Which brings us back to the early proposal to identify public keys by
their message digest. The syntax:
<digest algorithm identifier>, <digest of DER-encoded public key>
should work just fine. (It works for all types of key, and the size is
constant.)
-- Burt Kaliski
RSA Laboratories
______________________________ Reply Separator _________________________________
Subject: Re: summary of technical issues
Author: vitor(_at_)uminho(_dot_)pt at INTERNET
Date: 12/23/94 9:32 AM
Hey!
I hope it's not to late for me to reply.
Anyway, here's some considerations
Galvin wrote:
1. Suggestion to require key selector to be the public key
Currently the key selector may be chosen arbitrarily (within
specified functional constraints) by the owner of a public
key. It has been suggested this generality is unnecessary and puts
undue burden on implementors.
There is another question, related with this suggestion: imagine i want
to "hide" my public key, in order to give it only to "selected users" ?
This is a valid method to increase security in the exchange of
information between specifics users. Introducing the public key as a the key
selector removes this possibility.
If i may do so, i would like to suggest the use of the last bytes ( 8
or 16) as the key identifier, like PGP does. It's unique and doesn't
unveil the public key.
Vitor Fernandes <vitor(_at_)di(_dot_)uminho(_dot_)pt>