NID_ext_key_usage
{"extendedKeyUsage","X509v3 Extended Key Usage",NID_ext_key_usage,3,
.ext_nid = NID_ext_key_usage,
NID_ext_key_usage, /* 126 */
if ((extusage = X509_get_ext_d2i(x, NID_ext_key_usage, &i, NULL))) {
i_ext = X509_get_ext_by_NID((X509 *) x, NID_ext_key_usage, -1);