/**
* {@inheritdoc}
* @param OAuthRequest $request
* @param string $consumer_secret
* @param string $token_secret
* @param string $signature
* @return bool
*/
public function check_signature($request, $consumer_secret, $token_secret, $signature)
{
$decoded_sig = base64_decode($signature);
$base_string = $request->get_signature_base_string();
// Fetch the public key cert based on the request
$cert = $this->fetch_public_certificate($request);
// Pull the public key ID from the certificate
$publickeyid = openssl_get_publickey($cert);
// Check the computed signature against the one passed in the query
$ok = openssl_verify($base_string, $decoded_sig, $publickeyid);
// Release the key resource
openssl_free_key($publickeyid);
return $ok == 1;
}
