Atari Founder Proclaims the End of Gaming Piracy
gamesindustry.biz
gamesindustry.biz
I assume they are planning on some sort of online distribution. You give the game publisher your TPM's public key, they encrypt it, and then the game can only be played when your TPM decrypts the game with its built-in private key. But there are tons of trivial attacks on this. For example, write a driver that looks like a TPM, but has a known secret key. One person does this, and the game is pirated.
All in all, this will fail. The TPM was not designed for this purpose.
What's tripping you up is that the vocabulary they use to describe it is rootkits and OS integrity. But it's the same thing for DRM and copy protection. The idea is a chain of trust that runs from the application code all the way to the chipset, or, more simply, that the system can assure itself that it knows what code is running.
If you take away the ability to inject or modify running code, and provide a secure key store, lots of DRM systems become quite difficult to break. By and large, they work by keeping sensitive code encrypted except while it's executing.
I predict a large market in non TPM motherboards.
Even if it was elective --- and again it isn't --- it helps most consumers more than it hurts. Modders are perhaps 1% of the market. Considerably more than 1% of the market wants full disk encryption and two-factor auth to their bank accounts, both things that the TPM offers.
If you look at the amount of effort it took to break the last X360 iteration, or the fact that there's still no public break of Apple FairPlay, you can see where this is going. If it costs $500,000 to break BD+ v1, and Macrovision has v2, v3, v4, and v5 sitting on the shelf, DRM starts to look a little less silly.
[late] Let me reword that: if you can break BD+, you do have something better to do, and you can charge 250-350/hr to do it.