PDF DRM
Current time: 06-20-2018, 04:34 PM
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Author: shaker
Last Post: andersen3
Replies 3
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PDF DRM
#1
PDF DRM

Moderators: Please take this down if you so desire.

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Every three years, the Library of Congress has the thankless task of listening to people complain about the Digital Millennium Copyright Act. The DMCA forbade most attempts to bypass the digital locks on things like DVDs, music, and computer software, but it also gave the Library the ability to wave its magical copyright wand and make certain DRM cracks legal for three years at a time.

This time, the Library went (comparatively) nuts, allowing widespread bypassing of the CSS encryption on DVDs, declaring iPhone jailbreaking to be "fair use," and letting consumers crack their legally purchased e-books in order to have them read aloud by computers.


For those of you who are ambitious drm can be removed from your legally purchased and highly secured pdf files.
The following websites are good places to start looking into this idea.

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From the tetrachroma FAQ's you need:

1) Python 2.7 from:

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2) PyCrypto from:

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3) PyWin Extension (Win32API module) from:

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The final thing you need is ineptpdf 8.4.22 (which I find works for Fileopen PDF Security)
Search for it using google, or go here:

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Read the directions, save as ineptpdf8.4.22.pyw, then double click on the new file...
Leave Key file empty (for Fileopen), choose the secured file, choose a new name for the unsecured file, click decrypt.

[Image: ineptpdf84.png?w=300&h=147]

There are many other scripts out there too that will help with other types of e-books and such.
You'll have to search for them yourself though...

Run the script and it works like a charm.
Good luck folks!
[-] The following 2 users say Thank You to shaker for this post:
  • Sumatra, Visitante
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#2
EDIT: The above procedure will only work if the Fileopen secured pdf file was purchased, opened, and used on the same computer. The key is in that one computer, which accesses the internet, and tells a server somewhere that your computer is authorized to open that particular file. And this happens before you're allowed to open the file. Therefore, you cannot transfer a secured pdf file to another computer and use this procedure. It must be openable in order to work.

It is also much different than the Passware Kit, which opens password protected pdf files... among other things.

I thought this was quite useful to have a portable pdf file, which at one time was only working with that one computer and an internet connection... and now they are free of drm.
[-] The following 4 users say Thank You to shaker for this post:
  • unix0123, oanm2000, Sumatra, Visitante
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#3
The key is not on the computer. It comes from the server. If you can open the fileopen pdf with adobe (reader) on your computer the script might work fine. The script must be used on the same computer because the plugin checks the hardware.
[-] The following 3 users say Thank You to tetrachroma for this post:
  • unix0123, oanm2000, Sumatra
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#4
for removing the protection read
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and
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[-] The following 4 users say Thank You to andersen3 for this post:
  • Dell_Brett, jcbv, zrilek, Visitante
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