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  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 */
  82.