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crypto: implement AES-NI acceleration

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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 2018-07-04 20:45:32 -05:00 • committed by Ivan
parent bd8cbcdb21
commit b0d0f51d8d
5 changed files with 806 additions and 1 deletions
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15
rpcs3/Crypto/aes.cpp
View file

@ -30,6 +30,7 @@
*/
#include "aes.h"
#include "aesni.h"
/*
* 32-bit integer manipulation macros (little endian)
@ -458,6 +459,9 @@ int aes_setkey_enc( aes_context *ctx, const unsigned char *key, unsigned int key
ctx->rk = RK = ctx->buf;
if( aesni_supports( POLARSSL_AESNI_AES ) )
return( aesni_setkey_enc( (unsigned char *) ctx->rk, key, keysize ) );
for( i = 0; i < (keysize >> 5); i++ )
{
GET_UINT32_LE( RK[i], key, i << 2 );
@ -558,6 +562,13 @@ int aes_setkey_dec( aes_context *ctx, const unsigned char *key, unsigned int key
if( ret != 0 )
return( ret );
if( aesni_supports( POLARSSL_AESNI_AES ) )
{
aesni_inverse_key( (unsigned char *) ctx->rk,
(const unsigned char *) cty.rk, ctx->nr );
goto done;
}
SK = cty.rk + cty.nr * 4;
*RK++ = *SK++;
@ -581,6 +592,7 @@ int aes_setkey_dec( aes_context *ctx, const unsigned char *key, unsigned int key
*RK++ = *SK++;
*RK++ = *SK++;
done:
memset( &cty, 0, sizeof( aes_context ) );
return( 0 );
@ -643,6 +655,9 @@ int aes_crypt_ecb( aes_context *ctx,
int i;
uint32_t *RK, X0, X1, X2, X3, Y0, Y1, Y2, Y3;
if( aesni_supports( POLARSSL_AESNI_AES ) )
return( aesni_crypt_ecb( ctx, mode, input, output ) );
RK = ctx->rk;
GET_UINT32_LE( X0, input, 0 ); X0 ^= *RK++;