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/* kuznyechik.h
The GOST R 34.12-2015 (Kuznyechik) cipher function.
Copyright (C) 2017 Dmitry Eremin-Solenikov
This file is part of GNU Nettle.
GNU Nettle is free software: you can redistribute it and/or
modify it under the terms of either:
* the GNU Lesser General Public License as published by the Free
Software Foundation; either version 3 of the License, or (at your
option) any later version.
or
* the GNU General Public License as published by the Free
Software Foundation; either version 2 of the License, or (at your
option) any later version.
or both in parallel, as here.
GNU Nettle 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
General Public License for more details.
You should have received copies of the GNU General Public License and
the GNU Lesser General Public License along with this program. If
not, see https://www.gnu.org/licenses/.
*/
#ifndef GNUTLS_LIB_NETTLE_KUZNYECHIK_H_INCLUDED
# define GNUTLS_LIB_NETTLE_KUZNYECHIK_H_INCLUDED
# include <nettle/nettle-types.h>
# include "config.h"
# ifndef HAVE_NETTLE_KUZNYECHIK_SET_KEY
# ifdef __cplusplus
extern "C" {
# endif
# define kuznyechik_set_key _gnutls_kuznyechik_set_key
# define kuznyechik_set_param _gnutls_kuznyechik_set_param
# define kuznyechik_encrypt _gnutls_kuznyechik_encrypt
# define kuznyechik_decrypt _gnutls_kuznyechik_decrypt
# define KUZNYECHIK_KEY_SIZE 32
# define KUZNYECHIK_SUBKEYS_SIZE (16 * 10)
# define KUZNYECHIK_BLOCK_SIZE 16
struct kuznyechik_ctx {
uint8_t key[KUZNYECHIK_SUBKEYS_SIZE];
uint8_t dekey[KUZNYECHIK_SUBKEYS_SIZE];
};
void
kuznyechik_set_key(struct kuznyechik_ctx *ctx, const uint8_t * key);
void
kuznyechik_encrypt(const struct kuznyechik_ctx *ctx,
size_t length, uint8_t * dst, const uint8_t * src);
void
kuznyechik_decrypt(const struct kuznyechik_ctx *ctx,
size_t length, uint8_t * dst, const uint8_t * src);
# ifdef __cplusplus
}
# endif
# endif
#endif /* GNUTLS_LIB_NETTLE_KUZNYECHIK_H_INCLUDED */
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