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<p class="MsoNormal"><span style="font-size:11.0pt">I’ve created <a href="https://bitbucket.org/openid/eap/pull-requests/2">
https://bitbucket.org/openid/eap/pull-requests/2</a>, which adds Security Considerations on preventing downgrade attacks by using signed requests.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> -- Mike<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Openid-specs-eap <openid-specs-eap-bounces@lists.openid.net>
<b>On Behalf Of </b>Michael Jones via Openid-specs-eap<br>
<b>Sent:</b> Saturday, March 29, 2025 3:54 PM<br>
<b>To:</b> Andrii Deinega <andrii.deinega@gmail.com><br>
<b>Cc:</b> Joni Brennan <jonibrennan@gmail.com>; leifj@sunet.se; openid-specs-eap@lists.openid.net<br>
<b>Subject:</b> Re: [OpenID-specs-EAP] WGLC for OpenID Connect EAP ACR Values spec<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt">We could add a reference to RFC 9191 in the Security Considerations, and in particular, cite the
<a href="https://www.rfc-editor.org/rfc/rfc9101.html#name-downgrade-attack">Downgrade Attack</a> considerations. What do others think?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> -- Mike<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Andrii Deinega <<a href="mailto:andrii.deinega@gmail.com">andrii.deinega@gmail.com</a>>
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<b>Sent:</b> Thursday, March 27, 2025 3:13 PM<br>
<b>To:</b> Michael Jones <<a href="mailto:michael_b_jones@hotmail.com">michael_b_jones@hotmail.com</a>><br>
<b>Cc:</b> Joni Brennan <<a href="mailto:jonibrennan@gmail.com">jonibrennan@gmail.com</a>>;
<a href="mailto:leifj@sunet.se">leifj@sunet.se</a>; <a href="mailto:openid-specs-eap@lists.openid.net">
openid-specs-eap@lists.openid.net</a>; Dean Saxe <<a href="mailto:dean.saxe@beyondidentity.com">dean.saxe@beyondidentity.com</a>><br>
<b>Subject:</b> Re: [OpenID-specs-EAP] WGLC for OpenID Connect EAP ACR Values spec<o:p></o:p></span></p>
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<p class="MsoNormal">Mike, I’m curious whether the security considerations section in this spec should recommend passing request parameters (especially those that include acr_values) as
<a href="https://www.rfc-editor.org/rfc/rfc9101.html">JWT-Secured Authorization Requests (JAR)</a>, or as <a href="https://datatracker.ietf.org/doc/html/rfc9126">Pushed Authorization Requests (PAR)</a>.<o:p></o:p></p>
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<p class="MsoNormal">Otherwise, parameter acr_values could be removed without detection on an OP side.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">PARs and encrypted JARs also allow to hide from others what's specifically requested from an RP to an OP.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">All the best,<o:p></o:p></p>
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<p class="MsoNormal">Andrii<o:p></o:p></p>
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<p class="MsoNormal">On Thu, Mar 27, 2025 at 7:53<span style="font-family:"Arial",sans-serif"> </span>AM Dean Saxe via Openid-specs-eap <<a href="mailto:openid-specs-eap@lists.openid.net">openid-specs-eap@lists.openid.net</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">I support progressing this spec to final.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">-dhs<br clear="all">
<o:p></o:p></p>
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<p class="MsoNormal">--<o:p></o:p></p>
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<p class="MsoNormal">Dean H. Saxe, <a href="https://idpro.org/cidpro/" target="_blank">
CIDPRO</a> (he/him)<o:p></o:p></p>
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<p class="MsoNormal">Principal Engineer<o:p></o:p></p>
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<p class="MsoNormal">Office of the CTO<o:p></o:p></p>
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<p class="MsoNormal">Beyond Identity<o:p></o:p></p>
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<p class="MsoNormal"><a href="mailto:dean.saxe@beyondidentity.com" target="_blank">dean.saxe@beyondidentity.com</a><o:p></o:p></p>
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<p class="MsoNormal">On Mar 25, 2025 at 5:49:29<span style="font-family:"Arial",sans-serif"> </span>PM, Michael Jones via Openid-specs-eap <<a href="mailto:openid-specs-eap@lists.openid.net" target="_blank">openid-specs-eap@lists.openid.net</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt">This message starts a 2-week Working Group Last Call for the
<a href="https://openid.net/specs/openid-connect-eap-acr-values-1_0.html" target="_blank">
OpenID Connect Extended Authentication Profile (EAP) ACR Values 1.0</a> specification, prior to submitting it to Foundation-wide review for Final status. The Context Class values “</span><span style="font-size:11.0pt;font-family:"Courier New"">phr</span><span style="font-size:11.0pt">”
and “</span><span style="font-size:11.0pt;font-family:"Courier New"">phrh</span><span style="font-size:11.0pt">” are now registered in the IANA “Level of Assurance (LoA) Profiles” registry at
<a href="https://www.iana.org/assignments/loa-profiles/" target="_blank">https://www.iana.org/assignments/loa-profiles/</a>.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt">The WGLC ends on Tuesday, April 8<sup>th</sup>. Please reply-all to this e-mail indicating whether you support progressing the specification to Final
status.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt">After it becomes Final, we anticipate closing the
<a href="https://openid.net/wg/eap/" target="_blank">EAP working group</a>.</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt"> Thanks,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt"> -- Mike</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Michael Jones
<br>
<b>Sent:</b> Sunday, March 23, 2025 11:07 PM<br>
<b>To:</b> <a href="mailto:openid-specs-eap@lists.openid.net" target="_blank">openid-specs-eap@lists.openid.net</a><br>
<b>Cc:</b> <a href="mailto:leifj@sunet.se" target="_blank">leifj@sunet.se</a>; Joni Brennan <<a href="mailto:jonibrennan@gmail.com" target="_blank">jonibrennan@gmail.com</a>>; John Bradley <<a href="mailto:ve7jtb@ve7jtb.com" target="_blank">ve7jtb@ve7jtb.com</a>><br>
<b>Subject:</b> Context Class values added to OpenID EAP ACR Values spec</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt">I’ve updated the
<a href="https://openid.net/specs/openid-connect-eap-acr-values-1_0.html" target="_blank">
OpenID Connect Extended Authentication Profile (EAP) ACR Values 1.0</a> specification to add the Context Class values needed to enable registration of the two ACR values indicating that phishing-resistant authentication or phishing-resistant-hardware-backed
authentication is being requested or has been performed. Thanks to Leif Johansson for explaining how to create the Context Class files. They can both be found at
<a href="https://bitbucket.org/openid/eap/src/master/" target="_blank">https://bitbucket.org/openid/eap/src/master/</a>.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt">The IANA registrations have been requested – with tracking number [IANA #1415585].</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt">Once these registrations occur, unless working group members want other updates to the spec, we should be able to take the specification to Final
status.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt"> -- Mike</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
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<p class="MsoNormal">_______________________________________________<br>
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<p class="MsoNormal">_______________________________________________<br>
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