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<div class="moz-cite-prefix">On 4/18/19 1:37 PM, Steven Carmody
wrote:<br>
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<blockquote type="cite"
cite="mid:f6ee4d14-c78f-af4b-5dca-c79b4ed255bc@brown.edu"><br>
<br>
I take that to mean that the authN Request was signed, and that
the IDP is not relying on the SP creating the TLS tunnel using the
SPs private key -- am I right about that ?
<br>
</blockquote>
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<p>Yes, there is a Redirect binding signature, and the logs
indicated it validated successfully. <br>
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<p>This is a front-channel binding request, so there of course isn't
any direct TLS channel between the SP and the IdP, b/c the browser
is sitting in the middle of the exchange. So this can't be SP
doing clientTLS to the IdP, etc.<br>
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<blockquote type="cite"
cite="mid:f6ee4d14-c78f-af4b-5dca-c79b4ed255bc@brown.edu">
<br>
Here's the actual request sent by the SP:
<br>
</blockquote>
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<p>The SigAlg and Signature query params there indicate it is signed
via the Redirect binding, with RSA-SHA256.<br>
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