@Override
            public String encrypt(String plainText) {
                return "encrypted:" + plainText;
            }

            @Override
            public String decrypt(String cryptedText) {
                return cryptedText.startsWith("encrypted:") ? cryptedText.substring("encrypted:".length()) : cryptedText;
            }
        };

        assertEquals(expect, ParameterUtil.encrypt(value));

        value = "";
        expect = "";
        assertEquals(expect, ParameterUtil.encrypt(value));

        value = "\n";
        expect = "";
        assertEquals(expect, ParameterUtil.encrypt(value));

        value = "=";
        expect = "unknown.1=";
        assertEquals(expect, ParameterUtil.encrypt(value));

        value = "=1\n=";

        assertNotNull(cryptographer);

        String plainText = "Hello, World!";
        String encrypted = cryptographer.encrypt(plainText);
        assertNotNull(encrypted);
        assertFalse(plainText.equals(encrypted));

        String decrypted = cryptographer.decrypt(encrypted);
        assertEquals(plainText, decrypted);
    }

    public void test_invertibleCryptography_withEmptyString() {

    /**
     * Encrypts the given data.
     *
     * @param data
     *            the data to encrypt
     * @return the encrypted data
     */
    public byte[] encrypto(final byte[] data) {
        final Cipher cipher = pollEncryptoCipher();
        byte[] encrypted;
        try {
            encrypted = cipher.doFinal(data);
        } catch (final IllegalBlockSizeException e) {

                    }
                }
            }
        }
        return paramMap;
    }

    /**
     * Encrypts sensitive parameter values.
     *
     * @param value the parameter string
     * @return the encrypted parameter string
     */
    public static String encrypt(final String value) {
        final StringBuilder buf = new StringBuilder();

        deleteUserCodeFromCookie(request);
        return userCode;
    }

    /**
     * Creates an encrypted user code from a user ID.
     * The user ID is encrypted using the primary cipher and validated against the configuration.
     *
     * @param userCode the raw user ID to encrypt
     * @return the encrypted and validated user code, or null if invalid
     */
    protected String createUserCodeFromUserId(String userCode) {

    }

    /**
     * Stores a web authentication configuration.
     * Parameters are encrypted before storage.
     *
     * @param webAuthentication The web authentication configuration to store
     */
    public void store(final WebAuthentication webAuthentication) {
        webAuthentication.setParameters(ParameterUtil.encrypt(webAuthentication.getParameters()));
        webAuthenticationBhv.insertOrUpdate(webAuthentication, op -> {

    /**
     * Stores a file authentication configuration.
     * The parameters are encrypted before storage for security.
     *
     * @param fileAuthentication the file authentication configuration to store
     */
    public void store(final FileAuthentication fileAuthentication) {
        fileAuthentication.setParameters(ParameterUtil.encrypt(fileAuthentication.getParameters()));

     * This method encrypts the configuration parameters before saving and
     * performs an insert or update operation based on whether the configuration exists.
     *
     * @param fileConfig the file configuration to be stored
     */
    public void store(final FileConfig fileConfig) {
        fileConfig.setConfigParameter(ParameterUtil.encrypt(fileConfig.getConfigParameter()));

    }

    /**
     * Stores a web configuration.
     * Configuration parameters are encrypted before storage.
     *
     * @param webConfig The web configuration to store
     */
    public void store(final WebConfig webConfig) {
        webConfig.setConfigParameter(ParameterUtil.encrypt(webConfig.getConfigParameter()));
        webConfigBhv.insertOrUpdate(webConfig, op -> {