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Are X.500 names feasible?

1994-02-03 19:14:00
-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 4,MIC-CLEAR
Content-Domain: RFC822
Originator-ID-Asymmetric: MFMxCzAJBgNVBAYTAlVTMQswCQYDVQQIEwJNRDE
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MIC-Info: RSA-MD5,RSA,J6tn1R723rn6oOukG0uvbhCnavKAr27USL/sfQzOOzP
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The attached exchange between anish(_at_)ctt(_dot_)bellcore(_dot_)com and
Jueneman(_at_)gte(_dot_)com is focused on the handling of nicknames.  However,
the underlying assumption is that email addresses are the basic form
of identity used in the Internet.

In my view, the introduction of X.500 distinguished names has been a
very troublesome venture, and I see no evidence that things will get
better.  Quite a lot has to happen before X.500 names are genuinely
useful as the basis for identity on the net.

Given the very serious difficulties of deploying PEM using X.500
distinguished names, perhaps it's time to ask the question directly.
Do we want to shift over toward using email addresses in place of the
current regime of distinguished names?

If we want to shift over toward using email names, then certificates
would bind email addresses to keys.  There might exist directories
that map email addresses to more detailed information, but the email
address would be the principal handle by which keys would be
associated with people.


Steve


You seem to want to tie a certificate to an e-mail address, whereas
I would prefer to tie BOTH to a locally-known name or nickname, 
regardless of how it gets delivered (i.e., to which one of several 
possible mail boxes.)

I agree totally with this point. However, I believe it would be the 
responsibility of the user agent to handle nickname-to-emailname aliasing. 
The responder should only have to know email addresses, since that's the 
generally accepted name scheme used in the mail world. Nicknames should be 
defined locally - can you imagine how large an alias file would get if a 
repository had to keep local aliases for all potential users?

You'd still be able to use your nicknames, but they would have to be 
resolved into email names at the UA, the same way that email-to-DN mapping 
would have to be resolved prior to accessing the certificate.
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