| /* |
| * Copyright (C) 2007 Michael Niedermayer <michaelni@gmx.at> |
| * |
| * This file is part of Libav. |
| * |
| * Libav is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * Libav 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 |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with Libav; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #ifndef AVUTIL_SHA_H |
| #define AVUTIL_SHA_H |
| |
| #include <stdint.h> |
| |
| #include "attributes.h" |
| #include "version.h" |
| |
| /** |
| * @defgroup lavu_sha SHA |
| * @ingroup lavu_crypto |
| * @{ |
| */ |
| |
| #if FF_API_CONTEXT_SIZE |
| extern attribute_deprecated const int av_sha_size; |
| #endif |
| |
| struct AVSHA; |
| |
| /** |
| * Allocate an AVSHA context. |
| */ |
| struct AVSHA *av_sha_alloc(void); |
| |
| /** |
| * Initialize SHA-1 or SHA-2 hashing. |
| * |
| * @param context pointer to the function context (of size av_sha_size) |
| * @param bits number of bits in digest (SHA-1 - 160 bits, SHA-2 224 or 256 bits) |
| * @return zero if initialization succeeded, -1 otherwise |
| */ |
| int av_sha_init(struct AVSHA* context, int bits); |
| |
| /** |
| * Update hash value. |
| * |
| * @param context hash function context |
| * @param data input data to update hash with |
| * @param len input data length |
| */ |
| void av_sha_update(struct AVSHA* context, const uint8_t* data, unsigned int len); |
| |
| /** |
| * Finish hashing and output digest value. |
| * |
| * @param context hash function context |
| * @param digest buffer where output digest value is stored |
| */ |
| void av_sha_final(struct AVSHA* context, uint8_t *digest); |
| |
| /** |
| * @} |
| */ |
| |
| #endif /* AVUTIL_SHA_H */ |
