/**
 * Base class for NTLMSSP AV (Attribute-Value) pairs used in NTLM authentication.
 * Provides common functionality for encoding and decoding attribute-value pairs.
 *
 * @author mbechler
 */
public class AvPair {

    /**
     * EOL type
     */
    public static final int MsvAvEOL = 0x0;

    /**
     * Flags type
     */
    public static final int MsvAvFlags = 0x6;

    /**
     * Timestamp type

        // Test with a valid type and raw data
        int type = AvPair.MsvAvTimestamp;
        byte[] raw = new byte[] { 0x01, 0x02, 0x03, 0x04 };
        AvPair avPair = new AvPair(type, raw);

        assertEquals(type, avPair.getType(), "Type should match the constructor argument.");
        assertArrayEquals(raw, avPair.getRaw(), "Raw data should match the constructor argument.");

        return enc;
    }

    private static AvPair parseAvPair(final int avId, final byte[] raw) {
        return switch (avId) {
        case AvPair.MsvAvFlags -> new AvFlags(raw);
        case AvPair.MsvAvTimestamp -> new AvTimestamp(raw);
        case AvPair.MsvAvTargetName -> new AvTargetName(raw);
        case AvPair.MsvAvSingleHost -> new AvSingleHost(raw);
        case AvPair.MsvAvChannelBindings -> new AvChannelBindings(raw);

        List<AvPair> pairs = new LinkedList<>();
        pairs.add(new AvFlags(0x12345678));
        pairs.add(new AvTimestamp(new byte[8]));

        assertTrue(AvPairs.contains(pairs, AvPair.MsvAvFlags), "Should find MsvAvFlags");
        assertTrue(AvPairs.contains(pairs, AvPair.MsvAvTimestamp), "Should find MsvAvTimestamp");

     * Verifies that the AvPair type is correctly set and raw bytes are stored.
     */
    @Test
    void testConstructorWithRawBytes() {
        byte[] rawBytes = "TEST_TARGET_NAME".getBytes(StandardCharsets.UTF_16LE);
        AvTargetName avTargetName = new AvTargetName(rawBytes);

        // Verify the AvPair type is MsvAvTargetName

 *
 * @author mbechler
 */
public class AvTimestamp extends AvPair {

    /**
     * Constructs an AvTimestamp from raw byte data
     *
     * @param raw the raw byte data for the timestamp AV pair
     */
    public AvTimestamp(final byte[] raw) {
        super(AvPair.MsvAvTimestamp, raw);
    }

    /**
     * Constructs an AvTimestamp with the specified timestamp value

 * Contains flag values used in NTLM authentication attribute-value pairs.
 *
 * @author mbechler
 */
public class AvFlags extends AvPair {

    /**
     * Constructs an AV flags pair from raw bytes
     * @param raw the raw flag bytes
     */
    public AvFlags(final byte[] raw) {
        super(AvPair.MsvAvFlags, raw);
    }

    /**
     * Constructs an AV flags pair from integer flags

 *
 * @author mbechler
 */
public class AvChannelBindings extends AvPair {

    /**
     * Constructs an AV channel bindings pair
     * @param channelBindingHash the channel binding hash value
     */
    public AvChannelBindings(final byte[] channelBindingHash) {
        super(AvPair.MsvAvChannelBindings, channelBindingHash);
    }

 *
 * @author mbechler
 */
public class AvSingleHost extends AvPair {

    /**
     * Constructs an AvSingleHost from raw byte data
     *
     * @param raw the raw byte data for the single host AV pair
     */
    public AvSingleHost(final byte[] raw) {
        super(AvPair.MsvAvSingleHost, raw);
    }

    /**
     * Constructs an AvSingleHost using configuration settings

 * @author mbechler
 */
public class AvTargetName extends AvPair {

    /**
     *
     */
    private static final Charset UTF16LE = StandardCharsets.UTF_16LE;

    /**
     * Constructs an AvTargetName from raw byte data
     *
     * @param raw the raw byte data for the target name AV pair
     */
    public AvTargetName(final byte[] raw) {
        super(AvPair.MsvAvTargetName, raw);
    }

    /**