Exemplo n.º 1
0
func (jv *JVSS) initSecret(sid SID) error {

	// Initialise shared secret of given type if necessary
	if _, ok := jv.secrets[sid]; !ok {
		log.Lvl2(fmt.Sprintf("Node %d: Initialising %s shared secret", jv.Index(), sid))
		sec := &Secret{
			receiver: poly.NewReceiver(jv.keyPair.Suite, jv.info, jv.keyPair),
			deals:    make(map[int]*poly.Deal),
			sigs:     make(map[int]*poly.SchnorrPartialSig),
			numConfs: 0,
		}
		jv.secrets[sid] = sec
	}

	secret := jv.secrets[sid]

	// Initialise and broadcast our deal if necessary
	if len(secret.deals) == 0 {
		kp := config.NewKeyPair(jv.keyPair.Suite)
		deal := new(poly.Deal).ConstructDeal(kp, jv.keyPair, jv.info.T, jv.info.R, jv.pubKeys)
		log.Lvl2(fmt.Sprintf("Node %d: Initialising %v deal", jv.Index(), sid))
		secret.deals[jv.Index()] = deal
		db, _ := deal.MarshalBinary()
		msg := &SecInitMsg{
			Src:  jv.Index(),
			SID:  sid,
			Deal: db,
		}
		if err := jv.Broadcast(msg); err != nil {
			return err
		}
	}
	return nil
}
Exemplo n.º 2
0
func (jv *JVSS) initSecret(sid SID) error {
	if sid.IsLTSS() && jv.ltssInit {
		return errors.New("Only one longterm secret allowed per JVSS instance")
	}

	// Initialise shared secret of given type if necessary
	if sec, err := jv.secrets.secret(sid); sec == nil && err != nil {
		log.Lvlf4("Node %d: Initialising %s shared secret", jv.Index(),
			sid)
		sec := &secret{
			receiver:         poly.NewReceiver(jv.keyPair.Suite, jv.info, jv.keyPair),
			deals:            make(map[int]*poly.Deal),
			sigs:             make(map[int]*poly.SchnorrPartialSig),
			numLongtermConfs: 0,
		}
		jv.secrets.addSecret(sid, sec)
	}

	secret, err := jv.secrets.secret(sid)
	if err != nil { // this should never happen here
		log.Error(err)
		return err
	}

	// Initialise and broadcast our deal if necessary
	if len(secret.deals) == 0 {
		kp := config.NewKeyPair(jv.keyPair.Suite)
		deal := new(poly.Deal).ConstructDeal(kp, jv.keyPair, jv.info.T, jv.info.R, jv.pubKeys)
		log.Lvlf4("Node %d: Initialising %v deal", jv.Index(), sid)
		secret.deals[jv.Index()] = deal
		db, _ := deal.MarshalBinary()
		msg := &SecInitMsg{
			Src:  jv.Index(),
			SID:  sid,
			Deal: db,
		}
		if err := jv.Broadcast(msg); err != nil {
			log.Print(jv.Name(), "Error broadcast secInit:", err)
			return err
		}
	}
	return nil
}