if ( mechanismToken != null ) {
                fields.add(new DERTaggedObject(true, 2, new DEROctetString(mechanismToken)));
            }
            byte[] mechanismListMIC = getMechanismListMIC();
            if ( mechanismListMIC != null ) {
                fields.add(new DERTaggedObject(true, 3, new DEROctetString(mechanismListMIC)));
            }

            ASN1EncodableVector ev = new ASN1EncodableVector();

                    ASN1Integer addressType = ASN1Util.as(ASN1Integer.class, addressSequence, 0);
                    DEROctetString addressOctets = ASN1Util.as(DEROctetString.class, addressSequence, 1);

                    this.userAddresses = new ArrayList<>();
                    if ( addressType.getValue().intValue() == KerberosConstants.AF_INTERNET ) {

            ASN1Integer authType = ASN1Util.as(ASN1Integer.class, ASN1Util.as(ASN1TaggedObject.class, authElement, 0));
            DEROctetString authData = ASN1Util.as(DEROctetString.class, ASN1Util.as(ASN1TaggedObject.class, authElement, 1));

            this.authorizations.addAll(KerberosAuthData.parse(authType.getValue().intValue(), authData.getOctets(), keys));
        }
    }

                ASN1Integer encType = ASN1Util.as(ASN1Integer.class, ASN1Util.as(ASN1TaggedObject.class, encSequence, 0));
                DEROctetString encOctets = ASN1Util.as(DEROctetString.class, ASN1Util.as(ASN1TaggedObject.class, encSequence, 2));
                byte[] crypt = encOctets.getOctets();

                if ( keys == null ) {
                    try {