This is a subject which has been touched before. First question is: should 
OpenID incorporate a datamodel.

Yes, I think. RP need more clearity on this matter.


Op 10 dec 2009, om 16:37 heeft Santosh Rajan het volgende geschreven:

> 
> As usual I am going to digress a bit here. As far as I can see, the problem 
> with OpenID is that it does NOT have a "data model".
> 
> When we look at a data model, we don't really need to worry about the 
> serialization format. It could be anything, POST message key values, JSON, 
> RDF or Atom. The important thing is that we need a data model, and a 
> consistent one at that, through out the OpenID protocol process.
> 
> Once we have a proper data model in place, answering all these "discovery" 
> and "AX" questions will be trivial.
> 
> One more point about the trust issue. I am all for synchronous signatures 
> rather than asynchronous.
> 
> I am working on this. But this is not something I can do alone. Any 
> collaboration will be appreciated. And all work will be done under the OpenID 
> IPR.
> 
> Thanks all,
> Santosh
> 
> 
> 2009/12/10 Nat <[email protected]>
> This is a CX use case. In CX, user consent is captured in a signed document 
> called contract together with what gets sent under what circumstances. The 
> contract gets a unique URL to identity it and one can use that to point to 
> the collection of data as well. 
> 
> The WG is up and running so there is no need to wait.  
> 
> =...@tokyo via iPhone
> 
> On 2009/12/10, at 12:19, Allen Tom <[email protected]> wrote:
> 
>> Automatically sharing profile/avatar pic (with user consent) definitely adds 
>> a lot of value to both users and RPs, and profile pic was one of the most 
>> frequently requested attributes that we heard from potential RPs.
>> 
>> The Yahoo OP currently shares the URL to the user’s Yahoo Profile pic, 
>> however, the pic does not automatically get updated when the user updates 
>> their Yahoo Profile pic.
>> 
>> One of the things that I’d like to clarify in AX 1.1 is whether or not RPs 
>> should be able to deep link directly to the profile pic, or if they’re 
>> expected to download and cache it themselves. Also, if RPs are able to deep 
>> link to the profile pic, then we should also define whether or not the 
>> content of the URL be updated when the user updates their pic.
>> 
>> Allen
>> 
>> On 12/9/09 5:17 AM, "Jonathan Coffman" <[email protected]> wrote:
>> 
>> Avatars would definitely be huge. I can't tell you how frustrating it is as 
>> a user to update my avatar on all of the hundreds of sites I may encounter 
>> that require login.
>> 
>> Professionally, I've run into problems when bringing up Gravatar as a 
>> potential option... but again, that sets the bar so high that users are 
>> pretty unlikely to even go through that process.
>> 
>> Jonathan
>> 
>> 
>> On Dec 9, 2009, at 2:09 AM, Chris Messina wrote:
>> 
>> +1. I think those are the basic profile building blocks for social software. 
>> The avatar is something we particularly need for openid. 
>> 
>> Sent from my iPhone 2G
>> 
>> On Dec 8, 2009, at 22:06, John Panzer <[email protected]> wrote:
>> 
>> For my use cases, the important things are, unscientifically,
>> 
>> 1. Display name
>> 2. Avatar / photo
>> 3. Preferred link to human-readable online presence -- profile, blog, 
>> whatever strikes their fancy.  
>>  
>> 
>> 
>> 
>> On Tue, Dec 8, 2009 at 8:38 PM, David Recordon < 
>> <mailto:[email protected]> [email protected]> wrote:
>> I'm sure that the data is wildly out of date, but at the time the SREG
>>  fields ( 
>> <http://openid.net/specs/openid-simple-registration-extension-1_0.html#response_format>
>>  
>> http://openid.net/specs/openid-simple-registration-extension-1_0.html#response_format)
>>  were based on looking at what a few hundred different sites were
>>  asking for.
>>  
>>  I unscientifically think that the extremely common stuff is:
>>   - Name
>>   - Avatar / photo
>>   - Email address
>>  
>>  Scientifically, we should actually put some effort into looking at
>>  sign in pages again. :)
>>  
>> --David
>>  
>> 
>>  On Tue, Dec 8, 2009 at 7:59 PM, Jonathan Coffman
