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| Rev | Author | Line No. | Line |
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| 4349 | Serge | 1 | /* |
| 2 | * copyright (c) 2007 Michael Niedermayer |
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| 3 | * |
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| 4 | * This file is part of FFmpeg. |
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| 5 | * |
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| 6 | * FFmpeg is free software; you can redistribute it and/or |
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| 7 | * modify it under the terms of the GNU Lesser General Public |
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| 8 | * License as published by the Free Software Foundation; either |
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| 9 | * version 2.1 of the License, or (at your option) any later version. |
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| 10 | * |
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| 11 | * FFmpeg is distributed in the hope that it will be useful, |
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 14 | * Lesser General Public License for more details. |
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| 15 | * |
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| 16 | * You should have received a copy of the GNU Lesser General Public |
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| 17 | * License along with FFmpeg; if not, write to the Free Software |
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| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 19 | */ |
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| 20 | |||
| 21 | #ifndef AVUTIL_AES_H |
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| 22 | #define AVUTIL_AES_H |
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| 23 | |||
| 24 | #include |
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| 25 | |||
| 26 | #include "attributes.h" |
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| 27 | #include "version.h" |
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| 28 | |||
| 29 | /** |
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| 30 | * @defgroup lavu_aes AES |
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| 31 | * @ingroup lavu_crypto |
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| 32 | * @{ |
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| 33 | */ |
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| 34 | |||
| 35 | extern const int av_aes_size; |
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| 36 | |||
| 37 | struct AVAES; |
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| 38 | |||
| 39 | /** |
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| 40 | * Allocate an AVAES context. |
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| 41 | */ |
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| 42 | struct AVAES *av_aes_alloc(void); |
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| 43 | |||
| 44 | /** |
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| 45 | * Initialize an AVAES context. |
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| 46 | * @param key_bits 128, 192 or 256 |
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| 47 | * @param decrypt 0 for encryption, 1 for decryption |
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| 48 | */ |
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| 49 | int av_aes_init(struct AVAES *a, const uint8_t *key, int key_bits, int decrypt); |
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| 50 | |||
| 51 | /** |
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| 52 | * Encrypt or decrypt a buffer using a previously initialized context. |
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| 53 | * @param count number of 16 byte blocks |
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| 54 | * @param dst destination array, can be equal to src |
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| 55 | * @param src source array, can be equal to dst |
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| 56 | * @param iv initialization vector for CBC mode, if NULL then ECB will be used |
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| 57 | * @param decrypt 0 for encryption, 1 for decryption |
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| 58 | */ |
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| 59 | void av_aes_crypt(struct AVAES *a, uint8_t *dst, const uint8_t *src, int count, uint8_t *iv, int decrypt); |
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| 60 | |||
| 61 | /** |
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| 62 | * @} |
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| 63 | */ |
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| 64 | |||
| 65 | #endif /* AVUTIL_AES_H */ |