iTextSharp.text.pdf.security.LtvVerification.UpdateDss C# (CSharp) Метод

        private void UpdateDss()
        {
            PdfDictionary catalog = reader.Catalog;
            stp.MarkUsed(catalog);
            PdfDictionary dss = catalog.GetAsDict(PdfName.DSS);
            PdfArray ocsps = dss.GetAsArray(PdfName.OCSPS);
            PdfArray crls = dss.GetAsArray(PdfName.CRLS);
            PdfArray certs = dss.GetAsArray(PdfName.CERTS);
            dss.Remove(PdfName.OCSPS);
            dss.Remove(PdfName.CRLS);
            dss.Remove(PdfName.CERTS);
            PdfDictionary vrim = dss.GetAsDict(PdfName.VRI);
            //delete old validations
            if (vrim != null) {
                foreach (PdfName n in vrim.Keys) {
                    if (validated.ContainsKey(n)) {
                        PdfDictionary vri = vrim.GetAsDict(n);
                        if (vri != null) {
                            DeleteOldReferences(ocsps, vri.GetAsArray(PdfName.OCSP));
                            DeleteOldReferences(crls, vri.GetAsArray(PdfName.CRL));
                            DeleteOldReferences(certs, vri.GetAsArray(PdfName.CERT));
                        }
                    }
                }
            }
            if (ocsps == null)
                ocsps = new PdfArray();
            if (crls == null)
                crls = new PdfArray();
            if (certs == null)
                certs = new PdfArray();
            OutputDss(dss, vrim, ocsps, crls, certs);
        }