final String challenge) throws NTLMEngineException {
        Type2Message type2Message;
        try {
            type2Message = new Type2Message(Base64.getDecoder().decode(challenge));
        } catch (final IOException exception) {
            throw new NTLMEngineException("Invalid NTLM type 2 message", exception);
        }
        final int type2Flags = type2Message.getFlags();

     * @throws SmbException if an error occurs during message creation
     */
    protected byte[] makeAuthenticate(final byte[] token) throws SmbException {
        try {
            final Type2Message msg2 = new Type2Message(token);

            if (log.isTraceEnabled()) {
                log.trace(msg2.toString());
                log.trace(Hexdump.toHexString(token));
            }