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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 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_SHA_H |
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| 22 | #define AVUTIL_SHA_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_sha SHA |
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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_sha_size; |
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| 36 | |||
| 37 | struct AVSHA; |
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| 38 | |||
| 39 | /** |
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| 40 | * Allocate an AVSHA context. |
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| 41 | */ |
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| 42 | struct AVSHA *av_sha_alloc(void); |
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| 43 | |||
| 44 | /** |
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| 45 | * Initialize SHA-1 or SHA-2 hashing. |
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| 46 | * |
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| 47 | * @param context pointer to the function context (of size av_sha_size) |
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| 48 | * @param bits number of bits in digest (SHA-1 - 160 bits, SHA-2 224 or 256 bits) |
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| 49 | * @return zero if initialization succeeded, -1 otherwise |
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| 50 | */ |
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| 51 | int av_sha_init(struct AVSHA* context, int bits); |
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| 52 | |||
| 53 | /** |
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| 54 | * Update hash value. |
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| 55 | * |
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| 56 | * @param context hash function context |
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| 57 | * @param data input data to update hash with |
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| 58 | * @param len input data length |
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| 59 | */ |
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| 60 | void av_sha_update(struct AVSHA* context, const uint8_t* data, unsigned int len); |
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| 61 | |||
| 62 | /** |
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| 63 | * Finish hashing and output digest value. |
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| 64 | * |
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| 65 | * @param context hash function context |
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| 66 | * @param digest buffer where output digest value is stored |
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| 67 | */ |
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| 68 | void av_sha_final(struct AVSHA* context, uint8_t *digest); |
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| 69 | |||
| 70 | /** |
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| 71 | * @} |
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| 72 | */ |
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| 73 | |||
| 74 | #endif /* AVUTIL_SHA_H */ |