ASN1EncodableVector v = new ASN1EncodableVector();
        // pvno [0] INTEGER 5
        v.add(new DERTaggedObject(true, 0, new ASN1Integer(Integer.parseInt(KerberosConstants.KERBEROS_VERSION))));
        // msg-type [1] INTEGER 14 (AP-REQ)
        v.add(new DERTaggedObject(true, 1, new ASN1Integer(Integer.parseInt(KerberosConstants.KERBEROS_AP_REQ))));
        // ap-options [2] BIT STRING

        principalVector.add(new DERTaggedObject(true, 0, new ASN1Integer(1))); // name-type
        principalVector.add(new DERTaggedObject(true, 1, new DERSequence(principalNameVector)));
        v.add(new DERTaggedObject(true, 2, new DERSequence(principalVector)));

        ASN1EncodableVector encPart = new ASN1EncodableVector();
        encPart.add(new DERTaggedObject(true, 0, new ASN1Integer(encType)));

                while (adresses.hasMoreElements()) {
                    ASN1Sequence addressSequence = ASN1Util.as(ASN1Sequence.class, adresses);
                    ASN1Integer addressType = ASN1Util.as(ASN1Integer.class, addressSequence, 0);
                    DEROctetString addressOctets = ASN1Util.as(DEROctetString.class, addressSequence, 1);

                    this.userAddresses = new ArrayList<>();