MD4 md4 = new MD4();
            md4.update(password.getBytes(SmbConstants.UNI_ENCODING));
            HMACT64 hmac = new HMACT64(md4.digest());
            hmac.update(user.toUpperCase().getBytes(SmbConstants.UNI_ENCODING));
            hmac.update(domain.toUpperCase().getBytes(SmbConstants.UNI_ENCODING));
            hmac = new HMACT64(hmac.digest());
            hmac.update(challenge);

        verifyAESHMAC(3, expect, key, data.getBytes(StandardCharsets.US_ASCII));
    }


    @Test
    public void testAES256Checksum () throws GeneralSecurityException {
        String data = "fourteen";
        String key = "B1AE4CD8462AFF1677053CC9279AAC30B796FB81CE21474DD3DDBCFEA4EC76D7";
        String expect = "E08739E3279E2903EC8E3836";
        verifyAESHMAC(4, expect, key, data.getBytes(StandardCharsets.US_ASCII));
    }

                        domainName.getBytes(UNI_ENCODING) :
                                domainName.getBytes(oem);
            }
            int domainLength = (domain != null) ? domain.length : 0;
            String userName = getUser();
            byte[] user = null;
            if (userName != null && userName.length() != 0) {
                user = unicode ? userName.getBytes(UNI_ENCODING) :

            if ( targetName != null && targetName.length() != 0 ) {
                targetBytes = ( flags & NTLMSSP_NEGOTIATE_UNICODE ) != 0 ? targetName.getBytes(UNI_ENCODING)
                        : targetName.toUpperCase().getBytes(getOEMEncoding());
                size += targetBytes.length;
            }
            else {
                flags &= ( 0xffffffff ^ NTLMSSP_REQUEST_TARGET );
            }

        }
    }


    private static byte[] deriveKey ( byte[] masterKey, String cnst ) {
        MessageDigest md5 = Crypto.getMD5();
        md5.update(masterKey);
        md5.update(cnst.getBytes(StandardCharsets.US_ASCII));
        md5.update((byte) 0);
        return md5.digest();
    }


    @Override
    public boolean supportsIntegrity () {
        return true;
    }

        dstIndex += 4;
        SMBUtil.writeInt4(this.createOptions, dst, dstIndex);
        dstIndex += 4;

        int nameOffsetOffset = dstIndex;
        byte[] nameBytes = this.name.getBytes(StandardCharsets.UTF_16LE);
        SMBUtil.writeInt2(nameBytes.length, dst, dstIndex + 2);
        dstIndex += 4;

        int createContextOffsetOffset = dstIndex;
        dstIndex += 4; // createContextOffset

            disallow.add(st.nextToken().trim());
        }
        this.disallowCompound = disallow;
    }


    protected void initDefaults () throws CIFSException {

        try {
            "".getBytes(SmbConstants.DEFAULT_OEM_ENCODING);
        }
        catch ( UnsupportedEncodingException uee ) {
            throw new CIFSException(

            try {
                domain = DEFAULT_DOMAIN.getBytes(UNI_ENCODING);
            } catch (IOException ex) { }
        }
        int domainLength = domain.length;
        byte[] server = new byte[0];
        try {
            String host = NbtAddress.getLocalHost().getHostName();
            if (host != null) {
                try {
                    server = host.getBytes(UNI_ENCODING);
                } catch (IOException ex) { }

                }
                System.arraycopy( str.getBytes( UNI_ENCODING ), 0,
                                    dst, dstIndex, str.length() * 2 );
                dstIndex += str.length() * 2;
                dst[dstIndex++] = (byte)'\0';
                dst[dstIndex++] = (byte)'\0';
            } else {
                byte[] b = str.getBytes( OEM_ENCODING );

        Encdec.enc_doublebe(v, this.tmp, 0);
        write(this.tmp, 0, 8);
    }


    @Override
    public final void writeBytes ( String s ) throws SmbException {
        byte[] b = s.getBytes();
        write(b, 0, b.length);
    }


    @Override
    public final void writeChars ( String s ) throws SmbException {
        int clen = s.length();
        int blen = 2 * clen;