mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-07 11:13:41 +02:00
a240097ecd
Announced in e435beb1ea.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
/*
|
|
* Copyright (C) 2007 Michael Niedermayer <michaelni@gmx.at>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* @ingroup lavu_sha
|
|
* Public header for SHA-1 & SHA-256 hash function implementations.
|
|
*/
|
|
|
|
#ifndef AVUTIL_SHA_H
|
|
#define AVUTIL_SHA_H
|
|
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
|
|
#include "attributes.h"
|
|
#include "version.h"
|
|
|
|
/**
|
|
* @defgroup lavu_sha SHA
|
|
* @ingroup lavu_hash
|
|
* SHA-1 and SHA-256 (Secure Hash Algorithm) hash function implementations.
|
|
*
|
|
* This module supports the following SHA hash functions:
|
|
*
|
|
* - SHA-1: 160 bits
|
|
* - SHA-224: 224 bits, as a variant of SHA-2
|
|
* - SHA-256: 256 bits, as a variant of SHA-2
|
|
*
|
|
* @see For SHA-384, SHA-512, and variants thereof, see @ref lavu_sha512.
|
|
*
|
|
* @{
|
|
*/
|
|
|
|
extern const int av_sha_size;
|
|
|
|
struct AVSHA;
|
|
|
|
/**
|
|
* Allocate an AVSHA context.
|
|
*/
|
|
struct AVSHA *av_sha_alloc(void);
|
|
|
|
/**
|
|
* Initialize SHA-1 or SHA-2 hashing.
|
|
*
|
|
* @param context pointer to the function context (of size av_sha_size)
|
|
* @param bits number of bits in digest (SHA-1 - 160 bits, SHA-2 224 or 256 bits)
|
|
* @return zero if initialization succeeded, -1 otherwise
|
|
*/
|
|
int av_sha_init(struct AVSHA* context, int bits);
|
|
|
|
/**
|
|
* Update hash value.
|
|
*
|
|
* @param ctx hash function context
|
|
* @param data input data to update hash with
|
|
* @param len input data length
|
|
*/
|
|
void av_sha_update(struct AVSHA *ctx, const uint8_t *data, size_t len);
|
|
|
|
/**
|
|
* Finish hashing and output digest value.
|
|
*
|
|
* @param context hash function context
|
|
* @param digest buffer where output digest value is stored
|
|
*/
|
|
void av_sha_final(struct AVSHA* context, uint8_t *digest);
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
#endif /* AVUTIL_SHA_H */
|