mirror of https://github.com/RPCS3/rpcs3.git
crypto: implement AES-NI acceleration
This is based off the upstream implementation in mbedTLS as well as an external pull request [1] for MSVC support (using intrinsics). 1: https://github.com/ARMmbed/mbedtls/pull/1355
This commit is contained in:
Alex James
Ivan
parent
bd8cbcdb21
commit
b0d0f51d8d
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@ -30,6 +30,7 @@
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*/
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#include "aes.h"
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#include "aesni.h"
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/*
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* 32-bit integer manipulation macros (little endian)
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@ -458,6 +459,9 @@ int aes_setkey_enc( aes_context *ctx, const unsigned char *key, unsigned int key
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ctx->rk = RK = ctx->buf;
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if( aesni_supports( POLARSSL_AESNI_AES ) )
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return( aesni_setkey_enc( (unsigned char *) ctx->rk, key, keysize ) );
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for( i = 0; i < (keysize >> 5); i++ )
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{
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GET_UINT32_LE( RK[i], key, i << 2 );
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@ -558,6 +562,13 @@ int aes_setkey_dec( aes_context *ctx, const unsigned char *key, unsigned int key
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if( ret != 0 )
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return( ret );
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if( aesni_supports( POLARSSL_AESNI_AES ) )
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{
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aesni_inverse_key( (unsigned char *) ctx->rk,
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(const unsigned char *) cty.rk, ctx->nr );
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goto done;
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}
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SK = cty.rk + cty.nr * 4;
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*RK++ = *SK++;
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@ -581,6 +592,7 @@ int aes_setkey_dec( aes_context *ctx, const unsigned char *key, unsigned int key
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*RK++ = *SK++;
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*RK++ = *SK++;
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done:
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memset( &cty, 0, sizeof( aes_context ) );
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return( 0 );
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@ -643,6 +655,9 @@ int aes_crypt_ecb( aes_context *ctx,
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int i;
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uint32_t *RK, X0, X1, X2, X3, Y0, Y1, Y2, Y3;
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if( aesni_supports( POLARSSL_AESNI_AES ) )
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return( aesni_crypt_ecb( ctx, mode, input, output ) );
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RK = ctx->rk;
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GET_UINT32_LE( X0, input, 0 ); X0 ^= *RK++;
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@ -0,0 +1,682 @@
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/*
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* AES-NI support functions
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*
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* Copyright (C) 2013, Brainspark B.V.
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*
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* This file is part of PolarSSL (http://www.polarssl.org)
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* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/*
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* [AES-WP] http://software.intel.com/en-us/articles/intel-advanced-encryption-standard-aes-instructions-set
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* [CLMUL-WP] http://software.intel.com/en-us/articles/intel-carry-less-multiplication-instruction-and-its-usage-for-computing-the-gcm-mode/
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*/
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#include "aesni.h"
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#if defined(_MSC_VER) && defined(_M_X64)
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#define POLARSSL_HAVE_MSVC_X64_INTRINSICS
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#include <intrin.h>
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#endif
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/*
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* AES-NI support detection routine
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*/
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int aesni_supports( unsigned int what )
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{
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static int done = 0;
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static unsigned int c = 0;
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if( ! done )
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{
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#if defined(POLARSSL_HAVE_MSVC_X64_INTRINSICS)
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int regs[4]; // eax, ebx, ecx, edx
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__cpuid( regs, 1 );
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c = regs[2];
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#else
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asm( "movl $1, %%eax \n"
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"cpuid \n"
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: "=c" (c)
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:
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: "eax", "ebx", "edx" );
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#endif /* POLARSSL_HAVE_MSVC_X64_INTRINSICS */
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done = 1;
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}
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return( ( c & what ) != 0 );
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}
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/*
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* AES-NI AES-ECB block en(de)cryption
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*/
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int aesni_crypt_ecb( aes_context *ctx,
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int mode,
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const unsigned char input[16],
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unsigned char output[16] )
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{
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#if defined(POLARSSL_HAVE_MSVC_X64_INTRINSICS)
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__m128i* rk, a;
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int i;
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rk = (__m128i*)ctx->rk;
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a = _mm_xor_si128( _mm_loadu_si128( (__m128i*)input ), _mm_loadu_si128( rk++ ) );
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if (mode == AES_ENCRYPT)
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{
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for (i = ctx->nr - 1; i; --i)
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a = _mm_aesenc_si128( a, _mm_loadu_si128( rk++ ) );
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a = _mm_aesenclast_si128( a, _mm_loadu_si128( rk ) );
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}
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else
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{
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for (i = ctx->nr - 1; i; --i)
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a = _mm_aesdec_si128( a, _mm_loadu_si128( rk++ ) );
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a = _mm_aesdeclast_si128( a, _mm_loadu_si128( rk ) );
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}
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_mm_storeu_si128( (__m128i*)output, a );
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#else
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asm( "movdqu (%3), %%xmm0 \n" // load input
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"movdqu (%1), %%xmm1 \n" // load round key 0
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"pxor %%xmm1, %%xmm0 \n" // round 0
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"addq $16, %1 \n" // point to next round key
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"subl $1, %0 \n" // normal rounds = nr - 1
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"test %2, %2 \n" // mode?
