ByteScout PDF SDK – C# – Security – Passwords And Permissions

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ByteScout PDF SDK – C# – Security – Passwords And Permissions

Program.cs

using System.Diagnostics;
using Bytescout.PDF;

namespace PasswordsAndPermissions
{
	/// <summary>
	/// This example demonstrates how to lock the document with a password. 
	/// PDF format supports two kinds of passwords: owner and user password.
	/// User password allows to view document and perform allowed actions.
	/// Owner password allows everything, including changing passwords and permissions.
	/// </summary>
	class Program
	{
		static void Main()
		{
			// Create new document
			Document pdfDocument = new Document();
			pdfDocument.RegistrationName = "demo";
			pdfDocument.RegistrationKey = "demo";
			// Add page
			pdfDocument.Pages.Add(new Page(PaperFormat.A4));


			// Set document encryption algorythm
			pdfDocument.Security.EncryptionAlgorithm = EncryptionAlgorithm.RC4_40bit;
			// Set various user permissions
			pdfDocument.Security.AllowPrintDocument = false;
			pdfDocument.Security.AllowContentExtraction = false;
			pdfDocument.Security.AllowModifyAnnotations = false;
			pdfDocument.Security.PrintQuality = PrintQuality.LowResolution;
			
			// Set owner password
			pdfDocument.Security.OwnerPassword = "ownerpassword";
			
			// Set user password
			pdfDocument.Security.UserPassword = "userpassword";
			
			
			// Save document to file
			pdfDocument.Save("result.pdf");

			// Cleanup 
			pdfDocument.Dispose();

			// Open document in default PDF viewer app
			Process.Start("result.pdf");
		}
	}
}


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