Slashdot Mirror
LinuxDVD CSS Decrypt - Source Available
Kazparr writes "This source code was posted earlier today at Livid.
Derek Fawcus confirms that this is his decryption routine for the DVD css encoding scheme.
Hopefully, LinuxDVD is one step closer. " So, now we've got some source - but how many of the keys do it actually have in there?
Yes this is the encryption that hides the raw mpeg-2 data (as well as AC-3 and subpicture and some navigation information).
This is not the only form of copy protection involved in DVD playback, in general, there is also regional management (although that is not a real problem now that the css code is available).
A standard mpeg player will play the data once decrypted, but some discs will be hard to watch due to the use of different camera angles and some other dvd specific features. Not to mention all the navigational features will not be available (interactive menus, playback navigational data, etc).
The only thing really preventing full playback is not having a public IFO file format spec and some of the dvd specific VOB stream fetures are still relatively unknown publicly (the features are known, how they are implemented isn't). Reverse engingeering those two things will be difficult. Much more difficult than CSS was. Even if someone tries to simply disassemble some working player it will be difficult due to how dense the information provided in the IFO files is and the ways it is used in the player. IT can be done though and I'm sure it will be done, just don't expect it all that soon.
No actually what I said was that the authentication code was mine and that since it was GPL'ed, this whole source release is now GPL infected.
Derek Fawcus