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Re: [Sip] GRUU and Anonymity



The proposal was that it would have the lifetime of the registration. It would remain fixed during refreshes, but if your registration lapses and expires, or is ended with Expires:0, when you log back on with a new registration you'd get a new pseudononymnous gruu.

-Jonathan R.

Dale.Worley at comcast.net wrote:

   From: Jonathan Rosenberg <jdrosen at cisco.com>

So what is your view on the specific mechanism I was proposing to meet this objective? Namely, that the registrar would provide you with a 'regular' gruu and a pseudononymous one, and the latter changes every time you create a new registration (not refresh, a new one entirely).

I agree that you've shown the necessity of modifying GRUU to support
this level of anonymity.  But one clarification -- is the
"pseudononymous GRUU" expected to have a longer lifetime than the
registration, or do you envision it having the same lifetime?

If the latter, it seems that implementing "pseudononymous GRUUs" is
simple, and not much of a burden on Registrars, since they can be
created by any method and stored in the record of the registration.
If the former, then we need to consider how a family of pseudononymous
GRUUs for each UA can be managed.

Dale

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-- Jonathan D. Rosenberg, Ph.D. 600 Lanidex Plaza Cisco Fellow Parsippany, NJ 07054-2711 Cisco Systems jdrosen at cisco.com FAX: (973) 952-5050 http://www.jdrosen.net PHONE: (973) 952-5000 http://www.cisco.com

_______________________________________________
Sip mailing list  https://www1.ietf.org/mailman/listinfo/sip
This list is for NEW development of the core SIP Protocol
Use sip-implementors at cs.columbia.edu for questions on current sip
Use sipping at ietf.org for new developments on the application of sip