throw new CIFSException("No preauth integrity context found for session: " + sessionId);
            }
            log.warn("No preauth integrity context for session {}, skipping update", sessionId);
            return;
        }

        if (!context.isValid()) {
            throw new CIFSException("Preauth integrity context is invalid for session: " + sessionId);
        }

        try {

        init.setContextFlag(NegTokenInit.INTEGRITY, true);
        assertTrue(init.getContextFlag(NegTokenInit.INTEGRITY));
        assertEquals(NegTokenInit.CONFIDENTIALITY | NegTokenInit.INTEGRITY, init.getContextFlags());

        init.setContextFlag(NegTokenInit.CONFIDENTIALITY, false);
        assertFalse(init.getContextFlag(NegTokenInit.CONFIDENTIALITY));
        assertEquals(NegTokenInit.INTEGRITY, init.getContextFlags());
    }

import jcifs.Configuration;
import jcifs.internal.SMBProtocolDecodingException;
import jcifs.internal.util.SMBUtil;

/**
 * SMB2 Pre-authentication Integrity Negotiate Context.
 *
 * This negotiate context is used in SMB 3.1.1 to establish
 * pre-authentication integrity protection against downgrade attacks.
 *
 * @author mbechler
 */

        private ASN1ObjectIdentifier[] supportedMechs;
        private int flags;
        private boolean integrity;
        private boolean disposed;

        DummySSPContext(byte[] signingKey, boolean established, String nbName, ASN1ObjectIdentifier[] supportedMechs, int flags,
                boolean integrity) {
            this.signingKey = signingKey;
            this.established = established;
            this.nbName = nbName;

     *
     * @param dialect the SMB dialect version
     * @param sessionKey the base session key
     * @param preauthIntegrity the pre-authentication integrity hash (for SMB 3.1.1) or null
     * @return derived signing key
     */
    public static byte[] deriveSigningKey(final int dialect, final byte[] sessionKey, final byte[] preauthIntegrity) {

     */
    ASN1ObjectIdentifier[] getSupportedMechs();

    /**
     * Checks whether this mechanism supports message integrity.
     * @return whether this mechanisms supports integrity
     */
    boolean supportsIntegrity();

    /**
     * Calculates a Message Integrity Code (MIC) for the given data.
     * @param data the data to calculate MIC for
     * @return MIC

        transport = new SmbTransportImpl(context, address, 445, null, 0, false);
    }

    /**
     * Test that pre-auth integrity hash is properly synchronized
     */
    @Test
    @DisplayName("Pre-auth integrity hash should be thread-safe")
    void testPreauthHashThreadSafety() throws Exception {
        // Setup SMB3.1.1 negotiation

    }

    /**
     * Gets the mechanism list MIC (Message Integrity Code) for integrity protection
     * @return the mechanism list MIC bytes
     */
    public byte[] getMechanismListMIC() {
        return this.mechanismListMIC;
    }

    /**
     * Sets the mechanism list MIC (Message Integrity Code) for integrity protection
     * @param mechanismListMIC the mechanism list MIC bytes
     */

import org.mockito.Mockito;

/**
 * Tests for {@link WinError} interface constants and static arrays.
 * The interface has no instance methods, so the tests focus on
 * value correctness and array integrity.  A tiny Mockito example
 * demonstrates that the interface can be mocked if another class
 * depends on it.
 */
public class WinErrorTest {

    @Nested
    @DisplayName("Constant value checks")

 */
package jcifs.internal;

/**
 * Interface for SMB message signing and verification operations.
 * Provides cryptographic signing capabilities for SMB protocol messages to ensure
 * message integrity and authenticity using MAC (Message Authentication Code) algorithms.
 *
 * @author mbechler
 */
public interface SMBSigningDigest {

    /**
     * Performs MAC signing of the SMB. This is done as follows.