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"jz 2f \n" // 0 = decrypt
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"1: \n" // encryption loop
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"movdqu (%1), %%xmm1 \n" // load round key
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"aesenc %%xmm1, %%xmm0 \n" // do round
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"addq $16, %1 \n" // point to next round key
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"subl $1, %0 \n" // loop
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"jnz 1b \n"
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"movdqu (%1), %%xmm1 \n" // load round key
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"aesenclast %%xmm1, %%xmm0 \n" // last round
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"jmp 3f \n"
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"2: \n" // decryption loop
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"movdqu (%1), %%xmm1 \n"
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"aesdec %%xmm1, %%xmm0 \n"
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"addq $16, %1 \n"
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"subl $1, %0 \n"
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"jnz 2b \n"
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"movdqu (%1), %%xmm1 \n" // load round key
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"aesdeclast %%xmm1, %%xmm0 \n" // last round
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"3: \n"
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"movdqu %%xmm0, (%4) \n" // export output
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:
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: "r" (ctx->nr), "r" (ctx->rk), "r" (mode), "r" (input), "r" (output)
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: "memory", "cc", "xmm0", "xmm1" );
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#endif /* POLARSSL_HAVE_MSVC_X64_INTRINSICS */
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return( 0 );
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}
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#if defined(POLARSSL_HAVE_MSVC_X64_INTRINSICS)
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static inline void clmul256( __m128i a, __m128i b, __m128i* r0, __m128i* r1 )
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{
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__m128i c, d, e, f, ef;
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c = _mm_clmulepi64_si128( a, b, 0x00 );
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d = _mm_clmulepi64_si128( a, b, 0x11 );
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e = _mm_clmulepi64_si128( a, b, 0x10 );
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f = _mm_clmulepi64_si128( a, b, 0x01 );
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// r0 = f0^e0^c1:c0 = c1:c0 ^ f0^e0:0
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// r1 = d1:f1^e1^d0 = d1:d0 ^ 0:f1^e1
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ef = _mm_xor_si128( e, f );
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*r0 = _mm_xor_si128( c, _mm_slli_si128( ef, 8 ) );
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*r1 = _mm_xor_si128( d, _mm_srli_si128( ef, 8 ) );
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}
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static inline void sll256( __m128i a0, __m128i a1, __m128i* s0, __m128i* s1 )
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{
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__m128i l0, l1, r0, r1;
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l0 = _mm_slli_epi64( a0, 1 );
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l1 = _mm_slli_epi64( a1, 1 );
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r0 = _mm_srli_epi64( a0, 63 );
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r1 = _mm_srli_epi64( a1, 63 );
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*s0 = _mm_or_si128( l0, _mm_slli_si128( r0, 8 ) );
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*s1 = _mm_or_si128( _mm_or_si128( l1, _mm_srli_si128( r0, 8 ) ), _mm_slli_si128( r1, 8 ) );
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}
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static inline __m128i reducemod128( __m128i x10, __m128i x32 )
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{
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__m128i a, b, c, dx0, e, f, g, h;
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// (1) left shift x0 by 63, 62 and 57
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a = _mm_slli_epi64( x10, 63 );
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b = _mm_slli_epi64( x10, 62 );
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c = _mm_slli_epi64( x10, 57 );
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// (2) compute D xor'ing a, b, c and x1
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// d:x0 = x1:x0 ^ [a^b^c:0]
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dx0 = _mm_xor_si128( x10, _mm_slli_si128( _mm_xor_si128( _mm_xor_si128( a, b ), c ), 8 ) );
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// (3) right shift [d:x0] by 1, 2, 7
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e = _mm_or_si128( _mm_srli_epi64( dx0, 1 ), _mm_srli_si128( _mm_slli_epi64( dx0, 63 ), 8 ) );
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f = _mm_or_si128( _mm_srli_epi64( dx0, 2 ), _mm_srli_si128( _mm_slli_epi64( dx0, 62 ), 8 ) );
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g = _mm_or_si128( _mm_srli_epi64( dx0, 7 ), _mm_srli_si128( _mm_slli_epi64( dx0, 57 ), 8 ) );
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// (4) compute h = d^e1^f1^g1 : x0^e0^f0^g0
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h = _mm_xor_si128( dx0, _mm_xor_si128( e, _mm_xor_si128( f, g ) ) );
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// result is x3^h1:x2^h0
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return _mm_xor_si128( x32, h );
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}
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#endif /* POLARSSL_HAVE_MSVC_X64_INTRINSICS */
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/*
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* GCM multiplication: c = a times b in GF(2^128)
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* Based on [CLMUL-WP] algorithms 1 (with equation 27) and 5.
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*/
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void aesni_gcm_mult( unsigned char c[16],
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const unsigned char a[16],
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const unsigned char b[16] )
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{
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#if defined(POLARSSL_HAVE_MSVC_X64_INTRINSICS)
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__m128i xa, xb, m0, m1, x10, x32, r;
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xa.m128i_u64[1] = _byteswap_uint64( *((unsigned __int64*)a + 0) );
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xa.m128i_u64[0] = _byteswap_uint64( *((unsigned __int64*)a + 1) );
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xb.m128i_u64[1] = _byteswap_uint64( *((unsigned __int64*)b + 0) );
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xb.m128i_u64[0] = _byteswap_uint64( *((unsigned __int64*)b + 1) );
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clmul256( xa, xb, &m0, &m1 );
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sll256( m0, m1, &x10, &x32 );
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r = reducemod128( x10, x32 );
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*((unsigned __int64*)c + 0) = _byteswap_uint64( r.m128i_u64[1] );
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*((unsigned __int64*)c + 1) = _byteswap_uint64( r.m128i_u64[0] );
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#else
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unsigned char aa[16], bb[16], cc[16];
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size_t i;
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/* The inputs are in big-endian order, so byte-reverse them */
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for( i = 0; i < 16; i++ )
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{
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aa[i] = a[15 - i];
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bb[i] = b[15 - i];
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}
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asm( "movdqu (%0), %%xmm0 \n" // a1:a0
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"movdqu (%1), %%xmm1 \n" // b1:b0
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/*
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* Caryless multiplication xmm2:xmm1 = xmm0 * xmm1
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* using [CLMUL-WP] algorithm 1 (p. 13).
