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/* hash-common.h - Declarations of common code for hash algorithms.

 * Copyright (C) 2008 Free Software Foundation, Inc.

 * This file is part of Libgcrypt.

 * Libgcrypt is free software; you can redistribute it and/or modify

 * it under the terms of the GNU Lesser General Public License as

 * published by the Free Software Foundation; either version 2.1 of

 * the License, or (at your option) any later version.

 * Libgcrypt 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 Lesser General Public License for more details.

 * You should have received a copy of the GNU Lesser General Public

 * License along with this program; if not, see <http://www.gnu.org/licenses/>.

*/

#ifndef GCRY_HASH_COMMON_H

#define GCRY_HASH_COMMON_H

#include "types.h"

const char * _gcry_hash_selftest_check_one

/**/         (int algo,

              int datamode, const void *data, size_t datalen,

              const void *expect, size_t expectlen);

/* Type for the md_write helper function.  */

typedef unsigned int (*_gcry_md_block_write_t) (void *c,

						const unsigned char *blks,

						size_t nblks);

#if (defined(USE_SHA512) || defined(USE_WHIRLPOOL))

/* SHA-512 and Whirlpool needs u64. SHA-512 needs larger buffer. */

# define MD_BLOCK_MAX_BLOCKSIZE 128

# define MD_NBLOCKS_TYPE u64

#else

# define MD_BLOCK_MAX_BLOCKSIZE 64

# define MD_NBLOCKS_TYPE u32

#endif

/* SHA1 needs 2x64 bytes and SHA-512 needs 128 bytes. */

#define MD_BLOCK_CTX_BUFFER_SIZE 128

typedef struct gcry_md_block_ctx

    byte buf[MD_BLOCK_CTX_BUFFER_SIZE];

    MD_NBLOCKS_TYPE nblocks;

    MD_NBLOCKS_TYPE nblocks_high;

    int count;

    unsigned int blocksize_shift;

    _gcry_md_block_write_t bwrite;

} gcry_md_block_ctx_t;

void

_gcry_md_block_write( void *context, const void *inbuf_arg, size_t inlen);

#endif /*GCRY_HASH_COMMON_H*/