<div dir="ltr"><div><div class="gmail_signature">Hi all. I'm trying to unravel a weird use case and could use a hand. My team supports applications that connect (via various service providers) to an identity provider run by our university. The basic problem is that the user data being returned from the university's system doesn't incorporate information specific to our organization: attaching details about internal groups a person is a part of, for example.</div></div><div class="gmail_signature"><br></div><div class="gmail_signature">The theory was that there was a way to configure an identity provider to pass requests through to the main IdP, then once a user has been authenticated, append extra attributes to the response before it's sent back to the application. We would then configure our applications to use our "proxy" IdP, leaving them with the "main" response plus our extra decorations. I've been told this is possible (possibly using the RemoteUserAuthnConfiguration flow?), but I haven't been able to find any indication in the documentation that this is an intended use of Shibboleth IdP. In case it's relevant, I'm told making any custom modifications to the main IdP is not an option.</div><div class="gmail_signature"><br></div><div class="gmail_signature">Has anyone given this a try? This is personally my first real foray into this arena, and I can't tell if "special information attached to some requests but not others" is a logical use of <span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">federated identity management or an egregious violation of it. Thanks for your time.</span></div><div class="gmail_signature"><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><br></span></div><div class="gmail_signature"><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">Regards,</span></div><div class="gmail_signature"><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">Rich</span></div>
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