assertEquals("value with spaces", paramMap.get("key_with_underscores"));
        assertEquals("value@#$%", paramMap.get("key-with-dashes"));
    }

    @Test
    public void test_encrypt_advancedScenarios() {
        String value;
        String result;

        // Test with already encrypted values (using valid hex)
        value = "password={cipher}5691346cc398a4450114883140fa84a7";