* - Secure wiping of sensitive data
 * - Thread-safe operations
 * - Protection against timing attacks
 */
public class SecureCredentialStorage implements AutoCloseable, Destroyable {

    private static final Logger log = LoggerFactory.getLogger(SecureCredentialStorage.class);

    private static final String ENCRYPTION_ALGORITHM = "AES/GCM/NoPadding";
    private static final String KEY_ALGORITHM = "AES";

/**
 * Test cases for SecureCredentialStorage
 */
@TestInstance(Lifecycle.PER_METHOD)
public class SecureCredentialStorageTest {

    private SecureCredentialStorage storage;
    private char[] masterPassword;

    @BeforeEach
    public void setUp() throws Exception {
        masterPassword = "MasterPassword123!@#".toCharArray();
        storage = new SecureCredentialStorage(masterPassword.clone());
    }