}

    @Test
    @DisplayName("readSecurityBuffer correctly extracts data")
    void testReadSecurityBuffer() {
        byte[] buf = new byte[8 + 4];
        byte[] payload = { 0x11, 0x22, 0x33, 0x44 };
        NtlmMessage.writeSecurityBuffer(buf, 0, 8, payload);
        byte[] extracted = NtlmMessage.readSecurityBuffer(buf, 0);

            final byte[] domain = readSecurityBuffer(material, 16);
            suppliedDomain = new String(domain, getOEMEncoding());
        }
        String suppliedWorkstation = null;
        if ((flags & NTLMSSP_NEGOTIATE_OEM_WORKSTATION_SUPPLIED) != 0) {
            final byte[] workstation = readSecurityBuffer(material, 24);

            final byte[] domain = readSecurityBuffer(material, pos);
            setSuppliedDomain(new String(domain, getOEMEncoding()));
        }
        pos += 8;

        if ((flags & NTLMSSP_NEGOTIATE_OEM_WORKSTATION_SUPPLIED) != 0) {
            final byte[] workstation = readSecurityBuffer(material, pos);
            setSuppliedWorkstation(new String(workstation, getOEMEncoding()));

    }

    static int readUShort(final byte[] src, final int index) {
        return src[index] & 0xff | (src[index + 1] & 0xff) << 8;
    }

    static byte[] readSecurityBuffer(final byte[] src, final int index) {
        final int length = readUShort(src, index);
        final int offset = readULong(src, index + 4);
        final byte[] buffer = new byte[length];

    }

    static int readUShort(final byte[] src, final int index) {
        return src[index] & 0xff | (src[index + 1] & 0xff) << 8;
    }

    static byte[] readSecurityBuffer(final byte[] src, final int index) {
        final int length = readUShort(src, index);
        final int offset = readULong(src, index + 4);
        final byte[] buffer = new byte[length];