Quote:
Originally Posted by dizzier
Verifying processing key is not a single AES operation. Unless you know the position of the key in subset-difference tree you must do over 500 AES operations to test one processing key with a single version of MKB.
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Actually, it is a single operation. There are roughly 500 entries, each requiring a different processing key, leading to the same media key. All you need is one, you wouldn't be looking to find all 500. Also it's only a single MKB you'd be examining.
Well, and then there is another aes op required to verify, but that's all. 2^129 aes operations to verify all possible processing keys for any chosen one of the "slots" or whatever they are called.