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/* nettle-meta.h
*
* Information about algorithms.
*/
/* nettle, low-level cryptographics library
*
* Copyright (C) 2002 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_META_H_INCLUDED
#define NETTLE_META_H_INCLUDED
#include <inttypes.h>
/* Ciphers */
typedef void (*nettle_crypt_func)(void *ctx,
unsigned length, uint8_t *dst,
const uint8_t *src);
typedef void (*nettle_set_key_func)(void *ctx,
unsigned length,
const uint8_t *key);
struct nettle_cipher
{
const char *name;
unsigned context_size;
/* Zero for stream ciphers */
unsigned block_size;
/* Suggested key size; other sizes are sometimes possible. */
unsigned key_size;
nettle_set_key_func set_encrypt_key;
nettle_set_key_func set_decrypt_key;
nettle_crypt_func encrypt;
nettle_crypt_func decrypt;
};
#define _NETTLE_CIPHER(name, NAME, keysize) { \
#name #keysize, \
sizeof(struct name##_ctx), \
NAME##_BLOCK_SIZE, \
keysize / 8, \
(nettle_set_key_func) name##_set_key, \
(nettle_set_key_func) name##_set_key, \
(nettle_crypt_func) name##_encrypt, \
(nettle_crypt_func) name##_decrypt, \
}
extern const struct nettle_cipher nettle_aes128;
extern const struct nettle_cipher nettle_aes192;
extern const struct nettle_cipher nettle_aes256;
extern const struct nettle_cipher nettle_arcfour128;
extern const struct nettle_cipher nettle_cast128;
extern const struct nettle_cipher nettle_serpent128;
extern const struct nettle_cipher nettle_serpent192;
extern const struct nettle_cipher nettle_serpent256;
extern const struct nettle_cipher nettle_twofish128;
extern const struct nettle_cipher nettle_twofish192;
extern const struct nettle_cipher nettle_twofish256;
/* Hash algorithm */
typedef void (*nettle_hash_init_func)(void *ctx);
typedef void (*nettle_hash_update_func)(void *ctx,
unsigned length,
const uint8_t *src);
typedef void (*nettle_hash_digest_func)(void *ctx,
unsigned length, uint8_t *dst);
struct nettle_hash
{
const char *name;
/* Size of the context struct */
unsigned context_size;
/* Size of digests */
unsigned digest_size;
/* Internal block size */
unsigned block_size;
nettle_hash_init_func init;
nettle_hash_update_func update;
nettle_hash_digest_func digest;
};
#define _NETTLE_HASH(name, NAME) { \
#name, \
sizeof(struct name##_ctx), \
NAME##_DIGEST_SIZE, \
NAME##_DATA_SIZE, \
(nettle_hash_init_func) name##_init, \
(nettle_hash_update_func) name##_update, \
(nettle_hash_digest_func) name##_digest \
}
extern const struct nettle_hash nettle_md5;
extern const struct nettle_hash nettle_sha1;
extern const struct nettle_hash nettle_sha256;
#endif /* NETTLE_META_H_INCLUDED */
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