/ First published in 2008 — Please see 2011 update here /
Decrypt Adobe ADEPT-encrypted PDF files, AKA Digital Editions
I recently bought an Adobe Digital Edition of a decent book titled “Mastering CSS with Dreamweaver CS4” from Peachpit (if you decide to buy something there, do not forget to register—you will get a good instant discount as a member).
The book is fine, but I hate this DRM stuff as I need to access my books sometimes on a casual machine and that is impossible unless you install Adobe™ Digital Editions and activate it via Adobe’s DRM Activator site (for some reason it is called “Eden”, there is no sign of Eden there at all!). So I decided to find a way to overcome and remove DRM protection from Adobe pdf file, not for sharing this book, but for my convenience.
After an extended search, I found a way, and everybody can repeat the same sequence. So far, this protection (ADEPT encryption) was considered to be officially unbreakable, but it seems not anymore.