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*/
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"movdqa %%xmm1, %%xmm2 \n" // copy of b1:b0
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"movdqa %%xmm1, %%xmm3 \n" // same
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"movdqa %%xmm1, %%xmm4 \n" // same
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"pclmulqdq $0x00, %%xmm0, %%xmm1 \n" // a0*b0 = c1:c0
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"pclmulqdq $0x11, %%xmm0, %%xmm2 \n" // a1*b1 = d1:d0
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"pclmulqdq $0x10, %%xmm0, %%xmm3 \n" // a0*b1 = e1:e0
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"pclmulqdq $0x01, %%xmm0, %%xmm4 \n" // a1*b0 = f1:f0
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"pxor %%xmm3, %%xmm4 \n" // e1+f1:e0+f0
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"movdqa %%xmm4, %%xmm3 \n" // same
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"psrldq $8, %%xmm4 \n" // 0:e1+f1
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"pslldq $8, %%xmm3 \n" // e0+f0:0
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"pxor %%xmm4, %%xmm2 \n" // d1:d0+e1+f1
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"pxor %%xmm3, %%xmm1 \n" // c1+e0+f1:c0
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/*
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* Now shift the result one bit to the left,
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* taking advantage of [CLMUL-WP] eq 27 (p. 20)
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*/
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"movdqa %%xmm1, %%xmm3 \n" // r1:r0
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"movdqa %%xmm2, %%xmm4 \n" // r3:r2
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"psllq $1, %%xmm1 \n" // r1<<1:r0<<1
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"psllq $1, %%xmm2 \n" // r3<<1:r2<<1
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"psrlq $63, %%xmm3 \n" // r1>>63:r0>>63
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"psrlq $63, %%xmm4 \n" // r3>>63:r2>>63
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"movdqa %%xmm3, %%xmm5 \n" // r1>>63:r0>>63
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"pslldq $8, %%xmm3 \n" // r0>>63:0
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"pslldq $8, %%xmm4 \n" // r2>>63:0
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"psrldq $8, %%xmm5 \n" // 0:r1>>63
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"por %%xmm3, %%xmm1 \n" // r1<<1|r0>>63:r0<<1
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"por %%xmm4, %%xmm2 \n" // r3<<1|r2>>62:r2<<1
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"por %%xmm5, %%xmm2 \n" // r3<<1|r2>>62:r2<<1|r1>>63
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/*
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* Now reduce modulo the GCM polynomial x^128 + x^7 + x^2 + x + 1
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* using [CLMUL-WP] algorithm 5 (p. 20).
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* Currently xmm2:xmm1 holds x3:x2:x1:x0 (already shifted).
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*/
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/* Step 2 (1) */
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"movdqa %%xmm1, %%xmm3 \n" // x1:x0
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"movdqa %%xmm1, %%xmm4 \n" // same
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"movdqa %%xmm1, %%xmm5 \n" // same
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"psllq $63, %%xmm3 \n" // x1<<63:x0<<63 = stuff:a
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"psllq $62, %%xmm4 \n" // x1<<62:x0<<62 = stuff:b
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"psllq $57, %%xmm5 \n" // x1<<57:x0<<57 = stuff:c
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/* Step 2 (2) */
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"pxor %%xmm4, %%xmm3 \n" // stuff:a+b
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"pxor %%xmm5, %%xmm3 \n" // stuff:a+b+c
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"pslldq $8, %%xmm3 \n" // a+b+c:0
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"pxor %%xmm3, %%xmm1 \n" // x1+a+b+c:x0 = d:x0
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/* Steps 3 and 4 */
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"movdqa %%xmm1,%%xmm0 \n" // d:x0
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"movdqa %%xmm1,%%xmm4 \n" // same
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"movdqa %%xmm1,%%xmm5 \n" // same
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"psrlq $1, %%xmm0 \n" // e1:x0>>1 = e1:e0'
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"psrlq $2, %%xmm4 \n" // f1:x0>>2 = f1:f0'
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"psrlq $7, %%xmm5 \n" // g1:x0>>7 = g1:g0'
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"pxor %%xmm4, %%xmm0 \n" // e1+f1:e0'+f0'
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"pxor %%xmm5, %%xmm0 \n" // e1+f1+g1:e0'+f0'+g0'
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// e0'+f0'+g0' is almost e0+f0+g0, except for some missing
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// bits carried from d. Now get those bits back in.
