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https://github.com/moparisthebest/pacman
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66 lines
2.0 KiB
C
66 lines
2.0 KiB
C
/*
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* SHA-224 and SHA-256 cryptographic hash function
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*
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* Copyright (C) 2006-2010, Brainspark B.V.
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*
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* This file is part of PolarSSL (http://www.polarssl.org)
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* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _SHA2_H
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#define _SHA2_H
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#include <string.h>
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/**
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* \brief SHA-256 context structure
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*/
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typedef struct
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{
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unsigned long total[2]; /*!< number of bytes processed */
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unsigned long state[8]; /*!< intermediate digest state */
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unsigned char buffer[64]; /*!< data block being processed */
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int is224; /*!< 0 => SHA-256, else SHA-224 */
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}
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sha2_context;
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/**
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* \brief Output = SHA-256( input buffer )
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*
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* \param input buffer holding the data
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* \param ilen length of the input data
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* \param output SHA-224/256 checksum result
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* \param is224 0 = use SHA256, 1 = use SHA224
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*/
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void sha2( const unsigned char *input, size_t ilen,
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unsigned char output[32], int is224 );
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/**
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* \brief Output = SHA-256( file contents )
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*
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* \param path input file name
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* \param output SHA-224/256 checksum result
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* \param is224 0 = use SHA256, 1 = use SHA224
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*
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* \return 0 if successful, 1 if fopen failed,
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* or 2 if fread failed
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*/
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int sha2_file( const char *path, unsigned char output[32], int is224 );
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#endif /* sha2.h */
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