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<p class="MsoNormal"><span style="color:#1F497D">FYI<o:p></o:p></span></p>
<p class="MsoNormal"><span style="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""> Mike Jones
<br>
<b>Sent:</b> Wednesday, September 09, 2015 11:54 PM<br>
<b>To:</b> specs@lists.openid.net; 'general@lists.openid.net'<br>
<b>Subject:</b> OpenID Connect Back-Channel Logout Specification<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">A new back-channel OpenID Connect Logout spec has been published at
<a href="http://openid.net/specs/openid-connect-backchannel-1_0.html">http://openid.net/specs/openid-connect-backchannel-1_0.html</a>. This can coexist with or be used instead of the front-channel-based
<a href="http://openid.net/specs/openid-connect-session-1_0.html">Session Management</a> and
<a href="http://openid.net/specs/openid-connect-logout-1_0.html">HTTP-Based Logout</a> specifications.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The abstract for the new specification states:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><i>This specification defines a logout mechanism that uses back-channel communication between the OP and RPs being logged out; this differs from front-channel logout mechanisms, which communicate logout requests
from the OP to RPs via the User Agent.<o:p></o:p></i></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">This completes publication of the three planned OpenID Connect logout mechanisms: two that communicate on the front-channel through the User Agent (browser) and this one that communicates on the back-channel, without involving the User
Agent. See <a href="http://openid.net/specs/openid-connect-backchannel-1_0-00.html#Introduction">
the Introduction</a> for a discussion of the upsides and downsides of the different logout approaches. As much as we'd like there to be a single logout solution, both experience and extensive discussions led us to the conclusion that there isn't a feasible
one-size-fits-all approach.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Reviews of the new (and existing!) specifications are welcomed.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks to John Bradley, Pedro Felix, Nat Sakimura, Brian Campbell, and Todd Lainhart for their contributions to the creation of the specification.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> -- Mike<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">P.S. This note was also published at <a href="http://self-issued.info/?p=1452">
http://self-issued.info/?p=1452</a> and as <a href="https://twitter.com/selfissued">
@selfissued</a>.<o:p></o:p></p>
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