KEY_PUB_EC_POINT
copy_bigint_attr(&point, KEY_PUB_EC_POINT(pbk));
copy_bigint_attr(&point, KEY_PUB_EC_POINT(pbk));
bigint_attr_cleanup(KEY_PUB_EC_POINT(pbk));
rv = copy_bigint(KEY_PUB_EC_POINT(pbk),
KEY_PUB_EC_POINT(old_pub_key_obj_p));
copy_bigint_attr(&value, KEY_PUB_EC_POINT(pbk));