SAML2\Configuration\ServiceProvider::getBlacklistedAlgorithms PHP Method

    public function getBlacklistedAlgorithms()
    {
        return $this->get('blacklistedEncryptionAlgorithms', array(XMLSecurityKey::RSA_1_5));
    }

 /**
  * @param \SAML2\EncryptedAssertion $assertion
  *
  * @return \SAML2\Assertion
  */
 public function decrypt(EncryptedAssertion $assertion)
 {
     $decryptionKeys = $this->privateKeyLoader->loadDecryptionKeys($this->identityProvider, $this->serviceProvider);
     $blacklistedKeys = $this->identityProvider->getBlacklistedAlgorithms();
     if (is_null($blacklistedKeys)) {
         $blacklistedKeys = $this->serviceProvider->getBlacklistedAlgorithms();
     }
     // reflects the simplesamlphp behaviour for BC, see
     // https://github.com/simplesamlphp/simplesamlphp/blob/3d735912342767d391297cc5e13272a76730aca0/modules/saml/lib/Message.php#L369
     foreach ($decryptionKeys as $index => $key) {
         try {
             $decryptedAssertion = $assertion->getAssertion($key, $blacklistedKeys);
             $this->logger->debug(sprintf('Decrypted Assertion with key "#%d"', $index));
             return $decryptedAssertion;
         } catch (\Exception $e) {
             $this->logger->debug(sprintf('Could not decrypt assertion with key "#%d", "%s" thrown: "%s"', $index, get_class($e), $e->getMessage()));
         }
     }
     throw new NotDecryptedException(sprintf('Could not decrypt the assertion, tried with "%d" keys. See the debug log for more information', count($decryptionKeys)));
 }