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Subject: Re: [security-services] SAML @ IETF


Thanks for this helpful summary.

Could you please add my name to the GSS API interest group considering 
use of SAML? We would be interested in use of SAML as an
authentication mechanism in GSS (or related frameworks).

- prateeek

> As I mentioned on the TC call on Nov 22, there has occasionally been 
> interest in SAML in activities in and around the IETF.  There seemed 
> to be more interest at the recent IETF meeting (in Vancouver Nov 7-11) 
> based on conversations I had with a number of people.  Here's some 
> info on this offered as a public service to the SAML community (ie, 
> I'm not proposing any TC work related to any of this).
> One venue is SIP (not SXIP as reported in the conf call minutes), ie 
> the Session Initiation Protocol used for Internet telephony etc.  
> There is a document:
>   draft-tschofenig-sip-saml-04.txt
> that has been kicking around for a while, describing how SAML might be 
> used in SIP.  The primary motivation is getting user (caller) 
> attributes to a relying party.  This item is now in the SIP WG 
> charter, which means a certain level of commitment to finishing it.  
> Concern was expressed at the WG session that it seems to be taking a 
> long time to be moving from good idea to spec.  I think this could be 
> helped by participation from SAML-knowledgable persons, so I've 
> started a list for discussion of the topic.  SIP is a more complex 
> application space than you might think, so it's something of a design 
> challenge.  If you'd like to join the list let me know (I'm keeping it 
> design-teamy at the moment rather than a big public thing).
> Another venue is SASL/GSS.  There is interest in both specifying SAML 
> as a native SASL and/or GSS security mechanism, and in specifying how 
> SAML attribute statements could be used in the context of existing 
> mechanisms such as Kerberos.  In the "kitten" WG there's work on 
> extending GSSAPI "naming" to include general attributes as well as the 
> GSS traditional userid type identifiers, see 
> draft-ietf-kitten-gss-naming-03.txt , partly motivated by the possible 
> use of SAML attribute statements in GSS mechanisms.  I've started a 
> list for this topic too, let me know if you're interested.
> Not really SAML but close enough to mention is the interest in 
> improving actual HTTP authentication.  One motivation for this is the 
> Caldav protocol for calendar access that is nearing completion, and is 
> based on Webdav, which of course is based on HTTP.  Since 
> Caldav/webdav clients aren't web browsers the methods we use to make 
> the SAML web browser profile won't work for them, which leaves Basic 
> and Digest as the only authentication choices.  There has been a doc 
> floating around for a while proposing SASL for HTTP, but it has many 
> problems; so people are taking a fresh look at this.  There's a list 
> for this:
>   http://lists.osafoundation.org/cgi-bin/mailman/listinfo/ietf-http-auth
> that has been fairly active in the last month or so.
> Lastly, the fine folks from SXIP initiated a discussion of "identity 
> exchange" in the IETF context, see
>   https://www1.ietf.org/mailman/listinfo/dix
> with the intent to start a WG on the topic, and to standardize a 
> protocol (not necessarily SXIP).  Considerations of whether such a 
> thing is useful given SAML, WS-*, etc are certainly in scope for the 
> discussion.
>  - RL "Bob"
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