Lock so it is not editable in Acrobat?

[dmcdonaldak]

Describe the bug
Is there a way to lock this certificate so it is not editable in Acrobat?

Moodle Version(s)
The moodle version (Moodle 3.7)

To Reproduce
Download and open in Acrobat

Expected behavior
Is there a way to add password protection?

Desktop (please complete the following information):

• OS: Windows 10
• Browser: not browser related, same in all browsers.

[bozoh]

last time i check (long time ago) this functionality in the pdflib which this plugin uses was not possible

[ShellyMcCollum]

Wondered if there was any updates on this capability, as this has become an issue for a couple of our clients. Thanks!

[shediac2]

Add the line -
$pdf->SetProtection(array('modify'));

In locallib.php - around line 954 - this makes it a bit harder to edit the pdf