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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">At the very minimum, I believe that OPs must be required to not reject requests that include “request” or “request_file” parameters. A more reasonable minimum
might be to also require that if “request” or “request_file” parameters are present and the OP doesn’t choose to process the contents of an OpenID Request Object, that their presence be treated as a request for an OP-specified default set of claims.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">That way, if, for instance, an RP uses “scope=openid” and a request object containing {“userinfo”:{“claims”:{“given_name”:null}}} that the RP will get some
claims – even if they’re not the ones that it is expecting.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">In short, the OP should still treat the presence of “request” or “request_file” as requests for claims, even if it ignores the contents of the requests.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> -- Mike<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> John Bradley [mailto:ve7jtb@ve7jtb.com]
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<b>Sent:</b> Wednesday, January 30, 2013 1:41 PM<br>
<b>To:</b> Mike Jones<br>
<b>Cc:</b> Tim Bray; <openid-specs-ab@lists.openid.net><br>
<b>Subject:</b> Re: [Openid-specs-ab] MTI section in Messages Draft 15<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I understand that from a simplicity point of view only scopes is easier,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Though Google currently stringing together a long list of URI in scopes to represent individual claims is not any more elegent.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">This separates the fine grained claims with parameters e.g. age over x in the request object from the core grain scopes that can't have structure. <o:p></o:p></p>
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<p class="MsoNormal">The other issues revolve around needing signed requests for higher LoA (I know most people don't care), the authentication context (though that can be set in registration).<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I have always suspected that the request object as MTI would het push back. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">If we were to drop it from MTI then discovery would need to say if the IdP supports it. I don't think that is the end of the world for IdP who don't care about the addition;l functionality.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">However I would want to avoid having people invent other ways to encode claim requests that would not be interoperable.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">John B.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On 2013-01-30, at 2:07 PM, Mike Jones <<a href="mailto:Michael.Jones@microsoft.com">Michael.Jones@microsoft.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Interesting. The point of the Request Object is to give RPs control over the information they’re asking for and receiving. For instance, if all my RP wants
is your first name and the Request Object isn’t supported, it would have to use “openid profile” to get your first name, which also comes with middle name, last name, full name, nickname, preferred_username, profile URL, picture URL, website URL, gender, birthdate,
time zone, locale, and time last updated. That seems like overkill and doesn’t minimize disclosure of information to the RP.</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">But I understand the simplicity/minimality argument for your position.</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Let’s make this a discussion topic on tomorrow’s call.</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> Thanks,</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> -- Mike</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span class="apple-converted-space"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> </span></span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""><a href="mailto:openid-specs-ab-bounces@lists.openid.net">openid-specs-ab-bounces@lists.openid.net</a>
[mailto:openid-<a href="mailto:specs-ab-bounces@lists.openid.net">specs-ab-bounces@lists.openid.net</a>]<span class="apple-converted-space"> </span><b>On Behalf Of<span class="apple-converted-space"> </span></b>Tim Bray<br>
<b>Sent:</b><span class="apple-converted-space"> </span>Wednesday, January 30, 2013 8:40 AM<br>
<b>To:</b><span class="apple-converted-space"> </span><<a href="mailto:openid-specs-ab@lists.openid.net">openid-specs-ab@lists.openid.net</a>><br>
<b>Subject:</b><span class="apple-converted-space"> </span>[Openid-specs-ab] MTI section in Messages Draft 15</span><o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">I refer to the material in<span class="apple-converted-space"> </span><a href="http://openid.net/specs/openid-connect-messages-1_0.html#ImplementationConsiderations"><span style="color:purple">http://openid.net/specs/openid-connect-messages-1_0.html#ImplementationConsiderations</span></a><br>
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We’ve been discussing this at some length and probably would not ship a OP conforming to this draft, because our plans do not include support for OpenID Request Objects. It seems perfectly possible to implement an Internet-scale federated-login system with
good interoperability, security, user-experience, and developer-experience properties, entirely without the use of Request Objects. <span class="apple-converted-space"> </span><br>
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Given this, why are they considered essential for the MTI section? Absent Request Objects, our chances of shipping a conforming OP are pretty good.<o:p></o:p></p>
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<p class="MsoNormal"> -Tim<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"> <o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:13.5pt;font-family:"Helvetica","sans-serif"">_______________________________________________<br>
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<a href="mailto:Openid-specs-ab@lists.openid.net">Openid-specs-ab@lists.openid.net</a><br>
<a href="http://lists.openid.net/mailman/listinfo/openid-specs-ab">http://lists.openid.net/mailman/listinfo/openid-specs-ab</a><o:p></o:p></span></p>
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