Great!
Quote:
Originally Posted by arnezami
Advanced AACS Topics
This is about the value of the Processing now and in the future. There are ways the AACS LA can issue MKBs in such a way that each disc/movie will have to use a different Processing key thus making a Processing Key in the future much less valueable. However this is really an advanced topic which requires a thourough analysis of what can and can't be done. Its very interesting in itself.
There is also some doubt why the AACS LA hasn't used this techinque. Its possible there was too little time for them to do this properly, or they simply don't understand it themselves. Either way they screwed up by not making use of it in the first place and are not even willing to admit it (when looking at the last "press release").
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I think using a different Processing Key per movie is not a good idea for them. Now they have to revoke just one Processing Key, but firts they need to close the hole. They have "lost" just one Processing Key per hole. If they use 150 keys (one per movie), they will lose 150 keys per hole. In the future tens of thousand of movies will be released, they would be losing tens of thousand of PKs per newly discovered hole.
A player has only 253 Device Keys. Sure, there are lots of posible PKs and DKs, but it is a limited resource anyway. Already-sold home players must work with any future released movie no matter how many revokations they do. If they don't achieve this goal, the whole revocation system becomes broken.