908771_ug: volume 3 UG documentations revamped samples.

Digital Signature/Create-LTV-when-signing-PDF-documents-externally/.NET/Create-LTV-when-signing-PDF-documents-externally/Program.cs

@@ -13,14 +13,9 @@
 //Load an existing PDF document.
 PdfLoadedDocument loadedDocument = new PdfLoadedDocument(documentStream);
 
-//Get the page of the existing PDF document.
-PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
-
-//Create a new PDF signature without PdfCertificate instance.
-PdfSignature signature = new PdfSignature(loadedDocument, loadedPage, null, "Signature1");
-
-//Hook up the ComputeHash event.
-signature.ComputeHash += Signature_ComputeHash;
+//Gets the first signature field of the PDF document
+PdfLoadedSignatureField signatureField = loadedDocument.Form.Fields[0] as PdfLoadedSignatureField;
+PdfSignature signature = signatureField.Signature;
 
 //Create X509Certificate2 from your certificate to create a long-term validity.
 X509Certificate2 x509 = new X509Certificate2(Path.GetFullPath(@"Data/PDF.pfx"), "syncfusion");
@@ -37,23 +32,3 @@
 
 //Close the document.
 loadedDocument.Close(true);
-
-void Signature_ComputeHash(object sender, PdfSignatureEventArgs ars)
-{
-    //Get the document bytes
-    byte[] documentBytes = ars.Data;
-
-    SignedCms signedCms = new SignedCms(new ContentInfo(documentBytes), detached: true);
-
-    //Compute the signature using the specified digital ID file and the password
-    X509Certificate2 certificate = new X509Certificate2(Path.GetFullPath(@"Data/PDF.pfx"), "syncfusion");
-    CmsSigner cmsSigner = new CmsSigner(certificate);
-
-    //Set the digest algorithm SHA256
-    cmsSigner.DigestAlgorithm = new Oid("2.16.840.1.101.3.4.2.1");
-
-    signedCms.ComputeSignature(cmsSigner);
-
-    //Embed the encoded digital signature to the PDF document
-    ars.SignedData = signedCms.Encode();
-}

Digital Signature/Enable-LTV-PDF-signature/.NET/Enable-LTV-PDF-signature/Enable-LTV-PDF-signature.csproj

@@ -13,10 +13,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <None Update="Data\PDF.pfx">
-      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
-    </None>
-    <None Update="Data\syncfusion_logo.png">
+    <None Update="Data\Input.pdf">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
     </None>
     <None Update="Output\.gitkeep">

Digital Signature/Enable-LTV-PDF-signature/.NET/Enable-LTV-PDF-signature/Program.cs

@@ -1,57 +1,26 @@
 // See https://aka.ms/new-console-template for more information
 
-using Syncfusion.Drawing;
-using Syncfusion.Pdf;
-using Syncfusion.Pdf.Graphics;
+using Syncfusion.Pdf.Parsing;
 using Syncfusion.Pdf.Security;
 
-//Creates a new PDF document.
-PdfDocument document = new PdfDocument();
-
-//Adds a new page.
-PdfPageBase page = document.Pages.Add();
-
-//Create graphics for the page. 
-PdfGraphics graphics = page.Graphics;
-
-//Creates a certificate instance from PFX file with private key.
-FileStream certificateStream = new FileStream(Path.GetFullPath(@"Data/PDF.pfx"), FileMode.Open, FileAccess.Read);
-PdfCertificate pdfCert = new PdfCertificate(certificateStream, "DigitalPass123");
-
-//Creates a digital signature.
-PdfSignature signature = new PdfSignature(document, page, pdfCert, "Signature");
-signature.Settings.CryptographicStandard = CryptographicStandard.CADES;
-signature.Settings.DigestAlgorithm = DigestAlgorithm.SHA256;
-
-
-//Sets an image for signature field.
-FileStream imageStream = new FileStream(Path.GetFullPath(@"Data/syncfusion_logo.png"), FileMode.Open, FileAccess.Read);
-
-//Sets an image for signature field.
-PdfBitmap image = new PdfBitmap(imageStream);
-
-//Adds time stamp by using the server URI and credentials.
-signature.TimeStampServer = new TimeStampServer(new Uri("http://time.certum.pl/ "));
+//Get the stream from the document.
+FileStream documentStream = new FileStream(Path.GetFullPath(@"Data/Input.pdf"), FileMode.Open, FileAccess.Read);
+//Load an existing PDF document.
+PdfLoadedDocument loadedDocument = new PdfLoadedDocument(documentStream);
+//Gets the first signature field of the PDF document
+PdfLoadedSignatureField signatureField = loadedDocument.Form.Fields[0] as PdfLoadedSignatureField;
+PdfSignature signature = signatureField.Signature;
 
 //Enable LTV on Signature.
 signature.EnableLtv = true;
 
-//Sets signature info.
-signature.Bounds = new RectangleF(new PointF(0, 0), image.PhysicalDimension);
-signature.ContactInfo = "[email protected]";
-signature.LocationInfo = "Honolulu, Hawaii";
-signature.Reason = "I am author of this document.";
-
-//Draws the signature image.
-signature.Appearance.Normal.Graphics.DrawImage(image, 0, 0);
-
 //Create file stream.
 using (FileStream outputFileStream = new FileStream(Path.GetFullPath(@"Output/Output.pdf"), FileMode.Create, FileAccess.ReadWrite))
 {
     //Save the PDF document to file stream.
-    document.Save(outputFileStream);
+    loadedDocument.Save(outputFileStream);
 }
 
 //Close the document.
-document.Close(true);
+loadedDocument.Close(true);