Re: [Sip] Signing P-Asserted-Identity

["Dan Wing" <dwing at cisco.com>]

> On 7/9/08 4:19 PM, Dan Wing wrote:
> > But it doesn't matter what the ITSPs do inside their networks -
> > we can do this without the ITSP needing to do per-transaction
> > crypto, or TLS, or squat.  If it causes them no harm, causes
> > them no grief, and lets them continue Business As Usual, it's
> > a win for them and a win for the edge (their subscribers).
> >
> > We can provide edge-to-edge identity (between enterprises, or 
> > handset-to-handset) in both worlds:  the world that exists (which 
> > has ITSPs with B2BUAs and SBCs) and the world that we hope will
> > exist (RFC3263 routing on the Internet, perhaps with some
> > peer-to-peer sprinkled on top).  SIP's current identity mechanism,
> > RFC4474+RFC4916, only works with the latter.
> >
> > I want an identity mechanism that works with both.  And I have
> > long been convinced it is possible to build such a beast.
> 
> But *who* is going to deploy it?

The very same entity that cares about identity:  the subscriber
connected to the ITSP, such as an enterprise connected to its
SIP trunking provider.

-d

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