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- Newsgroups: sci.crypt
- Path: sparky!uunet!cis.ohio-state.edu!daisy.learning.cs.cmu.edu!Marc.Ringuette
- From: Marc.Ringuette@daisy.learning.cs.cmu.edu
- Subject: Re: User authentication
- Message-ID: <9208261827.AA02445@news.cis.ohio-state.edu>
- Sender: daemon@cis.ohio-state.edu
- Organization: The Ohio State University Department of Computer and Information Science
- Date: Wed, 26 Aug 1992 17:20:00 GMT
- Lines: 41
-
- Carl writes,
- > That's a different point, though. What I'm trying to point out is that you
- > deal with me in a very real sense but you've never met me and aren't likely
- > to. Therefore, we don't need physical contact in order to communicate.
- ...
- > If I can move money around with only my key and get caught in a love
- > triangle with only my key, what more do I have to do? :-)
-
- I disagree with the strong form of your claim, Carl, but agree with a
- weak form.
-
- If your claim is "It doesn't matter if someone is intercepting all our
- messages; one electronic entity is the same as any other," then I disagree.
- Many people trust their ability to tell "what kind of person" is on the other
- end of the wire, after they've corresponded for a while. There's a world of
- difference, to such a person, between "you" and "you plus a thousand people
- listening in, including the FBI and the Washington Post".
-
- But I agree with the weaker claim, that it's reasonable to correspond
- with and trust an electronic persona. We should therefore strive to
- provide a means by which each persona-owner can make sure that his or
- her persona is being accurately transmitted to the world. My secure
- newsgroup, if it works, could do this. "Persona Certificates", as
- proposed for the PEM project, are another way. They would allow people to
- register "persona" public keys, labeled as such, using the same certificate
- mechanisms as for personal or organizational use.
-
- I think personas reliably associated with public keys are a good thing.
- However, I believe there are times when it's still a very good idea to
- require a person's physical presence. It takes 20 years to create a person.
- It takes 20 minutes, or perhaps 20 hours or 20 days, to create a fictitious
- electronic person complete with a history of correspondence. It all depends
- on how much stability you need, I guess.
-
-
- [ Marc Ringuette | Cranberry Melon University, Cucumber Science Department ]
- [ mnr@cs.cmu.edu | 412-268-3728 | ".surivorter erutangis a ma I" ]
- [ ripem public key: ]
- [ MFkwCgYEVQgBAQICAgADSwAwSAJBALu5OFJmAZ4hhNMBXyA5YeMBQFZhbXJ7yapG ]
- [ VkAqMMGmyAx2k2A7EfLgwu9NRqDYCyTdwDXU5lvPLG7o36Lnw6UCAwEAAQ== ]
- [ ripem is unix-based, using RSA and a PEM-like format; send mail for info. ]
-