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"movdqa %%xmm1,%%xmm3 \n" // d:x0
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"movdqa %%xmm1,%%xmm4 \n" // same
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"movdqa %%xmm1,%%xmm5 \n" // same
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"psllq $63, %%xmm3 \n" // d<<63:stuff
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"psllq $62, %%xmm4 \n" // d<<62:stuff
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"psllq $57, %%xmm5 \n" // d<<57:stuff
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"pxor %%xmm4, %%xmm3 \n" // d<<63+d<<62:stuff
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"pxor %%xmm5, %%xmm3 \n" // missing bits of d:stuff
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"psrldq $8, %%xmm3 \n" // 0:missing bits of d
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"pxor %%xmm3, %%xmm0 \n" // e1+f1+g1:e0+f0+g0
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"pxor %%xmm1, %%xmm0 \n" // h1:h0
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"pxor %%xmm2, %%xmm0 \n" // x3+h1:x2+h0
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"movdqu %%xmm0, (%2) \n" // done
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:
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: "r" (aa), "r" (bb), "r" (cc)
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: "memory", "cc", "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5" );
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/* Now byte-reverse the outputs */
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for( i = 0; i < 16; i++ )
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c[i] = cc[15 - i];
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#endif /* POLARSSL_HAVE_MSVC_X64_INTRINSICS */
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return;
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}
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/*
|
||||
* Compute decryption round keys from encryption round keys
|
||||
*/
|
||||
void aesni_inverse_key( unsigned char *invkey,
|
||||
const unsigned char *fwdkey, int nr )
|
||||
{
|
||||
unsigned char *ik = invkey;
|
||||
const unsigned char *fk = fwdkey + 16 * nr;
|
||||
|
||||
memcpy( ik, fk, 16 );
|
||||
|
||||
for( fk -= 16, ik += 16; fk > fwdkey; fk -= 16, ik += 16 )
|
||||
#if defined(POLARSSL_HAVE_MSVC_X64_INTRINSICS)
|
||||
_mm_storeu_si128( (__m128i*)ik, _mm_aesimc_si128( _mm_loadu_si128( (__m128i*)fk) ) );
|
||||
#else
|
||||
asm( "movdqu (%0), %%xmm0 \n"
|
||||
"aesimc %%xmm0, %%xmm0 \n"
|
||||
"movdqu %%xmm0, (%1) \n"
|
||||
:
|
||||
: "r" (fk), "r" (ik)
|
||||
: "memory", "xmm0" );
|
||||
#endif /* POLARSSL_HAVE_MSVC_X64_INTRINSICS */
|
||||
|
||||
memcpy( ik, fk, 16 );
|
||||
}
|
||||
|
||||
#if defined(POLARSSL_HAVE_MSVC_X64_INTRINSICS)
|
||||
inline static __m128i aes_key_128_assist( __m128i key, __m128i kg )
|
||||
{
|
||||
key = _mm_xor_si128( key, _mm_slli_si128( key, 4 ) );
|
||||
key = _mm_xor_si128( key, _mm_slli_si128( key, 4 ) );
|
||||
key = _mm_xor_si128( key, _mm_slli_si128( key, 4 ) );
|
||||
kg = _mm_shuffle_epi32( kg, _MM_SHUFFLE( 3, 3, 3, 3 ) );
|
||||
return _mm_xor_si128( key, kg );
|
||||
}
|
||||
|
||||
// [AES-WP] Part of Fig. 25 page 32
|
||||
inline static void aes_key_192_assist( __m128i* temp1, __m128i * temp3, __m128i kg )
|
||||
{
|
||||
__m128i temp4;
|
||||
kg = _mm_shuffle_epi32( kg, 0x55 );
|
||||
temp4 = _mm_slli_si128( *temp1, 0x4 );
|
||||
*temp1 = _mm_xor_si128( *temp1, temp4 );
|
||||
temp4 = _mm_slli_si128( temp4, 0x4 );
|
||||
*temp1 = _mm_xor_si128( *temp1, temp4 );
|
||||
temp4 = _mm_slli_si128( temp4, 0x4 );
|
||||
*temp1 = _mm_xor_si128( *temp1, temp4 );
|
||||
*temp1 = _mm_xor_si128( *temp1, kg );
|
||||
kg = _mm_shuffle_epi32( *temp1, 0xff );
|
||||
temp4 = _mm_slli_si128( *temp3, 0x4 );
|
||||
*temp3 = _mm_xor_si128( *temp3, temp4 );
|
||||
*temp3 = _mm_xor_si128( *temp3, kg );
|
||||
}
|
||||
|
||||
// [AES-WP] Part of Fig. 26 page 34
|
||||
inline static void aes_key_256_assist_1( __m128i* temp1, __m128i kg )
|
||||
{
|
||||
__m128i temp4;
|
||||
kg = _mm_shuffle_epi32( kg, 0xff );
|
||||
temp4 = _mm_slli_si128( *temp1, 0x4 );
|
||||
*temp1 = _mm_xor_si128( *temp1, temp4 );
|
||||
temp4 = _mm_slli_si128( temp4, 0x4 );
|
||||
*temp1 = _mm_xor_si128( *temp1, temp4 );
|
||||
temp4 = _mm_slli_si128( temp4, 0x4 );
|
||||
*temp1 = _mm_xor_si128( *temp1, temp4 );
|
||||
*temp1 = _mm_xor_si128( *temp1, kg );
|
||||
}
|
||||
|
||||
inline static void aes_key_256_assist_2( __m128i* temp1, __m128i* temp3 )
|
||||
{
|
||||
__m128i temp2, temp4;
|
||||
temp4 = _mm_aeskeygenassist_si128( *temp1, 0x0 );
|
||||
temp2 = _mm_shuffle_epi32( temp4, 0xaa );
|
||||
temp4 = _mm_slli_si128( *temp3, 0x4 );
|
||||
*temp3 = _mm_xor_si128( *temp3, temp4 );
|
||||
temp4 = _mm_slli_si128( temp4, 0x4 );
|
||||
*temp3 = _mm_xor_si128( *temp3, temp4 );
|
||||
temp4 = _mm_slli_si128( temp4, 0x4 );
|
||||
*temp3 = _mm_xor_si128( *temp3, temp4 );
|
||||
*temp3 = _mm_xor_si128( *temp3, temp2 );
|
||||
}
|
||||
#endif /* POLARSSL_HAVE_MSVC_X64_INTRINSICS */
|
||||
|
||||
/*
|
||||
* Key expansion, 128-bit case
|
||||
*/
|
||||
static void aesni_setkey_enc_128( unsigned char *rk,
|
||||
const unsigned char *key )
|
||||
{
|
||||
#if defined(POLARSSL_HAVE_MSVC_X64_INTRINSICS)
|
||||
__m128i* xrk, k;
|
||||
|
||||
xrk = (__m128i*)rk;
|
||||
|
||||
#define EXPAND_ROUND(k, rcon) \
|
||||
_mm_storeu_si128( xrk++, k ); \
|
||||
k = aes_key_128_assist( k, _mm_aeskeygenassist_si128( k, rcon ) )
|
||||
|
||||
k = _mm_loadu_si128( (__m128i*)key );
|
||||
EXPAND_ROUND( k, 0x01 );
|
||||
EXPAND_ROUND( k, 0x02 );
|
||||
EXPAND_ROUND( k, 0x04 );
|
||||
EXPAND_ROUND( k, 0x08 );
|
||||
EXPAND_ROUND( k, 0x10 );
|
||||
EXPAND_ROUND( k, 0x20 );
|
||||
EXPAND_ROUND( k, 0x40 );
|
||||
EXPAND_ROUND( k, 0x80 );
|
||||
EXPAND_ROUND( k, 0x1b );
|
||||
EXPAND_ROUND( k, 0x36 );
|
||||
_mm_storeu_si128( xrk, k );
|
||||
|
||||
#undef EXPAND_ROUND
|
||||
|
||||
#else
|
||||
asm( "movdqu (%1), %%xmm0 \n" // copy the original key
|
||||
"movdqu %%xmm0, (%0) \n" // as round key 0
|
||||
"jmp 2f \n" // skip auxiliary routine
|
||||
|
||||
/*
|
||||
* Finish generating the next round key.
