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    Justin,<br>
    <br>
    <div class="moz-cite-prefix">Am 13.11.2016 um 13:39 schrieb Justin
      Richer:<br>
    </div>
    <blockquote cite="mid:4372F560-F98E-491B-BEDD-B02A2671D96C@mit.edu"
      type="cite">
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      Torsten, I believe this is intended to be triggered by the
      tls_client_auth value specified in §3. <br>
    </blockquote>
    <br>
    in the token request?<br>
    <br>
    <blockquote cite="mid:4372F560-F98E-491B-BEDD-B02A2671D96C@mit.edu"
      type="cite">
      <div class=""><br class="">
      </div>
      <div class="">Nit on that section, the field name for the client
        metadata in RFC7591 is token_endpoint_auth_method, the
        _supported version is from the corresponding discovery document.</div>
      <div class=""><br class="">
      </div>
      <div class=""> — Justin</div>
      <div class=""><br class="">
      </div>
    </blockquote>
    Torsten.<br>
    <blockquote cite="mid:4372F560-F98E-491B-BEDD-B02A2671D96C@mit.edu"
      type="cite">
      <div class="">
        <div>
          <blockquote type="cite" class="">
            <div class="">On Nov 13, 2016, at 12:31 PM, Torsten
              Lodderstedt <<a moz-do-not-send="true"
                href="mailto:torsten@lodderstedt.net" class="">torsten@lodderstedt.net</a>>
              wrote:</div>
            <br class="Apple-interchange-newline">
            <div class="">
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              <div text="#000000" bgcolor="#FFFFFF" class=""> Hi John
                and Brian,<br class="">
                <br class="">
                thanks for writting this draft.<br class="">
                <br class="">
                One question: how does the AS determine the
                authentication method is TLS authentication? I think you
                assume this is defined by the client-specific policy,
                independent of whether the client is registered
                automatically or manually. Would you mind to explicitely
                state this in the draft?<br class="">
                <br class="">
                best regards,<br class="">
                Torsten.<br class="">
                <br class="">
                <div class="moz-cite-prefix">Am 11.10.2016 um 05:59
                  schrieb John Bradley:<br class="">
                </div>
                <blockquote
                  cite="mid:9CDE07EB-E5B4-43B2-B3C1-F12569CAB458@ve7jtb.com"
                  type="cite" class=""> At the request of the OpenID
                  Foundation Financial Services API Working group, Brian
                  Campbell and I have documented 
                  <div class="">mutual TLS client authentication.   This
                    is something that lots of people do in practice
                    though we have never had a spec for it.</div>
                  <div class=""><br class="">
                  </div>
                  <div class="">The Banks want to use it for some server
                    to server API use cases being driven by new open
                    banking regulation.</div>
                  <div class=""><br class="">
                  </div>
                  <div class="">The largest thing in the draft is the
                    IANA registration of “tls_client_auth” Token
                    Endpoint authentication method for use in
                    Registration and discovery.</div>
                  <div class=""><br class="">
                  </div>
                  <div class="">The trust model is intentionally left
                    open so that you could use a “common name” and a
                    restricted list of CA or a direct lookup of the
                    subject public key against a reregistered value,  or
                    something in between.</div>
                  <div class=""><br class="">
                  </div>
                  <div class="">I hope that this is non controversial
                    and the WG can adopt it quickly.</div>
                  <div class=""><br class="">
                  </div>
                  <div class="">Regards</div>
                  <div class="">John B.</div>
                  <div class=""><br class="">
                  </div>
                  <div class=""><br class="">
                  </div>
                  <div class=""><br class="">
                    <div class=""><br class="">
                      <blockquote type="cite" class="">
                        <div class="">Begin forwarded message:</div>
                        <br class="Apple-interchange-newline">
                        <div style="margin-top: 0px; margin-right: 0px;
                          margin-bottom: 0px; margin-left: 0px;"
                          class=""><span style="font-family:
                            -webkit-system-font, 'Helvetica Neue',
                            Helvetica, sans-serif;" class=""><b class="">From:
                            </b></span><span style="font-family:
                            -webkit-system-font, Helvetica Neue,
                            Helvetica, sans-serif;" class=""><a
                              moz-do-not-send="true"
                              class="moz-txt-link-abbreviated"
                              href="mailto:internet-drafts@ietf.org"><a class="moz-txt-link-abbreviated" href="mailto:internet-drafts@ietf.org">internet-drafts@ietf.org</a></a><br
                              class="">
                          </span></div>
                        <div style="margin-top: 0px; margin-right: 0px;
                          margin-bottom: 0px; margin-left: 0px;"
                          class=""><span style="font-family:
                            -webkit-system-font, 'Helvetica Neue',
                            Helvetica, sans-serif;" class=""><b class="">Subject:
                            </b></span><span style="font-family:
                            -webkit-system-font, Helvetica Neue,
                            Helvetica, sans-serif;" class=""><b class="">New
                              Version Notification for
                              draft-campbell-oauth-tls-client-auth-00.txt</b><br
                              class="">
                          </span></div>
                        <div style="margin-top: 0px; margin-right: 0px;
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                          class=""><span style="font-family:
                            -webkit-system-font, 'Helvetica Neue',
                            Helvetica, sans-serif;" class=""><b class="">Date:
                            </b></span><span style="font-family:
                            -webkit-system-font, Helvetica Neue,
                            Helvetica, sans-serif;" class="">October 10,
                            2016 at 5:44:39 PM GMT-3<br class="">
                          </span></div>
                        <div style="margin-top: 0px; margin-right: 0px;
                          margin-bottom: 0px; margin-left: 0px;"
                          class=""><span style="font-family:
                            -webkit-system-font, 'Helvetica Neue',
                            Helvetica, sans-serif;" class=""><b class="">To:
                            </b></span><span style="font-family:
                            -webkit-system-font, Helvetica Neue,
                            Helvetica, sans-serif;" class="">"Brian
                            Campbell" <<a moz-do-not-send="true"
                              class="moz-txt-link-abbreviated"
                              href="mailto:brian.d.campbell@gmail.com">brian.d.campbell@gmail.com</a>>,

