}
        if (masterPassword != null) {
            Arrays.fill(masterPassword, '\0');
        }
    }

    @Test
    public void testEncryptDecrypt() throws Exception {
        char[] plaintext = "SecretPassword123".toCharArray();

        // Encrypt
        byte[] encrypted = storage.encryptCredentials(plaintext);
        assertNotNull(encrypted, "Encrypted data should not be null");

    void testSensitiveDataMasking() {
        logger.setSensitiveDataMaskingEnabled(true);

        Map<String, Object> context = new HashMap<>();
        context.put("password", "secretpassword123");
        context.put("sessionId", "abc123def456");
        context.put("username", "******@****.***");

        logger.logEvent(EventType.AUTHENTICATION_SUCCESS, Severity.INFO, "Login attempt", context);