public function getResponseSignatureBase($responseWithoutSignature) {
		$keys = $this->getExpectedResponseKeysOrder();
		if ($keys) {
			$baseString = Crypto::createSignatureBaseWithOrder($responseWithoutSignature, $keys, false);
		} else {
			$baseString = Crypto::createSignatureBaseFromArray($responseWithoutSignature, false);
		}
		return $baseString;
	}