public Type2Message(int flags, byte[] challenge, String target) {
        setFlags(flags);
        setChallenge(challenge);
        setTarget(target);
        if (target != null) setTargetInformation(getDefaultTargetInformation());
    }

    /**
     * Creates a Type-2 message using the given raw Type-2 material.
     *
     * @param material The raw Type-2 material used to construct this message.