b548a1f11c
Don't check for NULL before calling OPENSSL_free Reviewed-by: Richard Levitte <levitte@openssl.org>
968 lines
29 KiB
C
968 lines
29 KiB
C
/**********************************************************************
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* gost_ameth.c *
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* Copyright (c) 2005-2006 Cryptocom LTD *
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* This file is distributed under the same license as OpenSSL *
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* *
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* Implementation of RFC 4490/4491 ASN1 method *
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* for OpenSSL *
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* Requires OpenSSL 0.9.9 for compilation *
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**********************************************************************/
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#include <string.h>
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#include <openssl/crypto.h>
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#include <openssl/err.h>
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#include <openssl/engine.h>
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#include <openssl/evp.h>
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#include <openssl/asn1.h>
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#ifndef OPENSSL_NO_CMS
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# include <openssl/cms.h>
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#endif
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#include "gost_params.h"
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#include "gost_lcl.h"
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#include "e_gost_err.h"
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int gost94_nid_by_params(DSA *p)
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{
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R3410_params *gost_params;
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BIGNUM *q = BN_new();
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for (gost_params = R3410_paramset; gost_params->q != NULL; gost_params++) {
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BN_dec2bn(&q, gost_params->q);
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if (!BN_cmp(q, p->q)) {
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BN_free(q);
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return gost_params->nid;
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}
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}
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BN_free(q);
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return NID_undef;
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}
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static ASN1_STRING *encode_gost_algor_params(const EVP_PKEY *key)
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{
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ASN1_STRING *params = ASN1_STRING_new();
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GOST_KEY_PARAMS *gkp = GOST_KEY_PARAMS_new();
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int pkey_param_nid = NID_undef;
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if (!params || !gkp) {
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GOSTerr(GOST_F_ENCODE_GOST_ALGOR_PARAMS, ERR_R_MALLOC_FAILURE);
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ASN1_STRING_free(params);
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params = NULL;
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goto err;
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}
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switch (EVP_PKEY_base_id(key)) {
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case NID_id_GostR3410_2001:
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pkey_param_nid =
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EC_GROUP_get_curve_name(EC_KEY_get0_group
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(EVP_PKEY_get0((EVP_PKEY *)key)));
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break;
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case NID_id_GostR3410_94:
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pkey_param_nid =
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(int)gost94_nid_by_params(EVP_PKEY_get0((EVP_PKEY *)key));
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if (pkey_param_nid == NID_undef) {
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GOSTerr(GOST_F_ENCODE_GOST_ALGOR_PARAMS,
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GOST_R_INVALID_GOST94_PARMSET);
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ASN1_STRING_free(params);
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params = NULL;
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goto err;
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}
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break;
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}
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gkp->key_params = OBJ_nid2obj(pkey_param_nid);
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gkp->hash_params = OBJ_nid2obj(NID_id_GostR3411_94_CryptoProParamSet);
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/*
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* gkp->cipher_params = OBJ_nid2obj(cipher_param_nid);
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*/
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params->length = i2d_GOST_KEY_PARAMS(gkp, ¶ms->data);
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if (params->length <= 0) {
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GOSTerr(GOST_F_ENCODE_GOST_ALGOR_PARAMS, ERR_R_MALLOC_FAILURE);
