/** * \file md4.h * * \brief MD4 message digest algorithm (hash function) * * Copyright (C) 2006-2010, Brainspark B.V. * * This file is part of PolarSSL (http://www.polarssl.org) * Lead Maintainer: Paul Bakker * * All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #ifndef POLARSSL_MD4_H #define POLARSSL_MD4_H #include #define POLARSSL_ERR_MD4_FILE_IO_ERROR -0x0072 /**< Read/write error in file. */ /** * \brief MD4 context structure */ typedef struct { unsigned long total[2]; /*!< number of bytes processed */ unsigned long state[4]; /*!< intermediate digest state */ unsigned char buffer[64]; /*!< data block being processed */ unsigned char ipad[64]; /*!< HMAC: inner padding */ unsigned char opad[64]; /*!< HMAC: outer padding */ } md4_context; #ifdef __cplusplus extern "C" { #endif /** * \brief MD4 context setup * * \param ctx context to be initialized */ void md4_starts( md4_context *ctx ); /** * \brief MD4 process buffer * * \param ctx MD4 context * \param input buffer holding the data * \param ilen length of the input data */ void md4_update( md4_context *ctx, const unsigned char *input, size_t ilen ); /** * \brief MD4 final digest * * \param ctx MD4 context * \param output MD4 checksum result */ void md4_finish( md4_context *ctx, unsigned char output[16] ); /** * \brief Output = MD4( input buffer ) * * \param input buffer holding the data * \param ilen length of the input data * \param output MD4 checksum result */ void md4( const unsigned char *input, size_t ilen, unsigned char output[16] ); /** * \brief Output = MD4( file contents ) * * \param path input file name * \param output MD4 checksum result * * \return 0 if successful, or POLARSSL_ERR_MD4_FILE_IO_ERROR */ int md4_file( const char *path, unsigned char output[16] ); /** * \brief MD4 HMAC context setup * * \param ctx HMAC context to be initialized * \param key HMAC secret key * \param keylen length of the HMAC key */ void md4_hmac_starts( md4_context *ctx, const unsigned char *key, size_t keylen ); /** * \brief MD4 HMAC process buffer * * \param ctx HMAC context * \param input buffer holding the data * \param ilen length of the input data */ void md4_hmac_update( md4_context *ctx, const unsigned char *input, size_t ilen ); /** * \brief MD4 HMAC final digest * * \param ctx HMAC context * \param output MD4 HMAC checksum result */ void md4_hmac_finish( md4_context *ctx, unsigned char output[16] ); /** * \brief MD4 HMAC context reset * * \param ctx HMAC context to be reset */ void md4_hmac_reset( md4_context *ctx ); /** * \brief Output = HMAC-MD4( hmac key, input buffer ) * * \param key HMAC secret key * \param keylen length of the HMAC key * \param input buffer holding the data * \param ilen length of the input data * \param output HMAC-MD4 result */ void md4_hmac( const unsigned char *key, size_t keylen, const unsigned char *input, size_t ilen, unsigned char output[16] ); /** * \brief Checkup routine * * \return 0 if successful, or 1 if the test failed */ int md4_self_test( int verbose ); #ifdef __cplusplus } #endif #endif /* md4.h */