iTextSharp.text.pdf.security.MakeXmlSignature.SignXadesBes C# (CSharp) Метод

        public static void SignXadesBes(XmlSignatureAppearance sap, IExternalSignature externalSignature, X509Certificate[] chain) {

            VerifyArguments(sap, externalSignature);
            String contentReferenceId = SecurityConstants.Reference_ + GetRandomId();
            String signedPropertiesId = SecurityConstants.SignedProperties_ + GetRandomId();
            String signatureId = SecurityConstants.Signature_ + GetRandomId();

            XmlDocument doc = sap.GetXmlLocator().GetDocument();
            KeyInfoClause keyInfo = GenerateKeyInfo(chain, sap);
            List<XmlElement> references = new List<XmlElement>(2);
            
            XmlElement signature = GenerateSignatureElement(sap.GetXmlLocator(), signatureId, true);
            XmlElement signedProperty;
            XmlElement dsObject = GenerateXadesBesObject(sap, signatureId, contentReferenceId, signedPropertiesId, out signedProperty);
            
            references.Add(GenerateCustomReference(doc, signedProperty, "#" + signedPropertiesId, SecurityConstants.SignedProperties_Type, null));
            references.Add(GenerateContentReference(doc, sap, contentReferenceId));

            Sign(signature, sap.GetXmlLocator(), externalSignature, references, dsObject, keyInfo);

            sap.Close();
        }