|
||||
*
|
||||
* On entry xmm0 is r3:r2:r1:r0 and xmm1 is X:stuff:stuff:stuff
|
||||
* with X = rot( sub( r3 ) ) ^ RCON.
|
||||
*
|
||||
* On exit, xmm0 is r7:r6:r5:r4
|
||||
* with r4 = X + r0, r5 = r4 + r1, r6 = r5 + r2, r7 = r6 + r3
|
||||
* and those are written to the round key buffer.
|
||||
*/
|
||||
"1: \n"
|
||||
"pshufd $0xff, %%xmm1, %%xmm1 \n" // X:X:X:X
|
||||
"pxor %%xmm0, %%xmm1 \n" // X+r3:X+r2:X+r1:r4
|
||||
"pslldq $4, %%xmm0 \n" // r2:r1:r0:0
|
||||
"pxor %%xmm0, %%xmm1 \n" // X+r3+r2:X+r2+r1:r5:r4
|
||||
"pslldq $4, %%xmm0 \n" // etc
|
||||
"pxor %%xmm0, %%xmm1 \n"
|
||||
"pslldq $4, %%xmm0 \n"
|
||||
"pxor %%xmm1, %%xmm0 \n" // update xmm0 for next time!
|
||||
"add $16, %0 \n" // point to next round key
|
||||
"movdqu %%xmm0, (%0) \n" // write it
|
||||
"ret \n"
|
||||
|
||||
/* Main "loop" */
|
||||
"2: \n"
|
||||
"aeskeygenassist $0x01, %%xmm0, %%xmm1 \ncall 1b \n"
|
||||
"aeskeygenassist $0x02, %%xmm0, %%xmm1 \ncall 1b \n"
|
||||
"aeskeygenassist $0x04, %%xmm0, %%xmm1 \ncall 1b \n"
|
||||
"aeskeygenassist $0x08, %%xmm0, %%xmm1 \ncall 1b \n"
|
||||
"aeskeygenassist $0x10, %%xmm0, %%xmm1 \ncall 1b \n"
|
||||
"aeskeygenassist $0x20, %%xmm0, %%xmm1 \ncall 1b \n"
|
||||
"aeskeygenassist $0x40, %%xmm0, %%xmm1 \ncall 1b \n"
|
||||
"aeskeygenassist $0x80, %%xmm0, %%xmm1 \ncall 1b \n"
|
||||
"aeskeygenassist $0x1B, %%xmm0, %%xmm1 \ncall 1b \n"
|
||||
"aeskeygenassist $0x36, %%xmm0, %%xmm1 \ncall 1b \n"
|
||||
:
|
||||
: "r" (rk), "r" (key)
|
||||
: "memory", "cc", "0" );
|
||||
#endif /* POLARSSL_HAVE_MSVC_X64_INTRINSICS */
|
||||
}
|
||||
|
||||
/*
|
||||
* Key expansion, 192-bit case
|
||||
*/
|
||||
static void aesni_setkey_enc_192( unsigned char *rk,
|
||||
const unsigned char *key )
|
||||
{
|
||||
#if defined(POLARSSL_HAVE_MSVC_X64_INTRINSICS)
|
||||
__m128i temp1, temp3;
|
||||
__m128i *key_schedule = (__m128i*)rk;
|
||||
temp1 = _mm_loadu_si128( (__m128i*)key );
|
||||
temp3 = _mm_loadu_si128( (__m128i*)(key + 16) );
|
||||
key_schedule[0] = temp1;
|
||||
key_schedule[1] = temp3;
|
||||
aes_key_192_assist( &temp1, &temp3, _mm_aeskeygenassist_si128(temp3, 0x1) );
|
||||
key_schedule[1] = _mm_castpd_si128( _mm_shuffle_pd( _mm_castsi128_pd( key_schedule[1] ), _mm_castsi128_pd( temp1 ), 0 ) );
|
||||
key_schedule[2] = _mm_castpd_si128( _mm_shuffle_pd( _mm_castsi128_pd( temp1 ), _mm_castsi128_pd( temp3 ), 1 ) );
|
||||
aes_key_192_assist( &temp1, &temp3, _mm_aeskeygenassist_si128( temp3, 0x2 ) );
|
||||
key_schedule[3] = temp1;
|
||||
key_schedule[4] = temp3;
|
||||
aes_key_192_assist( &temp1, &temp3, _mm_aeskeygenassist_si128( temp3, 0x4 ) );
|
||||
key_schedule[4] = _mm_castpd_si128( _mm_shuffle_pd( _mm_castsi128_pd( key_schedule[4] ), _mm_castsi128_pd( temp1 ), 0 ) );
|
||||
key_schedule[5] = _mm_castpd_si128( _mm_shuffle_pd( _mm_castsi128_pd( temp1 ), _mm_castsi128_pd( temp3 ), 1 ) );
|
||||
aes_key_192_assist( &temp1, &temp3, _mm_aeskeygenassist_si128( temp3, 0x8 ) );
|
||||
key_schedule[6] = temp1;
|
||||
key_schedule[7] = temp3;
|
||||
aes_key_192_assist( &temp1, &temp3, _mm_aeskeygenassist_si128( temp3, 0x10 ) );
|
||||
key_schedule[7] = _mm_castpd_si128( _mm_shuffle_pd( _mm_castsi128_pd( key_schedule[7] ), _mm_castsi128_pd( temp1 ), 0 ) );
|
||||
key_schedule[8] = _mm_castpd_si128( _mm_shuffle_pd( _mm_castsi128_pd( temp1 ), _mm_castsi128_pd( temp3 ), 1 ) );
|
||||
aes_key_192_assist( &temp1, &temp3, _mm_aeskeygenassist_si128( temp3, 0x20 ) );
|
||||
key_schedule[9] = temp1;
|
||||
key_schedule[10] = temp3;
|
