private ArrayList<InetAddress> userAddresses;
    private List<KerberosAuthData> userAuthorizations;


    public KerberosEncData ( byte[] token, Map<Integer, KerberosKey> keys ) throws PACDecodingException {
        ASN1InputStream stream = new ASN1InputStream(new ByteArrayInputStream(token));
        ASN1TaggedObject derToken;
        try {
            derToken = ASN1Util.as(ASN1TaggedObject.class, stream);