>>  < <mailto:[email protected]> [email protected]> wrote:
>>  > Out of curiosity, beyond the email discussion below what are the primary
>>  > metadata needs around the other major (PoCo) fields?
>>  > Speaking to the use-cases I work off of here at PBS, I'm primarily 
>> concerned
>>  > about emails being verified (and a signup date is also useful) and am most
>>  > inclined to trust the OP (especially if it were a white-listed or 
>> otherwise
>>  > vetted iDP).
>>  > Jonathan
>>  >
>>  > On Dec 8, 2009, at 2:17 PM, Chris Messina wrote:
>>  >
>>  > Is it worth looking at how Facebook handles the passing of profile data? 
>> Or
>>  > is their architecture/use case different?
>>  >
>>  >  <http://wiki.developers.facebook.com/index.php/Users.getInfo> 
>> http://wiki.developers.facebook.com/index.php/Users.getInfo
>>  > On Tue, Dec 8, 2009 at 11:08 AM, Breno de Medeiros < 
>> <mailto:[email protected]> [email protected]> wrote:
>>  >>
>>  >> On Tue, Dec 8, 2009 at 11:01 AM, John Panzer < 
>> <mailto:[email protected]> [email protected]> wrote:
>>  >> > For "one-time" URLs, you'd probably want to allow for retries for a
>>  >> > short
>>  >> > period (or just allow it to be accessed for say 5m) which would have
>>  >> > approximately the same level of protection.
>>  >> > You could also imagine long-lived capabilities along the lines of OAuth
>>  >> > tokens that allow RPs to repeatedly refresh the data as needed.  
>> (Better
>>  >> > of
>>  >> > course if they can subscribe to changes, but that's an implementation
>>  >> > detail
>>  >> > and definitely a separate spec.)
>>  >> > Given that AX already supports requesting URL-valued data (e.g., 
>> profile
>>  >> > photos) I think this just comes down to defining a fairly complicated
>>  >> > data
>>  >> > type for AX and passing a URL around.
>>  >>
>>  >> A more lightweight alternative is to adopt an 'artifact' mode where
>>  >> most of the OpenID assertion (request and response) can be passed in
>>  >> the backchannel. That is a bit more difficult to implement but easier
>>  >> to spec (because the existing URLs can be used) and more general
>>  >> (compacts all extensions, not only AX).
>>  >>
>>  >> > --
>>  >> > John Panzer / Google
>>  >> >  <mailto:[email protected]> [email protected] /  
>> <http://abstractioneer.org> abstractioneer.org <http://abstractioneer.org>  
>> / @jpanzer
>>  >> >
>>  >> >
>>  >> >
>>  >> > On Tue, Dec 8, 2009 at 10:57 AM, Peter Watkins < 
>> <mailto:[email protected]> [email protected]> wrote:
>>  >> >>
>>  >> >> On Tue, Dec 08, 2009 at 10:32:12AM -0800, John Panzer wrote:
>>  >> >>
>>  >> >> > provide to RPs.  If you send an endpoint URL to the RP instead of 
>> the
>>  >> >> > information itself, the RP can then retrieve it via a backchannel
>>  >> >> > (and
>>  >> >> > cache
>>  >> >> > it).  If you have private data, use a capability URL with a token
>>  >> >> > that
>>  >> >> > allows read-only access.
>>  >> >>
>>  >> >> Exactly. OpenID requests and responses are very chatty, and 
>> backchannel
>>  >> >> URLs could be an easy way to get around the 2k GET limit (the cost of
>>  >> >> course being additional time needed to make the additional HTTP
>>  >> >> requests).
>>  >> >>
>>  >> >> I don't see any reason for backchannel URLs to be requested multiple
>>  >> >> times,
>>  >> >> so in addition to a request or response using strongly random nonces 
>> in
>>  >> >> the backchannel URLs, the backchannel URLs should be very short-lived,
>>  >> >> probably each side "SHOULD" allow a URL to be requested only once, and
>>  >> >> throw a 403/404 for subsequent requests.
>>  >> >>
>>  >> >> Is there any draft of AX using backchannel URLs?
>>  >> >>
>>  >> >> -Peter
>>  >> >
>>  >> >
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>>  >> >
>>  >> >
>>  >>
>>  >>
>>  >>
>>  >> --
>>  >> --Breno
>>  >>
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>>  >
>>  > --
>>  > Chris Messina
>>  > Open Web Advocate
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> 
> -- 
> http://hi.im/santosh
> 
> 
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