1using IronPdf;
2using IronPdf.Security;
3
4using var pdf = PdfDocument.FromFile(@"sample.pdf");
5
6pdf.SecuritySettings.UserPassword = @"demo";
7pdf.SecuritySettings.EncryptionType = PdfEncryptionType.Aes_256;
8pdf.SecuritySettings.EncryptMetadata = true;
9pdf.SecuritySettings.AllowUserPrinting = PdfPrintSecurity.FullPrintRights;
10pdf.SecuritySettings.AllowUserEdits = PdfEditSecurity.NoEdit;
11pdf.SecuritySettings.AllowUserCopyPasteContent = false;
12pdf.SecuritySettings.AllowUserAnnotations = false;
13pdf.SecuritySettings.AllowUserFormData = false;
14
15pdf.SaveAs(@"encrypted.pdf");