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ASN1_STRING_free(params);
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params = NULL;
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goto err;
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}
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params->type = V_ASN1_SEQUENCE;
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err:
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GOST_KEY_PARAMS_free(gkp);
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return params;
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}
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/*
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* Parses GOST algorithm parameters from X509_ALGOR and modifies pkey setting
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* NID and parameters
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*/
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static int decode_gost_algor_params(EVP_PKEY *pkey, X509_ALGOR *palg)
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{
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ASN1_OBJECT *palg_obj = NULL;
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int ptype = V_ASN1_UNDEF;
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int pkey_nid = NID_undef, param_nid = NID_undef;
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void *_pval;
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ASN1_STRING *pval = NULL;
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const unsigned char *p;
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GOST_KEY_PARAMS *gkp = NULL;
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X509_ALGOR_get0(&palg_obj, &ptype, &_pval, palg);
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pval = _pval;
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if (ptype != V_ASN1_SEQUENCE) {
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GOSTerr(GOST_F_DECODE_GOST_ALGOR_PARAMS,
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GOST_R_BAD_KEY_PARAMETERS_FORMAT);
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return 0;
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}
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p = pval->data;
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pkey_nid = OBJ_obj2nid(palg_obj);
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gkp = d2i_GOST_KEY_PARAMS(NULL, &p, pval->length);
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if (!gkp) {
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GOSTerr(GOST_F_DECODE_GOST_ALGOR_PARAMS,
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GOST_R_BAD_PKEY_PARAMETERS_FORMAT);
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return 0;
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}
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param_nid = OBJ_obj2nid(gkp->key_params);
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GOST_KEY_PARAMS_free(gkp);
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if (!EVP_PKEY_set_type(pkey, pkey_nid)) {
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GOSTerr(GOST_F_DECODE_GOST_ALGOR_PARAMS, ERR_R_INTERNAL_ERROR);
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return 0;
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}
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switch (pkey_nid) {
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case NID_id_GostR3410_94:
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{
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DSA *dsa = EVP_PKEY_get0(pkey);
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if (!dsa) {
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dsa = DSA_new();
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if (!EVP_PKEY_assign(pkey, pkey_nid, dsa))
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return 0;
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}
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if (!fill_GOST94_params(dsa, param_nid))
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return 0;
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break;
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}
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case NID_id_GostR3410_2001:
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{
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EC_KEY *ec = EVP_PKEY_get0(pkey);
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if (!ec) {
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ec = EC_KEY_new();
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if (!EVP_PKEY_assign(pkey, pkey_nid, ec))
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return 0;
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}
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if (!fill_GOST2001_params(ec, param_nid))
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return 0;
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}
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}
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return 1;
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}
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static int gost_set_priv_key(EVP_PKEY *pkey, BIGNUM *priv)
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{
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switch (EVP_PKEY_base_id(pkey)) {
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case NID_id_GostR3410_94:
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{
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DSA *dsa = EVP_PKEY_get0(pkey);
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if (!dsa) {
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dsa = DSA_new();
