1 /* 2 * copyright (c) 2006 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 /** 22 * @file 23 * @ingroup lavu_md5 24 * Public header for MD5 hash function implementation. 25 */ 26 27 #ifndef AVUTIL_MD5_H 28 #define AVUTIL_MD5_H 29 30 #include <stddef.h> 31 #include <stdint.h> 32 33 #include "attributes.h" 34 #include "version.h" 35 36 /** 37 * @defgroup lavu_md5 MD5 38 * @ingroup lavu_hash 39 * MD5 hash function implementation. 40 * 41 * @{ 42 */ 43 44 extern const int av_md5_size; 45 46 struct AVMD5; 47 48 /** 49 * Allocate an AVMD5 context. 50 */ 51 struct AVMD5 *av_md5_alloc(void); 52 53 /** 54 * Initialize MD5 hashing. 55 * 56 * @param ctx pointer to the function context (of size av_md5_size) 57 */ 58 void av_md5_init(struct AVMD5 *ctx); 59 60 /** 61 * Update hash value. 62 * 63 * @param ctx hash function context 64 * @param src input data to update hash with 65 * @param len input data length 66 */ 67 #if FF_API_CRYPTO_SIZE_T 68 void av_md5_update(struct AVMD5 *ctx, const uint8_t *src, int len); 69 #else 70 void av_md5_update(struct AVMD5 *ctx, const uint8_t *src, size_t len); 71 #endif 72 73 /** 74 * Finish hashing and output digest value. 75 * 76 * @param ctx hash function context 77 * @param dst buffer where output digest value is stored 78 */ 79 void av_md5_final(struct AVMD5 *ctx, uint8_t *dst); 80 81 /** 82 * Hash an array of data. 83 * 84 * @param dst The output buffer to write the digest into 85 * @param src The data to hash 86 * @param len The length of the data, in bytes 87 */ 88 #if FF_API_CRYPTO_SIZE_T 89 void av_md5_sum(uint8_t *dst, const uint8_t *src, const int len); 90 #else 91 void av_md5_sum(uint8_t *dst, const uint8_t *src, size_t len); 92 #endif 93 94 /** 95 * @} 96 */ 97 98 #endif /* AVUTIL_MD5_H */ 99