get_legacy_evp_names
get_legacy_evp_names(NID_undef, EVP_CIPHER_get_type(cipher), NULL, arg);
get_legacy_evp_names(0, EVP_MD_get_type(md), NULL, arg);
get_legacy_evp_names(0, nid, "DHX", arg);
get_legacy_evp_names(0, nid, pem_name, arg);
get_legacy_evp_names(0, nid, pem_name, arg);
get_legacy_evp_names(base_nid, nid, pem_name, arg);