2 * Copyright (C) 2007 Michael Niedermayer <michaelni@gmx.at>
3 * Copyright (C) 2013 James Almer <jamrial@gmail.com>
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 * @ingroup lavu_sha512
25 * Public header for SHA-512 implementation.
28 #ifndef AVUTIL_SHA512_H
29 #define AVUTIL_SHA512_H
34 #include "attributes.h"
38 * @defgroup lavu_sha512 SHA-512
40 * SHA-512 (Secure Hash Algorithm) hash function implementations.
42 * This module supports the following SHA-2 hash functions:
44 * - SHA-512/224: 224 bits
45 * - SHA-512/256: 256 bits
49 * @see For SHA-1, SHA-256, and variants thereof, see @ref lavu_sha.
54 extern const int av_sha512_size;
59 * Allocate an AVSHA512 context.
61 struct AVSHA512 *av_sha512_alloc(void);
64 * Initialize SHA-2 512 hashing.
66 * @param context pointer to the function context (of size av_sha512_size)
67 * @param bits number of bits in digest (224, 256, 384 or 512 bits)
68 * @return zero if initialization succeeded, -1 otherwise
70 int av_sha512_init(struct AVSHA512* context, int bits);
75 * @param context hash function context
76 * @param data input data to update hash with
77 * @param len input data length
79 #if FF_API_CRYPTO_SIZE_T
80 void av_sha512_update(struct AVSHA512* context, const uint8_t* data, unsigned int len);
82 void av_sha512_update(struct AVSHA512* context, const uint8_t* data, size_t len);
86 * Finish hashing and output digest value.
88 * @param context hash function context
89 * @param digest buffer where output digest value is stored
91 void av_sha512_final(struct AVSHA512* context, uint8_t *digest);
97 #endif /* AVUTIL_SHA512_H */