101 lines
2.6 KiB
C
101 lines
2.6 KiB
C
/*
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* Copyright (c) 1997, 1998, 1999, 2000, 2002 Virtual Unlimited B.V.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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/*!\file sha1.h
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* \brief SHA-1 hash function, headers.
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* \author Bob Deblier <bob.deblier@pandora.be>
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* \ingroup HASH_m HASH_sha1_m
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*/
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#ifndef _SHA1_H
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#define _SHA1_H
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#include "beecrypt.h"
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/** \ingroup HASH_sha1_m
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*/
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typedef struct
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{
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uint32_t h[5];
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uint32_t data[80];
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#if (MP_WBITS == 64)
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mpw length[1];
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#elif (MP_WBITS == 32)
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mpw length[2];
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#else
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# error
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#endif
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uint32_t offset;
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} sha1Param;
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** \ingroup HASH_sha1_m
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* Holds the full API description of the SHA-1 algorithm.
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*/
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/*@observer@*/ /*@unchecked@*/
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extern BEECRYPTAPI const hashFunction sha1;
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/** \ingroup HASH_sha1_m
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* This function performs the SHA-1 hash algorithm on 64 byte blocks of data.
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* @param sp hash parameter block
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*/
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BEECRYPTAPI
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void sha1Process(sha1Param* sp)
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/*@modifies sp @*/;
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/** \ingroup HASH_sha1_m
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* This function resets the parameter block so that it's ready for a new hash.
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* @param sp hash parameter block
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* @return 0 on success
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*/
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BEECRYPTAPI /*@unused@*/
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int sha1Reset (sha1Param* sp)
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/*@modifies sp @*/;
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/** \ingroup HASH_sha1_m
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* This function should be used to pass successive blocks of data to be hashed.
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* @param sp hash parameter block
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* @param *data bytes to hash
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* @param size no. of bytes to hash
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* @return 0 on success
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*/
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BEECRYPTAPI /*@unused@*/
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int sha1Update (sha1Param* sp, const byte* data, size_t size)
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/*@modifies sp @*/;
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/** \ingroup HASH_sha1_m
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* This function finishes the current hash computation, returning the digest
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* value in \a digest.
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* @param sp hash parameter block
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* @retval *digest 20 byte SHA-1 digest
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* @return 0 on success
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*/
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BEECRYPTAPI /*@unused@*/
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int sha1Digest (sha1Param* sp, /*@out@*/ byte* digest)
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/*@modifies sp, digest @*/;
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#ifdef __cplusplus
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}
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#endif
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#endif
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