Comment by acqq
12 years ago
If you would use one-time-pad before storing to the cloud you'd either need to store the very same pad on the cloud, then effectively not needing encryption, or you wouldn't need the cloud, as the amount of the encrypted data would match the amount of the pad data one to one.
And homomorphic encryption is still far from being practical.
Sure, one would more realistically use any standard encryption scheme. Agreed on homomorphic encryption as mentioned in my previous comment. But "impractical" is a far cry from "fundamentally impossible".
Impractical is in sense "nobody can actually it, only the papers are written about it." Practically impossible to use.
A lot of things that were practically impossible 50 (or even 5) years ago are commonplace today.
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