break;
            }
        }
        assertEquals(true, different, "Different keys should produce different HMAC values");
    }

    @Test
    void testDifferentDataProducesDifferentResults() {
        // Test that different data produces different results
        byte[] data1 = "data1".getBytes();
        byte[] data2 = "data2".getBytes();

        HMACT64 hmac1 = new HMACT64(TEST_KEY);