EVP_SKEYMGMT_is_a
if (select_name != NULL && !EVP_SKEYMGMT_is_a(k, select_name))
return EVP_SKEYMGMT_is_a(skey->skeymgmt, name);
int EVP_SKEYMGMT_is_a(const EVP_SKEYMGMT *keymgmt, const char *name);