s of security is defined in SP800-57.</p>

</dd>
<dt id="mandatory-digest-OSSL_PKEY_PARAM_MANDATORY_DIGEST-UTF8-string">&quot;mandatory-digest&quot; (<b>OSSL_PKEY_PARAM_MANDATORY_DIGEST</b>) &lt;UTF8 string&gt;</dt>
<dd>

<p>If there is a mandatory digest for performing a signature operation with keys from this keymgmt, this parameter should get its name as value.</p>

<p>When EVP_PKEY_get_default_digest_name() queries this parameter and it&#39;s filled in by the implementation, its return value will be 2.<