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EVP_PKEY_assign(pkey, EVP_PKEY_base_id(pkey), dsa);
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}
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dsa->priv_key = BN_dup(priv);
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if (!EVP_PKEY_missing_parameters(pkey))
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gost94_compute_public(dsa);
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break;
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}
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case NID_id_GostR3410_2001:
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{
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EC_KEY *ec = EVP_PKEY_get0(pkey);
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if (!ec) {
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ec = EC_KEY_new();
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EVP_PKEY_assign(pkey, EVP_PKEY_base_id(pkey), ec);
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}
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if (!EC_KEY_set_private_key(ec, priv))
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return 0;
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if (!EVP_PKEY_missing_parameters(pkey))
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gost2001_compute_public(ec);
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break;
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}
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}
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return 1;
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}
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BIGNUM *gost_get0_priv_key(const EVP_PKEY *pkey)
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{
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switch (EVP_PKEY_base_id(pkey)) {
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case NID_id_GostR3410_94:
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{
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DSA *dsa = EVP_PKEY_get0((EVP_PKEY *)pkey);
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if (!dsa) {
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return NULL;
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}
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if (!dsa->priv_key)
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return NULL;
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return dsa->priv_key;
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}
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case NID_id_GostR3410_2001:
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{
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EC_KEY *ec = EVP_PKEY_get0((EVP_PKEY *)pkey);
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const BIGNUM *priv;
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if (!ec) {
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return NULL;
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}
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if (!(priv = EC_KEY_get0_private_key(ec)))
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return NULL;
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return (BIGNUM *)priv;
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}
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}
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return NULL;
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}
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static int pkey_ctrl_gost(EVP_PKEY *pkey, int op, long arg1, void *arg2)
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{
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switch (op) {
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case ASN1_PKEY_CTRL_PKCS7_SIGN:
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if (arg1 == 0) {
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X509_ALGOR *alg1 = NULL, *alg2 = NULL;
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int nid = EVP_PKEY_base_id(pkey);
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PKCS7_SIGNER_INFO_get0_algs((PKCS7_SIGNER_INFO *)arg2,
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NULL, &alg1, &alg2);
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X509_ALGOR_set0(alg1, OBJ_nid2obj(NID_id_GostR3411_94),
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V_ASN1_NULL, 0);
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if (nid == NID_undef) {
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return (-1);
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}
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X509_ALGOR_set0(alg2, OBJ_nid2obj(nid), V_ASN1_NULL, 0);
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}
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return 1;
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#ifndef OPENSSL_NO_CMS
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case ASN1_PKEY_CTRL_CMS_SIGN:
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if (arg1 == 0) {
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X509_ALGOR *alg1 = NULL, *alg2 = NULL;
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int nid = EVP_PKEY_base_id(pkey);
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CMS_SignerInfo_get0_algs((CMS_SignerInfo *)arg2,
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NULL, NULL, &alg1, &alg2);
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X509_ALGOR_set0(alg1, OBJ_nid2obj(NID_id_GostR3411_94),
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V_ASN1_NULL, 0);
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if (nid == NID_undef) {
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return (-1);
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}
