@Test
public void testAES128GCM() throws Exception {
// Set up the Key
KeyGenerator keygen = KeyGenerator.getInstance("AES");
keygen.init(128);
SecretKey key = keygen.generateKey();
final XMLSecurityDataFormat xmlEncDataFormat = new XMLSecurityDataFormat();
xmlEncDataFormat.setPassPhrase(key.getEncoded());
xmlEncDataFormat.setSecureTagContents(true);
xmlEncDataFormat.setSecureTag("//cheesesites/italy/cheese");