                            "John Bradley" <<a moz-do-not-send="true"
                              href="mailto:ve7jtb@ve7jtb.com" class="">ve7jtb@ve7jtb.com</a>><br
                              class="">
                          </span></div>
                        <br class="">
                        <div class="">
                          <div class=""><br class="">
                            A new version of I-D,
                            draft-campbell-oauth-tls-client-auth-00.txt<br
                              class="">
                            has been successfully submitted by John
                            Bradley and posted to the<br class="">
                            IETF repository.<br class="">
                            <br class="">
                            Name:<span class="Apple-tab-span" style="white-space:pre">        </span><span class="Apple-tab-span" style="white-space:pre">    </span>draft-campbell-oauth-tls-client-auth<br
                              class="">
                            Revision:<span class="Apple-tab-span" style="white-space:pre">    </span>00<br
                              class="">
                            Title:<span class="Apple-tab-span" style="white-space:pre">       </span><span class="Apple-tab-span" style="white-space:pre">    </span>Mutual

                            X.509 Transport Layer Security (TLS)
                            Authentication for OAuth Clients<br class="">
                            Document date:<span class="Apple-tab-span" style="white-space:pre">       </span>2016-10-10<br
                              class="">
                            Group:<span class="Apple-tab-span" style="white-space:pre">       </span><span class="Apple-tab-span" style="white-space:pre">    </span>Individual

                            Submission<br class="">
                            Pages:<span class="Apple-tab-span" style="white-space:pre">       </span><span class="Apple-tab-span" style="white-space:pre">    </span>5<br
                              class="">
                            URL:            <a moz-do-not-send="true"
href="https://www.ietf.org/internet-drafts/draft-campbell-oauth-tls-client-auth-00.txt"
                              class="">https://www.ietf.org/internet-drafts/draft-campbell-oauth-tls-client-auth-00.txt</a><br
                              class="">
                            Status:         <a moz-do-not-send="true"
href="https://datatracker.ietf.org/doc/draft-campbell-oauth-tls-client-auth/"
                              class="">https://datatracker.ietf.org/doc/draft-campbell-oauth-tls-client-auth/</a><br
                              class="">
                            Htmlized:       <a moz-do-not-send="true"
href="https://tools.ietf.org/html/draft-campbell-oauth-tls-client-auth-00"
                              class="">https://tools.ietf.org/html/draft-campbell-oauth-tls-client-auth-00</a><br
                              class="">
                            <br class="">
                            <br class="">
                            Abstract:<br class="">
                              This document describes X.509 certificates
                            as OAuth client<br class="">
                              credentials using Transport Layer Security
                            (TLS) mutual<br class="">
                              authentication as a mechanism for client
                            authentication to the<br class="">
                              authorization server's token endpoint.<br
                              class="">
                            <br class="">
                            <br class="">
                            <br class="">
                            <br class="">
                            Please note that it may take a couple of
                            minutes from the time of submission<br
                              class="">
                            until the htmlized version and diff are
                            available at <a moz-do-not-send="true"
                              href="http://tools.ietf.org/" class="">tools.ietf.org</a>.<br
                              class="">
                            <br class="">
                            The IETF Secretariat<br class="">
                            <br class="">
                          </div>
                        </div>
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                  <br class="">
                  <pre class="" wrap="">_______________________________________________
OAuth mailing list
<a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:OAuth@ietf.org">OAuth@ietf.org</a>
<a moz-do-not-send="true" class="moz-txt-link-freetext" href="https://www.ietf.org/mailman/listinfo/oauth">https://www.ietf.org/mailman/listinfo/oauth</a>
</pre>
                </blockquote>
                <br class="">
              </div>
              _______________________________________________<br
                class="">
              OAuth mailing list<br class="">
              <a moz-do-not-send="true" href="mailto:OAuth@ietf.org"
                class="">OAuth@ietf.org</a><br class="">
              <a class="moz-txt-link-freetext" href="https://www.ietf.org/mailman/listinfo/oauth">https://www.ietf.org/mailman/listinfo/oauth</a><br class="">
            </div>
          </blockquote>
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