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X509_ALGOR_set0(alg2, OBJ_nid2obj(nid), V_ASN1_NULL, 0);
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}
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return 1;
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#endif
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case ASN1_PKEY_CTRL_PKCS7_ENCRYPT:
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if (arg1 == 0) {
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X509_ALGOR *alg;
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ASN1_STRING *params = encode_gost_algor_params(pkey);
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if (!params) {
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return -1;
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}
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PKCS7_RECIP_INFO_get0_alg((PKCS7_RECIP_INFO *)arg2, &alg);
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X509_ALGOR_set0(alg, OBJ_nid2obj(pkey->type),
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V_ASN1_SEQUENCE, params);
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}
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return 1;
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#ifndef OPENSSL_NO_CMS
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case ASN1_PKEY_CTRL_CMS_ENVELOPE:
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if (arg1 == 0) {
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X509_ALGOR *alg = NULL;
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ASN1_STRING *params = encode_gost_algor_params(pkey);
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if (!params) {
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return -1;
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}
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CMS_RecipientInfo_ktri_get0_algs((CMS_RecipientInfo *)arg2, NULL,
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NULL, &alg);
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X509_ALGOR_set0(alg, OBJ_nid2obj(pkey->type), V_ASN1_SEQUENCE,
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params);
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}
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return 1;
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#endif
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case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
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*(int *)arg2 = NID_id_GostR3411_94;
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return 2;
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}
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return -2;
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}
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/* --------------------- free functions * ------------------------------*/
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static void pkey_free_gost94(EVP_PKEY *key)
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{
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DSA_free(key->pkey.dsa);
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}
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static void pkey_free_gost01(EVP_PKEY *key)
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{
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EC_KEY_free(key->pkey.ec);
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}
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/* ------------------ private key functions -----------------------------*/
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static int priv_decode_gost(EVP_PKEY *pk, PKCS8_PRIV_KEY_INFO *p8inf)
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{
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const unsigned char *pkey_buf = NULL, *p = NULL;
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int priv_len = 0;
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BIGNUM *pk_num = NULL;
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int ret = 0;
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X509_ALGOR *palg = NULL;
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ASN1_OBJECT *palg_obj = NULL;
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ASN1_INTEGER *priv_key = NULL;
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if (!PKCS8_pkey_get0(&palg_obj, &pkey_buf, &priv_len, &palg, p8inf))
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return 0;
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p = pkey_buf;
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if (!decode_gost_algor_params(pk, palg)) {
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return 0;
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}
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if (V_ASN1_OCTET_STRING == *p) {
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/* New format - Little endian octet string */
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unsigned char rev_buf[32];
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int i;
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ASN1_OCTET_STRING *s = d2i_ASN1_OCTET_STRING(NULL, &p, priv_len);
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if (!s || s->length != 32) {
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GOSTerr(GOST_F_PRIV_DECODE_GOST, EVP_R_DECODE_ERROR);
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return 0;
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}
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for (i = 0; i < 32; i++) {
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rev_buf[31 - i] = s->data[i];
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}
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ASN1_STRING_free(s);
