void testSignAndVerifyRoundTripSmb202() throws GeneralSecurityException {
            Smb2SigningDigest digest1 = new Smb2SigningDigest(sessionKey, Smb2Constants.SMB2_DIALECT_0202, null);
            Smb2SigningDigest digest2 = new Smb2SigningDigest(sessionKey, Smb2Constants.SMB2_DIALECT_0202, null);

            byte[] data = new byte[128];
            Arrays.fill(data, (byte) 0x42);

            assertTrue(dialect >= Smb2Constants.SMB2_DIALECT_0202,
                    "Dialect " + String.format("0x%04X", dialect) + " should be >= SMB 2.0.2");
        }

        @Test
        @DisplayName("Dialects should be in ascending order")
        void testDialectOrdering() {
            assertTrue(Smb2Constants.SMB2_DIALECT_0202 < Smb2Constants.SMB2_DIALECT_0210, "SMB 2.0.2 should be less than SMB 2.1");

     */
    public static final int SMB2_NEGOTIATE_SIGNING_REQUIRED = 0x0002;

    /**
     * SMB 2.0.2 dialect (Windows Vista/Server 2008)
     */
    public static final int SMB2_DIALECT_0202 = 0x0202;

    /**
     * SMB 2.1 dialect (Windows 7/Server 2008R2)
     */
    public static final int SMB2_DIALECT_0210 = 0x0210;

    /**
     * SMB 3.0 dialect (Windows 8/Server 2012)
     */

 *
 * @author mbechler
 */
public enum DialectVersion {

    /**
     * Legacy SMB1/CIFS
     */
    SMB1,

    /**
     * SMB 2.02 - Windows Vista+
     */
    SMB202(Smb2Constants.SMB2_DIALECT_0202),

    /**
     * SMB 2.1 - Windows 7/Server 2008R2
     */
    SMB210(Smb2Constants.SMB2_DIALECT_0210),

    /**
     * SMB 3.0 - Windows 8/Server 2012
     */

     */
    public Smb2SigningDigest(final byte[] sessionKey, final int dialect, final byte[] preauthIntegrityHash)
            throws GeneralSecurityException {
        switch (dialect) {
        case Smb2Constants.SMB2_DIALECT_0202:
        case Smb2Constants.SMB2_DIALECT_0210:
            this.algorithmName = "HmacSHA256";
            this.provider = null;
            this.signingKey = sessionKey.clone();
            break;

                r.received();

                if (r.getDialectRevision() == Smb2Constants.SMB2_DIALECT_ANY) {
                    return negotiate2(r);
                } else if (r.getDialectRevision() != Smb2Constants.SMB2_DIALECT_0202) {
                    throw new CIFSException("Server returned invalid dialect verison in multi protocol negotiation");
                }

                final int permits = r.getInitialCredits();