diff options
author | Niels Möller <nisse@lysator.liu.se> | 2001-10-07 20:50:45 +0200 |
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committer | Niels Möller <nisse@lysator.liu.se> | 2001-10-07 20:50:45 +0200 |
commit | 5d55afabe1a44e976a9e6beae203195eb5f97a4c (patch) | |
tree | 26dec3433c5da7c911445eb18d3e4c8afdff481e /sha.h | |
parent | d812d00ebc76f7584b0743d8ec108826f3a85bf4 (diff) | |
download | nettle-5d55afabe1a44e976a9e6beae203195eb5f97a4c.tar.gz |
* sha.h: Renamed sha1.h to sha.h, and added declarations for
SHA-256.
Rev: src/nettle/sha.h:1.1
Rev: src/nettle/sha1.c:1.5
Rev: src/nettle/sha1.h:1.4(DEAD)
Diffstat (limited to 'sha.h')
-rw-r--r-- | sha.h | 96 |
1 files changed, 96 insertions, 0 deletions
@@ -0,0 +1,96 @@ +/* sha.h + * + * The sha1 and sha256 hash functions. + */ + +/* nettle, low-level cryptographics library + * + * Copyright (C) 2001 Niels Möller + * + * 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 NETTLE_SHA_H_INCLUDED +#define NETTLE_SHA_H_INCLUDED + +#include <inttypes.h> + +/* SHA1 */ + +#define SHA1_DIGEST_SIZE 20 +#define SHA1_DATA_SIZE 64 + +/* Digest is kept internally as 5 32-bit words. */ +#define _SHA1_DIGEST_LENGTH 5 + +struct sha1_ctx +{ + uint32_t digest[_SHA1_DIGEST_LENGTH]; /* Message digest */ + uint32_t count_low, count_high; /* 64-bit block count */ + uint8_t block[SHA1_DATA_SIZE]; /* SHA1 data buffer */ + unsigned int index; /* index into buffer */ +}; + +void +sha1_init(struct sha1_ctx *ctx); + +void +sha1_update(struct sha1_ctx *ctx, + unsigned length, + const uint8_t *data); + +void +sha1_final(struct sha1_ctx *ctx); + +void +sha1_digest(const struct sha1_ctx *ctx, + unsigned length, + uint8_t *digest); + +/* SHA256 */ + +#define SHA256_DIGEST_SIZE 32 +#define SHA256_DATA_SIZE 64 + +/* Digest is kept internally as 8 32-bit words. */ +#define _SHA256_DIGEST_LENGTH 8 + +struct sha256_ctx +{ + uint32_t state[_SHA256_DIGEST_LENGTH]; /* State variables */ + uint32_t count_low, count_high; /* 64-bit block count */ + uint8_t block[SHA256_DATA_SIZE]; /* SHA256 data buffer */ + unsigned int index; /* index into buffer */ +}; + +void +sha256_init(struct sha256_ctx *ctx); + +void +sha256_update(struct sha256_ctx *ctx, + unsigned length, + const uint8_t *data); + +void +sha256_final(struct sha256_ctx *ctx); + +void +sha256_digest(const struct sha256_ctx *ctx, + unsigned length, + uint8_t *digest); + + +#endif /* NETTLE_SHA_H_INCLUDED */ |