if (this.encryptionKey != null) {
            // Multi-pass secure wipe for enhanced security
            SecureKeyManager.secureWipe(this.encryptionKey);
            this.encryptionKey = null;
        }
        if (this.decryptionKey != null) {
            // Multi-pass secure wipe for enhanced security
            SecureKeyManager.secureWipe(this.decryptionKey);
            this.decryptionKey = null;

- **Type Conversion** (`org.codelibs.core.convert`) - Comprehensive utilities for converting between Java types with null-safe operations and support for all primitive types
- **Collections** (`org.codelibs.core.collection`) - Enhanced collection utilities, array operations, and specialized map/set implementations including LRU caches and case-insensitive collections

        cbToClose.close();
    }

    @Test
    public void testEnhancedMetricsTracking() throws Exception {
        SmbCircuitBreaker cbWithEnhanced = new SmbCircuitBreaker("enhanced-test");

        try {
            // Execute operations to generate metrics
            for (int i = 0; i < 5; i++) {
                cbWithEnhanced.executeWithCircuitBreaker(() -> "success");
            }

import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;

import jcifs.CIFSException;
import jcifs.smb.PreauthIntegrityService.PreauthIntegrityContext;

/**
 * Comprehensive tests for enhanced pre-authentication integrity service.
 */
public class PreauthIntegrityServiceTest {

    private PreauthIntegrityService preauthService;
    private SecureRandom secureRandom;

    @BeforeEach

import java.util.concurrent.ConcurrentMap;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import jcifs.CIFSException;
import jcifs.internal.smb2.nego.PreauthIntegrityNegotiateContext;

/**
 * Enhanced Pre-Authentication Integrity Service for SMB 3.1.1.
 *
 * Provides comprehensive pre-authentication integrity protection against
 * downgrade attacks by maintaining cryptographic hash chains of all

import java.util.HashMap;
import java.util.Map;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import jcifs.CIFSException;

/**
 * Unified exception class for SMB operations providing enhanced error handling,
 * retry policies, and contextual information.
 *
 * This exception consolidates the various SMB exception types and provides:
 * - Standardized error codes
 * - Automatic retry policies

             * the activated profiles can cause repo declarations to be lost which in turn will result in artifact
             * resolution failures, in particular when using the enhanced local repo which guards access to local files
             * based on the configured remote repos.
             */
            MavenSession session = legacySupport.getSession();
            if (session != null) {

    }

    /**
     * Determine optimal polling interval based on directory activity and failure count
     *
     * Current strategy is based on failure count. In the future, this could be enhanced to consider:
     * - Recent event frequency (successful notifications)
     * - Time since last successful notification
     * - Events per unit time for more adaptive behavior
     *

## Overview
This document outlines the implementation plan for advanced SMB3 features that are currently not implemented in JCIFS. These features are essential for enterprise-grade SMB3 support, providing enhanced performance, reliability, and scalability.

## Implementation Phases

### Phase 1: SMB3 Lease Implementation (Foundation)
**Priority: HIGH** | **Estimated Effort: 3-4 weeks**

        if (host == null || host.isEmpty()) {
            return false;
        }

        // Check for valid hostname or IP address
        // Simple validation - can be enhanced
        if (host.length() > 255) {
            return false;
        }

        // Check for invalid characters
        if (host.contains("..") || host.contains("//") || host.contains("\\\\")) {