}

        ASN1Sequence sequence;
        try {
            sequence = ASN1Util.as(ASN1Sequence.class, derToken.getBaseObject());
        }
        catch ( IOException e ) {
            throw new PACDecodingException("Malformed kerberos ticket", e);
        }

        Enumeration<?> fields = sequence.getObjects();
        while ( fields.hasMoreElements() ) {

                    throw new IOException( "Invalid UTF-8 sequence" );
                } else {
                    uni[ui] |= (ch & 0x3F) << 6;
                    ch = src[si++] & 0xFF;
                    uni[ui] |=  ch & 0x3F;
                    if ((ch & 0xC0) != 0x80 || uni[ui] < 0x800) {
                        throw new IOException( "Invalid UTF-8 sequence" );
                    }
                }
            } else {

        byte[] seqBytes = new byte[4];
        SMBUtil.writeInt4(seqNum, seqBytes, 0);

        MessageDigest mac = Crypto.getHMACT64(sk);
        mac.update(seqBytes); // sequence
        mac.update(data); // data
        byte[] dgst = mac.digest();
        byte[] trunc = new byte[8];
        System.arraycopy(dgst, 0, trunc, 0, 8);

        if ( log.isDebugEnabled() ) {

        if ( this.gssContext.getReplayDetState() ) {
            contextFlags |= NegTokenInit.REPLAY_DETECTION;
        }
        if ( this.gssContext.getSequenceDetState() ) {
            contextFlags |= NegTokenInit.SEQUENCE_CHECKING;
        }
        if ( this.gssContext.getAnonymityState() ) {
            contextFlags |= NegTokenInit.ANONYMITY;
        }
        if ( this.gssContext.getConfState() ) {

                    throw new IOException("Invalid UTF-8 sequence");
                }
                uni[ ui ] |= ( ch & 0x3F ) << 6;
                ch = src[ si++ ] & 0xFF;
                uni[ ui ] |= ch & 0x3F;
                if ( ( ch & 0xC0 ) != 0x80 || uni[ ui ] < 0x800 ) {
                    throw new IOException("Invalid UTF-8 sequence");
                }
            }
            else {

        int index = offset;
        update(data, index, SmbConstants.SIGNATURE_OFFSET);
        index += SmbConstants.SIGNATURE_OFFSET;
        byte[] sequence = new byte[8];
        SMBUtil.writeInt4(msg.getSignSeq(), sequence, 0);
        update(sequence, 0, sequence.length);
        index += 8;
        if ( msg.getCommand() == ServerMessageBlock.SMB_COM_READ_ANDX ) {
            /*