pineapple/externals/libressl/crypto/gost/gostr341001_ameth.c

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/* $OpenBSD: gostr341001_ameth.c,v 1.19 2021/12/26 15:38:49 tb Exp $ */
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/*
* 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.
* ====================================================================
*/
#include <string.h>
#include <openssl/opensslconf.h>
#ifndef OPENSSL_NO_GOST
#include <openssl/bn.h>
#include <openssl/evp.h>
#include <openssl/ec.h>
#include <openssl/err.h>
#include <openssl/x509.h>
#include <openssl/gost.h>
#include "asn1_locl.h"
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#include "evp_locl.h"
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#include "gost_locl.h"
#include "gost_asn1.h"
static void
pkey_free_gost01(EVP_PKEY *key)
{
GOST_KEY_free(key->pkey.gost);
}
/*
* Parses GOST algorithm parameters from X509_ALGOR and
* modifies pkey setting NID and parameters
*/
static int
decode_gost01_algor_params(EVP_PKEY *pkey, const unsigned char **p, int len)
{
int param_nid = NID_undef, digest_nid = NID_undef;
GOST_KEY_PARAMS *gkp = NULL;
EC_GROUP *group;
GOST_KEY *ec;
gkp = d2i_GOST_KEY_PARAMS(NULL, p, len);
if (gkp == NULL) {
GOSTerror(GOST_R_BAD_PKEY_PARAMETERS_FORMAT);
return 0;
}
param_nid = OBJ_obj2nid(gkp->key_params);
digest_nid = OBJ_obj2nid(gkp->hash_params);
GOST_KEY_PARAMS_free(gkp);
ec = pkey->pkey.gost;
if (ec == NULL) {
ec = GOST_KEY_new();
if (ec == NULL) {
GOSTerror(ERR_R_MALLOC_FAILURE);
return 0;
}
if (EVP_PKEY_assign_GOST(pkey, ec) == 0)
return 0;
}
group = EC_GROUP_new_by_curve_name(param_nid);
if (group == NULL) {
GOSTerror(EC_R_EC_GROUP_NEW_BY_NAME_FAILURE);
return 0;
}
EC_GROUP_set_asn1_flag(group, OPENSSL_EC_NAMED_CURVE);
if (GOST_KEY_set_group(ec, group) == 0) {
EC_GROUP_free(group);
return 0;
}
EC_GROUP_free(group);
if (GOST_KEY_set_digest(ec, digest_nid) == 0)
return 0;
return 1;
}
static ASN1_STRING *
encode_gost01_algor_params(const EVP_PKEY *key)
{
ASN1_STRING *params = ASN1_STRING_new();
GOST_KEY_PARAMS *gkp = GOST_KEY_PARAMS_new();
int pkey_param_nid = NID_undef;
if (params == NULL || gkp == NULL) {
GOSTerror(ERR_R_MALLOC_FAILURE);
ASN1_STRING_free(params);
params = NULL;
goto err;
}
pkey_param_nid =
EC_GROUP_get_curve_name(GOST_KEY_get0_group(key->pkey.gost));
gkp->key_params = OBJ_nid2obj(pkey_param_nid);
gkp->hash_params = OBJ_nid2obj(GOST_KEY_get_digest(key->pkey.gost));
/*gkp->cipher_params = OBJ_nid2obj(cipher_param_nid); */
params->length = i2d_GOST_KEY_PARAMS(gkp, &params->data);
if (params->length <= 0) {
GOSTerror(ERR_R_MALLOC_FAILURE);
ASN1_STRING_free(params);
params = NULL;
goto err;
}
params->type = V_ASN1_SEQUENCE;
err:
GOST_KEY_PARAMS_free(gkp);
return params;
}
static int
pub_cmp_gost01(const EVP_PKEY *a, const EVP_PKEY *b)
{
const GOST_KEY *ea = a->pkey.gost;
const GOST_KEY *eb = b->pkey.gost;
const EC_POINT *ka, *kb;
int ret = 0;
if (ea == NULL || eb == NULL)
return 0;
ka = GOST_KEY_get0_public_key(ea);
kb = GOST_KEY_get0_public_key(eb);
if (ka == NULL || kb == NULL)
