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/* gost.h
* Copyright (C) 1998 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of 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.
*
* GnuPG 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 a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#ifndef G10_GOST_H
#define G10_GOST_H
#include "types.h"
#define GOST_KEYSIZE 16
#define GOST_BLOCKSIZE 8
#define GOST_ROUNDS 8
#define GOST_KEYLEN (6*GOST_ROUNDS+4)
typedef struct {
u16 ek[GOST_KEYLEN];
u16 dk[GOST_KEYLEN];
byte iv[GOST_BLOCKSIZE];
} GOST_context;
void gost_setkey( GOST_context *c, byte *key );
void gost_setiv( GOST_context *c, byte *iv );
void gost_encode( GOST_context *c, byte *out, byte *in, unsigned nblocks );
void gost_decode( GOST_context *c, byte *out, byte *in, unsigned nblocks );
void gost_encode_cfb( GOST_context *c, byte *outbuf,
byte *inbuf, unsigned nbytes);
void gost_decode_cfb( GOST_context *c, byte *outbuf,
byte *inbuf, unsigned nbytes);
#endif /*G10_GOST_H*/
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