public function validateResponseSignature(\GSResponse $response)
{
if ($response->getErrorCode() != 0 || $this->responseHasSignature($response)) {
return new \Exception('Invalid response');
}
$uid = $response->getString('UID', '');
$timestamp = $response->getString('signatureTimestamp', '');
$uidSignature = $response->getString('UIDSignature', '');
return \SigUtils::validateUserSignature($uid, $timestamp, $this->secretKey, $uidSignature);
}