return 0;
ret = (0 == EC_POINT_cmp(GOST_KEY_get0_group(ea), ka, kb, NULL));
return ret;
}
static int
pkey_size_gost01(const EVP_PKEY *pk)
{
if (GOST_KEY_get_digest(pk->pkey.gost) == NID_id_tc26_gost3411_2012_512)
return 128;
return 64;
}
static int
pkey_bits_gost01(const EVP_PKEY *pk)
{
if (GOST_KEY_get_digest(pk->pkey.gost) == NID_id_tc26_gost3411_2012_512)
return 512;
return 256;
}
static int
pub_decode_gost01(EVP_PKEY *pk, X509_PUBKEY *pub)
{
X509_ALGOR *palg = NULL;
const unsigned char *pubkey_buf = NULL;
const unsigned char *p;
ASN1_OBJECT *palgobj = NULL;
int pub_len;
BIGNUM *X, *Y;
ASN1_OCTET_STRING *octet = NULL;
int len;
int ret;
int ptype = V_ASN1_UNDEF;
ASN1_STRING *pval = NULL;
if (X509_PUBKEY_get0_param(&palgobj, &pubkey_buf, &pub_len, &palg, pub)
== 0)
return 0;
(void)EVP_PKEY_assign_GOST(pk, NULL);
X509_ALGOR_get0(NULL, &ptype, (const void **)&pval, palg);
if (ptype != V_ASN1_SEQUENCE) {
GOSTerror(GOST_R_BAD_KEY_PARAMETERS_FORMAT);
return 0;
}
p = pval->data;
if (decode_gost01_algor_params(pk, &p, pval->length) == 0) {
GOSTerror(GOST_R_BAD_KEY_PARAMETERS_FORMAT);
return 0;
}
octet = d2i_ASN1_OCTET_STRING(NULL, &pubkey_buf, pub_len);
if (octet == NULL) {
GOSTerror(ERR_R_MALLOC_FAILURE);
return 0;
}
len = octet->length / 2;
X = GOST_le2bn(octet->data, len, NULL);
Y = GOST_le2bn(octet->data + len, len, NULL);
ASN1_OCTET_STRING_free(octet);
ret = GOST_KEY_set_public_key_affine_coordinates(pk->pkey.gost, X, Y);
if (ret == 0)
GOSTerror(ERR_R_EC_LIB);
BN_free(X);
BN_free(Y);
return ret;
}
static int
pub_encode_gost01(X509_PUBKEY *pub, const EVP_PKEY *pk)
{
ASN1_OBJECT *algobj = NULL;
ASN1_OCTET_STRING *octet = NULL;
ASN1_STRING *params = NULL;
void *pval = NULL;
unsigned char *buf = NULL, *sptr;
int key_size, ret = 0;
const EC_POINT *pub_key;
BIGNUM *X = NULL, *Y = NULL;
const GOST_KEY *ec = pk->pkey.gost;
int ptype = V_ASN1_UNDEF;
algobj = OBJ_nid2obj(GostR3410_get_pk_digest(GOST_KEY_get_digest(ec)));
if (pk->save_parameters) {
params = encode_gost01_algor_params(pk);
if (params == NULL)
return 0;
pval = params;
ptype = V_ASN1_SEQUENCE;
}
key_size = GOST_KEY_get_size(ec);
pub_key = GOST_KEY_get0_public_key(ec);
if (pub_key == NULL) {
GOSTerror(GOST_R_PUBLIC_KEY_UNDEFINED);
goto err;
}
octet = ASN1_OCTET_STRING_new();
if (octet == NULL) {
GOSTerror(ERR_R_MALLOC_FAILURE);
goto err;
}
ret = ASN1_STRING_set(octet, NULL, 2 * key_size);
if (ret == 0) {
GOSTerror(ERR_R_INTERNAL_ERROR);
goto err;
}
sptr = ASN1_STRING_data(octet);
X = BN_new();
Y = BN_new();
if (X == NULL || Y == NULL) {
GOSTerror(ERR_R_MALLOC_FAILURE);
goto err;
}
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if (EC_POINT_get_affine_coordinates(GOST_KEY_get0_group(ec),
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pub_key, X, Y, NULL) == 0) {
GOSTerror(ERR_R_EC_LIB);
goto err;
}
GOST_bn2le(X, sptr, key_size);
GOST_bn2le(Y, sptr + key_size, key_size);
BN_free(Y);
BN_free(X);
ret = i2d_ASN1_OCTET_STRING(octet, &buf);
ASN1_BIT_STRING_free(octet);
if (ret < 0)
return 0;
return X509_PUBKEY_set0_param(pub, algobj, ptype, pval, buf, ret);
