Re: Presence service identifiers

Graham Klyne <[email protected]> writes:

> It seems to me that the presence service is implicitly that for the
> domain of the presentity -- the presentity identifier indicates a
> service, which is the same service for different presentities in the
> same domain.

To allow signing presence services to prove only they are allowed to
use an given identity, they must have an identity no one else can
use.  For strong end-to-end authentication, it is critical that
principals identify only one subject.  See the other note I sent to
this list today for details.

John



  [reminder: [email protected] for non-technical discussions, please]