public void CreateAndReadPasswordProtectedPdf(PdfDocumentSecurityLevel securityLevel, string password)
{
var document = new PdfDocument();
var pageNewRenderer = document.AddPage();
var renderer = XGraphics.FromPdfPage(pageNewRenderer);
renderer.DrawString("Test Test Test", new XFont("Arial", 12), XBrushes.Black, new XPoint(12, 12));
document.SecuritySettings.DocumentSecurityLevel = securityLevel;
document.SecuritySettings.UserPassword = password;
using var ms = new MemoryStream();
document.Save(ms);
ms.Position = 0;
var loadDocument = Pdf.IO.PdfReader.Open(ms, PdfDocumentOpenMode.Modify,
delegate(PdfPasswordProviderArgs args) { args.Password = password; });
loadDocument.PageCount.Should().Be(1);
}
public static void Test()
{
// Get a fresh copy of the sample PDF file.
// The passwords are 'user' and 'owner' in this sample.
const string filenameSource = "HelloWorld (protected).pdf";
const string filenameDest = "HelloWorld_tempfile.pdf";
System.IO.File.Copy(System.IO.Path.Combine("../../../../../PDFs/", filenameSource),
System.IO.Path.Combine(System.IO.Directory.GetCurrentDirectory(), filenameDest), true);
PdfDocument document;
// Opening a document will fail with an invalid password.
try
{
document = PdfSharp.Pdf.IO.PdfReader.Open(filenameDest, "invalid password");
}
catch (System.Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
}
// You can specifiy a delegate, which is called if the document needs a
// password. If you want to modify the document, you must provide the
// owner password.
document = PdfReader.Open(filenameDest, PdfDocumentOpenMode.Modify, PasswordProvider);
// Open the document with the user password.
document = PdfReader.Open(filenameDest, "user", PdfDocumentOpenMode.ReadOnly);
// Use the property HasOwnerPermissions to decide whether the used password
// was the user or the owner password. In both cases PDFsharp provides full
// access to the PDF document. It is up to the programmer who uses PDFsharp
// to honor the access rights. PDFsharp doesn't try to protect the document
// because this make little sence for an open source library.
bool hasOwnerAccess = document.SecuritySettings.HasOwnerPermissions;
// Open the document with the owner password.
document = PdfReader.Open(filenameDest, "owner");
hasOwnerAccess = document.SecuritySettings.HasOwnerPermissions;
// A document opened with the owner password is completely unprotected
// and can be modified.
XGraphics gfx = XGraphics.FromPdfPage(document.Pages[0]);
gfx.DrawString("Some text...",
new XFont("Times New Roman", 12), XBrushes.Firebrick, 50, 100);
// The modified document is saved without any protection applied.
PdfDocumentSecurityLevel level = document.SecuritySettings.DocumentSecurityLevel;
// If you want to save it protected, you must set the DocumentSecurityLevel
// or apply new passwords.
// In the current implementation the old passwords are not automatically
// reused. See 'ProtectDocument' sample for further information.
// Save the document...
document.Save(filenameDest);
// ...and start a viewer.
System.Diagnostics.Process.Start(filenameDest);
}
