func (jv *JVSS) handleSecInit(m WSecInitMsg) error {
msg := m.SecInitMsg
log.Lvl4(jv.Name(), jv.Index(), "Received SecInit from", m.TreeNode.Name())
// Initialise shared secret
if err := jv.initSecret(msg.SID); err != nil {
return err
}
// Unmarshal received deal
deal := new(poly.Deal).UnmarshalInit(jv.info.T, jv.info.R, jv.info.N, jv.keyPair.Suite)
if err := deal.UnmarshalBinary(msg.Deal); err != nil {
return err
}
// Buffer received deal for later
secret, err := jv.secrets.secret(msg.SID)
if err != nil {
return err
}
secret.deals[msg.Src] = deal
// Finalise shared secret
if err := jv.finaliseSecret(msg.SID); err != nil {
log.Error(jv.Index(), err)
return err
}
log.Lvl4("Finished handleSecInit", jv.Name(), msg.SID)
return nil
}
func (jv *JVSS) handleSecInit(m WSecInitMsg) error {
msg := m.SecInitMsg
// Initialise shared secret
if err := jv.initSecret(msg.SID); err != nil {
return err
}
// Unmarshal received deal
deal := new(poly.Deal).UnmarshalInit(jv.info.T, jv.info.R, jv.info.N, jv.keyPair.Suite)
if err := deal.UnmarshalBinary(msg.Deal); err != nil {
return err
}
// Buffer received deal for later
secret, ok := jv.secrets[msg.SID]
if !ok {
return fmt.Errorf("Error, shared secret does not exist")
}
secret.deals[msg.Src] = deal
// Finalise shared secret
if err := jv.finaliseSecret(msg.SID); err != nil {
return err
}
return nil
}
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
}
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
}
