KerberosPrincipal clientPrincipal = new KerberosPrincipal( "hnelson@EXAMPLE.COM" );
String passPhrase = "secret";
PaData[] paData = getPreAuthEncryptedTimeStamp( clientPrincipal, passPhrase );
KdcRequest message = new KdcRequest( 5, KerberosMessageType.AS_REQ, paData, modifier.getRequestBody() );
handler.messageReceived( session, message );
AuthenticationReply reply = ( AuthenticationReply ) session.getMessage();