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pk_num = getbnfrombuf(rev_buf, 32);
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} else {
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priv_key = d2i_ASN1_INTEGER(NULL, &p, priv_len);
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if (!priv_key)
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return 0;
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ret = ((pk_num = ASN1_INTEGER_to_BN(priv_key, NULL)) != NULL);
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ASN1_INTEGER_free(priv_key);
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if (!ret) {
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GOSTerr(GOST_F_PRIV_DECODE_GOST, EVP_R_DECODE_ERROR);
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return 0;
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}
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}
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ret = gost_set_priv_key(pk, pk_num);
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BN_free(pk_num);
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return ret;
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}
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/* ----------------------------------------------------------------------*/
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static int priv_encode_gost(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pk)
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{
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ASN1_OBJECT *algobj = OBJ_nid2obj(EVP_PKEY_base_id(pk));
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ASN1_STRING *params = encode_gost_algor_params(pk);
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unsigned char *priv_buf = NULL;
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int priv_len;
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ASN1_INTEGER *asn1key = NULL;
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if (!params) {
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return 0;
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}
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asn1key = BN_to_ASN1_INTEGER(gost_get0_priv_key(pk), NULL);
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priv_len = i2d_ASN1_INTEGER(asn1key, &priv_buf);
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ASN1_INTEGER_free(asn1key);
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return PKCS8_pkey_set0(p8, algobj, 0, V_ASN1_SEQUENCE, params,
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priv_buf, priv_len);
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}
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/* --------- printing keys --------------------------------*/
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static int print_gost_94(BIO *out, const EVP_PKEY *pkey, int indent,
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ASN1_PCTX *pctx, int type)
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{
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int param_nid = NID_undef;
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if (type == 2) {
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BIGNUM *key;
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if (!BIO_indent(out, indent, 128))
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return 0;
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BIO_printf(out, "Private key: ");
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key = gost_get0_priv_key(pkey);
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if (!key)
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BIO_printf(out, "<undefined>");
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else
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BN_print(out, key);
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BIO_printf(out, "\n");
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}
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if (type >= 1) {
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BIGNUM *pubkey;
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pubkey = ((DSA *)EVP_PKEY_get0((EVP_PKEY *)pkey))->pub_key;
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BIO_indent(out, indent, 128);
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BIO_printf(out, "Public key: ");
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BN_print(out, pubkey);
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BIO_printf(out, "\n");
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}
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param_nid = gost94_nid_by_params(EVP_PKEY_get0((EVP_PKEY *)pkey));
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BIO_indent(out, indent, 128);
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BIO_printf(out, "Parameter set: %s\n", OBJ_nid2ln(param_nid));
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return 1;
|
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}
|
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|
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static int param_print_gost94(BIO *out, const EVP_PKEY *pkey, int indent,
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ASN1_PCTX *pctx)
|
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{
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return print_gost_94(out, pkey, indent, pctx, 0);
|
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}
|
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|
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static int pub_print_gost94(BIO *out, const EVP_PKEY *pkey, int indent,
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ASN1_PCTX *pctx)
|
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{
