| /* |
| * Copyright (C) 2001 Niels Moller |
| * |
| * The nettle 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. |
| * |
| * The nettle 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 the nettle library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
| * MA 02111-1307, USA. |
| */ |
| |
| #ifndef __SHA256_H |
| #define __SHA256_H |
| |
| #include "cltypes.h" |
| |
| #define SHA256_DIGEST_SIZE 32 |
| #define SHA256_DATA_SIZE 64 |
| |
| /* Digest is kept internally as 8 32-bit words. */ |
| #define _SHA256_DIGEST_LENGTH 8 |
| |
| typedef struct sha256_ctx |
| { |
| uint32_t state[_SHA256_DIGEST_LENGTH]; /* State variables */ |
| uint32_t count_low, count_high; /* 64-bit block count */ |
| unsigned char block[SHA256_DATA_SIZE]; /* SHA256 data buffer */ |
| uint32_t index; /* index into buffer */ |
| } SHA256_CTX; |
| |
| void |
| sha256_init(struct sha256_ctx *ctx); |
| |
| void |
| sha256_update(struct sha256_ctx *ctx, const unsigned char *data, uint32_t length); |
| |
| void |
| sha256_final(struct sha256_ctx *ctx); |
| |
| void |
| sha256_digest(const struct sha256_ctx *ctx, unsigned char *digest); |
| |
| #endif |