krb5_db_set_mkey
ret = krb5_db_set_mkey(hctx, &((kadm5_server_handle_t)global_server_handle)->master_keyblock);
krb5_db_set_mkey(kdc_context, &kdc_active_realm->realm_mkey);
if ((kret = krb5_db_set_mkey(rdp->realm_context, &rdp->realm_mkey))) {
krb5_error_code krb5_db_set_mkey ( krb5_context context,