EVP_PKEY_get1_EC_KEY
key = (ASN1_VALUE *)EVP_PKEY_get1_EC_KEY(pkey);
dtmp = EVP_PKEY_get1_EC_KEY(key);
struct ec_key_st *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey);
if ((eckey = EVP_PKEY_get1_EC_KEY(pkey)) == NULL ||
(skey->ecdsa = EVP_PKEY_get1_EC_KEY(pkey)) == NULL) {
(*k)->ecdsa = EVP_PKEY_get1_EC_KEY(pubkey);
prv->ecdsa = EVP_PKEY_get1_EC_KEY(pk);