* via MD5).
 */
class HMACT64 extends MessageDigest implements Cloneable {

    private static final int BLOCK_LENGTH = 64;

    private static final byte IPAD = (byte) 0x36;

    private static final byte OPAD = (byte) 0x5c;

    private final MessageDigest md5;

    private byte[] ipad = new byte[BLOCK_LENGTH];

    private byte[] opad = new byte[BLOCK_LENGTH];

    /**

        byte[] base = buildCreateBodyNoContexts((byte) 1, (byte) 2, 3, 1000L, 2000L, 3000L, 4000L, 512L, 1024L, 0x20, fileId);

        // Create a simple context entry
        byte[] ctx = new byte[0x40];
        int ci = 0;
        SMBUtil.writeInt4(0, ctx, ci); // Next = 0 (only one)
        ci += 4;
        SMBUtil.writeInt2(0x10, ctx, ci); // NameOffset
        SMBUtil.writeInt2(4, ctx, ci + 2); // NameLength

        // This test documents the actual behavior - any tag number is accepted
        byte[] token =
                buildInitToken(new ASN1ObjectIdentifier[] { OID_KRB }, NegTokenInit.INTEGRITY, new byte[] { 0x42 }, null, false, null, 1, // Non-zero tag number is currently accepted
                        null);

        // The implementation accepts any tag number without validation
        assertDoesNotThrow(() -> {

     */
    int FLAGS_OPLOCK_REQUESTED_OR_GRANTED = 0x20;
    /**
     * Notify client of any action which modified the file flag.
     */
    int FLAGS_NOTIFY_OF_MODIFY_ACTION = 0x40;
    /**
     * Message is a response from server flag.
     */
    int FLAGS_RESPONSE = 0x80;

    /**
     * No flags2 set in SMB header.
     */
    int FLAGS2_NONE = 0x0000;
    /**

     */
    public static final int SMB2_SHARE_CAP_SCALEOUT = 0x20;

    /**
     * Share capability indicating cluster support.
     */
    public static final int SMB2_SHARE_CAP_CLUSTER = 0x40;

    /**
     * Share capability indicating asymmetric support.
     */
    public static final int SMB2_SHARE_CAP_ASYMMETRIC = 0x80;
    private byte shareType;
    private int shareFlags;

     */
    public static final int FILE_NOTIFY_CHANGE_LAST_ACCESS = 0x20;
    /**
     * Notify when creation time changes
     */
    public static final int FILE_NOTIFY_CHANGE_CREATION = 0x40;
    /**
     * Notify when extended attributes change
     */
    public static final int FILE_NOTIFY_CHANGE_EA = 0x80;
    /**
     * Notify when security descriptor changes
     */

        assertEquals(0x20, SecurityInfo.ATTRIBUTE_SECURITY_INFO);
    }

    @Test
    @DisplayName("Test SCOPE_SECURITY_INFO constant value")
    void testScopeSecurityInfo() {
        assertEquals(0x40, SecurityInfo.SCOPE_SECURITY_INFO);
    }

    @Test
    @DisplayName("Test BACKUP_SECURITY_INFO constant value")
    void testBackupSecurityInfo() {
        assertEquals(0x1000, SecurityInfo.BACKUP_SECURITY_INFO);

     */
    public static final int DELEGATION = 0x80;
    /**
     * Context flag for mutual authentication requirement
     */
    public static final int MUTUAL_AUTHENTICATION = 0x40;
    /**
     * Context flag for replay detection capability
     */
    public static final int REPLAY_DETECTION = 0x20;
    /**
     * Context flag for sequence checking capability
     */

        assertEquals(outlen, expanded.length);

        // Test vectors from RFC 3961 Appendix A.1
        // 64-fold("012345")
        verifyNfold("012345", 8,
                new byte[] { (byte) 0xbe, (byte) 0x07, (byte) 0x26, (byte) 0x31, (byte) 0x27, (byte) 0x6b, (byte) 0x19, (byte) 0x55 });

        // 56-fold("password")
        verifyNfold("password", 7,

    void testSetFlagTrue() {
        msg.setFlag(0x4, true);
        assertTrue(msg.getFlag(0x4), "Bit should be set after setFlag(true)");
    }

    @Test
    @DisplayName("setFlag false clears the bit")
    void testSetFlagFalse() {
        msg.setFlag(0x4, true);
        msg.setFlag(0x4, false);
        assertFalse(msg.getFlag(0x4), "Bit should be cleared after setFlag(false)");
    }