================
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# Written by Andy Polyakov <appro@openssl.org> for the OpenSSL
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# project. The module is, however, dual licensed under OpenSSL and
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# CRYPTOGAMS licenses depending on where you obtain it. For further
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# details see http://www.openssl.org/~appro/cryptogams/.
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#
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# Specific modes and adaptation for Linux kernel by Ard Biesheuvel
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# <ard.biesheuvel@linaro.org>. Permission to use under GPL terms is
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# granted.
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# ====================================================================
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# Bit-sliced AES for ARM NEON
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#
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# February 2012.
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#
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# This implementation is direct adaptation of bsaes-x86_64 module for
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# ARM NEON. Except that this module is endian-neutral [in sense that
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# it can be compiled for either endianness] by courtesy of vld1.8's
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# neutrality. Initial version doesn't implement interface to OpenSSL,
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# only low-level primitives and unsupported entry points, just enough
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# to collect performance results, which for Cortex-A8 core are:
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#
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# encrypt 19.5 cycles per byte processed with 128-bit key
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# decrypt 22.1 cycles per byte processed with 128-bit key
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# key conv. 440 cycles per 128-bit key/0.18 of 8x block
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#
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# Snapdragon S4 encrypts byte in 17.6 cycles and decrypts in 19.7,
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# which is [much] worse than anticipated (for further details see
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# http://www.openssl.org/~appro/Snapdragon-S4.html).
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#
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# Cortex-A15 manages in 14.2/16.1 cycles [when integer-only code
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# manages in 20.0 cycles].
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#
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# When comparing to x86_64 results keep in mind that NEON unit is
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# [mostly] single-issue and thus can't [fully] benefit from
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# instruction-level parallelism. And when comparing to aes-armv4
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# results keep in mind key schedule conversion overhead (see
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# bsaes-x86_64.pl for further details)...
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#
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# <appro@openssl.org>
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# April-August 2013
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#
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# Add CBC, CTR and XTS subroutines, adapt for kernel use.
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#
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# <ard.biesheuvel@linaro.org>
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$flavour = shift;
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if ($flavour=~/^\w[\w\-]*\.\w+$/) { $output=$flavour; undef $flavour; }
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else { while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {} }
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if ($flavour && $flavour ne "void") {
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$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
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( $xlate="${dir}arm-xlate.pl" and -f $xlate ) or
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( $xlate="${dir}../../perlasm/arm-xlate.pl" and -f $xlate) or
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die "can't locate arm-xlate.pl";
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open STDOUT,"| \"$^X\" $xlate $flavour $output";
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} else {
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open STDOUT,">$output";
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}
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my ($inp,$out,$len,$key)=("r0","r1","r2","r3");
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my @XMM=map("q$_",(0..15));
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{
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my ($key,$rounds,$const)=("r4","r5","r6");
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sub Dlo() { shift=~m|q([1]?[0-9])|?"d".($1*2):""; }
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sub Dhi() { shift=~m|q([1]?[0-9])|?"d".($1*2+1):""; }
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sub Sbox {
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# input in lsb > [b0, b1, b2, b3, b4, b5, b6, b7] < msb
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# output in lsb > [b0, b1, b4, b6, b3, b7, b2, b5] < msb
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my @b=@_[0..7];
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my @t=@_[8..11];
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my @s=@_[12..15];
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&InBasisChange (@b);
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&Inv_GF256 (@b[6,5,0,3,7,1,4,2],@t,@s);
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&OutBasisChange (@b[7,1,4,2,6,5,0,3]);
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}
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sub InBasisChange {
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# input in lsb > [b0, b1, b2, b3, b4, b5, b6, b7] < msb
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# output in lsb > [b6, b5, b0, b3, b7, b1, b4, b2] < msb
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my @b=@_[0..7];
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$code.=<<___;
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veor @b[2], @b[2], @b[1]
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veor @b[5], @b[5], @b[6]
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veor @b[3], @b[3], @b[0]
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veor @b[6], @b[6], @b[2]
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veor @b[5], @b[5], @b[0]
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veor @b[6], @b[6], @b[3]
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veor @b[3], @b[3], @b[7]
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veor @b[7], @b[7], @b[5]
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veor @b[3], @b[3], @b[4]
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veor @b[4], @b[4], @b[5]