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return print_gost_94(out, pkey, indent, pctx, 1);
|
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}
|
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|
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static int priv_print_gost94(BIO *out, const EVP_PKEY *pkey, int indent,
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ASN1_PCTX *pctx)
|
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{
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return print_gost_94(out, pkey, indent, pctx, 2);
|
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}
|
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|
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static int print_gost_01(BIO *out, const EVP_PKEY *pkey, int indent,
|
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ASN1_PCTX *pctx, int type)
|
|
{
|
|
int param_nid = NID_undef;
|
|
if (type == 2) {
|
|
BIGNUM *key;
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|
|
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if (!BIO_indent(out, indent, 128))
|
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return 0;
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BIO_printf(out, "Private key: ");
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key = gost_get0_priv_key(pkey);
|
|
if (!key)
|
|
BIO_printf(out, "<undefined)");
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else
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|
BN_print(out, key);
|
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BIO_printf(out, "\n");
|
|
}
|
|
if (type >= 1) {
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|
BN_CTX *ctx = BN_CTX_new();
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|
BIGNUM *X, *Y;
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const EC_POINT *pubkey;
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const EC_GROUP *group;
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|
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if (!ctx) {
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|
GOSTerr(GOST_F_PRINT_GOST_01, ERR_R_MALLOC_FAILURE);
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return 0;
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|
}
|
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BN_CTX_start(ctx);
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X = BN_CTX_get(ctx);
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Y = BN_CTX_get(ctx);
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pubkey =
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EC_KEY_get0_public_key((EC_KEY *)EVP_PKEY_get0((EVP_PKEY *)pkey));
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group = EC_KEY_get0_group((EC_KEY *)EVP_PKEY_get0((EVP_PKEY *)pkey));
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if (!EC_POINT_get_affine_coordinates_GFp(group, pubkey, X, Y, ctx)) {
|
|
GOSTerr(GOST_F_PRINT_GOST_01, ERR_R_EC_LIB);
|
|
BN_CTX_free(ctx);
|
|
return 0;
|
|
}
|
|
if (!BIO_indent(out, indent, 128))
|
|
return 0;
|
|
BIO_printf(out, "Public key:\n");
|
|
if (!BIO_indent(out, indent + 3, 128))
|
|
return 0;
|
|
BIO_printf(out, "X:");
|
|
BN_print(out, X);
|
|
BIO_printf(out, "\n");
|
|
BIO_indent(out, indent + 3, 128);
|
|
BIO_printf(out, "Y:");
|
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BN_print(out, Y);
|
|
BIO_printf(out, "\n");
|
|
BN_CTX_end(ctx);
|
|
BN_CTX_free(ctx);
|
|
}
|
|
|
|
param_nid =
|
|
EC_GROUP_get_curve_name(EC_KEY_get0_group
|
|
(EVP_PKEY_get0((EVP_PKEY *)pkey)));
|
|
if (!BIO_indent(out, indent, 128))
|
|
return 0;
|
|
BIO_printf(out, "Parameter set: %s\n", OBJ_nid2ln(param_nid));
|
|
return 1;
|
|
}
|
|
|
|
static int param_print_gost01(BIO *out, const EVP_PKEY *pkey, int indent,
|
|
ASN1_PCTX *pctx)
|
|
{
|
|
return print_gost_01(out, pkey, indent, pctx, 0);
|
|
}
|
|
|
|
static int pub_print_gost01(BIO *out, const EVP_PKEY *pkey, int indent,
|
|
ASN1_PCTX *pctx)
|
|
{
|
|
return print_gost_01(out, pkey, indent, pctx, 1);
|
|
}
|
|
|
|
static int priv_print_gost01(BIO *out, const EVP_PKEY *pkey, int indent,
|
|
ASN1_PCTX *pctx)
|
|
{
|
|
return print_gost_01(out, pkey, indent, pctx, 2);
|
|
}
|
|
|
|
/* ---------------------------------------------------------------------*/
|
|
static int param_missing_gost94(const EVP_PKEY *pk)
|
|
{
|
|
const DSA *dsa = EVP_PKEY_get0((EVP_PKEY *)pk);
|
|
if (!dsa)
|
|
return 1;
|
|
if (!dsa->q)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
static int param_missing_gost01(const EVP_PKEY *pk)
|
|
{
|
|
const EC_KEY *ec = EVP_PKEY_get0((EVP_PKEY *)pk);
|
|
if (!ec)
|
|
return 1;
|
|
if (!EC_KEY_get0_group(ec))
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
static int param_copy_gost94(EVP_PKEY *to, const EVP_PKEY *from)
|
|
{
|
|
const DSA *dfrom = EVP_PKEY_get0((EVP_PKEY *)from);
|
|
DSA *dto = EVP_PKEY_get0(to);
|
|
if (EVP_PKEY_base_id(from) != EVP_PKEY_base_id(to)) {
|
|
GOSTerr(GOST_F_PARAM_COPY_GOST94, GOST_R_INCOMPATIBLE_ALGORITHMS);
|
|
return 0;
|
|
}
|
|
if (!dfrom) {
|
|
GOSTerr(GOST_F_PARAM_COPY_GOST94, GOST_R_KEY_PARAMETERS_MISSING);
|
|
return 0;
|
|
}
|
|
if (!dto) {
|
|
dto = DSA_new();
|
|
EVP_PKEY_assign(to, EVP_PKEY_base_id(from), dto);
|
|
}
|
|
BN_free(dto->p);
|
|
dto->p = BN_dup(dfrom->p);
|
|
BN_free(dto->q);
|
|
dto->q = BN_dup(dfrom->q);
|
|
BN_free(dto->g);
|
|
dto->g = BN_dup(dfrom->g);
|
|
|
|
if (dto->priv_key)
|
|
gost94_compute_public(dto);
|
|
return 1;
|
|
}
|
|
|
|
static int param_copy_gost01(EVP_PKEY *to, const EVP_PKEY *from)
|
|
{
|
|
EC_KEY *eto = EVP_PKEY_get0(to);
|
|
const EC_KEY *efrom = EVP_PKEY_get0((EVP_PKEY *)from);
|
|
if (EVP_PKEY_base_id(from) != EVP_PKEY_base_id(to)) {
|
|
GOSTerr(GOST_F_PARAM_COPY_GOST01, GOST_R_INCOMPATIBLE_ALGORITHMS);
|
|
return 0;
|
|
}
|
|
if (!efrom) {
|
|
GOSTerr(GOST_F_PARAM_COPY_GOST01, GOST_R_KEY_PARAMETERS_MISSING);
|
|
return 0;
|
|
}