err:
BN_free(Y);
BN_free(X);
ASN1_BIT_STRING_free(octet);
ASN1_STRING_free(params);
return 0;
}
static int
param_print_gost01(BIO *out, const EVP_PKEY *pkey, int indent, ASN1_PCTX *pctx)
{
int param_nid =
EC_GROUP_get_curve_name(GOST_KEY_get0_group(pkey->pkey.gost));
if (BIO_indent(out, indent, 128) == 0)
return 0;
BIO_printf(out, "Parameter set: %s\n", OBJ_nid2ln(param_nid));
if (BIO_indent(out, indent, 128) == 0)
return 0;
BIO_printf(out, "Digest Algorithm: %s\n",
OBJ_nid2ln(GOST_KEY_get_digest(pkey->pkey.gost)));
return 1;
}
static int
pub_print_gost01(BIO *out, const EVP_PKEY *pkey, int indent, ASN1_PCTX *pctx)
{
BN_CTX *ctx = BN_CTX_new();
BIGNUM *X, *Y;
const EC_POINT *pubkey;
const EC_GROUP *group;
if (ctx == NULL) {
GOSTerror(ERR_R_MALLOC_FAILURE);
return 0;
}
BN_CTX_start(ctx);
if ((X = BN_CTX_get(ctx)) == NULL)
goto err;
if ((Y = BN_CTX_get(ctx)) == NULL)
goto err;
pubkey = GOST_KEY_get0_public_key(pkey->pkey.gost);
group = GOST_KEY_get0_group(pkey->pkey.gost);
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if (EC_POINT_get_affine_coordinates(group, pubkey, X, Y, ctx) == 0) {
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GOSTerror(ERR_R_EC_LIB);
goto err;
}
if (BIO_indent(out, indent, 128) == 0)
goto err;
BIO_printf(out, "Public key:\n");
if (BIO_indent(out, indent + 3, 128) == 0)
goto err;
BIO_printf(out, "X:");
BN_print(out, X);
BIO_printf(out, "\n");
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if (BIO_indent(out, indent + 3, 128) == 0)
goto err;
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BIO_printf(out, "Y:");
BN_print(out, Y);
BIO_printf(out, "\n");
BN_CTX_end(ctx);
BN_CTX_free(ctx);
return param_print_gost01(out, pkey, indent, pctx);
err:
BN_CTX_end(ctx);
BN_CTX_free(ctx);
return 0;
}
static int
priv_print_gost01(BIO *out, const EVP_PKEY *pkey, int indent, ASN1_PCTX *pctx)
{
const BIGNUM *key;
if (BIO_indent(out, indent, 128) == 0)
return 0;
BIO_printf(out, "Private key: ");
key = GOST_KEY_get0_private_key(pkey->pkey.gost);
if (key == NULL)
BIO_printf(out, "<undefined)");
else
BN_print(out, key);
BIO_printf(out, "\n");
return pub_print_gost01(out, pkey, indent, pctx);
}
static int
priv_decode_gost01(EVP_PKEY *pk, const PKCS8_PRIV_KEY_INFO *p8inf)
{
const unsigned char *pkey_buf = NULL, *p = NULL;
int priv_len = 0;
BIGNUM *pk_num = NULL;
int ret = 0;
const X509_ALGOR *palg = NULL;
const ASN1_OBJECT *palg_obj = NULL;
ASN1_INTEGER *priv_key = NULL;
GOST_KEY *ec;
int ptype = V_ASN1_UNDEF;
ASN1_STRING *pval = NULL;
if (PKCS8_pkey_get0(&palg_obj, &pkey_buf, &priv_len, &palg, p8inf) == 0) {
GOSTerror(GOST_R_BAD_KEY_PARAMETERS_FORMAT);
return 0;
}
(void)EVP_PKEY_assign_GOST(pk, NULL);
X509_ALGOR_get0(NULL, &ptype, (const void **)&pval, palg);
if (ptype != V_ASN1_SEQUENCE) {
GOSTerror(GOST_R_BAD_KEY_PARAMETERS_FORMAT);
return 0;
}
p = pval->data;
if (decode_gost01_algor_params(pk, &p, pval->length) == 0) {
GOSTerror(GOST_R_BAD_KEY_PARAMETERS_FORMAT);
return 0;
}
p = pkey_buf;
if (V_ASN1_OCTET_STRING == *p) {
/* New format - Little endian octet string */