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veor @b[2], @b[2], @b[7]
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veor @b[3], @b[3], @b[1]
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veor @b[1], @b[1], @b[5]
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___
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}
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sub OutBasisChange {
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# input in lsb > [b0, b1, b2, b3, b4, b5, b6, b7] < msb
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# output in lsb > [b6, b1, b2, b4, b7, b0, b3, b5] < msb
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my @b=@_[0..7];
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$code.=<<___;
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veor @b[0], @b[0], @b[6]
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veor @b[1], @b[1], @b[4]
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veor @b[4], @b[4], @b[6]
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veor @b[2], @b[2], @b[0]
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veor @b[6], @b[6], @b[1]
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veor @b[1], @b[1], @b[5]
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veor @b[5], @b[5], @b[3]
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veor @b[3], @b[3], @b[7]
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veor @b[7], @b[7], @b[5]
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veor @b[2], @b[2], @b[5]
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veor @b[4], @b[4], @b[7]
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___
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}
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sub InvSbox {
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# input in lsb > [b0, b1, b2, b3, b4, b5, b6, b7] < msb
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# output in lsb > [b0, b1, b6, b4, b2, b7, b3, b5] < msb
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my @b=@_[0..7];
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my @t=@_[8..11];
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my @s=@_[12..15];
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&InvInBasisChange (@b);
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&Inv_GF256 (@b[5,1,2,6,3,7,0,4],@t,@s);
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&InvOutBasisChange (@b[3,7,0,4,5,1,2,6]);
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}
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sub InvInBasisChange { # OutBasisChange in reverse (with twist)
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my @b=@_[5,1,2,6,3,7,0,4];
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$code.=<<___
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veor @b[1], @b[1], @b[7]
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veor @b[4], @b[4], @b[7]
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veor @b[7], @b[7], @b[5]
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veor @b[1], @b[1], @b[3]
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veor @b[2], @b[2], @b[5]
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veor @b[3], @b[3], @b[7]
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veor @b[6], @b[6], @b[1]
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veor @b[2], @b[2], @b[0]
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veor @b[5], @b[5], @b[3]
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veor @b[4], @b[4], @b[6]
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veor @b[0], @b[0], @b[6]
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veor @b[1], @b[1], @b[4]
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___
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}
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sub InvOutBasisChange { # InBasisChange in reverse
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my @b=@_[2,5,7,3,6,1,0,4];
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$code.=<<___;
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veor @b[1], @b[1], @b[5]
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veor @b[2], @b[2], @b[7]
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veor @b[3], @b[3], @b[1]
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veor @b[4], @b[4], @b[5]
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veor @b[7], @b[7], @b[5]
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veor @b[3], @b[3], @b[4]
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veor @b[5], @b[5], @b[0]
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veor @b[3], @b[3], @b[7]
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veor @b[6], @b[6], @b[2]
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veor @b[2], @b[2], @b[1]
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veor @b[6], @b[6], @b[3]
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veor @b[3], @b[3], @b[0]
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veor @b[5], @b[5], @b[6]
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___
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}
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sub Mul_GF4 {
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#;*************************************************************
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#;* Mul_GF4: Input x0-x1,y0-y1 Output x0-x1 Temp t0 (8) *
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#;*************************************************************
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my ($x0,$x1,$y0,$y1,$t0,$t1)=@_;
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$code.=<<___;
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veor $t0, $y0, $y1
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vand $t0, $t0, $x0
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veor $x0, $x0, $x1
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vand $t1, $x1, $y0
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vand $x0, $x0, $y1
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veor $x1, $t1, $t0
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veor $x0, $x0, $t1
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___
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}
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sub Mul_GF4_N { # not used, see next subroutine
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# multiply and scale by N
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my ($x0,$x1,$y0,$y1,$t0)=@_;
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$code.=<<___;
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veor $t0, $y0, $y1
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vand $t0, $t0, $x0
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veor $x0, $x0, $x1
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vand $x1, $x1, $y0
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vand $x0, $x0, $y1
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veor $x1, $x1, $x0
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veor $x0, $x0, $t0
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___
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}
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sub Mul_GF4_N_GF4 {
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# interleaved Mul_GF4_N and Mul_GF4
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my ($x0,$x1,$y0,$y1,$t0,
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$x2,$x3,$y2,$y3,$t1)=@_;
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$code.=<<___;
