forked from len0rd/rockbox
ca5bb76d2b
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18012 a1c6a512-1295-4272-9138-f99709370657
120 lines
3.1 KiB
C
120 lines
3.1 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/beecrypt.h"
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#include "beecrypt/sha1opt.h"
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/*!\brief Holds all the parameters necessary for the SHA-1 algorithm.
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* \ingroup HASH_sha1_m
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*/
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#ifdef __cplusplus
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struct BEECRYPTAPI sha1Param
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#else
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struct _sha1Param
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#endif
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{
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/*!\var h
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*/
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uint32_t h[5];
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/*!\var data
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*/
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uint32_t data[80];
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/*!\var length
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* \brief Multi-precision integer counter for the bits that have been
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* processed so far.
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*/
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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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/*!\var offset
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* \brief Offset into \a data; points to the place where new data will be
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* copied before it is processed.
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*/
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uint32_t offset;
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};
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#ifndef __cplusplus
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typedef struct _sha1Param sha1Param;
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*!\var sha1
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* \brief Holds the full API description of the SHA-1 algorithm.
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*/
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extern BEECRYPTAPI const hashFunction sha1;
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/*!\fn void sha1Process(sha1Param* sp)
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* \brief This function performs the core of the SHA-1 hash algorithm; it
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* processes a block of 64 bytes.
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* \param sp The hash function's parameter block.
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*/
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BEECRYPTAPI
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void sha1Process(sha1Param* sp);
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/*!\fn int sha1Reset(sha1Param* sp)
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* \brief This function resets the parameter block so that it's ready for a
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* new hash.
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* \param sp The hash function's parameter block.
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* \retval 0 on success.
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*/
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BEECRYPTAPI
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int sha1Reset (sha1Param* sp);
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/*!\fn int sha1Update(sha1Param* sp, const byte* data, size_t size)
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* \brief This function should be used to pass successive blocks of data
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* to be hashed.
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* \param sp The hash function's parameter block.
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* \param data
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* \param size
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* \retval 0 on success.
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*/
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BEECRYPTAPI
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int sha1Update (sha1Param* sp, const byte* data, size_t size);
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/*!\fn int sha1Digest(sha1Param* sp, byte* digest)
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* \brief This function finishes the current hash computation and copies
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* the digest value into \a digest.
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* \param sp The hash function's parameter block.
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* \param digest The place to store the 20-byte digest.
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* \retval 0 on success.
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*/
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BEECRYPTAPI
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int sha1Digest (sha1Param* sp, byte* 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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