Hi,
I have applied password protection for PDF file using Aspose.PDF V8.2.0.0. The password protection is working fine in my PC but when I open the same PDF using any mobile, the PDF file is not prompting for user password. See below code snippet which I used to apply password protection.
Aspose.Pdf.Facades.PdfFileSecurity PDFFileSecurity = new PdfFileSecurity(tempstrFullFilePath, strFullFilePath);
DocumentPrivilege documentPrivilege = DocumentPrivilege.ForbidAll;
// Only allow screen reading
documentPrivilege.AllowModifyContents = true;
documentPrivilege.AllowPrint = true;
documentPrivilege.AllowModifyAnnotations = true;
PDFFileSecurity.EncryptFile("password", "", documentPrivilege, KeySize.x128, Algorithm.RC4);
Please let me know if I am missing anything to include.
I have attached the sample PDF and the password is "pwcwelcome1"
Regards,
Vijay