On Tue, Aug 28, 2012 at 03:54:19AM +0200, No such Client wrote: > Why put your pubkey up forever, to make it easier to socially or > technically attack your comms?
I mean, by having access to a public key turns the technological attack on encrypted data from an intractable one to an intractable one. You might now have a problem that goes with some smaller number raised to the n, but that grows exponentially with n nonetheless. > Perhaps it is different in your country, however in the military, we > often have to think pragmatically of the human weakness, and when > symmetric or pKI is appropiate. Otherwise, others are at risk. Yes, it is fortunate that I, and indeed most of the cryptographic community, will likely never face any sort of physical coercion. I, for one, am more concerned with privacy than with any serious data sensitivity. But the addition of a frail human element into the problem is certainly interesting. If one can torture a passphrase or key out of someone, what is to stop them from extracting the encrypted data from the person as well? After all, in the situations you hint at, it is this which is actually relevant to the torturing party. pants.
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