EC_KEY *EC_KEY_new_by_curve_name_NID_secp256k1(void)
{
static EC_GROUP *group = NULL;
EC_KEY *ret = NULL;
if (group == NULL) {
#ifdef HAVE_NID_secp256k1
group = EC_GROUP_new_by_curve_name(NID_secp256k1);
#else
group = ec_group_new_from_data(&EC_SECG_PRIME_256K1.h);
#endif
if (group == NULL) {
return NULL;
}
}
ret = EC_KEY_new();
if (ret == NULL) {
return NULL;
}
EC_KEY_set_group(ret, group);
return ret;
}
EC_GROUP *EC_GROUP_new_by_curve_name(int nid)
{
size_t i;
EC_GROUP *ret = NULL;
if (nid <= 0)
return NULL;
for (i=0; i<curve_list_length; i++)
if (curve_list[i].nid == nid)
{
ret = ec_group_new_from_data(curve_list[i]);
break;
}
if (ret == NULL)
{
ECerr(EC_F_EC_GROUP_NEW_BY_CURVE_NAME, EC_R_UNKNOWN_GROUP);
return NULL;
}
EC_GROUP_set_curve_name(ret, nid);
return ret;
}
EC_GROUP *EC_GROUP_new_by_curve_name(int nid) {
const struct built_in_curves *const curves = OPENSSL_built_in_curves();
EC_GROUP *ret = NULL;
for (size_t i = 0; i < OPENSSL_NUM_BUILT_IN_CURVES; i++) {
const struct built_in_curve *curve = &curves->curves[i];
if (curve->nid == nid) {
ret = ec_group_new_from_data(i);
break;
}
}
if (ret == NULL) {
OPENSSL_PUT_ERROR(EC, EC_R_UNKNOWN_GROUP);
return NULL;
}
ret->curve_name = nid;
return ret;
}
EC_GROUP *EC_GROUP_new_by_curve_name(int nid) {
unsigned i;
const struct built_in_curve *curve;
EC_GROUP *ret = NULL;
for (i = 0; OPENSSL_built_in_curves[i].nid != NID_undef; i++) {
curve = &OPENSSL_built_in_curves[i];
if (curve->nid == nid) {
ret = ec_group_new_from_data(curve);
break;
}
}
if (ret == NULL) {
OPENSSL_PUT_ERROR(EC, EC_R_UNKNOWN_GROUP);
return NULL;
}
ret->curve_name = nid;
return ret;
}
