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/*
* Copyright (c) 2010, Intel Corporation
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Intel Corporation nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef _IAESNI_H__
#define _IAESNI_H__
#include <stdlib.h>
#define AES_INSTRCTIONS_CPUID_BIT (1<<25)
//indicates input param
#define _AES_IN
//indicates output param
#define _AES_OUT
//indicates input/output param - based on context
#define _AES_INOUT
//typedef unsigned char UCHAR;
/*#ifndef bool
#define bool BOOL
#endif*/
//test if the processor actually supports the above functions
//executing one the functions below without processor support will cause UD fault
//bool check_for_aes_instructions(void);
#if (__cplusplus)
extern "C" {
#endif
int check_for_aes_instructions(void);
#define ROUND_KEYS_UNALIGNED_TESTING
#ifdef __linux__
#ifdef ROUND_KEYS_UNALIGNED_TESTING
#define DEFINE_ROUND_KEYS \
UCHAR __attribute__ ((aligned (16))) _expandedKey[16*16]; \
UCHAR *expandedKey = _expandedKey + 4; \
#else
#define DEFINE_ROUND_KEYS \
UCHAR __attribute__ ((aligned (16))) _expandedKey[16*16]; \
UCHAR *expandedKey = _expandedKey; \
#endif
#else // if not __linux__
#ifdef ROUND_KEYS_UNALIGNED_TESTING
#define DEFINE_ROUND_KEYS \
__declspec(align(16)) UCHAR _expandedKey[16*16]; \
UCHAR *expandedKey = _expandedKey + 4; \
#else
#define DEFINE_ROUND_KEYS \
__declspec(align(16)) UCHAR _expandedKey[16*16]; \
UCHAR *expandedKey = _expandedKey; \
#endif
#endif
// encryption functions
// plainText is pointer to input stream
// cipherText is pointer to buffer to be filled with encrypted (cipher text) data
// key is pointer to enc key (sizes are 16 bytes for AES-128, 24 bytes for AES-192, 32 for AES-256)
// numBlocks is number of 16 bytes blocks to process - note that encryption is done of full 16 byte blocks
void intel_AES_enc128(_AES_IN UCHAR *plainText, _AES_OUT UCHAR *cipherText, _AES_IN UCHAR *key, _AES_IN size_t numBlocks);
void intel_AES_enc192(_AES_IN UCHAR *plainText, _AES_OUT UCHAR *cipherText, _AES_IN UCHAR *key, _AES_IN size_t numBlocks);
void intel_AES_enc256(_AES_IN UCHAR *plainText, _AES_OUT UCHAR *cipherText, _AES_IN UCHAR *key, _AES_IN size_t numBlocks);
void intel_AES_enc128_CBC(_AES_IN UCHAR *plainText, _AES_OUT UCHAR *cipherText, _AES_IN UCHAR *key, _AES_IN size_t numBlocks, _AES_IN UCHAR *iv);
void intel_AES_enc192_CBC(_AES_IN UCHAR *plainText, _AES_OUT UCHAR *cipherText, _AES_IN UCHAR *key, _AES_IN size_t numBlocks, _AES_IN UCHAR *iv);
void intel_AES_enc256_CBC(_AES_IN UCHAR *plainText, _AES_OUT UCHAR *cipherText, _AES_IN UCHAR *key, _AES_IN size_t numBlocks, _AES_IN UCHAR *iv);
// encryption functions
// cipherText is pointer to encrypted stream
// plainText is pointer to buffer to be filled with original (plain text) data
// key is pointer to enc key (sizes are 16 bytes for AES-128, 24 bytes for AES-192, 32 for AES-256)
// numBlocks is number of 16 bytes blocks to process - note that decryption is done of full 16 byte blocks
void intel_AES_dec128(_AES_IN UCHAR *cipherText, _AES_OUT UCHAR *plainText, _AES_IN UCHAR *key, _AES_IN size_t numBlocks);
void intel_AES_dec192(_AES_IN UCHAR *cipherText, _AES_OUT UCHAR *plainText, _AES_IN UCHAR *key, _AES_IN size_t numBlocks);
void intel_AES_dec256(_AES_IN UCHAR *cipherText, _AES_OUT UCHAR *plainText, _AES_IN UCHAR *key, _AES_IN size_t numBlocks);
void intel_AES_dec128_CBC(_AES_IN UCHAR *cipherText, _AES_OUT UCHAR *plainText, _AES_IN UCHAR *key, _AES_IN size_t numBlocks, _AES_IN UCHAR *iv);
void intel_AES_dec192_CBC(_AES_IN UCHAR *cipherText, _AES_OUT UCHAR *plainText, _AES_IN UCHAR *key, _AES_IN size_t numBlocks, _AES_IN UCHAR *iv);
void intel_AES_dec256_CBC(_AES_IN UCHAR *cipherText, _AES_OUT UCHAR *plainText, _AES_IN UCHAR *key, _AES_IN size_t numBlocks, _AES_IN UCHAR *iv);
void intel_AES_encdec128_CTR(_AES_IN UCHAR *input, _AES_OUT UCHAR *output, _AES_IN UCHAR *key, _AES_IN size_t numBlocks, _AES_IN UCHAR *initial_counter);
void intel_AES_encdec192_CTR(_AES_IN UCHAR *input, _AES_OUT UCHAR *output, _AES_IN UCHAR *key, _AES_IN size_t numBlocks, _AES_IN UCHAR *initial_counter);
void intel_AES_encdec256_CTR(_AES_IN UCHAR *input, _AES_OUT UCHAR *output, _AES_IN UCHAR *key, _AES_IN size_t numBlocks, _AES_IN UCHAR *initial_counter);
#if (__cplusplus)
}
#endif
#endif
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