*
 * Provides secure storage of passwords and other sensitive credentials
 * using AES-GCM encryption with PBKDF2 key derivation.
 *
 * Features:
 * - Encrypts credentials at rest using AES-256-GCM
 * - Uses PBKDF2 for key derivation from master password
 * - Secure wiping of sensitive data
 * - Thread-safe operations
 * - Protection against timing attacks
 */

    /**
     * Derive a new key from an existing key
     *
     * @param baseKey the base key
     * @param label key derivation label
     * @param context key derivation context
     * @param length desired key length in bytes
     * @return derived key
     * @throws GeneralSecurityException if key derivation fails
     */

        }

        // Increment rotation counter for tracking and key derivation
        rotationCount++;

        // SMB3-compliant key rotation: Use rotation counter as per SMB3 specification
        // This follows Microsoft's approach for predictable but unique key derivation
        byte[] modifiedSessionKey = new byte[sessionKey.length + 8];

import org.junit.jupiter.api.Test;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.ValueSource;

/**
 * Test class for Smb3KeyDerivation.
 * Tests the SMB3 SP800-108 Counter Mode Key Derivation implementation.
 */
@DisplayName("Smb3KeyDerivation Tests")
class Smb3KeyDerivationTest {

    private byte[] sessionKey;
    private byte[] preauthIntegrity;

    @BeforeEach
    void setUp() {

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