private byte[] testMachineId = new byte[16];
    private byte[] testSalt = new byte[32];

    @BeforeEach
    void setUp() {
        mockConfig = mock(Configuration.class);
        mockContext = mock(CIFSContext.class);
        mockRandom = mock(SecureRandom.class);

        // Initialize test data
        for (int i = 0; i < 16; i++) {
            testMachineId[i] = (byte) (i + 1);
        }