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<p class="MsoNormal"><span style="color:#1F497D">></span>I think the SP is responsible for enforcing any check regardless, and most of
<span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">></span>the data available to it comes from the IdP. <span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Absolutely, it’s a basic point, but not necessarily obvious. I was just calling out the need to check in case it wasn’t obvious to the OP, especially given
that he can’t have the SP sign the request in this case (IdP-initiated requests only).
<o:p></o:p></span></p>
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<p class="MsoNormal">>In both these cases, you're relying on the IdP to accurately represent what has occurred,
<o:p></o:p></p>
<p class="MsoNormal">>no matter what "what" is, and you don't really have a good way of validating that beyond
<o:p></o:p></p>
<p class="MsoNormal">>trusting that specific IdP.<span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Yeah, the rest of my post was largely whining about the difficulty of validating via the assertion that a user authn interaction actually occurred in the real
world. :)<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">--- Eric<o:p></o:p></span></p>
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