EVP_PKEY_fromdata_settable
const OSSL_PARAM *EVP_PKEY_fromdata_settable(EVP_PKEY_CTX *ctx, int selection);
|| !TEST_ptr(EVP_PKEY_fromdata_settable(ctx, OSSL_KEYMGMT_SELECT_KEYPAIR))
|| !TEST_ptr_null(EVP_PKEY_fromdata_settable(ctx, 0)))