<html><head></head><body bgcolor="#FFFFFF"><div>Actually, after Johns blog post about the vulnerability of OAuth as authentication, I got a strong feedback from security and privacy community that it is insane to send the token to the server. The token was issued to the user agent and sending that to the server constitutes security, privacy and policy breach. If we are to avoid sending token to the server, implicit flow is not simple any more. We have to use CORS or postMessage inter frame communication etc. </div>
<div><br></div><div>That is another reason to consider the possibility of making the code flow the default. <br><br>Nat Sakimura</div><div><br>On 2012/02/21, at 23:40, John Bradley <<a href="mailto:ve7jtb@ve7jtb.com">ve7jtb@ve7jtb.com</a>> wrote:<br>
<br></div><div></div><blockquote type="cite"><div>No problem, sometimes even I am surprised by things that have snuck in or are left over from older versions.<div><br></div><div>Do you still prefer the code follow for the basic client profile?</div>
<div><br></div><div>John<br><div><div>On 2012-02-21, at 11:23 AM, Justin Richer wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">
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Hrm. Reading through the drafts again just now, it does clearly say
that 'code' and 'token id_token' are MTI, so I'm not sure where I
got that impression from. My mistake.<br>
<br>
-- Justin<br>
<br>
On 02/21/2012 09:14 AM, John Bradley wrote:
<blockquote cite="mid:BB3295CC-EA0F-4CFF-A686-A13703E97E71@ve7jtb.com" type="cite">Both code and 'token id_token' should be mediatory to
implement for servers.
<div><br>
</div>
<div>Is there a particular place that you are seeing that in the
spec. I think that is a bug, if true. I will look for it
today.</div>
<div><br>
</div>
<div>If the WG did want code to be the only MTI flow then we would
defiantly need to change the basic profile to code.</div>
<div><br>
</div>
<div>John<br>
<div>
<div>On 2012-02-21, at 10:47 AM, Justin Richer wrote:</div>
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<div bgcolor="#FFFFFF" text="#000000"> I would prefer to
have the Basic Client use the code flow for another
reason: the code flow is the only one that's mandatory to
implement for the server. So what we have right now is
advice for servers to implement something that our advice
to clients say they don't have to.<br>
<br>
-- Justin<br>
<br>
On 02/20/2012 07:30 PM, John Bradley wrote:
<blockquote cite="mid:320D07FB-4DB3-413E-B29A-A7607F3C76AD@ve7jtb.com" type="cite">
<pre>Torsten,
>From your tickets it looks like you are thinking that the Basic client profile is for JS clients in the browser doing canvas type Aps and directly accessing the check_id and user_info endpoints.
The idea for what i't worth was that it is intended to be a Web server profile that uses the browser side implicit flow, with a simple sever side callback that extracts the fragment and passes it to the server for processing and verification. That is why Cross Origin Resource sharing is not mentioned win that profile.
It is true that that profile could be used for a Canvas type JS app in the browser accessing the endpoints as well.
Would your preference have been to make the basic client use the code flow? It is arguably similar in complexity at the end of the day, but with better security for Web Server type applications.
I would probably just have the client base64 decode the id_token and forget calling the check_id endpoint. If the client doesn't have the correct token endpoint and gives the client secret to it checking the signature on the id_token is not very useful:)
Regards
John B.
On 2012-02-20, at 3:58 PM, Torsten Lodderstedt wrote:
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<blockquote type="cite">
<pre>Hi all,
I'm unable to find out whether OpenID Connect supports public clients. It seems Connect assumes all clients register with the OP and obtain a client credential. If this observation is correct, what is the reason for being more restrictive than OAuth?
regards,
Torsten.
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