C_keymgmt_gettable_params() should return a constant array of descriptor <a href="../man3/OSSL_PARAM.html">OSSL_PARAM(3)</a>, for parameters that OSSL_FUNC_keymgmt_get_params() can handle.</p>

<p>If OSSL_FUNC_keymgmt_gettable_params() is present, OSSL_FUNC_keymgmt_get_params() must also be present, and vice versa.</p>

<p>OSSL_FUNC_keymgmt_set_params() should update information data associated with the given <i>keydata</i>, see <a href="#Common-Information-Parameters">&quot;Common Information Parameters&qu