Alan Cox Files Patent For DRM

booooh writes "Alan Cox has filed a patent for DRM (Digital Rights Management). From the filing: 'A rights management system monitors and controls use of a computer program to prevent use that is not in compliance with acceptable terms.' According to the patent pledge of Cox's employer Red Hat, they will not license this technology if the patent is granted. And it can probably be applied to the DRM that is in Vista. This forum has a few more details.

Comments

Wow!

[noamsml]

Either the patent system will be proven rotten, or DRM will be halted! It's a win-win!

Hope this works

[AlanS2002]

It might be something that reduces the threat of DRM completely making our computers useless.

Flamebait??

[Cheesey]

Flamebait? "The threat of DRM completely making our computers useless" is not a contraversial statement. Even if you really like DRM, you can probably think of some examples where it has been taken too far: think Sony rootkits, Starforce CDROM damage, and Jon Johansen and Dimitri Skylarov being arrested for hacking their own computers.

Read up on TCPA immediately. Consider how much of the design of Vista has been aimed at preventing access to high-quality copies of information protected by DRM. Should the film industry really have been allowed to design an operating system?

Mr. Cox, you are brilliant

[ratboy666]

The current attack vectors on cryptographic based "DRM" schemes are (1) accidental key leakage, (2) the key exchange system or (3) the fact that the data must be eventually decoded.

Note that (3) is what makes DRM systems very dumb. It also follows that the Operating System must get involved in order to so hide the data.

If the Operating System allows a debugger to run AT THE SAME TIME as the "DRM", its attackable. If the OS allows "unsigned" drivers to run, its attackable.

The OS (for example, Vista) will (eventually) not allow unsigned drivers. It must also "kick out" or "suspend" all non-DRM (unsigned) software when DRM content is played.

This behaviour falls into Mr. Coxs patent.

Now, if (Vista) doesn't implement the scheme, it remains vulnerable. So, the problem must be solved another way.

My suggestion then is to ALSO patent (or disallow) by widely publishing the idea that a hypervisor (VM supervisor) can be used for DRM control as well, and can also be used to suspend, terminate or otherwise control applications that could be used to attack DRM software.

Got that? It's now published.