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/* $OpenBSD: gost_local.h,v 1.2 2022/11/26 17:23:18 tb Exp $ */
/*
* Copyright (c) 2014 Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
* Copyright (c) 2005-2006 Cryptocom LTD
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* openssl-core@openssl.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*/
#ifndef HEADER_GOST_LOCAL_H
#define HEADER_GOST_LOCAL_H
#include <openssl/ec.h>
#include <openssl/ecdsa.h>
__BEGIN_HIDDEN_DECLS
/* Internal representation of GOST substitution blocks */
typedef struct {
unsigned char k8[16];
unsigned char k7[16];
unsigned char k6[16];
unsigned char k5[16];
unsigned char k4[16];
unsigned char k3[16];
unsigned char k2[16];
unsigned char k1[16];
} gost_subst_block;
#if defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__)
# define c2l(c,l) ((l)=*((const unsigned int *)(c)), (c)+=4)
# define l2c(l,c) (*((unsigned int *)(c))=(l), (c)+=4)
#else
#define c2l(c,l) (l =(((unsigned long)(*((c)++))) ), \
l|=(((unsigned long)(*((c)++)))<< 8), \
l|=(((unsigned long)(*((c)++)))<<16), \
l|=(((unsigned long)(*((c)++)))<<24))
#define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
*((c)++)=(unsigned char)(((l)>> 8)&0xff), \
*((c)++)=(unsigned char)(((l)>>16)&0xff), \
*((c)++)=(unsigned char)(((l)>>24)&0xff))
#endif
extern void Gost2814789_encrypt(const unsigned char *in, unsigned char *out,
const GOST2814789_KEY *key);
extern void Gost2814789_decrypt(const unsigned char *in, unsigned char *out,
const GOST2814789_KEY *key);
extern void Gost2814789_cryptopro_key_mesh(GOST2814789_KEY *key);
/* GOST 28147-89 key wrapping */
extern int gost_key_unwrap_crypto_pro(int nid,
const unsigned char *keyExchangeKey, const unsigned char *wrappedKey,
unsigned char *sessionKey);
extern int gost_key_wrap_crypto_pro(int nid,
const unsigned char *keyExchangeKey, const unsigned char *ukm,
const unsigned char *sessionKey, unsigned char *wrappedKey);
/* Pkey part */
extern int gost2001_compute_public(GOST_KEY *ec);
extern ECDSA_SIG *gost2001_do_sign(BIGNUM *md, GOST_KEY *eckey);
extern int gost2001_do_verify(BIGNUM *md, ECDSA_SIG *sig, GOST_KEY *ec);
extern int gost2001_keygen(GOST_KEY *ec);
extern int VKO_compute_key(BIGNUM *X, BIGNUM *Y, const GOST_KEY *pkey,
GOST_KEY *priv_key, const BIGNUM *ukm);
extern BIGNUM *GOST_le2bn(const unsigned char *buf, size_t len, BIGNUM *bn);
extern int GOST_bn2le(BIGNUM *bn, unsigned char *buf, int len);
/* GOST R 34.10 parameters */
extern int GostR3410_get_md_digest(int nid);
extern int GostR3410_get_pk_digest(int nid);
extern int GostR3410_256_param_id(const char *value);
extern int GostR3410_512_param_id(const char *value);
__END_HIDDEN_DECLS
#endif /* !HEADER_GOST_LOCAL_H */
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