inline 

> -----Original Message-----
> From: Jonathan Rosenberg [mailto:[EMAIL PROTECTED] 
> Sent: Thursday, July 05, 2007 7:38 PM
> To: Rai, Anupam (Anupam)
> Cc: Steve Dotson; IETF SIP List; DRAGE,Keith (Keith); Dean Willis
> Subject: Re: [Sip] Certificate authentication in SIP
> 
> inline:
> 
> Rai, Anupam (Anupam) wrote:
> >  
> > inline
> > 
> >> -----Original Message-----
> >> From: Jonathan Rosenberg [mailto:[EMAIL PROTECTED]
> >> Sent: Thursday, July 05, 2007 6:33 PM
> >> To: Rai, Anupam (Anupam)
> >> Cc: Steve Dotson; IETF SIP List; DRAGE,Keith (Keith); Dean Willis
> >> Subject: Re: [Sip] Certificate authentication in SIP
> >>
> >>
> >>
> >> Rai, Anupam (Anupam) wrote:
> >>> (1) Will the the P-A-ID syntax require modification to carry UA's 
> >>> certificate related information (Obtained during mutual
> >> TLS) from edge
> >>> proxy to home proxy or registrar ?
> >> Yes. You'd get nothing but the identity. Do you need more?
> >>
> > [Anupam Rai]
> > Identity as asserted by certificate presented by UA during 
> mutual TLS 
> > or identity as established by edge proxy after consulting some 
> > authentication service/database ?
> 
> As asserted by the certificate. In other words, the edge 
> proxy would validate the client cert, extract the 
> subjectAltName which presumably has something like 
> [EMAIL PROTECTED] somewhere and then shoves that into a 
> P-Asserted-ID. Or if it matches the From it would use RFC 
> 4474 and sign the request.

[Anupam Rai]
It would be nice to include some more information related to certificate
presented by UA. At a minimum identity of the UA's certificate issuer is
required.

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


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