/**
* @param OpenIdCheckAuthenticationRequest $request
* @param $macAlg
* @param $secret
* @param $claimed_sig
* @return bool
*/
public static function verify(OpenIdCheckAuthenticationRequest $request, $macAlg, $secret, $claimed_sig)
{
$res = false;
$signed = $request->getSigned();
$claimed_signed = explode(',', $signed);
ksort($claimed_signed);
$data = '';
foreach ($claimed_signed as $key) {
$key_php = str_ireplace('.', '_', $key);
$val = $request->getParam($key_php);
$data .= $key . ':' . $val . "\n";
}
$computed_sig = base64_encode(OpenIdCryptoHelper::computeHMAC($macAlg, $data, $secret));
if ($claimed_sig == $computed_sig) {
$res = true;
}
return $res;
}
protected function canHandle(OpenIdMessage $message)
{
$res = OpenIdCheckAuthenticationRequest::IsOpenIdCheckAuthenticationRequest($message);
return $res;
}