}


    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;
    }


    @Override

    private static final Logger log = LoggerFactory.getLogger(Strings.class);

    private static final Charset UNI_ENCODING = Charset.forName("UTF-16LE");
    private static final Charset ASCII_ENCODING = Charset.forName("US-ASCII");

    private static final boolean MASK_SECRET_VALUE = System.getProperty("jcifs.maskSecretValue", "true") == "true";
    private static final String SECRET_PATTERN = "^(smb.*:).*(@.*)$";

        int start = bufferIndex;

        pathConsumed = readInt2( buffer, bufferIndex );
        bufferIndex += 2;
            /* Samba 2.2.8a will reply with Unicode paths even though
             * ASCII is negotiated so we must use flags2 (probably
             * should anyway).
             */
        if((flags2 & FLAGS2_UNICODE) != 0) {
            pathConsumed /= 2;
        }

                break;
            case 1:
                /*
                 * Get ASCII hex value and convert to platform dependent
                 * encoding like EBCDIC perhaps
                 */
                b[ 0 ] = (byte) ( Integer.parseInt(str.substring(i, i + 2), 16) & 0xFF );
                out[ j++ ] = ( new String(b, 0, 1, "ASCII") ).charAt(0);
                i++;
                state = 0;
            }
        }

        return 0;
    }
    int writeBytesWireFormat( byte[] dst, int dstIndex ) {
        byte[] dialects;
        try {
            dialects = DIALECTS.getBytes( "ASCII" );
        } catch( UnsupportedEncodingException uee ) {
            return 0;
        }
        System.arraycopy( dialects, 0, dst, dstIndex, dialects.length );
        return dialects.length;
    }

        return 0;
    }
    int writeParametersWireFormat( byte[] dst, int dstIndex ) {
        int start = dstIndex;
        byte[] descr;

        try {
            descr = DESCR.getBytes( "ASCII" );
        } catch( UnsupportedEncodingException uee ) {
            return 0;
        }

        writeInt2( NET_SHARE_ENUM, dst, dstIndex );
        dstIndex += 2;

                log.println("WARNING: The default OEM encoding " + DEFAULT_OEM_ENCODING +
                " does not appear to be supported by this JRE. The default encoding will be US-ASCII.");
            }
            DEFAULT_OEM_ENCODING = "US-ASCII";
        }

        if (log.level >= 4) {
            try {
                prp.store( log, "JCIFS PROPERTIES" );
            } catch( IOException ioe ) {
            }

            dst[ dstIndex++ ] = (byte) 0x00;
        }
        dstIndex += writeString(this.path, dst, dstIndex);
        try {
            System.arraycopy(this.service.getBytes("ASCII"), 0, dst, dstIndex, this.service.length());
        }
        catch ( UnsupportedEncodingException uee ) {
            return 0;
        }
        dstIndex += this.service.length();

                if (ntlm == null) return;
            } else {
                String auth = new String(Base64.decode(msg.substring(6)),
                        "US-ASCII");
                int index = auth.indexOf(':');
                String user = (index != -1) ? auth.substring(0, index) : auth;
                String password = (index != -1) ? auth.substring(index + 1) :

                    return;
                }
            }
            else { /* Basic */
                String auth = new String(Base64.decode(msg.substring(6)), "US-ASCII");
                int index = auth.indexOf(':');
                String user = ( index != -1 ) ? auth.substring(0, index) : auth;
                String password = ( index != -1 ) ? auth.substring(index + 1) : "";