|
|
if (!eto) {
|
|
eto = EC_KEY_new();
|
|
if (!eto) {
|
|
GOSTerr(GOST_F_PARAM_COPY_GOST01, ERR_R_MALLOC_FAILURE);
|
|
return 0;
|
|
}
|
|
if (!EVP_PKEY_assign(to, EVP_PKEY_base_id(from), eto)) {
|
|
GOSTerr(GOST_F_PARAM_COPY_GOST01, ERR_R_INTERNAL_ERROR);
|
|
return 0;
|
|
}
|
|
}
|
|
if (!EC_KEY_set_group(eto, EC_KEY_get0_group(efrom))) {
|
|
GOSTerr(GOST_F_PARAM_COPY_GOST01, ERR_R_INTERNAL_ERROR);
|
|
return 0;
|
|
}
|
|
if (EC_KEY_get0_private_key(eto)) {
|
|
gost2001_compute_public(eto);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int param_cmp_gost94(const EVP_PKEY *a, const EVP_PKEY *b)
|
|
{
|
|
const DSA *da = EVP_PKEY_get0((EVP_PKEY *)a);
|
|
const DSA *db = EVP_PKEY_get0((EVP_PKEY *)b);
|
|
if (!BN_cmp(da->q, db->q))
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
static int param_cmp_gost01(const EVP_PKEY *a, const EVP_PKEY *b)
|
|
{
|
|
if (EC_GROUP_get_curve_name
|
|
(EC_KEY_get0_group(EVP_PKEY_get0((EVP_PKEY *)a))) ==
|
|
EC_GROUP_get_curve_name(EC_KEY_get0_group
|
|
(EVP_PKEY_get0((EVP_PKEY *)b)))) {
|
|
return 1;
|
|
}
|
|
return 0;
|
|
|
|
}
|
|
|
|
/* ---------- Public key functions * --------------------------------------*/
|
|
static int pub_decode_gost94(EVP_PKEY *pk, X509_PUBKEY *pub)
|
|
{
|
|
X509_ALGOR *palg = NULL;
|
|
const unsigned char *pubkey_buf = NULL;
|
|
unsigned char *databuf;
|
|
ASN1_OBJECT *palgobj = NULL;
|
|
int pub_len, i, j;
|
|
DSA *dsa;
|
|
ASN1_OCTET_STRING *octet = NULL;
|
|
|
|
if (!X509_PUBKEY_get0_param(&palgobj, &pubkey_buf, &pub_len, &palg, pub))
|
|
return 0;
|
|
EVP_PKEY_assign(pk, OBJ_obj2nid(palgobj), NULL);
|
|
if (!decode_gost_algor_params(pk, palg))
|
|
return 0;
|
|
octet = d2i_ASN1_OCTET_STRING(NULL, &pubkey_buf, pub_len);
|
|
if (!octet) {
|
|
GOSTerr(GOST_F_PUB_DECODE_GOST94, ERR_R_MALLOC_FAILURE);
|
|
return 0;
|
|
}
|
|
databuf = OPENSSL_malloc(octet->length);
|
|
if (databuf == NULL) {
|
|
GOSTerr(GOST_F_PUB_DECODE_GOST94, ERR_R_MALLOC_FAILURE);
|
|
ASN1_OCTET_STRING_free(octet);
|
|
return 0;
|
|
}
|
|
for (i = 0, j = octet->length - 1; i < octet->length; i++, j--) {
|
|
databuf[j] = octet->data[i];
|
|
}
|
|
dsa = EVP_PKEY_get0(pk);
|
|
dsa->pub_key = BN_bin2bn(databuf, octet->length, NULL);
|
|
ASN1_OCTET_STRING_free(octet);
|
|
OPENSSL_free(databuf);
|
|
return 1;
|
|
|
|
}
|
|
|
|
static int pub_encode_gost94(X509_PUBKEY *pub, const EVP_PKEY *pk)
|
|
{
|
|
ASN1_OBJECT *algobj = NULL;
|
|
ASN1_OCTET_STRING *octet = NULL;
|
|
void *pval = NULL;
|
|
unsigned char *buf = NULL, *databuf, *sptr;
|
|
int i, j, data_len, ret = 0;
|
|
|
|
int ptype = V_ASN1_UNDEF;
|
|
DSA *dsa = EVP_PKEY_get0((EVP_PKEY *)pk);
|
|
algobj = OBJ_nid2obj(EVP_PKEY_base_id(pk));
|
|
if (pk->save_parameters) {
|
|
ASN1_STRING *params = encode_gost_algor_params(pk);
|
|
pval = params;
|
|
ptype = V_ASN1_SEQUENCE;
|
|
}
|
|
data_len = BN_num_bytes(dsa->pub_key);
|
|
databuf = OPENSSL_malloc(data_len);
|
|
if (databuf == NULL) {
|
|
GOSTerr(GOST_F_PUB_ENCODE_GOST94, ERR_R_MALLOC_FAILURE);
|
|
return 0;
|
|
}
|
|
BN_bn2bin(dsa->pub_key, databuf);
|
|
octet = ASN1_OCTET_STRING_new();
|
|
if (octet == NULL) {
|
|
GOSTerr(GOST_F_PUB_ENCODE_GOST94, ERR_R_MALLOC_FAILURE);
|
|
OPENSSL_free(databuf);
|
|
return 0;
|
|
}
|
|
ASN1_STRING_set(octet, NULL, data_len);
|
|
sptr = ASN1_STRING_data(octet);
|
|
for (i = 0, j = data_len - 1; i < data_len; i++, j--) {
|
|
sptr[i] = databuf[j];
|
|
}
|
|
OPENSSL_free(databuf);
|
|
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);
|
|
}
|
|
|
|
static int pub_decode_gost01(EVP_PKEY *pk, X509_PUBKEY *pub)
|
|
{
|
|
X509_ALGOR *palg = NULL;
|
|
const unsigned char *pubkey_buf = NULL;
|
|
unsigned char *databuf;
|
|
ASN1_OBJECT *palgobj = NULL;
|
|
int pub_len, i, j;
|
|
EC_POINT *pub_key;
|
|
BIGNUM *X, *Y;
|
|
ASN1_OCTET_STRING *octet = NULL;
|
|
int len;
|
|
const EC_GROUP *group;
|
|
|
|
if (!X509_PUBKEY_get0_param(&palgobj, &pubkey_buf, &pub_len, &palg, pub))
|
|
return 0;
|
|
EVP_PKEY_assign(pk, OBJ_obj2nid(palgobj), NULL);
|
|
if (!decode_gost_algor_params(pk, palg))
|
|
return 0;
|
|
group = EC_KEY_get0_group(EVP_PKEY_get0(pk));
|
|
octet = d2i_ASN1_OCTET_STRING(NULL, &pubkey_buf, pub_len);
|
|
if (!octet) {
|
|
GOSTerr(GOST_F_PUB_DECODE_GOST01, ERR_R_MALLOC_FAILURE);
|
|
return 0;
|
|
}
|
|
databuf = OPENSSL_malloc(octet->length);
|
|
if (databuf == NULL) {
|
|
GOSTerr(GOST_F_PUB_DECODE_GOST01, ERR_R_MALLOC_FAILURE);
|
|
ASN1_OCTET_STRING_free(octet);
|
|
return 0;
|
|
}
|
|
for (i = 0, j = octet->length - 1; i < octet->length; i++, j--) {
|
|
databuf[j] = octet->data[i];
|
|
}
|
|
len = octet->length / 2;
|
|
ASN1_OCTET_STRING_free(octet);
|
|
|
|
Y = getbnfrombuf(databuf, len);
|
|
X = getbnfrombuf(databuf + len, len);
|
|
OPENSSL_free(databuf);
|
|
pub_key = EC_POINT_new(group);
|
|
if (!EC_POINT_set_affine_coordinates_GFp(group, pub_key, X, Y, NULL)) {
|
|
GOSTerr(GOST_F_PUB_DECODE_GOST01, ERR_R_EC_LIB);
|
|
EC_POINT_free(pub_key);
|
|
BN_free(X);
|
|
BN_free(Y);
|
|
return 0;
|
|
}
|
|
BN_free(X);
|
|
BN_free(Y);
|
|
if (!EC_KEY_set_public_key(EVP_PKEY_get0(pk), pub_key)) {
|
|
GOSTerr(GOST_F_PUB_DECODE_GOST01, ERR_R_EC_LIB);
|
|
EC_POINT_free(pub_key);
|
|
return 0;
|
|
}
|
|
EC_POINT_free(pub_key);
|
|
return 1;
|
|
|
|
}
|
|
|
|
static int pub_encode_gost01(X509_PUBKEY *pub, const EVP_PKEY *pk)
|
|
{
|
|
ASN1_OBJECT *algobj = NULL;
|
|
ASN1_OCTET_STRING *octet = NULL;
|
|
void *pval = NULL;
|
|
unsigned char *buf = NULL, *databuf, *sptr;
|
|
int i, j, data_len, ret = 0;
|
|
const EC_POINT *pub_key;
|
|
BIGNUM *X, *Y, *order;
|
|
const EC_KEY *ec = EVP_PKEY_get0((EVP_PKEY *)pk);
|
|
int ptype = V_ASN1_UNDEF;
|
|
|
|
algobj = OBJ_nid2obj(EVP_PKEY_base_id(pk));
|
|
if (pk->save_parameters) {
|
|
ASN1_STRING *params = encode_gost_algor_params(pk);
|
|
pval = params;
|
|
ptype = V_ASN1_SEQUENCE;
|
|
}
|
|
order = BN_new();
|
|
EC_GROUP_get_order(EC_KEY_get0_group(ec), order, NULL);
|
|
