We are trying to protect pdf documents that previously was signed using Aspose.Pdf.Facades.PdfFileSecurity:
var privilege = Aspose.Pdf.Facades.DocumentPrivilege.ScreenReaders;
var fileSecurity = new Aspose.Pdf.Facades.PdfFileSecurity();
When we convert signed file 2434_Input.pdf (81.4 KB) to pdf format - signature becomes invalid (2435_Output_pdf.pdf (79.4 KB)).
When we convert this file to pdfa format - signature replaced with single text (2435Output_pdfa.pdf (79.2 KB)).
Are there any technical reasons for this difference?
Whether the same behavior as for pdfa can be implemented for pdf?