PDF - How to make copy protection?

Question

DRM

At work, you need to make the pdf copy-protected,
there is an original pdf, it can be used as a source for creation
, that is, the main criteria are:
1) Unique pdf for each user, so that just in case you can track if #2 does not work
2) Copy protection for each user, that is, the user can only read
3) Generation #1 and #2 on the server

Essentially DRM, I tried to find information on the net but found only software from adobe costing 6.5K, which is a lot.
Thanks in advance

Answer 1

www.sfcontent.ru/

Answer 2

Nothing will stop me from copying, recognizing, just filling in your textual information from scratch, do not toil and find a more adequate solution.

Answer 3

OpenOffice and LibreOffice seem to have the ability to import PDF and then save it later with all possible security and encryption options. You can also do the following - print the original PDF to the novaPDF virtual printer or any other that also supports protection and encryption.

Answer 4

text to bitmap => pdf?

Answer 5

www.adobe.com/products/acrobatpro/features.html#categorylens_featureset_5
Passwords and permissions
Use passwords to help control access to your PDF documents. Apply permissions to restrict printing, copying, or altering. Save passwords and permissions as security policies that can be easily applied to new PDF files.
It sucks how they looked.

Answer 6

If there is no generation on the server, then you can use Truscont protection - disks and flash drives with copy protection.
TrusCont Enhanced DVD-R
TrusCont Secure Flash Drive
Files are encrypted with a unique code on the media, the protection manager (must be launched first) decrypts them directly in Acrobat/Foxit, while blocking copy/paste resaving, printing, etc.