Now, if we're talking about keys derived from users' input then it's a whole different story. It's very much feasible to brute-force most of passwords that are easily memorable.
>This might be a reasonably safe assumption, but it's less than provable. Also note that the search space for quantum computers would be the square root of the search space size for von Neuman ones.
So just use 256-bit keys. Building a quantum computer capable of iterating through the 128-bit keyspace is very faaaar in the future if even practically possible, and it'll have the same issue with the boiling oceans.
>We can only use NSA's actions to forcast their capabilities. Right now there is an effort to make encryption mandatory for every HTTP connection in the next version of the HTTP standard.
NSA is not omnipotent. Also, it's far easier for them to force most of cloud providers to provide direct taps to their internal networks.
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