66 lines
1.5 KiB
C
66 lines
1.5 KiB
C
/*
|
|
* Copyright (C) 2015 Martin Willi
|
|
* Copyright (C) 2015 revosec AG
|
|
*
|
|
* 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. See <http://www.fsf.org/copyleft/gpl.txt>.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
/**
|
|
* @defgroup aesni_key aesni_key
|
|
* @{ @ingroup aesni
|
|
*/
|
|
|
|
#ifndef AESNI_KEY_H_
|
|
#define AESNI_KEY_H_
|
|
|
|
#include <library.h>
|
|
|
|
#include <wmmintrin.h>
|
|
|
|
/**
|
|
* AES block size, in bytes
|
|
*/
|
|
#define AES_BLOCK_SIZE 16
|
|
|
|
typedef struct aesni_key_t aesni_key_t;
|
|
|
|
/**
|
|
* Key schedule for encryption/decryption using on AES-NI.
|
|
*/
|
|
struct aesni_key_t {
|
|
|
|
/**
|
|
* Destroy a aesni_key_t.
|
|
*/
|
|
void (*destroy)(aesni_key_t *this);
|
|
|
|
/**
|
|
* Number of AES rounds (10, 12, 14)
|
|
*/
|
|
int rounds;
|
|
|
|
/**
|
|
* Key schedule, for each round + the round 0 (whitening)
|
|
*/
|
|
__attribute__((aligned(sizeof(__m128i)))) __m128i schedule[];
|
|
};
|
|
|
|
/**
|
|
* Create a AESNI key schedule instance.
|
|
*
|
|
* @param encrypt TRUE for encryption schedule, FALSE for decryption
|
|
* @param key non-expanded crypto key, 16, 24 or 32 bytes
|
|
* @return key schedule, NULL on invalid key size
|
|
*/
|
|
aesni_key_t *aesni_key_create(bool encrypt, chunk_t key);
|
|
|
|
#endif /** AESNI_KEY_H_ @}*/
|