thm and the other representing a digest algorithm to be used in conjunction with it. <i>signid</i> represents the NID for the composite &quot;Signature Algorithm&quot;, <i>dig_id</i> is the NID for the digest algorithm and <i>pkey_id</i> is the NID for the underlying signature algorithm. As there are signature algorithms that do not require a digest, NID_undef is a valid <i>dig_id</i>.</p>

<p>OBJ_cleanup() releases any resources allocated by creating new objects.</p>

<h1 id="NOTES">NOTES</h1>

<p>Objects 