public static void Run()
{
// ExStart:SetPrivileges
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_AsposePdf_SecuritySignatures();
// Load a source PDF file
using (Document document = new Document(dataDir + "input.pdf"))
{
// Instantiate Document Privileges object
// Apply restrictions on all privileges
DocumentPrivilege documentPrivilege = DocumentPrivilege.ForbidAll;
// Only allow screen reading
documentPrivilege.AllowScreenReaders = true;
// Encrypt the file with User and Owner password.
// Need to set the password, so that once the user views the file with user password,
// Only screen reading option is enabled
document.Encrypt("user", "owner", documentPrivilege, CryptoAlgorithm.AESx128, false);
// Save updated document
document.Save(dataDir + "SetPrivileges_out.pdf");
}
// ExEnd:SetPrivileges
}
}
