/**
     * Creates a new MD4 message digest instance.
     * Initializes the digest with the MD4 algorithm parameters.
     */
    public MD4() {
        super("MD4");
        engineReset();
    }

    /**
     *    This constructor is here to implement cloneability of this class.
     */
    private MD4(final MD4 md) {
        this();
        context = md.context.clone();

    @Test
    @DisplayName("Should calculate MD4 hash correctly")
    void testMD4Hash() {
        // Given
        String input = "Hello World";
        byte[] data = input.getBytes();

        // When
        MessageDigest md4 = Crypto.getMD4();
        byte[] hash = md4.digest(data);

        // Then
        assertNotNull(hash);
        assertEquals(16, hash.length); // MD4 produces 128-bit hash
    }

    @Test

    /**
     *
     */
    private Crypto() {
    }

    /**
     * Get an MD4 message digest instance.
     * @return MD4 digest instance
     */
    public static MessageDigest getMD4() {
        try {
            return MessageDigest.getInstance("MD4", getProvider());
        } catch (final NoSuchAlgorithmException e) {
            throw new CIFSUnsupportedCryptoException(e);
        }