assertEquals(0, messageBytes[10] & 0xFF);
        assertEquals(0, messageBytes[11] & 0xFF);
    }

    @Test
    @DisplayName("Should handle Unicode negotiation flag")
    void testUnicodeNegotiation() {
        // Given
        int unicodeFlags = NtlmFlags.NTLMSSP_NEGOTIATE_UNICODE;
        int oemFlags = NtlmFlags.NTLMSSP_NEGOTIATE_OEM;

        // When