A certificate was corrupt, contained signatures that did not verify correctly, etc</p>

</dd>
<dt id="UC-unsupported-certificate">&quot;UC&quot;/&quot;unsupported certificate&quot;</dt>
<dd>

<p>A certificate was of an unsupported type.</p>

</dd>
<dt id="CR-certificate-revoked">&quot;CR&quot;/&quot;certificate revoked&quot;</dt>
<dd>

<p>A certificate was revoked by its signer.</p>

</dd>
<dt id="CE-certificate-expired">&quot;CE&quot;/&quot;certificate expired&quot;</dt>
<dd>

<p>A certificate has expired 