d2i_ECParameters
if (!(eckey = d2i_ECParameters(NULL, &pm, pmlen))) {
if (!(eckey = d2i_ECParameters(NULL, pder, derlen))) {
k = d2i_ECParameters(NULL, (const unsigned char **)&p, len);
EC_KEY *d2i_ECParameters(EC_KEY **key, const unsigned char **in, long len);