Macrovision Buys Broken Blu-ray DRM Tech for $45 Million

Illustration for article titled Macrovision Buys Broken Blu-ray DRM Tech for $45 Million

While both Blu-ray and HD DVD use the long-cracked AACS copy protection scheme, Blu-ray has its unique flavor of DRM underneath that, BD+, which is based on the Self-Protecting Digital Content spec. Macrovision is plunking down $45 million for SPDC and its related patents. This is despite the fact BD+ was cracked by AnyDVD's daddy, Slysoft, a couple weeks ago. So why drop that much dough on cracked tech?


Licensing. Even if the formerly uncrackable scheme has been busted wide open, Macrovision is looking at piles of revenue from licenses paid by studios to use BD+. It'll then go about playing the never-ending copy-protection cat-and-mouse game with crackers and hackers. It's comforting to know some things never change. [Ars]


@phijef: It seems to me that if that were true then there would need to be an update to the Bluray Player every time there was a new Bluray release and in a couple of years the huge list of encryption keys stored on the machine would be way bigger than anything other than a PS3 could hold.

Also, they can't change the encryption key for old releases. The movie is already encrypted with an encryption key. Once its encrypted and burnt, you can't re-encrypt it with a different key without burning a new disc.

The way HD-DVD changed the key is that all HD-DVDs that came out from then on had a new HD-DVD, but all the old movies still had the old encryption key.

At least, this is how I understand it.