krb5_decrypt_ticket
ret = krb5_decrypt_ticket(context, t, &uukey->key, &adtkt, 0);
ret = krb5_decrypt_ticket(context, t, &clientkey->key, &adtkt, 0);
krb5_decrypt_ticket (
ret = krb5_decrypt_ticket(context, &ap_req->ticket,
ret = krb5_decrypt_ticket(context, &ap_req->ticket,