2 * copyright (c) 2007 Michael Niedermayer <michaelni@gmx.at>
4 * This file is part of Libav.
6 * Libav is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * Libav is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with Libav; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 #include "attributes.h"
30 * @defgroup lavu_aes AES
31 * @ingroup lavu_crypto
35 #if FF_API_CONTEXT_SIZE
36 extern attribute_deprecated const int av_aes_size;
42 * Allocate an AVAES context.
44 struct AVAES *av_aes_alloc(void);
47 * Initialize an AVAES context.
48 * @param key_bits 128, 192 or 256
49 * @param decrypt 0 for encryption, 1 for decryption
51 int av_aes_init(struct AVAES *a, const uint8_t *key, int key_bits, int decrypt);
54 * Encrypt or decrypt a buffer using a previously initialized context.
55 * @param count number of 16 byte blocks
56 * @param dst destination array, can be equal to src
57 * @param src source array, can be equal to dst
58 * @param iv initialization vector for CBC mode, if NULL then ECB will be used
59 * @param decrypt 0 for encryption, 1 for decryption
61 void av_aes_crypt(struct AVAES *a, uint8_t *dst, const uint8_t *src, int count, uint8_t *iv, int decrypt);
67 #endif /* AVUTIL_AES_H */