ASN1_OCTET_STRING *s =
d2i_ASN1_OCTET_STRING(NULL, &p, priv_len);
if (s == NULL) {
GOSTerror(EVP_R_DECODE_ERROR);
ASN1_STRING_free(s);
return 0;
}
pk_num = GOST_le2bn(s->data, s->length, NULL);
ASN1_STRING_free(s);
} else {
priv_key = d2i_ASN1_INTEGER(NULL, &p, priv_len);
if (priv_key == NULL)
return 0;
ret = ((pk_num = ASN1_INTEGER_to_BN(priv_key, NULL)) != NULL);
ASN1_INTEGER_free(priv_key);
if (ret == 0) {
GOSTerror(EVP_R_DECODE_ERROR);
return 0;
}
}
ec = pk->pkey.gost;
if (ec == NULL) {
ec = GOST_KEY_new();
if (ec == NULL) {
BN_free(pk_num);
return 0;
}
if (EVP_PKEY_assign_GOST(pk, ec) == 0) {
BN_free(pk_num);
GOST_KEY_free(ec);
return 0;
}
}
if (GOST_KEY_set_private_key(ec, pk_num) == 0) {
BN_free(pk_num);
return 0;
}
ret = 0;
if (EVP_PKEY_missing_parameters(pk) == 0)
ret = gost2001_compute_public(ec) != 0;
BN_free(pk_num);
return ret;
}
static int
priv_encode_gost01(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pk)
{
ASN1_OBJECT *algobj =
OBJ_nid2obj(GostR3410_get_pk_digest(GOST_KEY_get_digest(pk->pkey.gost)));
ASN1_STRING *params = encode_gost01_algor_params(pk);
unsigned char *priv_buf = NULL;
int priv_len;
ASN1_INTEGER *asn1key = NULL;
if (params == NULL)
return 0;
asn1key = BN_to_ASN1_INTEGER(GOST_KEY_get0_private_key(pk->pkey.gost),
NULL);
if (asn1key == NULL) {
ASN1_STRING_free(params);
return 0;
}
priv_len = i2d_ASN1_INTEGER(asn1key, &priv_buf);
ASN1_INTEGER_free(asn1key);
return PKCS8_pkey_set0(p8, algobj, 0, V_ASN1_SEQUENCE, params, priv_buf,
priv_len);
}
static int
param_encode_gost01(const EVP_PKEY *pkey, unsigned char **pder)
{
ASN1_STRING *params = encode_gost01_algor_params(pkey);
int len;
if (params == NULL)
return 0;
len = params->length;
if (pder != NULL)
memcpy(*pder, params->data, params->length);
ASN1_STRING_free(params);
return len;
}
static int
param_decode_gost01(EVP_PKEY *pkey, const unsigned char **pder, int derlen)
{
ASN1_OBJECT *obj = NULL;
int nid;
GOST_KEY *ec;
EC_GROUP *group;
int ret;
/* New format */
if ((V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED) == **pder)
return decode_gost01_algor_params(pkey, pder, derlen);
/* Compatibility */
if (d2i_ASN1_OBJECT(&obj, pder, derlen) == NULL) {
GOSTerror(ERR_R_MALLOC_FAILURE);
return 0;
}
nid = OBJ_obj2nid(obj);
ASN1_OBJECT_free(obj);
ec = GOST_KEY_new();
if (ec == NULL) {
GOSTerror(ERR_R_MALLOC_FAILURE);
return 0;
}
group = EC_GROUP_new_by_curve_name(nid);
if (group == NULL) {
GOSTerror(EC_R_EC_GROUP_NEW_BY_NAME_FAILURE);
GOST_KEY_free(ec);
return 0;
}
EC_GROUP_set_asn1_flag(group, OPENSSL_EC_NAMED_CURVE);
if (GOST_KEY_set_group(ec, group) == 0) {
GOSTerror(ERR_R_EC_LIB);
EC_GROUP_free(group);
GOST_KEY_free(ec);
return 0;
}
EC_GROUP_free(group);
if (GOST_KEY_set_digest(ec,
NID_id_GostR3411_94_CryptoProParamSet) == 0) {
GOSTerror(GOST_R_INVALID_DIGEST_TYPE);
GOST_KEY_free(ec);
return 0;
}
ret = EVP_PKEY_assign_GOST(pkey, ec);
if (ret == 0)
GOST_KEY_free(ec);
return ret;
}
static int
param_missing_gost01(const EVP_PKEY *pk)
{
const GOST_KEY *ec = pk->pkey.gost;
if (ec == NULL)
return 1;
if (GOST_KEY_get0_group(ec) == NULL)
