be read from. <i>nconf</i> will typically come from a config file whereas <i>cnf</i> is obtained from an <b>X509V3_CTX</b> structure, which will typically be used by X509 v3 certificate extension functions. <i>cnf</i> or <i>nconf</i> can be set to NULL if no additional configuration will be used.</p>

<h1 id="GENERATION-STRING-FORMAT">GENERATION STRING FORMAT</h1>

<p>The actual data encoded is determined by the string <i>str</i> and the configuration information. The general format of the string is:</p>

<