*
     * @return A <code>byte[]</code> containing the challenge.
     */
    public byte[] getChallenge () {
        return this.challenge;
    }


    /**
     * Sets the challenge for this message.
     *
     * @param challenge
     *            The challenge from the domain controller/server.
     */
    public void setChallenge ( byte[] challenge ) {

     *
     * @return A <code>byte[]</code> containing the challenge.
     */
    public byte[] getChallenge() {
        return challenge;
    }

    /**
     * Sets the challenge for this message.
     *
     * @param challenge The challenge from the domain controller/server.
     */
    public void setChallenge(byte[] challenge) {
        this.challenge = challenge;
    }