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- From: brnstnd@nyu.edu (D. J. Bernstein)
- Newsgroups: sci.crypt
- Subject: Re: User authentication
- Message-ID: <18293.Aug3004.52.1592@virtualnews.nyu.edu>
- Date: 30 Aug 92 04:52:15 GMT
- References: <19253.Aug2700.31.1692@virtualnews.nyu.edu> <1992Aug28.140033.466@sniap.mchp.sni.de>
- Organization: IR
- Lines: 46
-
- In article <1992Aug28.140033.466@sniap.mchp.sni.de> frank@D012S436.sniap.mchp.sni.de () writes:
- > So if this is interesting, how come more people don't post anonymously?
- > Why is your message signed Dan Bernstein, not Guess Who?
-
- Where do you get the idea that people don't often post anonymously?
-
- I have forged all but a small fraction of the messages I have ever
- posted. Many of them appear under the name ``Dan Bernstein''---which,
- you should note, is shared by at least three different real people who
- post to USENET. Many of them do not, and if I don't choose to point out
- that those other names are controlled by the same real person, then you
- will never know. Who cares?
-
- Public-key cryptography gives you the opportunity to maintain a key
- which everyone knows but only you (and whoever you share needles with,
- so to speak) can use. This gives a *continuity* to keys which neither
- requires nor benefits from an association between keys and ``real
- people.''
-
- > I assume that you would be peeved
- > if 10,000 people started placing "secure" posts associated
- > with the name Dan Bernstein, for example.
-
- If public-key cryptography weren't kept out of the public's hands by a
- small group of people, I would be able to choose my own keys and have
- them be recognized as *mine*. I'm not peeved about the existence of
- multiple people with the same name---that's just a fact of life.
-
- (In the July 1992 Bulletin of the AMS, Shreeram Abhyankar says that
- Peter Neumann said that William Snow Burnside, who worked on the theory
- of equations, is not the same as William Burnside, who worked on the
- theory of groups of finite order. Both obtained a D.Sc. from Dublin
- around 1890.)
-
- > But I also see applications for secure newsgroups based on
- > real world identities.
-
- I do not. In fact, unless you have an application which depends on the
- difference between one real person with two names and two people who
- happen to cooperate (overtly or secretly), an obvious isomorphism
- argument shows that your application *cannot* depend on ``real world
- identities.'' Except for certain government functions (such as voting) I
- see no such applications; and those functions won't be carried out on
- newsgroups any time this millenium.
-
- ---Dan
-