@DisplayName("getNTHash: null password throws NPE with message")
    void testGetNTHash_null() {
        NullPointerException ex = assertThrows(NullPointerException.class, () -> NtlmUtil.getNTHash((String) null));
        assertEquals("Password parameter is required", ex.getMessage());
    }

    @ParameterizedTest
    @ValueSource(strings = { "", "password", "pässwörd", "1234567890abcdef" })
    @DisplayName("nTOWFv1 equals getNTHash across inputs")

        this.ntHash = passwordHash;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.smb.NtlmPasswordAuthenticator#getNTHash()
     */
    @Override
    protected byte[] getNTHash() {
        return this.ntHash;
    }

    @Override
    public NtlmPasswordAuthenticator clone() {

     *
     * @return the calculated mac
     */
    public static byte[] nTOWFv2(final String domain, final String username, final String password) {
        return nTOWFv2(domain, username, getNTHash(password));
    }

    /**
     * Generates the NTOWFv2 hash for the given domain, username, and password hash.
     *
     * @param domain the authentication domain
     * @param username the username

     */
    public void getUserSessionKey(CIFSContext tc, byte[] chlng, byte[] dest, int offset) throws SmbException {
        try {
            MessageDigest md4 = Crypto.getMD4();
            byte[] ntHash = getNTHash();
            switch (tc.getConfig().getLanManCompatibility()) {
            case 0:
            case 1:
            case 2:
                md4.update(ntHash);
                md4.digest(dest, offset, 16);

            setLMResponse(null);
            setNTResponse(null);
            return;
        }

        if (passwordHash == null) {
            passwordHash = NtlmUtil.getNTHash(password);
        }

        switch (tc.getConfig().getLanManCompatibility()) {
        case 0:
        case 1:
            if (!getFlag(NTLMSSP_NEGOTIATE_EXTENDED_SESSIONSECURITY)) {

        if (this.auth instanceof NtlmNtHashAuthenticator) {
            return new Type3Message(this.transportContext, msg2, this.targetName, this.auth.getNTHash(), this.auth.getUserDomain(),
                    this.auth.getUsername(), this.workstation, this.ntlmsspFlags);
        }

        // Use secure password handling
        String passwordString = null;