||||
aes_key_192_assist( &temp1, &temp3, _mm_aeskeygenassist_si128( temp3, 0x40 ) );
|
||||
key_schedule[10] = _mm_castpd_si128( _mm_shuffle_pd( _mm_castsi128_pd( key_schedule[10] ), _mm_castsi128_pd( temp1 ), 0 ) );
|
||||
key_schedule[11] = _mm_castpd_si128( _mm_shuffle_pd( _mm_castsi128_pd( temp1 ), _mm_castsi128_pd( temp3 ), 1 ) );
|
||||
aes_key_192_assist( &temp1, &temp3, _mm_aeskeygenassist_si128( temp3, 0x80 ) );
|
||||
key_schedule[12] = temp1;
|
||||
#else
|
||||
asm( "movdqu (%1), %%xmm0 \n" // copy original round key
|
||||
"movdqu %%xmm0, (%0) \n"
|
||||
"add $16, %0 \n"
|
||||
"movq 16(%1), %%xmm1 \n"
|
||||
"movq %%xmm1, (%0) \n"
|
||||
"add $8, %0 \n"
|
||||
"jmp 2f \n" // skip auxiliary routine
|
||||
|
||||
/*
|
||||
* Finish generating the next 6 quarter-keys.
|
||||
*
|
||||
* On entry xmm0 is r3:r2:r1:r0, xmm1 is stuff:stuff:r5:r4
|
||||
* and xmm2 is stuff:stuff:X:stuff with X = rot( sub( r3 ) ) ^ RCON.
|
||||
*
|
||||
* On exit, xmm0 is r9:r8:r7:r6 and xmm1 is stuff:stuff:r11:r10
|
||||
* and those are written to the round key buffer.
|
||||
*/
|
||||
"1: \n"
|
||||
"pshufd $0x55, %%xmm2, %%xmm2 \n" // X:X:X:X
|
||||
"pxor %%xmm0, %%xmm2 \n" // X+r3:X+r2:X+r1:r4
|
||||
"pslldq $4, %%xmm0 \n" // etc
|
||||
"pxor %%xmm0, %%xmm2 \n"
|
||||
"pslldq $4, %%xmm0 \n"
|
||||
"pxor %%xmm0, %%xmm2 \n"
|
||||
"pslldq $4, %%xmm0 \n"
|
||||
"pxor %%xmm2, %%xmm0 \n" // update xmm0 = r9:r8:r7:r6
|
||||
"movdqu %%xmm0, (%0) \n"
|
||||
"add $16, %0 \n"
|
||||
"pshufd $0xff, %%xmm0, %%xmm2 \n" // r9:r9:r9:r9
|
||||
"pxor %%xmm1, %%xmm2 \n" // stuff:stuff:r9+r5:r10
|
||||
"pslldq $4, %%xmm1 \n" // r2:r1:r0:0
|
||||
"pxor %%xmm2, %%xmm1 \n" // update xmm1 = stuff:stuff:r11:r10
|
||||
"movq %%xmm1, (%0) \n"
|
||||
"add $8, %0 \n"
|
||||
"ret \n"
|
||||
|
||||
"2: \n"
|
||||
"aeskeygenassist $0x01, %%xmm1, %%xmm2 \ncall 1b \n"
|
||||
"aeskeygenassist $0x02, %%xmm1, %%xmm2 \ncall 1b \n"
|
||||
"aeskeygenassist $0x04, %%xmm1, %%xmm2 \ncall 1b \n"
|
||||
"aeskeygenassist $0x08, %%xmm1, %%xmm2 \ncall 1b \n"
|
||||
"aeskeygenassist $0x10, %%xmm1, %%xmm2 \ncall 1b \n"
|
||||
"aeskeygenassist $0x20, %%xmm1, %%xmm2 \ncall 1b \n"
|
||||
"aeskeygenassist $0x40, %%xmm1, %%xmm2 \ncall 1b \n"
|
||||
"aeskeygenassist $0x80, %%xmm1, %%xmm2 \ncall 1b \n"
|
||||
|
||||
:
|
||||
: "r" (rk), "r" (key)
|
||||
: "memory", "cc", "0" );
|
||||
#endif /* POLARSSL_HAVE_MSVC_X64_INTRINSICS */
|
||||
}
|
||||
|
||||
/*
|
||||
* Key expansion, 256-bit case
|
||||
*/
|
||||
static void aesni_setkey_enc_256( unsigned char *rk,
|
||||
const unsigned char *key )
|
||||
{
|
||||
#if defined(POLARSSL_HAVE_MSVC_X64_INTRINSICS)
|
||||
__m128i temp1, temp3;
|
||||
__m128i *key_schedule = (__m128i*)rk;
|
||||
temp1 = _mm_loadu_si128( (__m128i*)key );
|
||||
temp3 = _mm_loadu_si128( (__m128i*)(key + 16) );
|
||||
key_schedule[0] = temp1;
|
||||
key_schedule[1] = temp3;
|
||||
aes_key_256_assist_1( &temp1, _mm_aeskeygenassist_si128( temp3, 0x01 ) );
|
||||
key_schedule[2] = temp1;
|
||||
aes_key_256_assist_2( &temp1, &temp3 );
|
||||
key_schedule[3] = temp3;
|
||||
aes_key_256_assist_1( &temp1, _mm_aeskeygenassist_si128( temp3, 0x02 ) );
|
||||
key_schedule[4] = temp1;
|
||||
aes_key_256_assist_2( &temp1, &temp3 );
|
||||
key_schedule[5] = temp3;
|
||||
aes_key_256_assist_1( &temp1, _mm_aeskeygenassist_si128( temp3, 0x04 ) );
|
||||
key_schedule[6] = temp1;
|
||||
aes_key_256_assist_2( &temp1, &temp3 );
|
||||
key_schedule[7] = temp3;
|
||||
