*            negotiated cipher identifier
     * @param dialect
     *            SMB dialect version
     * @param encryptionKey
     *            key for client->server encryption
     * @param decryptionKey
     *            key for server->client decryption
     */
    public Smb2EncryptionContext(final int cipherId, final DialectVersion dialect, final byte[] encryptionKey, final byte[] decryptionKey) {

                assertTrue(dialectCodes.add(dialect), "Dialect code should be unique for " + version);
            }
        }

        // Should have 5 unique dialect codes for SMB2+ versions
        assertEquals(5, dialectCodes.size());
    }

    /**
     * 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)
     */
    public static final int SMB2_DIALECT_0300 = 0x0300;

                dialect == Smb2Constants.SMB2_DIALECT_0311 ? preauthIntegrity : SIGNCONTEXT_300);
    }

    /**
     * Derives the SMB3 application key from the session key using the appropriate KDF for the dialect.
     *
     * @param dialect the SMB dialect version
     * @param sessionKey the base session key

     * @return whether the protocol negotiation was successful
     */
    boolean isValid(CIFSContext cifsContext, SmbNegotiationRequest request);

    /**
     * Gets the SMB dialect version selected by the server.
     *
     * @return selected dialect
     */
    DialectVersion getSelectedDialect();

    /**
     * Checks whether the server has SMB message signing enabled.
     *

    }

    @Test
    @DisplayName("Should return dialect revision")
    void testGetDialectRevision() throws Exception {
        // Given
        setPrivateField(response, "dialectRevision", 0x0311);

        // When
        int dialect = response.getDialectRevision();

        // Then
        assertEquals(0x0311, dialect);
    }

    @Test
    @DisplayName("Should return server GUID")

    }

    @Test
    @DisplayName("Should return correct dialect version")
    void testGetDialect() {
        // When
        DialectVersion dialect = encryptionContext.getDialect();

        // Then
        assertEquals(DialectVersion.SMB311, dialect, "Should return the dialect set in constructor");
    }

    @Test
    @DisplayName("Should handle SMB 3.0 dialect")
    void testSMB300Dialect() {
        // When

     * Test validation of excessive negotiate context count.
     */
    @Test
    public void testExcessiveNegotiateContextCount() {
        byte[] buffer = createBasicNegotiateResponseBuffer();
        // Set SMB 3.1.1 dialect
        SMBUtil.writeInt2(0x0311, buffer, 4);
        // Set excessive negotiate context count (should be limited to 100)
        SMBUtil.writeInt2(1000, buffer, 6);
        // Set negotiate context offset to valid value

        try (SmbSessionImpl session = this.treeConnection.getSession(); SmbTransportImpl transport = session.getTransport()) {
            jcifs.DialectVersion dialect = transport.getNegotiateResponse().getSelectedDialect();
            return transport.isSMB2() && dialect.atLeast(jcifs.DialectVersion.SMB300) && !dialect.atLeast(jcifs.DialectVersion.SMB311);
        } catch (final SmbException e) {

        // Then
        assertTrue(testConfig.isUseUnicode());
        assertFalse(testConfig.isDisablePlainTextPasswords());
    }

    @Test
    @DisplayName("Should handle dialect version properties")
    void testDialectVersionProperties() throws CIFSException {
        // Given
        Properties props = new Properties();
        props.setProperty("jcifs.smb.client.minVersion", "SMB1");