turn a constant array of descriptor <a href="../man3/OSSL_PARAM.html">OSSL_PARAM(3)</a> for data indicated by <i>selection</i>, that the OSSL_FUNC_keymgmt_export() callback can expect to receive. Either OSSL_FUNC_keymgmt_export_types() or OSSL_FUNC_keymgmt_export_types_ex(), must be implemented, if OSSL_FUNC_keymgmt_export_types_ex() is implemented, then it is preferred over OSSL_FUNC_keymgmt_export_types(). Providers that are supposed to be backward compatible with OpenSSL 3.0 or 3.1 must continue to imple