return 1;
if (GOST_KEY_get_digest(ec) == NID_undef)
return 1;
return 0;
}
static int
param_copy_gost01(EVP_PKEY *to, const EVP_PKEY *from)
{
GOST_KEY *eto = to->pkey.gost;
const GOST_KEY *efrom = from->pkey.gost;
int ret = 1;
if (EVP_PKEY_base_id(from) != EVP_PKEY_base_id(to)) {
GOSTerror(GOST_R_INCOMPATIBLE_ALGORITHMS);
return 0;
}
if (efrom == NULL) {
GOSTerror(GOST_R_KEY_PARAMETERS_MISSING);
return 0;
}
if (eto == NULL) {
eto = GOST_KEY_new();
if (eto == NULL) {
GOSTerror(ERR_R_MALLOC_FAILURE);
return 0;
}
if (EVP_PKEY_assign(to, EVP_PKEY_base_id(from), eto) == 0) {
GOST_KEY_free(eto);
return 0;
}
}
GOST_KEY_set_group(eto, GOST_KEY_get0_group(efrom));
GOST_KEY_set_digest(eto, GOST_KEY_get_digest(efrom));
if (GOST_KEY_get0_private_key(eto) != NULL)
ret = gost2001_compute_public(eto);
return ret;
}
static int
param_cmp_gost01(const EVP_PKEY *a, const EVP_PKEY *b)
{
if (EC_GROUP_get_curve_name(GOST_KEY_get0_group(a->pkey.gost)) !=
EC_GROUP_get_curve_name(GOST_KEY_get0_group(b->pkey.gost)))
return 0;
if (GOST_KEY_get_digest(a->pkey.gost) !=
GOST_KEY_get_digest(b->pkey.gost))
return 0;
return 1;
}
static int
pkey_ctrl_gost01(EVP_PKEY *pkey, int op, long arg1, void *arg2)
{
X509_ALGOR *alg1 = NULL, *alg2 = NULL, *alg3 = NULL;
int digest = GOST_KEY_get_digest(pkey->pkey.gost);
switch (op) {
case ASN1_PKEY_CTRL_PKCS7_SIGN:
if (arg1 == 0)
PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, &alg1, &alg2);
break;
case ASN1_PKEY_CTRL_PKCS7_ENCRYPT:
if (arg1 == 0)
PKCS7_RECIP_INFO_get0_alg(arg2, &alg3);
break;
case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
*(int *)arg2 = GostR3410_get_md_digest(digest);
return 2;
default:
return -2;
}
if (alg1)
X509_ALGOR_set0(alg1, OBJ_nid2obj(GostR3410_get_md_digest(digest)), V_ASN1_NULL, 0);
if (alg2)
X509_ALGOR_set0(alg2, OBJ_nid2obj(GostR3410_get_pk_digest(digest)), V_ASN1_NULL, 0);
if (alg3) {
ASN1_STRING *params = encode_gost01_algor_params(pkey);
if (params == NULL) {
return -1;
}
X509_ALGOR_set0(alg3,
OBJ_nid2obj(GostR3410_get_pk_digest(digest)),
V_ASN1_SEQUENCE, params);
}
return 1;
}
const EVP_PKEY_ASN1_METHOD gostr01_asn1_meths[] = {
{
.pkey_id = EVP_PKEY_GOSTR01,
.pkey_base_id = EVP_PKEY_GOSTR01,
.pkey_flags = ASN1_PKEY_SIGPARAM_NULL,
.pem_str = "GOST2001",
.info = "GOST R 34.10-2001",
.pkey_free = pkey_free_gost01,
.pkey_ctrl = pkey_ctrl_gost01,
.priv_decode = priv_decode_gost01,
.priv_encode = priv_encode_gost01,
.priv_print = priv_print_gost01,
.param_decode = param_decode_gost01,
.param_encode = param_encode_gost01,
.param_missing = param_missing_gost01,
.param_copy = param_copy_gost01,
.param_cmp = param_cmp_gost01,
.param_print = param_print_gost01,
.pub_decode = pub_decode_gost01,
.pub_encode = pub_encode_gost01,
.pub_cmp = pub_cmp_gost01,
.pub_print = pub_print_gost01,
.pkey_size = pkey_size_gost01,
.pkey_bits = pkey_bits_gost01,
},
{
.pkey_id = EVP_PKEY_GOSTR12_256,
.pkey_base_id = EVP_PKEY_GOSTR01,
.pkey_flags = ASN1_PKEY_ALIAS
},
{
.pkey_id = EVP_PKEY_GOSTR12_512,
.pkey_base_id = EVP_PKEY_GOSTR01,
.pkey_flags = ASN1_PKEY_ALIAS
},
};
#endif