/** * \file sha1.h * * Based on XySSL: Copyright (C) 2006-2008 Christophe Devine * * Copyright (C) 2009 Paul Bakker * * 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. */ /* $Cambridge: exim/src/src/pdkim/sha1.h,v 1.2 2009/06/10 07:34:05 tom Exp $ */ #ifndef POLARSSL_SHA1_H #define POLARSSL_SHA1_H /** * \brief SHA-1 context structure */ #ifndef HAVE_SHA1_CONTEXT #define HAVE_SHA1_CONTEXT typedef struct sha1_context sha1_context; #endif struct sha1_context { unsigned long total[2]; /*!< number of bytes processed */ unsigned long state[5]; /*!< 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 */ }; #ifdef __cplusplus extern "C" { #endif /** * \brief SHA-1 context setup * * \param ctx context to be initialized */ void sha1_starts( sha1_context *ctx ); /** * \brief SHA-1 process buffer * * \param ctx SHA-1 context * \param input buffer holding the data * \param ilen length of the input data */ void sha1_update( sha1_context *ctx, unsigned char *input, int ilen ); /** * \brief SHA-1 final digest * * \param ctx SHA-1 context * \param output SHA-1 checksum result */ void sha1_finish( sha1_context *ctx, unsigned char output[20] ); /** * \brief Output = SHA-1( input buffer ) * * \param input buffer holding the data * \param ilen length of the input data * \param output SHA-1 checksum result */ void sha1_oneshot( unsigned char *input, int ilen, unsigned char output[20] ); /** * \brief Output = SHA-1( file contents ) * * \param path input file name * \param output SHA-1 checksum result * * \return 0 if successful, 1 if fopen failed, * or 2 if fread failed */ int sha1_file( char *path, unsigned char output[20] ); /** * \brief SHA-1 HMAC context setup * * \param ctx HMAC context to be initialized * \param key HMAC secret key * \param keylen length of the HMAC key */ void sha1_hmac_starts( sha1_context *ctx, unsigned char *key, int keylen ); /** * \brief SHA-1 HMAC process buffer * * \param ctx HMAC context * \param input buffer holding the data * \param ilen length of the input data */ void sha1_hmac_update( sha1_context *ctx, unsigned char *input, int ilen ); /** * \brief SHA-1 HMAC final digest * * \param ctx HMAC context * \param output SHA-1 HMAC checksum result */ void sha1_hmac_finish( sha1_context *ctx, unsigned char output[20] ); /** * \brief Output = HMAC-SHA-1( 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-SHA-1 result */ void sha1_hmac( unsigned char *key, int keylen, unsigned char *input, int ilen, unsigned char output[20] ); #ifdef __cplusplus } #endif #endif /* sha1.h */