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The Multi-Context Broker (MCB) working group has released a set of
documents to help Shibboleth deployers to support multifactor
authentication and assurance profiles in IdP version 3.x. These
include a description of the Multi-Context Broker Model for
orchestrating among multiple authentication methods and
authentication contexts, as well as recipes for implementing the
Model in IdP version 3.x. The documents are available at <a
moz-do-not-send="true" class="moz-txt-link-freetext"
href="https://wiki.shibboleth.net/confluence/x/jwBSAQ"><a class="moz-txt-link-freetext" href="https://wiki.shibboleth.net/confluence/x/jwBSAQ">https://wiki.shibboleth.net/confluence/x/jwBSAQ</a></a>.<br>
<p><u>Background</u><br>
</p>
<p>The Multi-Context Broker plugin for Shibboleth IdP version 2.x
was a great success by providing an implementation platform for
early adopters of multifactor authentication and the InCommon
Assurance Program, about a year ahead of the release of Shibboleth
IdP version 3.x. Even more important:</p>
<ul>
<li>It has raised the awareness of its capabilities throughout the
community, putting those capabilities into the planning horizon
of many universities and service providers ranging from CILogon
to WorkDay.</li>
<li>It has educated the implementation of these capabilities in
Shibboleth v3.</li>
</ul>
As we knew at the start, however, the MCB would not be directly
transferable to Shibboleth v3. The functionality is native in IdP
version 3, albeit requiring different configuration, so we have
chosen not to recreate the MCB code for IdP version 3, choosing
instead to document the new configuration.<br>
<br>
David Walker<br>
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