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 4087c47043cb7b8b51e69f1de47ab6a2bccead3d)
174 lines
4.5 KiB
C
174 lines
4.5 KiB
C
/**
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* \file md2.h
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*
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* \brief MD2 message digest algorithm (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_MD2_H
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#define POLARSSL_MD2_H
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#include "config.h"
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#include <string.h>
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#define POLARSSL_ERR_MD2_FILE_IO_ERROR -0x0070 /**< Read/write error in file. */
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#if !defined(POLARSSL_MD2_ALT)
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// Regular implementation
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//
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/**
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* \brief MD2 context structure
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*/
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typedef struct
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{
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unsigned char cksum[16]; /*!< checksum of the data block */
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unsigned char state[48]; /*!< intermediate digest state */
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unsigned char buffer[16]; /*!< data block being processed */
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unsigned char ipad[16]; /*!< HMAC: inner padding */
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unsigned char opad[16]; /*!< HMAC: outer padding */
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size_t left; /*!< amount of data in buffer */
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}
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md2_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 MD2 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 md2_starts( md2_context *ctx );
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/**
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* \brief MD2 process buffer
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*
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* \param ctx MD2 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 md2_update( md2_context *ctx, const unsigned char *input, size_t ilen );
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/**
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* \brief MD2 final digest
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*
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* \param ctx MD2 context
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* \param output MD2 checksum result
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*/
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void md2_finish( md2_context *ctx, unsigned char output[16] );
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#ifdef __cplusplus
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}
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#endif
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#else /* POLARSSL_MD2_ALT */
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#include "md2_alt.h"
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#endif /* POLARSSL_MD2_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 = MD2( 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 MD2 checksum result
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*/
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void md2( const unsigned char *input, size_t ilen, unsigned char output[16] );
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/**
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* \brief Output = MD2( file contents )
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*
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* \param path input file name
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* \param output MD2 checksum result
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*
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* \return 0 if successful, or POLARSSL_ERR_MD2_FILE_IO_ERROR
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*/
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int md2_file( const char *path, unsigned char output[16] );
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/**
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* \brief MD2 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 md2_hmac_starts( md2_context *ctx, const unsigned char *key, size_t keylen );
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/**
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* \brief MD2 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 md2_hmac_update( md2_context *ctx, const unsigned char *input, size_t ilen );
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/**
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* \brief MD2 HMAC final digest
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*
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* \param ctx HMAC context
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* \param output MD2 HMAC checksum result
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*/
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void md2_hmac_finish( md2_context *ctx, unsigned char output[16] );
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/**
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* \brief MD2 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 md2_hmac_reset( md2_context *ctx );
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/**
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* \brief Output = HMAC-MD2( 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-MD2 result
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*/
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void md2_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 md2_self_test( int verbose );
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/* Internal use */
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void md2_process( md2_context *ctx );
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#ifdef __cplusplus
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}
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#endif
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#endif /* md2.h */
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