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157 lines
4.5 KiB
157 lines
4.5 KiB
/**
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* \file sha1.h
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*
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* \brief SHA-1 cryptographic hash function
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*
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* Copyright (C) 2006-2013, 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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef HMAC_SHA1_H_
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#define HMAC_SHA1_H_
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#include <stdint.h>
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#include <string.h>
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/*
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* 32-bit integer manipulation macros (big endian)
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*/
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#define GET_UINT32_BE(n,b,i) \
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{ \
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(n) = ( (uint32_t) (b)[(i) ] << 24 ) \
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| ( (uint32_t) (b)[(i) + 1] << 16 ) \
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| ( (uint32_t) (b)[(i) + 2] << 8 ) \
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| ( (uint32_t) (b)[(i) + 3] ); \
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}
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#define PUT_UINT32_BE(n,b,i) \
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{ \
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(b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
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(b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
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(b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
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(b)[(i) + 3] = (unsigned char) ( (n) ); \
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}
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/**
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* \brief SHA-1 context structure
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*/
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typedef struct
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{
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uint32_t total[2]; /*!< number of bytes processed */
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uint32_t state[5]; /*!< intermediate digest state */
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unsigned char buffer[64]; /*!< data block being processed */
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unsigned char ipad[64]; /*!< HMAC: inner padding */
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unsigned char opad[64]; /*!< HMAC: outer padding */
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}
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ss_sha1_context;
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/**
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* \brief SHA-1 context setup
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*
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* \param ctx context to be initialized
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*/
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void ss_sha1_starts( ss_sha1_context *ctx );
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/**
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* \brief SHA-1 process buffer
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*
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* \param ctx SHA-1 context
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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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*/
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void ss_sha1_update( ss_sha1_context *ctx, const unsigned char *input, size_t ilen );
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/**
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* \brief SHA-1 final digest
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*
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* \param ctx SHA-1 context
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* \param output SHA-1 checksum result
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*/
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void ss_sha1_finish( ss_sha1_context *ctx, unsigned char output[20] );
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/* Internal use */
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void ss_sha1_process( ss_sha1_context *ctx, const unsigned char data[64] );
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/**
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* \brief Output = SHA-1( 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-1 checksum result
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*/
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void ss_sha1( const unsigned char *input, size_t ilen, unsigned char output[20] );
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/**
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* \brief SHA-1 HMAC context setup
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*
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* \param ctx HMAC context to be initialized
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* \param key HMAC secret key
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* \param keylen length of the HMAC key
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*/
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void ss_sha1_hmac_starts( ss_sha1_context *ctx, const unsigned char *key, size_t keylen );
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/**
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* \brief SHA-1 HMAC process buffer
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*
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* \param ctx HMAC context
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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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*/
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void ss_sha1_hmac_update( ss_sha1_context *ctx, const unsigned char *input, size_t ilen );
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/**
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* \brief SHA-1 HMAC final digest
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*
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* \param ctx HMAC context
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* \param output SHA-1 HMAC checksum result
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*/
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void ss_sha1_hmac_finish( ss_sha1_context *ctx, unsigned char output[20] );
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/**
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* \brief SHA-1 HMAC context reset
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*
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* \param ctx HMAC context to be reset
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*/
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void ss_sha1_hmac_reset( ss_sha1_context *ctx );
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/**
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* \brief Output = HMAC-SHA-1( hmac key, input buffer )
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*
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* \param key HMAC secret key
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* \param keylen length of the HMAC key
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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 HMAC-SHA-1 result
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*/
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void ss_sha1_hmac( const unsigned char *key, size_t keylen,
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const unsigned char *input, size_t ilen,
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unsigned char output[20] );
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#endif /* HMAC_SHA1_H_ */
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