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veor $t0, $y0, $y1
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veor $t1, $y2, $y3
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vand $t0, $t0, $x0
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vand $t1, $t1, $x2
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veor $x0, $x0, $x1
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veor $x2, $x2, $x3
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vand $x1, $x1, $y0
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vand $x3, $x3, $y2
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vand $x0, $x0, $y1
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vand $x2, $x2, $y3
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veor $x1, $x1, $x0
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veor $x2, $x2, $x3
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veor $x0, $x0, $t0
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veor $x3, $x3, $t1
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___
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}
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sub Mul_GF16_2 {
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my @x=@_[0..7];
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my @y=@_[8..11];
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my @t=@_[12..15];
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$code.=<<___;
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veor @t[0], @x[0], @x[2]
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veor @t[1], @x[1], @x[3]
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___
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&Mul_GF4 (@x[0], @x[1], @y[0], @y[1], @t[2..3]);
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$code.=<<___;
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veor @y[0], @y[0], @y[2]
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veor @y[1], @y[1], @y[3]
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___
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Mul_GF4_N_GF4 (@t[0], @t[1], @y[0], @y[1], @t[3],
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@x[2], @x[3], @y[2], @y[3], @t[2]);
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$code.=<<___;
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veor @x[0], @x[0], @t[0]
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veor @x[2], @x[2], @t[0]
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veor @x[1], @x[1], @t[1]
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veor @x[3], @x[3], @t[1]
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veor @t[0], @x[4], @x[6]
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veor @t[1], @x[5], @x[7]
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___
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&Mul_GF4_N_GF4 (@t[0], @t[1], @y[0], @y[1], @t[3],
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@x[6], @x[7], @y[2], @y[3], @t[2]);
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$code.=<<___;
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veor @y[0], @y[0], @y[2]
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veor @y[1], @y[1], @y[3]
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___
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&Mul_GF4 (@x[4], @x[5], @y[0], @y[1], @t[2..3]);
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$code.=<<___;
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veor @x[4], @x[4], @t[0]
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veor @x[6], @x[6], @t[0]
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veor @x[5], @x[5], @t[1]
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veor @x[7], @x[7], @t[1]
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___
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}
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sub Inv_GF256 {
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#;********************************************************************
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#;* Inv_GF256: Input x0-x7 Output x0-x7 Temp t0-t3,s0-s3 (144) *
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#;********************************************************************
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my @x=@_[0..7];
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my @t=@_[8..11];
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my @s=@_[12..15];
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# direct optimizations from hardware
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$code.=<<___;
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veor @t[3], @x[4], @x[6]
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veor @t[2], @x[5], @x[7]
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veor @t[1], @x[1], @x[3]
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veor @s[1], @x[7], @x[6]
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vmov @t[0], @t[2]
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veor @s[0], @x[0], @x[2]
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vorr @t[2], @t[2], @t[1]
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veor @s[3], @t[3], @t[0]
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vand @s[2], @t[3], @s[0]
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vorr @t[3], @t[3], @s[0]
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veor @s[0], @s[0], @t[1]
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vand @t[0], @t[0], @t[1]
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veor @t[1], @x[3], @x[2]
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vand @s[3], @s[3], @s[0]
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vand @s[1], @s[1], @t[1]
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veor @t[1], @x[4], @x[5]
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veor @s[0], @x[1], @x[0]
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veor @t[3], @t[3], @s[1]
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veor @t[2], @t[2], @s[1]
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vand @s[1], @t[1], @s[0]
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vorr @t[1], @t[1], @s[0]
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veor @t[3], @t[3], @s[3]
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veor @t[0], @t[0], @s[1]
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veor @t[2], @t[2], @s[2]
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veor @t[1], @t[1], @s[3]
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veor @t[0], @t[0], @s[2]
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vand @s[0], @x[7], @x[3]
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veor @t[1], @t[1], @s[2]
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|
|
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.=<<___;
|
||
|
|
#if defined(__arm__)
|
||
|
|
#ifndef __KERNEL__
|
||
|
|
# include "arm_arch.h"
|
||
|
|
|
||
|
|
# 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_ARCH__ __LINUX_ARM_ARCH__
|
||
|
|
# 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
|
||
|
|
#endif
|
||
|
|
|
||
|
|
.type _bsaes_decrypt8,%function
|
||
|
|
.align 4
|
||
|
|
_bsaes_decrypt8:
|
||
|
|
adr $const,_bsaes_decrypt8
|
||
|
|
vldmia $key!, {@XMM[9]} @ round 0 key
|
||
|
|
#ifdef __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,_bsaes_encrypt8
|
||
|
|
vldmia $key!, {@XMM[9]} @ round 0 key
|
||
|
|
#ifdef __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 $const,_bsaes_key_convert
|
||
|
|
vld1.8 {@XMM[7]}, [$inp]! @ load round 0 key
|
||
|
|
#ifdef __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...
