64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
/* sha1.h
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*
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* The sha1 hash function.
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*/
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/* nettle, low-level cryptographics library
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*
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* Copyright 2001 Niels Moeller
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*
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* The nettle library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or (at your
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* option) any later version.
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*
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* The nettle library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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* License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with the nettle library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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* MA 02111-1307, USA.
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*/
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#ifndef NETTLE_SHA1_H_INCLUDED
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#define NETTLE_SHA1_H_INCLUDED
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#include "../chdr/coretypes.h"
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#define SHA1_DIGEST_SIZE 20
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#define SHA1_DATA_SIZE 64
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/* Digest is kept internally as 4 32-bit words. */
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#define _SHA1_DIGEST_LENGTH 5
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struct sha1_ctx
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{
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UINT32 digest[_SHA1_DIGEST_LENGTH]; /* Message digest */
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UINT32 count_low, count_high; /* 64-bit block count */
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UINT8 block[SHA1_DATA_SIZE]; /* SHA1 data buffer */
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unsigned int index; /* index into buffer */
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};
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void
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sha1_init(struct sha1_ctx *ctx);
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void
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sha1_update(struct sha1_ctx *ctx,
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unsigned length,
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const UINT8 *data);
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void
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sha1_final(struct sha1_ctx *ctx);
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void
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sha1_digest(const struct sha1_ctx *ctx,
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unsigned length,
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UINT8 *digest);
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#endif /* NETTLE_SHA1_H_INCLUDED */
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