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/* ctc_aes.h
*
* Copyright (C) 2006-2011 Sawtooth Consulting Ltd.
*
* This file is part of CyaSSL.
*
* CyaSSL 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.
*
* CyaSSL 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#ifndef NO_AES
#ifndef CTAO_CRYPT_AES_H
#define CTAO_CRYPT_AES_H
#include "types.h"
#ifdef CYASSL_AESNI
#include <wmmintrin.h>
#if !defined (ALIGN16)
#if defined (__GNUC__)
#define ALIGN16 __attribute__ ( (aligned (16)))
#elif defined(_MSC_VER)
#define ALIGN16 __declspec (align (16))
#else
#define ALIGN16
#endif
#endif
#endif /* CYASSL_AESNI */
#if !defined (ALIGN16)
#define ALIGN16
#endif
#ifdef __cplusplus
extern "C" {
#endif
enum {
AES_ENCRYPTION = 0,
AES_DECRYPTION = 1,
AES_BLOCK_SIZE = 16
};
typedef struct Aes {
/* AESNI needs key first, rounds 2nd, not sure why yet */
ALIGN16 word32 key[60];
word32 rounds;
ALIGN16 word32 reg[AES_BLOCK_SIZE / sizeof(word32)]; /* for CBC mode */
ALIGN16 word32 tmp[AES_BLOCK_SIZE / sizeof(word32)]; /* same */
} Aes;
int AesSetKey(Aes* aes, const byte* key, word32 len, const byte* iv, int dir);
void AesCbcEncrypt(Aes* aes, byte* out, const byte* in, word32 sz);
void AesCbcDecrypt(Aes* aes, byte* out, const byte* in, word32 sz);
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* CTAO_CRYPT_AES_H */
#endif /* NO_AES */
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