Netyaroze said:
I have read your link. First ou give a link from wikipedia about the digital rights managment on blurays you quoted a sentence about AACS (which is used on DVDs also) and then to the security archtiecture of the cell ? What has the cell decryption key to do with "Advanced Access Content System". I think they are talking about totally different keys then in the article about Cell security architecture.
AACSThe Advanced Access Content System (AACS) is a standard for content distribution and digital rights management. It was developed by AS Licensing Administrator, LLC (AACS LA), a consortium that includes Disney, Intel, Microsoft, Panasonic, Warner Bros., IBM, Toshiba, andSony. Since appearing in devices in 2006, several successful attacks have been made on the format. The first known attack relied on the trusted clientproblem. In addition, decryption keys have been extracted from a weakly protected player (WinDVD). Since keys can be revoked in newer releases,[86] this is only a temporary attack, and new keys must continually be discovered in order to decrypt the latest discs. This cat-and-mouse game has gone through several cycles.
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The Cell Broadband Engine™ Vault Processor Security Architecture: Hardware security solutions
The unrelenting evolution toward an even more open and connected computing infrastructure requires robust security to thrive. Learn how the Cell Broadband Engine™ processor’s security architecture is uniquely suited for the challenges of this digital future.
= ? Sry I dont understand the connection. Your second article explained how the cell decrypts information. The first thing showed how the Digital rights managment works. But even in your second article wasnt a clue where stands that Sony can pick out a particular PS3 and put it on a blacklist,which is pressed on new bluray releases. Also the first thing has nothing to do with bluray only. How do you know that every cell has its unique key ? The Digital rights managment article and the cell article are talking imo about two different keys and not about the same thing.
Where does it say in your link that sony can put a single bluray player/PS3 on a blacklist. Does every Device have its own key ? It would be a lot of work for Sony and why having millions of different keys ? Not just 34 Million PS3 keys but another tens of millions of keys of other bluray player ? You gave me informations about the cell security architecture. And as far as I know those keys are the same in all PS3 cell CPUs. There arent 34 Million different keys out there ? And if there arent 34 Million keys out there then Sony cant single out a certain PS3.
If this is indeed true I apologize and I would be glad If I can have some other informations some article or something else where they explicitly mention those things. Its interesting to hear about. But in the moment it looks like you have made your own conclusions with the informations you got and I just cant see how you figured out it works that way.
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http://freedom-to-tinker.com/blog/jhalderm/aacs-blacklisting-oracles-and-traitor-tracing
"Blacklisting would be a PR and business disaster if it meant a lot of consumers had to throw away their fancy players as a result of a crack. That’s why AACS allows each individual player to be assigned its own unique set of device keys that can be uniquely blacklisted without adversely affecting other players."
http://www.freedom-to-tinker.com/blog/jhalderm/aacs-game-theory-blacklisting
Its not that hard to create 34 million keys... think of simplified example .. n%m = 0, if n is the encrypted content and m is the key, how many combination of n and m can you have that satisfy this cipher equation? Answer is infinite. Of course, in real life, encryption is done with chain-cipher-blocks which is harder to decrypt and the keys are hash generated which makes it harder to brute force.
Whether or not, Sony has done enough book keeping to keep a record of all device keys and their assoicated Ps3 is another issue, but it is definetly within the technology limit and their power to single out and blacklist specific PS3/blu-ray players.
I am not too certain what kind of information, you want. There are a lot of sites with articles regarding aacs blacklisting device keys. I found the one I just linked with google. Are you more interested in encryption information or DRM system?
Also, my second article about PS3 decryption is to prove to you that PS3 have their own decryption key since you previously thought that all decryption key was on the blu-ray disc opposed to being onthe system.
