Quote:
Originally Posted by tonyp12
So what does this mean?
You can now write a decrypter program that can
handle all disc to this date?
Or do you need the major device key for that and
not this sub-device key?
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We need a Private Host Key (to get volume ids) for fully independent decryption of all existing discs. I'm working 24/7 on this (and hopefully others do too) but haven't had any luck yet
. My ecdsa crypto setup is working now though (eg. can verify stuff using pub keys from drive and/or host) and its quite speedy now. Using openssl.
The above sub device key has the same value as the Processing Key atm. But its nice to have a (sub) Device Key
. More Device Keys (although nice) won't help decrypt existing discs (since we already have the Processing Key and on every disc this same Processing Key is used).
We've conquered the green part. We still need to get the Host Private Key (red) to get Volume IDs (we can sniff/guess them but thats not very userfriendly).