* Reason being as indicated by ReasonFlags, i.e. ReasonFlags.keyCompromise
     * or 0 if ReasonFlags are not to be used
     **/
    public void addCRLEntry(BigInteger userCertificate, Date revocationDate, int reason)
    {
        tbsGen.addCRLEntry(new DERInteger(userCertificate), new Time(revocationDate), reason);
    }