<html><head></head><body><div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; background-color: white;">Has there been any feedback on this? <br>
<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; background-color: white;"><div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; background-color: white;">Get <a href="https://aka.ms/ghei36">Outlook for Android</a></div>
<br>
</div>
<br><br><br>
<div class="gmail_quote">On Tue, Jul 11, 2017 at 11:16 PM +0200, "Axel Nennker via Openid-specs-fapi" <span dir="ltr"><<a href="mailto:openid-specs-fapi@lists.openid.net" target="_blank">openid-specs-fapi@lists.openid.net</a>></span> wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="3D"ltr"">
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;
mso-fareast-language:EN-US;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
pre
{mso-style-priority:99;
mso-style-link:"HTML Preformatted Char";
margin:0cm;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:"Courier New";}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri",sans-serif;
color:windowtext;}
span.HTMLPreformattedChar
{mso-style-name:"HTML Preformatted Char";
mso-style-priority:99;
mso-style-link:"HTML Preformatted";
font-family:"Courier New";
mso-fareast-language:DE;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri",sans-serif;
mso-fareast-language:EN-US;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:70.85pt 70.85pt 2.0cm 70.85pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
<div class="WordSection1">
<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">In Client Initiated Backchannel Authentication there are two modes how the results are transferred back to the client.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Polling and notification.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">When the mode is notification then the OP posts the authentication result (the tokens) back to the client.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><a href="https://xml2rfc.tools.ietf.org/cgi-bin/xml2rfc.cgi?Submit=Submit&format=ascii&mode=html&type=ascii&url=https://bitbucket.org/openid/mobile/raw/tip/draft-mobile-client-initiated-backchannel-authentication.xml?at=default#rfc.section.3.5.3">https://xml2rfc.tools.ietf.org/cgi-bin/xml2rfc.cgi?Submit=Submit&format=ascii&mode=html&type=ascii&url=https://bitbucket.org/openid/mobile/raw/tip/draft-mobile-client-initiated-backchannel-authentication.xml?at=default#rfc.section.3.5.3</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Obviously not everybody on the Internet should be able to post to that client endpoint.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">So when the Client sends an CIBA Authentication Request that request contains a bearer token and when the user has authenticated and the OP notifies the Client this token is used to authenticate the OP to the Client.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Currently there is no other way to authenticate the OP when notifications are posted.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Should we make CIBA more flexible here?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Does FAPI require better authentication?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Kind regards<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Axel<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<pre><span lang="EN-US">In the example from CIBA this “Authorization: Bearer 8d67dc78-7faa-4d41-aabd-67707b374255” is the bearer token which is provided by the client in the Authentication request "client_notification_token": "8d67dc78-7faa-4d41-aabd-67707b374255".<o:p></o:p></span></pre>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:DE"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:DE"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:DE"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:DE"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><b><span style="font-size:8.0pt;font-family:"Arial",sans-serif;mso-fareast-language:DE">DEUTSCHE TELEKOM AG</span></b><span style="font-size:8.0pt;font-family:"Arial",sans-serif;mso-fareast-language:DE"><br>
T-Labs (Research & Innovation)<br>
Axel Nennker<br>
Winterfeldtstr. 21, 10781 Berlin<br>
+491702275312 (Tel.)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;mso-fareast-language:DE">E-Mail: axel.nennker@telekom.de<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:DE"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:DE"><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</div>
</blockquote>
</div>
</body></html>