ffmpeg/libavutil/md5.h

   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 #ifndef AVUTIL_MD5_H
  22 #define AVUTIL_MD5_H
  23
  24 #include <stdint.h>
  25
  26 #include "attributes.h"
  27 #include "version.h"
  28
  29 /**
  30  * @defgroup lavu_md5 MD5
  31  * @ingroup lavu_crypto
  32  * @{
  33  */
  34
  35 extern const int av_md5_size;
  36
  37 struct AVMD5;
  38
  39 /**
  40  * Allocate an AVMD5 context.
  41  */
  42 struct AVMD5 *av_md5_alloc(void);
  43
  44 /**
  45  * Initialize MD5 hashing.
  46  *
  47  * @param ctx pointer to the function context (of size av_md5_size)
  48  */
  49 void av_md5_init(struct AVMD5 *ctx);
  50
  51 /**
  52  * Update hash value.
  53  *
  54  * @param ctx hash function context
  55  * @param src input data to update hash with
  56  * @param len input data length
  57  */
  58 void av_md5_update(struct AVMD5 *ctx, const uint8_t *src, int len);
  59
  60 /**
  61  * Finish hashing and output digest value.
  62  *
  63  * @param ctx hash function context
  64  * @param dst buffer where output digest value is stored
  65  */
  66 void av_md5_final(struct AVMD5 *ctx, uint8_t *dst);
  67
  68 /**
  69  * Hash an array of data.
  70  *
  71  * @param dst The output buffer to write the digest into
  72  * @param src The data to hash
  73  * @param len The length of the data, in bytes
  74  */
  75 void av_md5_sum(uint8_t *dst, const uint8_t *src, const int len);
  76
  77 /**
  78  * @}
  79  */
  80
  81 #endif /* AVUTIL_MD5_H */