------- Original message -------
From: Hadriel Kaplan <[EMAIL PROTECTED]>
Cc: [email protected], [EMAIL PROTECTED], [EMAIL PROTECTED]
Sent: 15.3.'08,  12:14

> 
> 
> > -----Original Message-----
> > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of 
Dean
> > Willis
> >
> > I had thought Adam was changing the From header field in the
> > authentication server, which would confuse RFC 2543 style gateways.
> >
> > Rather, he is suggesting that SRTP-DTLS compliant gateways add a
> > parameter to their From header field that indicates the identity was
> > received PSTN and should be treated accordingly.
> 
> I think they should add it as a URI-param, or even URI-username param.  
Both because it's about the type of username or URI itself, and because 
then rfc4474 would actually include that param in its signature, so no one 
in the middle could change it.  Of course that uri-param already exists: 
user=phone.  Or is that not the right semantic?


yes, that is what I think Adam proposed in general. To reiterate, he 
suggested adding a URI paramter to the URI in the From header field at the 
gateway device.  

As I understand it, there are use cases where an authentication service can 
make a strong assertion of idenity about a URI that has user=phone, so I do 
not think that has the semantic we are looking for. I think we need another 
parameter.

--
dean
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