repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * Copyright (C) 2007 Michael Niedermayer <michaelni@gmx.at> | |
| 3 | * | |
| 4 | * This file is part of FFmpeg. | |
| 5 | * | |
| 6 | * FFmpeg 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. | |
| 10 | * | |
| 11 | * FFmpeg 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. | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU Lesser General Public | |
| 17 | * License along with FFmpeg; if not, write to the Free Software | |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 19 | */ | |
| 20 | ||
| 21 | #ifndef AVUTIL_SHA_H | |
| 22 | #define AVUTIL_SHA_H | |
| 23 | ||
| 24 | #include <stdint.h> | |
| 25 | ||
| 26 | #include "attributes.h" | |
| 27 | #include "version.h" | |
| 28 | ||
| 29 | /** | |
| 30 | * @defgroup lavu_sha SHA | |
| 31 | * @ingroup lavu_crypto | |
| 32 | * @{ | |
| 33 | */ | |
| 34 | ||
| 35 | extern const int av_sha_size; | |
| 36 | ||
| 37 | struct AVSHA; | |
| 38 | ||
| 39 | /** | |
| 40 | * Allocate an AVSHA context. | |
| 41 | */ | |
| 42 | struct AVSHA *av_sha_alloc(void); | |
| 43 | ||
| 44 | /** | |
| 45 | * Initialize SHA-1 or SHA-2 hashing. | |
| 46 | * | |
| 47 | * @param context pointer to the function context (of size av_sha_size) | |
| 48 | * @param bits number of bits in digest (SHA-1 - 160 bits, SHA-2 224 or 256 bits) | |
| 49 | * @return zero if initialization succeeded, -1 otherwise | |
| 50 | */ | |
| 51 | int av_sha_init(struct AVSHA* context, int bits); | |
| 52 | ||
| 53 | /** | |
| 54 | * Update hash value. | |
| 55 | * | |
| 56 | * @param context hash function context | |
| 57 | * @param data input data to update hash with | |
| 58 | * @param len input data length | |
| 59 | */ | |
| 60 | void av_sha_update(struct AVSHA* context, const uint8_t* data, unsigned int len); | |
| 61 | ||
| 62 | /** | |
| 63 | * Finish hashing and output digest value. | |
| 64 | * | |
| 65 | * @param context hash function context | |
| 66 | * @param digest buffer where output digest value is stored | |
| 67 | */ | |
| 68 | void av_sha_final(struct AVSHA* context, uint8_t *digest); | |
| 69 | ||
| 70 | /** | |
| 71 | * @} | |
| 72 | */ | |
| 73 | ||
| 74 | #endif /* AVUTIL_SHA_H */ |