Quote:
Originally Posted by DaveNB
Interesting.
That is more time/resource intensive for Sony as they have to create a custom file encrypted for each account on the fly/at the time of purchase. But Crypto wise, it's much more secure assuming they're using public key encryption. This way only the Public/Decryption keys are out there in user's hands and there is no way (hopefully if they used a good encryption method) to derive their Private/Encryption keys (specific to each account) that they hold exclusively on Sony's servers.
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Private key stored in your account on their server, public key on your reader. Each book encrypted to your private key.
Time/resource intensive? This is Sony. If they start to see a queue of transactions all they have to do is activate another cluster. And e-books are relatively small, so the time to encrypt one would not be a large issue. I wish it took more. Not a DRM fan.
