mirror of
https://github.com/yuzu-emu/mbedtls.git
synced 2024-11-22 22:45:48 +01:00
0a971b5dc8
New padding checking is unbiased on correct or incorrect padding and
has no branch prediction timing differences.
The additional MAC checks further straighten out the timing differences.
(cherry picked from commit e47b34bdc8)
Conflicts:
ChangeLog
library/ssl_tls.c
158 lines
4.2 KiB
C
158 lines
4.2 KiB
C
/**
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* \file md5.h
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*
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* \brief MD5 message digest algorithm (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 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_MD5_H
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#define POLARSSL_MD5_H
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#include <string.h>
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#define POLARSSL_ERR_MD5_FILE_IO_ERROR -0x0074 /**< Read/write error in file. */
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/**
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* \brief MD5 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[4]; /*!< 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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md5_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 MD5 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 md5_starts( md5_context *ctx );
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/**
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* \brief MD5 process buffer
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*
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* \param ctx MD5 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 md5_update( md5_context *ctx, const unsigned char *input, size_t ilen );
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/**
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* \brief MD5 final digest
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*
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* \param ctx MD5 context
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* \param output MD5 checksum result
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*/
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void md5_finish( md5_context *ctx, unsigned char output[16] );
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/**
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* \brief Output = MD5( 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 MD5 checksum result
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*/
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void md5( const unsigned char *input, size_t ilen, unsigned char output[16] );
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/**
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* \brief Output = MD5( file contents )
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*
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* \param path input file name
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* \param output MD5 checksum result
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*
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* \return 0 if successful, or POLARSSL_ERR_MD5_FILE_IO_ERROR
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*/
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int md5_file( const char *path, unsigned char output[16] );
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/**
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* \brief MD5 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 md5_hmac_starts( md5_context *ctx,
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const unsigned char *key, size_t keylen );
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/**
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* \brief MD5 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 md5_hmac_update( md5_context *ctx,
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const unsigned char *input, size_t ilen );
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/**
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* \brief MD5 HMAC final digest
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*
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* \param ctx HMAC context
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* \param output MD5 HMAC checksum result
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*/
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void md5_hmac_finish( md5_context *ctx, unsigned char output[16] );
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/**
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* \brief MD5 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 md5_hmac_reset( md5_context *ctx );
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/**
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* \brief Output = HMAC-MD5( 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-MD5 result
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*/
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void md5_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[16] );
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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 md5_self_test( int verbose );
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/* Internal use */
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void md5_process( md5_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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#endif /* md5.h */
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