misc/winutils/include/libavutil/sha.h
author unc0rr
Tue, 04 Feb 2014 23:53:43 +0400
changeset 10109 91d126fbd7bd
parent 7813 7ac83d79b897
permissions -rw-r--r--
CMake checks for haskell modules needed
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/*
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 * Copyright (C) 2007 Michael Niedermayer <michaelni@gmx.at>
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 *
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 * This file is part of Libav.
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 *
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 * Libav is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * Libav is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with Libav; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#ifndef AVUTIL_SHA_H
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#define AVUTIL_SHA_H
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#include <stdint.h>
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#include "attributes.h"
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#include "version.h"
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/**
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 * @defgroup lavu_sha SHA
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 * @ingroup lavu_crypto
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 * @{
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 */
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#if FF_API_CONTEXT_SIZE
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extern attribute_deprecated const int av_sha_size;
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#endif
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struct AVSHA;
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/**
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 * Allocate an AVSHA context.
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 */
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struct AVSHA *av_sha_alloc(void);
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/**
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 * Initialize SHA-1 or SHA-2 hashing.
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 *
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 * @param context pointer to the function context (of size av_sha_size)
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 * @param bits    number of bits in digest (SHA-1 - 160 bits, SHA-2 224 or 256 bits)
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 * @return        zero if initialization succeeded, -1 otherwise
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 */
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int av_sha_init(struct AVSHA* context, int bits);
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/**
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 * Update hash value.
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 *
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 * @param context hash function context
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 * @param data    input data to update hash with
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 * @param len     input data length
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 */
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void av_sha_update(struct AVSHA* context, const uint8_t* data, unsigned int len);
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/**
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 * Finish hashing and output digest value.
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 *
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 * @param context hash function context
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 * @param digest  buffer where output digest value is stored
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 */
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void av_sha_final(struct AVSHA* context, uint8_t *digest);
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/**
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 * @}
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 */
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#endif /* AVUTIL_SHA_H */