/*
* Parses GOST algorithm parameters from X509_ALGOR and modifies pkey setting
* NID and parameters
*/
static int decode_gost_algor_params(EVP_PKEY *pkey, X509_ALGOR *palg)
{
ASN1_OBJECT *palg_obj = NULL;
int ptype = V_ASN1_UNDEF;
int pkey_nid = NID_undef, param_nid = NID_undef;
ASN1_STRING *pval = NULL;
const unsigned char *p;
GOST_KEY_PARAMS *gkp = NULL;
if (!pkey || !palg)
return 0;
X509_ALGOR_get0(&palg_obj, &ptype, (void **)&pval, palg);
if (ptype != V_ASN1_SEQUENCE) {
GOSTerr(GOST_F_DECODE_GOST_ALGOR_PARAMS,
GOST_R_BAD_KEY_PARAMETERS_FORMAT);
return 0;
}
p = pval->data;
pkey_nid = OBJ_obj2nid(palg_obj);
gkp = d2i_GOST_KEY_PARAMS(NULL, &p, pval->length);
if (!gkp) {
GOSTerr(GOST_F_DECODE_GOST_ALGOR_PARAMS,
GOST_R_BAD_PKEY_PARAMETERS_FORMAT);
return 0;
}
param_nid = OBJ_obj2nid(gkp->key_params);
GOST_KEY_PARAMS_free(gkp);
if (!EVP_PKEY_set_type(pkey, pkey_nid)) {
GOSTerr(GOST_F_DECODE_GOST_ALGOR_PARAMS, ERR_R_INTERNAL_ERROR);
return 0;
}
return gost_decode_nid_params(pkey, pkey_nid, param_nid);
}
/*
* Parses GOST algorithm parameters from X509_ALGOR and modifies pkey setting
* NID and parameters
*/
static int decode_gost_algor_params(EVP_PKEY *pkey, X509_ALGOR *palg)
{
ASN1_OBJECT *palg_obj = NULL;
int ptype = V_ASN1_UNDEF;
int pkey_nid = NID_undef, param_nid = NID_undef;
void *_pval;
ASN1_STRING *pval = NULL;
const unsigned char *p;
GOST_KEY_PARAMS *gkp = NULL;
X509_ALGOR_get0(&palg_obj, &ptype, &_pval, palg);
pval = _pval;
if (ptype != V_ASN1_SEQUENCE) {
GOSTerr(GOST_F_DECODE_GOST_ALGOR_PARAMS,
GOST_R_BAD_KEY_PARAMETERS_FORMAT);
return 0;
}
p = pval->data;
pkey_nid = OBJ_obj2nid(palg_obj);
gkp = d2i_GOST_KEY_PARAMS(NULL, &p, pval->length);
if (!gkp) {
GOSTerr(GOST_F_DECODE_GOST_ALGOR_PARAMS,
GOST_R_BAD_PKEY_PARAMETERS_FORMAT);
return 0;
}
param_nid = OBJ_obj2nid(gkp->key_params);
GOST_KEY_PARAMS_free(gkp);
if(!EVP_PKEY_set_type(pkey, pkey_nid)) {
GOSTerr(GOST_F_DECODE_GOST_ALGOR_PARAMS, ERR_R_INTERNAL_ERROR);
return 0;
}
switch (pkey_nid) {
case NID_id_GostR3410_94:
{
DSA *dsa = EVP_PKEY_get0(pkey);
if (!dsa) {
dsa = DSA_new();
if (!EVP_PKEY_assign(pkey, pkey_nid, dsa))
return 0;
}
if (!fill_GOST94_params(dsa, param_nid))
return 0;
break;
}
case NID_id_GostR3410_2001:
{
EC_KEY *ec = EVP_PKEY_get0(pkey);
if (!ec) {
ec = EC_KEY_new();
if (!EVP_PKEY_assign(pkey, pkey_nid, ec))
return 0;
}
if (!fill_GOST2001_params(ec, param_nid))
return 0;
}
}
return 1;
}
/*
* 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) {
GOSTerr(GOST_F_DECODE_GOST01_ALGOR_PARAMS,
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)
return 0;
if (EVP_PKEY_assign_GOST(pkey, ec) == 0)
return 0;
}
group = EC_GROUP_new_by_curve_name(param_nid);
if (group == NULL)
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;
}
