FFmpeg 4.2.2
md5.h
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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/**
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
44extern const int av_md5_size;
45
46struct AVMD5;
47
48/**
49 * Allocate an AVMD5 context.
50 */
51struct 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 */
58void 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
68void av_md5_update(struct AVMD5 *ctx, const uint8_t *src, int len);
69#else
70void 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 */
79void 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
89void av_md5_sum(uint8_t *dst, const uint8_t *src, const int len);
90#else
91void 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 */
Macro definitions for various function/variable attributes.
void av_md5_init(struct AVMD5 *ctx)
Initialize MD5 hashing.
const int av_md5_size
void av_md5_final(struct AVMD5 *ctx, uint8_t *dst)
Finish hashing and output digest value.
struct AVMD5 * av_md5_alloc(void)
Allocate an AVMD5 context.
void av_md5_sum(uint8_t *dst, const uint8_t *src, const int len)
Hash an array of data.
void av_md5_update(struct AVMD5 *ctx, const uint8_t *src, int len)
Update hash value.
swscale version macros