|
||
|
|
$code.=<<___;
|
||
|
|
.globl bsaes_enc_key_convert
|
||
|
|
.hidden bsaes_enc_key_convert
|
||
|
|
.type bsaes_enc_key_convert,%function
|
||
|
|
.align 4
|
||
|
|
bsaes_enc_key_convert:
|
||
|
|
stmdb sp!,{r4-r6,lr}
|
||
|
|
vstmdb sp!,{d8-d15} @ ABI specification says so
|
||
|
|
|
||
|
|
ldr r5,[$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
|
||
|
|
.hidden 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]}, [$out]!
|
||
|
|
bhi .Lenc128_loop
|
||
|
|
|
||
|
|
vldmia sp!,{d8-d15}
|
||
|
|
ldmia sp!,{r4-r6,pc}
|
||
|
|
.size bsaes_encrypt_128,.-bsaes_encrypt_128
|
||
|
|
|
||
|
|
.globl bsaes_dec_key_convert
|
||
|
|
.hidden bsaes_dec_key_convert
|
||
|
|
.type bsaes_dec_key_convert,%function
|
||
|
|
.align 4
|
||
|
|
bsaes_dec_key_convert:
|
||
|
|
stmdb sp!,{r4-r6,lr}
|
||
|
|
vstmdb sp!,{d8-d15} @ ABI specification says so
|
||
|
|
|
||
|
|
ldr r5,[$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 $out, {@XMM[7]}
|
||
|
|
|
||
|
|
vldmia sp!,{d8-d15}
|
||
|
|
ldmia sp!,{r4-r6,pc}
|
||
|
|
.size bsaes_dec_key_convert,.-bsaes_dec_key_convert
|
||
|
|
|
||
|
|
.globl bsaes_decrypt_128
|
||
|
|
.hidden bsaes_decrypt_128
|
||
|
|
.type bsaes_decrypt_128,%function
|
||
|
|
.align 4
|
||
|
|
bsaes_decrypt_128:
|
||
|
|
stmdb sp!,{r4-r6,lr}
|
||
|
|
vstmdb sp!,{d8-d15} @ ABI specification says so
|
||
|
|
.Ldec128_loop:
|
||
|
|
vld1.8 {@XMM[0]-@XMM[1]}, [$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.=<<___;
|
||
|
|
.extern AES_cbc_encrypt
|
||
|
|
.extern AES_decrypt
|
||
|
|
|
||
|
|
.global bsaes_cbc_encrypt
|
||
|
|
.hidden bsaes_cbc_encrypt
|
||
|
|
.type bsaes_cbc_encrypt,%function
|
||
|
|
.align 5
|
||
|
|
bsaes_cbc_encrypt:
|
||
|
|
#ifndef __KERNEL__
|
||
|
|
cmp $len, #128
|
||
|
|
#ifndef __thumb__
|
||
|
|
blo AES_cbc_encrypt
|
||
|
|
#else
|
||
|
|
bhs 1f
|
||
|
|
b AES_cbc_encrypt
|
||
|
|
1:
|
||
|
|
#endif
|
||
|
|
#endif
|
||
|
|
|
||
|
|
@ 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, $len, #8
|
||
|
|
beq .Lcbc_dec_done
|
||
|
|
|
||
|
|
vld1.8 {@XMM[0]}, [$inp]! @ load input
|
||
|
|
cmp $len, #2
|
||
|
|
blo .Lcbc_dec_one
|
||
|
|
vld1.8 {@XMM[1]}, [$inp]!
