pdfinfo does it.
On Tuesday, April 25, 2017 at 1:29:22 PM UTC-7, Ben wrote: > > Thank you for yor help. Seems I need to study the code a bit. > > The weird thing is: The PDF doesn't ask for a password.( I think it was > downloaded somewhere ) I can open it and I could convert it by printing it > through a PDF to file printer to get rid of the encryption. > I will deploy Mayan some day in a law firm, I 'm working for for several > years. They don't create any password protected PDFs there but get a lot > PDFs by mail. > So I definitely need some way to detect encrypted PDF. > pdfinfo will do it, so if you need to 'detect' it(from a terminal), you can do "pdfinfo | grep 'Encrypted' " Also, like I said, pdftk will strip out the encryption(and DRM-restrictions) easily. As far as being able to open it/print it: Firefox's built in PDF viewer ignores all restrictions. Other browsers and clients tend to follow the DRM restrictions - Chrome, Internet Explorer, Edge, Adobe, SumatraPDF etc. A few - Okular on KDE/Linux, for instance - have an option in the settings as to whether to ignore the restrictions or not. If a user password is set, it actually encrypts the file and prevents access without it. If a user password is *not* set, the restrictions that can be set involve copying or printing... and it depends on whether or not the client 'follows' the restrictions. -- --- You received this message because you are subscribed to the Google Groups "Mayan EDMS" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
