Pdf |
The user password will be required to open an encrypted PDF document for viewing. The permissions specified in Permissions will be enforced by the reader software.
The user password can be null or empty string, in this case no password will be required from the user when opening the PDF document. The user password cannot be the same as the owner password.
See Developer Guide: Create and secure a PDF document by password
using System; using SautinSoft.Document; using SautinSoft.Document.Drawing; using System.IO; using System.Linq; namespace Example { class Program { static void Main(string[] args) { // Get your free 100-day key here: // https://sautinsoft.com/start-for-free/ SecureDocument(); } /// <summary> /// Create and secure a PDF document by password. Also set the permissions for the document. /// </summary> /// <remarks> /// Details: https://www.sautinsoft.com/products/document/help/net/developer-guide/security-options-net-csharp-vb.php /// </remarks> public static void SecureDocument() { string filePath = @"ProtectedDocument.pdf"; DocumentCore dc = new DocumentCore(); // Let's create a simple document. dc.Content.End.Insert("Hello World!!!", new CharacterFormat() { FontName = "Verdana", Size = 65.5f, FontColor = Color.Orange }); PdfSaveOptions so = new PdfSaveOptions(); // Password Protection so.EncryptionDetails.UserPassword = "12345"; // EncryptionAlgorithm so.EncryptionDetails.EncryptionAlgorithm = PdfEncryptionAlgorithm.RC4_128; //Permissions: Content Copying, Commenting, Printing, Changing the Document, filing of form fildes etc //Printing: Allowed so.EncryptionDetails.Permissions = PdfPermissions.Printing; // Save a document as the PDF file with Security Options. dc.Save(filePath, so); // Open the result for demonstration purposes. System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo(filePath) { UseShellExecute = true }); } } }
Imports System Imports System.IO Imports SautinSoft.Document Module Sample Sub Main() SecureDocument() End Sub ''' Get your free 100-day key here: ''' https://sautinsoft.com/start-for-free/ ''' <summary> ''' Create and secure a PDF document by password. Also set the permissions for the document. ''' </summary> ''' <remarks> ''' Details: https://www.sautinsoft.com/products/document/help/net/developer-guide/security-options-net-csharp-vb.php ''' </remarks> Sub SecureDocument() Dim filePath As String = "ProtectedDocument.pdf" Dim dc As New DocumentCore() ' Let's create a simple document. dc.Content.End.Insert("Hello World!!!", New CharacterFormat() With { .FontName = "Verdana", .Size = 65.5F, .FontColor = Color.Orange }) Dim so As New PdfSaveOptions() ' Password Protection so.EncryptionDetails.UserPassword = "12345" ' EncryptionAlgorithm so.EncryptionDetails.EncryptionAlgorithm = PdfEncryptionAlgorithm.RC4_128 'Permissions: Content Copying, Commenting, Printing, Changing the Document, filing of form fildes etc 'Printing: Allowed so.EncryptionDetails.Permissions = PdfPermissions.Printing ' Save a document as the PDF file with Security Options. dc.Save(filePath, so) ' Open the result for demonstration purposes. System.Diagnostics.Process.Start(New System.Diagnostics.ProcessStartInfo(filePath) With {.UseShellExecute = True}) End Sub End Module