|
||
|
|
#ifndef BSAES_ASM_EXTENDED_KEY
|
||
|
|
mov r4, $keysched @ pass the key
|
||
|
|
#else
|
||
|
|
add r4, $key, #248
|
||
|
|
#endif
|
||
|
|
mov r5, $rounds
|
||
|
|
vstmia $fp, {@XMM[15]} @ put aside IV
|
||
|
|
beq .Lcbc_dec_two
|
||
|
|
vld1.8 {@XMM[2]}, [$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
|
||
|
|
mov $rounds, $out @ save original out pointer
|
||
|
|
mov $out, $fp @ use the iv scratch space as out buffer
|
||
|
|
mov r2, $key
|
||
|
|
vmov @XMM[4],@XMM[15] @ just in case ensure that IV
|
||
|
|
vmov @XMM[5],@XMM[0] @ and input are preserved
|
||
|
|
bl AES_decrypt
|
||
|
|
vld1.8 {@XMM[0]}, [$fp,:64] @ load result
|
||
|
|
veor @XMM[0], @XMM[0], @XMM[4] @ ^= IV
|
||
|
|
vmov @XMM[15], @XMM[5] @ @XMM[5] holds input
|
||
|
|
vst1.8 {@XMM[0]}, [$rounds] @ 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.=<<___;
|
||
|
|
.extern AES_encrypt
|
||
|
|
.global bsaes_ctr32_encrypt_blocks
|
||
|
|
.hidden bsaes_ctr32_encrypt_blocks
|
||
|
|
.type bsaes_ctr32_encrypt_blocks,%function
|
||
|
|
.align 5
|
||
|
|
bsaes_ctr32_encrypt_blocks:
|
||
|
|
cmp $len, #8 @ use plain AES for
|
||
|
|
blo .Lctr_enc_short @ small sizes
|
||
|
|
|
||
|
|
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
|
||
|
|
|
||
|
|
.align 4
|
||
|
|
.Lctr_enc_short:
|
||
|
|
ldr ip, [sp] @ ctr pointer is passed on stack
|
||
|
|
stmdb sp!, {r4-r8, lr}
|
||
|
|
|
||
|
|
mov r4, $inp @ copy arguments
|
||
|
|
mov r5, $out
|
||
|
|
mov r6, $len
|
||
|
|
mov r7, $key
|
||
|
|
ldr r8, [ip, #12] @ load counter LSW
|
||
|
|
vld1.8 {@XMM[1]}, [ip] @ load whole counter value
|
||
|
|
#ifdef __ARMEL__
|
||
|
|
rev r8, r8
|
||
|
|
#endif
|
||
|
|
sub sp, sp, #0x10
|
||
|
|
vst1.8 {@XMM[1]}, [sp] @ copy counter value
|
||
|
|
sub sp, sp, #0x10
|
||
|
|
|
||
|
|
.Lctr_enc_short_loop:
|
||
|
|
add r0, sp, #0x10 @ input counter value
|
||
|
|
mov r1, sp @ output on the stack
|
||
|
|
mov r2, r7 @ key
|
||
|
|
|
||
|
|
bl AES_encrypt
|
||
|
|
|
||
|
|
vld1.8 {@XMM[0]}, [r4]! @ load input
|
||
|
|
vld1.8 {@XMM[1]}, [sp] @ load encrypted counter
|
||
|
|
add r8, r8, #1
|
||
|
|
#ifdef __ARMEL__
|
||
|
|
rev r0, r8
|
||
|
|
str r0, [sp, #0x1c] @ next counter value
|
||
|
|
#else
|
||
|
|
str r8, [sp, #0x1c] @ next counter value
|
||
|
|
#endif
|
||
|
|
veor @XMM[0],@XMM[0],@XMM[1]
|
||
|
|
vst1.8 {@XMM[0]}, [r5]! @ store output
|
||
|
|
subs r6, r6, #1
|
||
|
|
bne .Lctr_enc_short_loop
|
||
|
|
|
||
|
|
vmov.i32 q0, #0
|
||
|
|
vmov.i32 q1, #0
|
||
|
|
vstmia sp!, {q0-q1}
|
||
|
|
|
||
|
|
ldmia sp!, {r4-r8, pc}
|
||
|
|
.size bsaes_ctr32_encrypt_blocks,.-bsaes_ctr32_encrypt_blocks
|
||
|
|
___
|
||
|
|
}
|
||
|
|
{
|
||
|
|
######################################################################
|
||
|
|
# void bsaes_xts_[en|de]crypt(const char *inp,char *out,size_t len,
|
||
|
|
# const AES_KEY *key1, const AES_KEY *key2,
|
||
|
|
# const unsigned char iv[16]);
|
||
|
|
#
|
||
|
|
my ($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
|
||
|
|
.hidden 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_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:
|
||
|
|
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, $rounds @ pass rounds
|
||
|
|
mov r0, sp
|
||
|
|
|
||
|
|
bl _bsaes_encrypt8
|
||
|
|
|
||
|
|
vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]!
