algo_sha256.h

/*
 *  PKCS#11 library for .Net smart cards
 *  Copyright (C) 2007-2009 Gemalto <support@gemalto.com>
 *
 *  This library 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.
 *
 *  This library 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 library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

#ifndef _include_algo_sha256_h
#define _include_algo_sha256_h

#define SHA256_HASH_LENGTH  32
#define SHA256_BLOCK_LENGTH 64

typedef struct algo_sha256_context
{
    u4  total[2];
    u4  processingBuffer[SHA256_BLOCK_LENGTH];
    u4* digest;
    u1* input;
} algo_sha256_context;

extern void algo_sha256_starts(algo_sha256_context* ctx);
extern void algo_sha256_update(algo_sha256_context* ctx, u1* input, u4 length);
extern void algo_sha256_finish(algo_sha256_context* ctx);

#endif