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- >> Peter Deutsch's message <9203051920.AA14978@expresso.cc.mcgill.ca>
- >> Actually, Mike Schwartz has suggested using CRC checksums,
-
- > From: Larry Masinter <masinter@parc.xerox.com>
- > You can do better than that by either:
- > a) use a good digital signature (MD5 or Snefru or ...). [...]
- > b) rely on something else that's unique, e.g., hostid + timestamp, ISO
- > DFR's DORs, Object Identifiers, etc.
-
-
- > We've been using 256-bit UDSNs and are happy with the scheme. I'm
- > hoping we'll have a writeup together before next week.
-
- Peter, USDN is your term, so you decide what is and isn't one.
-
- However, a UDI I define to be something you can use to get the object. You can't
- use digital signatures, or mail-style message-ids for that. You need some hints in
- the identifier as to where to start looking. (We're talking scalable distributed
- system here, no central hash tables allowed.) Knowing when you have a document that
- you have the right document is a different problem, but with a good name space
- (like x500) you can do both operations.
-
- Tim
-
-