private SignedDocumentInfo CollectInfo(String documentPath) { SignedDocumentInfo docInfo = new SignedDocumentInfo(); PdfDocument pdfDoc = new PdfDocument(new PdfReader(documentPath)); PdfAcroForm form = PdfAcroForm.GetAcroForm(pdfDoc, false); SignatureUtil signUtil = new SignatureUtil(pdfDoc); IList <String> names = signUtil.GetSignatureNames(); docInfo.SetNumberOfTotalRevisions(signUtil.GetTotalRevisions()); SignaturePermissions perms = null; IList <SignatureInfo> signInfos = new List <SignatureInfo>(); foreach (String name in names) { SignatureInfo sigInfo = new SignatureInfo(); sigInfo.SetSignatureName(name); sigInfo.SetRevisionNumber(signUtil.GetRevision(name)); sigInfo.SetSignatureCoversWholeDocument(signUtil.SignatureCoversWholeDocument(name)); IList <PdfWidgetAnnotation> widgetAnnotationsList = form.GetField(name).GetWidgets(); if (widgetAnnotationsList != null && widgetAnnotationsList.Count > 0) { sigInfo.SetSignaturePosition(widgetAnnotationsList[0].GetRectangle().ToRectangle()); } PdfPKCS7 pkcs7 = signUtil.ReadSignatureData(name); sigInfo.SetDigestAlgorithm(pkcs7.GetHashAlgorithm()); sigInfo.SetEncryptionAlgorithm(pkcs7.GetEncryptionAlgorithm()); PdfName filterSubtype = pkcs7.GetFilterSubtype(); if (filterSubtype != null) { sigInfo.SetFilterSubtype(filterSubtype.ToString()); } X509Certificate signCert = pkcs7.GetSigningCertificate(); sigInfo.SetSignerName(iText.Signatures.CertificateInfo.GetSubjectFields(signCert).GetField("CN")); sigInfo.SetAlternativeSignerName(pkcs7.GetSignName()); sigInfo.SetSignDate(pkcs7.GetSignDate().ToUniversalTime()); if (TimestampConstants.UNDEFINED_TIMESTAMP_DATE != pkcs7.GetTimeStampDate()) { sigInfo.SetTimeStamp(pkcs7.GetTimeStampDate().ToUniversalTime()); TimeStampToken ts = pkcs7.GetTimeStampToken(); sigInfo.SetTimeStampService(ts.TimeStampInfo.Tsa.ToString()); } sigInfo.SetLocation(pkcs7.GetLocation()); sigInfo.SetReason(pkcs7.GetReason()); PdfDictionary sigDict = signUtil.GetSignatureDictionary(name); PdfString contactInfo = sigDict.GetAsString(PdfName.ContactInfo); if (contactInfo != null) { sigInfo.SetContactInfo(contactInfo.ToString()); } perms = new SignaturePermissions(sigDict, perms); sigInfo.SetIsCertifiaction(perms.IsCertification()); sigInfo.SetIsFieldsFillAllowed(perms.IsFillInAllowed()); sigInfo.SetIsAddingAnnotationsAllowed(perms.IsAnnotationsAllowed()); IList <String> fieldLocks = new List <String>(); foreach (SignaturePermissions.FieldLock Lock in perms.GetFieldLocks()) { fieldLocks.Add(Lock.ToString()); } sigInfo.SetFieldsLocks(fieldLocks); X509Certificate[] certs = pkcs7.GetSignCertificateChain(); IList <CertificateInfo> certInfos = new List <CertificateInfo>(); for (int i = 0; i < certs.Length; i++) { X509Certificate cert = (X509Certificate)certs[i]; CertificateInfo certInfo = new CertificateInfo(); certInfo.SetIssuer(cert.IssuerDN); certInfo.SetSubject(cert.SubjectDN); certInfo.SetValidFrom(cert.NotBefore); certInfo.SetValidTo(cert.NotAfter); certInfos.Add(certInfo); } sigInfo.SetCertificateInfos(certInfos); signInfos.Add(sigInfo); } docInfo.SetSignatureInfos(signInfos); return(docInfo); }