96 lines
3 KiB
C
96 lines
3 KiB
C
/**
|
|
* \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.
|
|
*/
|
|
#ifndef POLARSSL_AESNI_H
|
|
#define POLARSSL_AESNI_H
|
|
|
|
#include "aes.h"
|
|
|
|
#define POLARSSL_AESNI_AES 0x02000000u
|
|
#define POLARSSL_AESNI_CLMUL 0x00000002u
|
|
|
|
#if defined(POLARSSL_HAVE_ASM) && defined(__GNUC__) && \
|
|
( defined(__amd64__) || defined(__x86_64__) ) && \
|
|
! defined(POLARSSL_HAVE_X86_64)
|
|
#define POLARSSL_HAVE_X86_64
|
|
#endif
|
|
|
|
#if defined(POLARSSL_HAVE_X86_64)
|
|
|
|
/**
|
|
* \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.
|
|
*
|
|
* \return 0 on success (cannot fail)
|
|
*/
|
|
int 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 );
|
|
|
|
#endif /* POLARSSL_HAVE_X86_64 */
|
|
|
|
#endif /* POLARSSL_AESNI_H */
|