|
||
|
|
vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]!
|
||
|
|
veor @XMM[0], @XMM[0], @XMM[ 8]
|
||
|
|
vld1.64 {@XMM[12]-@XMM[13]}, [r0,:128]!
|
||
|
|
veor @XMM[1], @XMM[1], @XMM[ 9]
|
||
|
|
veor @XMM[8], @XMM[4], @XMM[10]
|
||
|
|
vst1.8 {@XMM[0]-@XMM[1]}, [$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:
|
||
|
|
vst1.64 {@XMM[13]}, [r0,:128] @ next round tweak
|
||
|
|
|
||
|
|
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:
|
||
|
|
vst1.64 {@XMM[12]}, [r0,:128] @ next round tweak
|
||
|
|
|
||
|
|
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:
|
||
|
|
vst1.64 {@XMM[11]}, [r0,:128] @ next round tweak
|
||
|
|
|
||
|
|
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:
|
||
|
|
vst1.64 {@XMM[10]}, [r0,:128] @ next round tweak
|
||
|
|
|
||
|
|
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[8]
|
||
|
|
mov r1, sp
|
||
|
|
vst1.8 {@XMM[0]}, [sp,:128]
|
||
|
|
mov r2, $key
|
||
|
|
mov r4, $fp @ preserve fp
|
||
|
|
|
||
|
|
bl AES_encrypt
|
||
|
|
|
||
|
|
vld1.8 {@XMM[0]}, [sp,:128]
|
||
|
|
veor @XMM[0], @XMM[0], @XMM[8]
|
||
|
|
vst1.8 {@XMM[0]}, [$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_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
|
||
|
|
.hidden 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_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:
|
||
|
|
vst1.64 {@XMM[13]}, [r0,:128] @ next round tweak
|
||
|
|
|
||
|
|
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:
|
||
|
|
vst1.64 {@XMM[12]}, [r0,:128] @ next round tweak
|
||
|
|
|
||
|
|
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:
|
||
|
|
vst1.64 {@XMM[11]}, [r0,:128] @ next round tweak
|
||
|
|
|
||
|
|
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:
|
||
|
|
vst1.64 {@XMM[10]}, [r0,:128] @ next round tweak
|
||
|
|
|
||
|
|
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[8]
|
||
|
|
mov r1, sp
|
||
|
|
vst1.8 {@XMM[0]}, [sp,:128]
|
||
|
|
mov r2, $key
|
||
|
|
mov r4, $fp @ preserve fp
|
||
|
|
mov r5, $magic @ preserve magic
|
||
|
|
|
||
|
|
bl AES_decrypt
|
||
|
|
|
||
|
|
vld1.8 {@XMM[0]}, [sp,:128]
|
||
|
|
veor @XMM[0], @XMM[0], @XMM[8]
|
||
|
|
vst1.8 {@XMM[0]}, [$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, $fp @ preserve fp
|
||
|
|
|
||
|
|
bl AES_decrypt
|
||
|
|
|
||
|
|
vld1.8 {@XMM[0]}, [sp,:128]
|
||
|
|
veor @XMM[0], @XMM[0], @XMM[9]
|
||
|
|
vst1.8 {@XMM[0]}, [$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_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
|
||
|
|
#endif
|
||
|
|
___
|
||
|
|
|
||
|
|
$code =~ s/\`([^\`]*)\`/eval($1)/gem;
|
||
|
|
|
||
|
|
open SELF,$0;
|
||
|
|
while(<SELF>) {
|
||
|
|
next if (/^#!/);
|
||
|
|
last if (!s/^#/@/ and !/^$/);
|
||
|
|
print;
|
||
|
|
}
|
||
|
|
close SELF;
|
||
|
|
|
||
|
|
print $code;
|
||
|
|
|
||
|
|
close STDOUT;
|