se parameters work as described in <a href="../man3/EVP_KDF.html">&quot;PARAMETERS&quot; in EVP_KDF(3)</a>.</p>

</dd>
<dt id="key-OSSL_KDF_PARAM_SECRET-octet-string">&quot;key&quot; (<b>OSSL_KDF_PARAM_SECRET</b>) &lt;octet string&gt;</dt>
<dd>

<p>This parameter set the shared secret that is used for key derivation.</p>

</dd>
<dt id="info-OSSL_KDF_PARAM_INFO-octet-string">&quot;info&quot; (<b>OSSL_KDF_PARAM_INFO</b>) &lt;octet string&gt;</dt>
<dd>

<p>This parameter sets an optional value for fixedinfo, a