}

    private static final byte[] DEFAULT_ADDRESS = new byte[] { (byte) 127, (byte) 0, (byte) 0, (byte) 1 };

    private static final SecureRandom RANDOM = new SecureRandom();

    private static final String BASE = StringUtil.toHex(getAddress()) + StringUtil.toHex(System.identityHashCode(RANDOM));

    /**
     * Creates a UUID.
     *
     * @return the UUID string
     */
    public static String create() {

     */
    public PreauthIntegrityService(SecureRandom secureRandom, int hashAlgorithm, boolean enforceIntegrity) {
        this.secureRandom = secureRandom != null ? secureRandom : new SecureRandom();
        this.selectedHashAlgorithm = hashAlgorithm;
        this.enforceIntegrity = enforceIntegrity;
    }

    /**
     * Generates a new preauth salt for SMB 3.1.1 negotiation.
     *

    private static final int GCM_IV_SIZE = 12;
    private static final int SALT_SIZE = 32;
    private static final int PBKDF2_ITERATIONS = 100_000;

    private final SecureRandom secureRandom = new SecureRandom();
    private volatile SecretKey masterKey;
    private volatile byte[] salt;
    private volatile boolean destroyed = false;

    /**
     * Initialize secure credential storage with a master password

 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.helper;

import java.security.SecureRandom;
import java.util.Random;

import org.apache.commons.lang3.RandomStringUtils;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.exception.InvalidAccessTokenException;

 */
package jcifs.internal.smb2.lease;

import java.security.SecureRandom;
import java.util.Arrays;

/**
 * SMB2 Lease Key
 *
 * Represents a 16-byte lease key used to identify leases in SMB2/SMB3
 * MS-SMB2 2.2.13.2.8
 */
public class Smb2LeaseKey {

    private final byte[] key;
    private static final SecureRandom RANDOM = new SecureRandom();
    private static final int LEASE_KEY_SIZE = 16;

    /**

    private final DialectVersion dialect;
    private byte[] encryptionKey;
    private byte[] decryptionKey;
    private final AtomicLong nonceCounter = new AtomicLong(0);
    private final SecureRandom secureRandom = new SecureRandom();

    // Secure key management
    private SecureKeyManager keyManager;
    private String sessionId;
    private volatile boolean closed = false;

    @Test
    @DisplayName("Random access should delegate to underlying configuration")
    void testRandomDelegation() {
        // Given
        SecureRandom expectedRandom = new SecureRandom();
        when(mockDelegate.getRandom()).thenReturn(expectedRandom);

        // When
        SecureRandom result = delegatingConfig.getRandom();

        // Then
        assertSame(expectedRandom, result, "Should return delegated random");

    private final Map<String, SecretKey> sessionKeys = new ConcurrentHashMap<>();
    private final Map<String, byte[]> rawKeys = new ConcurrentHashMap<>();
    private final SecureRandom secureRandom = new SecureRandom();
    private KeyStore keyStore;
    private char[] keyStorePassword;
    private volatile boolean closed = false;

    /**
     * Create a secure key manager without KeyStore
     */

## 4. Data Structures

### 4.1 Lease Key Structure
```java
package jcifs.internal.smb2.lease;

import java.security.SecureRandom;
import java.util.Arrays;

public class Smb2LeaseKey {
    private final byte[] key;  // 16-byte lease key
    private static final SecureRandom random = new SecureRandom();
    
    public Smb2LeaseKey() {
        this.key = new byte[16];
        random.nextBytes(this.key);
    }
    

    private static final String DEFAULT_PASSWORD;

    private static final String DEFAULT_WORKSTATION;

    private static final int LM_COMPATIBILITY;

    private static final SecureRandom RANDOM = new SecureRandom();

    private byte[] lmResponse;

    private byte[] ntResponse;

    private String domain;

    private String user;

    private String workstation;