aes_key_256_assist_1( &temp1, _mm_aeskeygenassist_si128( temp3, 0x08 ) );
|
||||
key_schedule[8] = temp1;
|
||||
aes_key_256_assist_2( &temp1, &temp3 );
|
||||
key_schedule[9] = temp3;
|
||||
aes_key_256_assist_1( &temp1, _mm_aeskeygenassist_si128( temp3, 0x10 ) );
|
||||
key_schedule[10] = temp1;
|
||||
aes_key_256_assist_2( &temp1, &temp3 );
|
||||
key_schedule[11] = temp3;
|
||||
aes_key_256_assist_1( &temp1, _mm_aeskeygenassist_si128( temp3, 0x20 ) );
|
||||
key_schedule[12] = temp1;
|
||||
aes_key_256_assist_2( &temp1, &temp3 );
|
||||
key_schedule[13] = temp3;
|
||||
aes_key_256_assist_1( &temp1, _mm_aeskeygenassist_si128( temp3, 0x40 ) );
|
||||
key_schedule[14] = temp1;
|
||||
#else
|
||||
asm( "movdqu (%1), %%xmm0 \n"
|
||||
"movdqu %%xmm0, (%0) \n"
|
||||
"add $16, %0 \n"
|
||||
"movdqu 16(%1), %%xmm1 \n"
|
||||
"movdqu %%xmm1, (%0) \n"
|
||||
"jmp 2f \n" // skip auxiliary routine
|
||||
|
||||
/*
|
||||
* Finish generating the next two round keys.
|
||||
*
|
||||
* On entry xmm0 is r3:r2:r1:r0, xmm1 is r7:r6:r5:r4 and
|
||||
* xmm2 is X:stuff:stuff:stuff with X = rot( sub( r7 )) ^ RCON
|
||||
*
|
||||
* On exit, xmm0 is r11:r10:r9:r8 and xmm1 is r15:r14:r13:r12
|
||||
* and those have been written to the output buffer.
|
||||
*/
|
||||
"1: \n"
|
||||
"pshufd $0xff, %%xmm2, %%xmm2 \n"
|
||||
"pxor %%xmm0, %%xmm2 \n"
|
||||
"pslldq $4, %%xmm0 \n"
|
||||
"pxor %%xmm0, %%xmm2 \n"
|
||||
"pslldq $4, %%xmm0 \n"
|
||||
"pxor %%xmm0, %%xmm2 \n"
|
||||
"pslldq $4, %%xmm0 \n"
|
||||
"pxor %%xmm2, %%xmm0 \n"
|
||||
"add $16, %0 \n"
|
||||
"movdqu %%xmm0, (%0) \n"
|
||||
|
||||
/* Set xmm2 to stuff:Y:stuff:stuff with Y = subword( r11 )
|
||||
* and proceed to generate next round key from there */
|
||||
"aeskeygenassist $0, %%xmm0, %%xmm2\n"
|
||||
"pshufd $0xaa, %%xmm2, %%xmm2 \n"
|
||||
"pxor %%xmm1, %%xmm2 \n"
|
||||
"pslldq $4, %%xmm1 \n"
|
||||
"pxor %%xmm1, %%xmm2 \n"
|
||||
"pslldq $4, %%xmm1 \n"
|
||||
"pxor %%xmm1, %%xmm2 \n"
|
||||
"pslldq $4, %%xmm1 \n"
|
||||
"pxor %%xmm2, %%xmm1 \n"
|
||||
"add $16, %0 \n"
|
||||
"movdqu %%xmm1, (%0) \n"
|
||||
"ret \n"
|
||||
|
||||
/*
|
||||
* Main "loop" - Generating one more key than necessary,
|
||||
* see definition of aes_context.buf
|
||||
*/
|
||||
"2: \n"
|
||||
"aeskeygenassist $0x01, %%xmm1, %%xmm2 \ncall 1b \n"
|
||||
"aeskeygenassist $0x02, %%xmm1, %%xmm2 \ncall 1b \n"
|
||||
"aeskeygenassist $0x04, %%xmm1, %%xmm2 \ncall 1b \n"
|
||||
"aeskeygenassist $0x08, %%xmm1, %%xmm2 \ncall 1b \n"
|
||||
"aeskeygenassist $0x10, %%xmm1, %%xmm2 \ncall 1b \n"
|
||||
"aeskeygenassist $0x20, %%xmm1, %%xmm2 \ncall 1b \n"
|
||||
"aeskeygenassist $0x40, %%xmm1, %%xmm2 \ncall 1b \n"
|
||||
:
|
||||
: "r" (rk), "r" (key)
|
||||
: "memory", "cc", "0" );
|
||||
#endif /* POLARSSL_HAVE_MSVC_X64_INTRINSICS */
|
||||
}
|
||||
|
||||
/*
|
||||
* Key expansion, wrapper
|
||||
*/
|
||||
int aesni_setkey_enc( unsigned char *rk,
|
||||
const unsigned char *key,
|
||||
size_t bits )
|
||||
{
|
||||
switch( bits )
|
||||
{
|
||||
case 128: aesni_setkey_enc_128( rk, key ); break;
|
||||
case 192: aesni_setkey_enc_192( rk, key ); break;
|
||||
case 256: aesni_setkey_enc_256( rk, key ); break;
|
||||
default : return( POLARSSL_ERR_AES_INVALID_KEY_LENGTH );
|
||||
}
|
||||
|
||||
return( 0 );
|
||||
}
|
||||
|
|
@ -0,0 +1,103 @@
|
|||
#pragma once
|
||||
#define POLARSSL_HAVE_ASM
|
||||
/**
|
||||
* \file aesni.h
|
||||
*
|
||||
* \brief AES-NI for hardware AES acceleration on some Intel processors
|
||||
*
|
||||
* Copyright (C) 2013, Brainspark B.V.
