private function getSignedXml()
{
$doc = new \DOMDocument();
$doc->appendChild($doc->createElement('root'));
/** @var $root \DOMElement */
$root = $doc->firstChild;
$root->setAttribute('foo', 'bar');
$other = $doc->createElement('other');
$root->appendChild($other);
$child = $doc->createElement('child', 'something');
$other->appendChild($child);
$certificate = new X509Certificate();
$certificate->loadFromFile(__DIR__ . '/../../../../../../../resources/sample/Certificate/saml.crt');
$key = new \XMLSecurityKey(\XMLSecurityKey::RSA_SHA1, array('type' => 'private'));
$key->loadKey(__DIR__ . '/../../../../../../../resources/sample/Certificate/saml.pem', true);
$signatureCreator = new SignatureCreator();
$signatureCreator->setCertificate($certificate);
$signatureCreator->setXmlSecurityKey($key);
$context = new SerializationContext($doc);
$signatureCreator->getXml($root, $context);
$xml = $doc->saveXML();
return $xml;
}
