The Elevator Problem

[Bryan L Andrews]

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Rob wrote: 

>This may be old hat, but an earlier post (around the time the Kocher
>RSA-timing attack came out) to the list asked about the "Elevator
>Problem", where two parties who think they share the same secret want
>to confirm it on an open channel.  I came up with an idea for a
>protocol but never got around to posting it, and dropped off the list
>briefly... so pardon me if this is already touched upon.

............

>Comments?



This reminds me of the discussions I've seen over the last few months regarding 
oblivious transfers/zero-based transactions. Good article in Scientific 
American on it a few months ago.

Bryan.


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