pub_key = EC_KEY_get0_public_key(ec);
|
|
if (!pub_key) {
|
|
GOSTerr(GOST_F_PUB_ENCODE_GOST01, GOST_R_PUBLIC_KEY_UNDEFINED);
|
|
BN_free(order);
|
|
return 0;
|
|
}
|
|
X = BN_new();
|
|
Y = BN_new();
|
|
if (!X || !Y) {
|
|
GOSTerr(GOST_F_PUB_ENCODE_GOST01, ERR_R_MALLOC_FAILURE);
|
|
BN_free(X);
|
|
BN_free(Y);
|
|
BN_free(order);
|
|
return 0;
|
|
}
|
|
if (!EC_POINT_get_affine_coordinates_GFp(EC_KEY_get0_group(ec),
|
|
pub_key, X, Y, NULL)) {
|
|
GOSTerr(GOST_F_PUB_ENCODE_GOST01, ERR_R_INTERNAL_ERROR);
|
|
BN_free(X);
|
|
BN_free(Y);
|
|
BN_free(order);
|
|
return 0;
|
|
}
|
|
data_len = 2 * BN_num_bytes(order);
|
|
BN_free(order);
|
|
databuf = OPENSSL_malloc(data_len);
|
|
if (databuf == NULL) {
|
|
GOSTerr(GOST_F_PUB_ENCODE_GOST01, ERR_R_MALLOC_FAILURE);
|
|
BN_free(X);
|
|
BN_free(Y);
|
|
return 0;
|
|
}
|
|
memset(databuf, 0, data_len);
|
|
|
|
store_bignum(X, databuf + data_len / 2, data_len / 2);
|
|
store_bignum(Y, databuf, data_len / 2);
|
|
|
|
BN_free(X);
|
|
BN_free(Y);
|
|
octet = ASN1_OCTET_STRING_new();
|
|
if (octet == NULL) {
|
|
GOSTerr(GOST_F_PUB_ENCODE_GOST01, ERR_R_MALLOC_FAILURE);
|
|
OPENSSL_free(databuf);
|
|
return 0;
|
|
}
|
|
ASN1_STRING_set(octet, NULL, data_len);
|
|
sptr = ASN1_STRING_data(octet);
|
|
for (i = 0, j = data_len - 1; i < data_len; i++, j--) {
|
|
sptr[i] = databuf[j];
|
|
}
|
|
OPENSSL_free(databuf);
|
|
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);
|
|
}
|
|
|
|
static int pub_cmp_gost94(const EVP_PKEY *a, const EVP_PKEY *b)
|
|
{
|
|
const DSA *da = EVP_PKEY_get0((EVP_PKEY *)a);
|
|
const DSA *db = EVP_PKEY_get0((EVP_PKEY *)b);
|
|
if (da && db && da->pub_key && db->pub_key
|
|
&& !BN_cmp(da->pub_key, db->pub_key)) {
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int pub_cmp_gost01(const EVP_PKEY *a, const EVP_PKEY *b)
|
|
{
|
|
const EC_KEY *ea = EVP_PKEY_get0((EVP_PKEY *)a);
|
|
const EC_KEY *eb = EVP_PKEY_get0((EVP_PKEY *)b);
|
|
const EC_POINT *ka, *kb;
|
|
int ret = 0;
|
|
if (!ea || !eb)
|
|
return 0;
|
|
ka = EC_KEY_get0_public_key(ea);
|
|
kb = EC_KEY_get0_public_key(eb);
|
|
if (!ka || !kb)
|
|
return 0;
|
|
ret = (0 == EC_POINT_cmp(EC_KEY_get0_group(ea), ka, kb, NULL));
|
|
return ret;
|
|
}
|
|
|
|
static int pkey_size_gost(const EVP_PKEY *pk)
|
|
{
|
|
return 64;
|
|
}
|
|
|
|
static int pkey_bits_gost(const EVP_PKEY *pk)
|
|
{
|
|
return 256;
|
|
}
|
|
|
|
/* ---------------------- ASN1 METHOD for GOST MAC -------------------*/
|
|
static void mackey_free_gost(EVP_PKEY *pk)
|
|
{
|
|
OPENSSL_free(pk->pkey.ptr);
|
|
}
|
|
|
|
static int mac_ctrl_gost(EVP_PKEY *pkey, int op, long arg1, void *arg2)
|
|
{
|
|
switch (op) {
|
|
case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
|
|
*(int *)arg2 = NID_id_Gost28147_89_MAC;
|
|
return 2;
|
|
}
|
|
return -2;
|
|
}
|
|
|
|
static int gost94_param_encode(const EVP_PKEY *pkey, unsigned char **pder)
|
|
{
|
|
int nid = gost94_nid_by_params(EVP_PKEY_get0((EVP_PKEY *)pkey));
|
|
return i2d_ASN1_OBJECT(OBJ_nid2obj(nid), pder);
|
|
}
|
|
|
|
static int gost2001_param_encode(const EVP_PKEY *pkey, unsigned char **pder)
|
|
{
|
|
int nid =
|
|
EC_GROUP_get_curve_name(EC_KEY_get0_group
|
|
(EVP_PKEY_get0((EVP_PKEY *)pkey)));
|
|
return i2d_ASN1_OBJECT(OBJ_nid2obj(nid), pder);
|
|
}
|
|
|
|
static int gost94_param_decode(EVP_PKEY *pkey, const unsigned char **pder,
|
|
int derlen)
|
|
{
|
|
ASN1_OBJECT *obj = NULL;
|
|
DSA *dsa = EVP_PKEY_get0(pkey);
|
|
int nid;
|
|
if (d2i_ASN1_OBJECT(&obj, pder, derlen) == NULL) {
|
|
return 0;
|
|
}
|
|
nid = OBJ_obj2nid(obj);
|
|
ASN1_OBJECT_free(obj);
|
|
if (!dsa) {
|
|
dsa = DSA_new();
|
|
if (!EVP_PKEY_assign(pkey, NID_id_GostR3410_94, dsa))
|
|
return 0;
|
|
}
|
|
if (!fill_GOST94_params(dsa, nid))
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
static int gost2001_param_decode(EVP_PKEY *pkey, const unsigned char **pder,
|
|
int derlen)
|
|
{
|
|
ASN1_OBJECT *obj = NULL;
|
|
int nid;
|
|
EC_KEY *ec = EVP_PKEY_get0(pkey);
|
|
if (d2i_ASN1_OBJECT(&obj, pder, derlen) == NULL) {
|
|
return 0;
|
|
}
|
|
nid = OBJ_obj2nid(obj);
|
|
ASN1_OBJECT_free(obj);
|
|
if (!ec) {
|
|
ec = EC_KEY_new();
|
|
if (!EVP_PKEY_assign(pkey, NID_id_GostR3410_2001, ec))
|
|
return 0;
|
|
}
|
|
if (!fill_GOST2001_params(ec, nid))
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------*/
|
|
int register_ameth_gost(int nid, EVP_PKEY_ASN1_METHOD **ameth,
|
|
const char *pemstr, const char *info)
|
|
{
|
|
*ameth = EVP_PKEY_asn1_new(nid, ASN1_PKEY_SIGPARAM_NULL, pemstr, info);
|
|
if (!*ameth)
|
|
return 0;
|
|
switch (nid) {
|
|
case NID_id_GostR3410_94:
|
|
EVP_PKEY_asn1_set_free(*ameth, pkey_free_gost94);
|
|
EVP_PKEY_asn1_set_private(*ameth,
|
|
priv_decode_gost, priv_encode_gost,
|
|
priv_print_gost94);
|
|
|
|
EVP_PKEY_asn1_set_param(*ameth,
|
|
gost94_param_decode, gost94_param_encode,
|
|
param_missing_gost94, param_copy_gost94,
|
|
param_cmp_gost94, param_print_gost94);
|
|
EVP_PKEY_asn1_set_public(*ameth,
|
|
pub_decode_gost94, pub_encode_gost94,
|
|
pub_cmp_gost94, pub_print_gost94,
|
|
pkey_size_gost, pkey_bits_gost);
|
|
|
|
EVP_PKEY_asn1_set_ctrl(*ameth, pkey_ctrl_gost);
|
|
break;
|
|
case NID_id_GostR3410_2001:
|
|
EVP_PKEY_asn1_set_free(*ameth, pkey_free_gost01);
|
|
EVP_PKEY_asn1_set_private(*ameth,
|
|
priv_decode_gost, priv_encode_gost,
|
|
priv_print_gost01);
|
|
|
|
EVP_PKEY_asn1_set_param(*ameth,
|
|
gost2001_param_decode, gost2001_param_encode,
|
|
param_missing_gost01, param_copy_gost01,
|
|
param_cmp_gost01, param_print_gost01);
|
|
EVP_PKEY_asn1_set_public(*ameth,
|
|
pub_decode_gost01, pub_encode_gost01,
|
|
pub_cmp_gost01, pub_print_gost01,
|
|
pkey_size_gost, pkey_bits_gost);
|
|
|
|
EVP_PKEY_asn1_set_ctrl(*ameth, pkey_ctrl_gost);
|
|
break;
|
|
case NID_id_Gost28147_89_MAC:
|
|
EVP_PKEY_asn1_set_free(*ameth, mackey_free_gost);
|
|
EVP_PKEY_asn1_set_ctrl(*ameth, mac_ctrl_gost);
|
|
break;
|
|
}
|
|
return 1;
|
|
}
|