new SecureCredentialStorage(new char[0]);
        }, "Should throw IllegalArgumentException for empty master password");
    }

    @Test
    public void testSpecialCharacters() throws Exception {
        // Test with all special characters
        char[] plaintext = "!@#$%^&*()_+-=[]{}|;':\",./<>?`~\t\n\r".toCharArray();

        byte[] encrypted = storage.encryptCredentials(plaintext);

            assertNotNull(type3.getNTResponse());
        });
    }

    @Test
    @DisplayName("Should handle special characters in credentials")
    void testSpecialCharacters() throws Exception {
        // Given
        Type2Message type2 = createMockType2Message();
        String specialDomain = "TEST-DOMAIN_123";
        String specialUser = "******@****.***";