mirror of
https://github.com/yuzu-emu/mbedtls.git
synced 2024-12-25 02:25:40 +00:00
90995b5ce3
All symmetric cipher algorithms and hash algorithms now include support
for a POLARSSL_XXX_ALT flag that prevents the definition of the
algorithm context structure and all 'core' functions.
(cherry picked from commit 4087c47043)
189 lines
5 KiB
C
189 lines
5 KiB
C
/**
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* \file sha2.h
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*
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* \brief SHA-224 and SHA-256 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 POLARSSL_SHA2_H
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#define POLARSSL_SHA2_H
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#include "config.h"
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#include <string.h>
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#ifdef _MSC_VER
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#include <basetsd.h>
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typedef UINT32 uint32_t;
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#else
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#include <inttypes.h>
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#endif
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#define POLARSSL_ERR_SHA2_FILE_IO_ERROR -0x0078 /**< Read/write error in file. */
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#if !defined(POLARSSL_SHA2_ALT)
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// Regular implementation
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//
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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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uint32_t total[2]; /*!< number of bytes processed */
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uint32_t state[8]; /*!< 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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int is224; /*!< 0 => SHA-256, else SHA-224 */
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}
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sha2_context;
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* \brief SHA-256 context setup
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*
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* \param ctx context to be initialized
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* \param is224 0 = use SHA256, 1 = use SHA224
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*/
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void sha2_starts( sha2_context *ctx, int is224 );
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/**
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* \brief SHA-256 process buffer
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*
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* \param ctx SHA-256 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 sha2_update( sha2_context *ctx, const unsigned char *input, size_t ilen );
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/**
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* \brief SHA-256 final digest
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*
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* \param ctx SHA-256 context
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* \param output SHA-224/256 checksum result
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*/
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void sha2_finish( sha2_context *ctx, unsigned char output[32] );
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/* Internal use */
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void sha2_process( sha2_context *ctx, const unsigned char data[64] );
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#ifdef __cplusplus
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}
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#endif
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#else /* POLARSSL_SHA2_ALT */
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#include "sha2_alt.h"
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#endif /* POLARSSL_SHA2_ALT */
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#ifdef __cplusplus
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extern "C" {
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#endif
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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, or POLARSSL_ERR_SHA2_FILE_IO_ERROR
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*/
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int sha2_file( const char *path, unsigned char output[32], int is224 );
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/**
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* \brief SHA-256 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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* \param is224 0 = use SHA256, 1 = use SHA224
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*/
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void sha2_hmac_starts( sha2_context *ctx, const unsigned char *key, size_t keylen,
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int is224 );
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/**
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* \brief SHA-256 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 sha2_hmac_update( sha2_context *ctx, const unsigned char *input, size_t ilen );
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/**
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* \brief SHA-256 HMAC final digest
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*
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* \param ctx HMAC context
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* \param output SHA-224/256 HMAC checksum result
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*/
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void sha2_hmac_finish( sha2_context *ctx, unsigned char output[32] );
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/**
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* \brief SHA-256 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 sha2_hmac_reset( sha2_context *ctx );
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/**
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* \brief Output = HMAC-SHA-256( 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-224/256 result
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* \param is224 0 = use SHA256, 1 = use SHA224
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*/
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void sha2_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[32], int is224 );
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/**
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* \brief Checkup routine
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*
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* \return 0 if successful, or 1 if the test failed
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*/
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int sha2_self_test( int verbose );
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#ifdef __cplusplus
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}
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#endif
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#endif /* sha2.h */
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