dify the operation.</p>

<p>CMS_SignedData_verify() is like CMS_verify() except that it operates on <b>CMS SignedData</b> input in the <i>sd</i> argument, it has some additional parameters described next, and on success it returns the verified content as a memory BIO. The optional <i>extra</i> parameter may be used to provide untrusted CA certificates that may be helpful for chain building in certificate validation. This list of certificates must not contain duplicates. The optional <i>crls</i> parameter ma