|
||||
*
|
||||
* This file is part of PolarSSL (http://www.polarssl.org)
|
||||
* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
|
||||
*
|
||||
* All rights reserved.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*/
|
||||
|
||||
#include "aes.h"
|
||||
|
||||
#define POLARSSL_AESNI_AES 0x02000000u
|
||||
#define POLARSSL_AESNI_CLMUL 0x00000002u
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
/**
|
||||
* \brief AES-NI features detection routine
|
||||
*
|
||||
* \param what The feature to detect
|
||||
* (POLARSSL_AESNI_AES or POLARSSL_AESNI_CLMUL)
|
||||
*
|
||||
* \return 1 if CPU has support for the feature, 0 otherwise
|
||||
*/
|
||||
int aesni_supports( unsigned int what );
|
||||
|
||||
/**
|
||||
* \brief AES-NI AES-ECB block en(de)cryption
|
||||
*
|
||||
* \param ctx AES context
|
||||
* \param mode AES_ENCRYPT or AES_DECRYPT
|
||||
* \param input 16-byte input block
|
||||
* \param output 16-byte output block
|
||||
*
|
||||
* \return 0 on success (cannot fail)
|
||||
*/
|
||||
int aesni_crypt_ecb( aes_context *ctx,
|
||||
int mode,
|
||||
const unsigned char input[16],
|
||||
unsigned char output[16] );
|
||||
|
||||
/**
|
||||
* \brief GCM multiplication: c = a * b in GF(2^128)
|
||||
*
|
||||
* \param c Result
|
||||
* \param a First operand
|
||||
* \param b Second operand
|
||||
*
|
||||
* \note Both operands and result are bit strings interpreted as
|
||||
* elements of GF(2^128) as per the GCM spec.
|
||||
*/
|
||||
void aesni_gcm_mult( unsigned char c[16],
|
||||
const unsigned char a[16],
|
||||
const unsigned char b[16] );
|
||||
|
||||
/**
|
||||
* \brief Compute decryption round keys from encryption round keys
|
||||
*
|
||||
* \param invkey Round keys for the equivalent inverse cipher
|
||||
* \param fwdkey Original round keys (for encryption)
|
||||
* \param nr Number of rounds (that is, number of round keys minus one)
|
||||
*/
|
||||
void aesni_inverse_key( unsigned char *invkey,
|
||||
const unsigned char *fwdkey, int nr );
|
||||
|
||||
/**
|
||||
* \brief Perform key expansion (for encryption)
|
||||
*
|
||||
* \param rk Destination buffer where the round keys are written
|
||||
* \param key Encryption key
|
||||
* \param bits Key size in bits (must be 128, 192 or 256)
|
||||
*
|
||||
* \return 0 if successful, or POLARSSL_ERR_AES_INVALID_KEY_LENGTH
|
||||
*/
|
||||
int aesni_setkey_enc( unsigned char *rk,
|
||||
const unsigned char *key,
|
||||
size_t bits );
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
|
@ -55,6 +55,7 @@ endif()
|
|||
# Crypto
|
||||
target_sources(rpcs3_emu PRIVATE
|
||||
../Crypto/aes.cpp
|
||||
../Crypto/aesni.cpp
|
||||
../Crypto/ec.cpp
|
||||
../Crypto/key_vault.cpp
|
||||
../Crypto/lz.cpp
|
||||
|
|
|
|||
|
|
@ -326,6 +326,9 @@
|
|||
<ClCompile Include="Crypto\aes.cpp">
|
||||
<PrecompiledHeader>NotUsing</PrecompiledHeader>
|
||||
</ClCompile>
|
||||
<ClCompile Include="Crypto\aesni.cpp">
|
||||
<PrecompiledHeader>NotUsing</PrecompiledHeader>
|
||||
</ClCompile>
|
||||
<ClCompile Include="Crypto\ec.cpp">
|
||||
<PrecompiledHeader>NotUsing</PrecompiledHeader>
|
||||
</ClCompile>
|
||||
|
|
@ -407,6 +410,7 @@
|
|||
<ClInclude Include="..\Utilities\version.h" />
|
||||
<ClInclude Include="..\Utilities\VirtualMemory.h" />
|
||||
<ClInclude Include="Crypto\aes.h" />
|
||||
<ClInclude Include="Crypto\aesni.h" />
|
||||
<ClInclude Include="Crypto\ec.h" />
|
||||
<ClInclude Include="Crypto\key_vault.h" />
|
||||
<ClInclude Include="Crypto\lz.h" />
|
||||
|
|
@ -627,4 +631,4 @@
|
|||
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
|
||||
<ImportGroup Label="ExtensionTargets">
|
||||
</ImportGroup>
|
||||
</Project>
|
||||
</Project>
|
||||
|
|
|
|||
Loading…
Reference in New Issue