Re: Proving I'm not Bob.

On Tue, 21 Nov 1995, David Scheidt wrote:

What is this system? I can't think of any system that wouldn't work if rearranged so that instead of proving you aren't Bob, you simply don't prove that you are. It is true that they are not isomorphic, and that could be a problem in some situations, but I don't see this as one of them.

Hal and Futplex pretty much described it. I figured a proof of non-identity (if possible) would have saved one hell of a lot of messy authentication in those cases when there is only one possible cheater (due to economic incentives) with many possible pseudonyms (or friends).