assertNotNull(derivedKey256);
        assertEquals(32, derivedKey256.length);
    }

    /**
     * Test method for {@link jcifs.pac.PacMac#expandNFold(byte[], int)}.
     */
    @Test
    void testExpandNFold() {
        // Test basic functionality
        byte[] data = { 1, 2, 3 };
        int outlen = 5;
        byte[] expanded = PacMac.expandNFold(data, outlen);
        assertNotNull(expanded);