EncKrbPrivPartModifier modifier = new EncKrbPrivPartModifier();
byte[] resultCode =
{ ( byte ) 0x00, ( byte ) 0x00 };
modifier.setUserData( resultCode );
modifier.setSenderAddress( new HostAddress( InetAddress.getLocalHost() ) );
EncKrbPrivPart privPart = modifier.getEncKrbPrivPart();
// get the subsession key from the Authenticator
EncryptionKey subSessionKey = authenticator.getSubSessionKey();