<div class="content" name="ContentValidationCert" uuid="d7111e8f-eb9e-4bf4-9a5b-a15f7baaba50"><p>The IUpdateService::ContentValidationCert (opnum 9) method
retrieves a cryptographic hash of the certificate used to sign content
delivered by this <span><a href="750e8355-177c-4a51-bab8-927c813819c8#gt_1692cfd4-4b1d-4566-9820-8171465bbc4b" data-linktype="relative-path">update service</a></span>.</p><dl>
<dd>
<div><pre> HRESULT ContentValidationCert(
   [out, retval] VARIANT* retval
 );
</pre></div>
</dd></dl><p><b>retval: </b>An array of bytes containing the hash.
The <b>vt</b> member MUST be set to VT_ARRAY | VT_UI1, as specified in <span><a href="../ms-oaut/bbb05720-f724-45c7-8d17-f83c3d1a3961" data-linktype="relative-path">[MS-OAUT]</a></span>
section <span><a href="../ms-oaut/3fe7db9f-5803-4dc4-9d14-5425d3f5461f" data-linktype="relative-path">2.2.7</a></span>,
and the <b>parray</b> member MUST contain a pointer to the array.</p><p><b>Return Values: </b>The method MUST return
information in an <b>HRESULT</b> data structure. The severity bit in the
structure identifies the following conditions:</p><ul><li><p><span><span>  </span></span>If
the severity bit is set to 0, the method completed successfully.</p>
</li><li><p><span><span>  </span></span>If
the severity bit is set to 1, the method failed and encountered a fatal error.</p>
</li></ul><p><b>Exceptions Thrown:</b> No exceptions are thrown beyond
those thrown by the underlying RPC protocol <span><a href="../ms-rpce/290c38b1-92fe-4229-91e6-4fc376610c15" data-linktype="relative-path">[MS-RPCE]</a></span>.</p><p>This method SHOULD return the value of the <b>ContentValidationCert</b>
ADM element. </p></div>