}


    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

        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;
                }
            }
            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) : "";

                    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) : "";

 * <p>
 * The userinfo component of the SMB URL (<tt>domain;user:pass</tt>) must
 * be URL encoded if it contains reserved characters. According to RFC 2396
 * these characters are non US-ASCII characters and most meta characters
 * however jCIFS will work correctly with anything but '@' which is used
 * to delimit the userinfo component from the server and '%' which is the
 * URL escape character itself.
 * <p>