// NewBFTCoSiProtocol returns a new bftcosi struct
func NewBFTCoSiProtocol(n *sda.TreeNodeInstance, verify VerificationFunction) (*ProtocolBFTCoSi, error) {
// initialize the bftcosi node/protocol-instance
bft := &ProtocolBFTCoSi{
TreeNodeInstance: n,
suite: n.Suite(),
prepare: cosi.NewCosi(n.Suite(), n.Private()),
commit: cosi.NewCosi(n.Suite(), n.Private()),
verifyChan: make(chan bool),
doneProcessing: make(chan bool, 2),
doneSigning: make(chan bool, 1),
verificationFun: verify,
AggregatedPublic: n.Roster().Aggregate,
threshold: int(2.0 * math.Ceil(float64(len(n.Tree().List()))/3.0)),
}
// register channels
if err := n.RegisterChannel(&bft.announceChan); err != nil {
return nil, err
}
if err := n.RegisterChannel(&bft.commitChan); err != nil {
return nil, err
}
if err := n.RegisterChannel(&bft.challengePrepareChan); err != nil {
return nil, err
}
if err := n.RegisterChannel(&bft.challengeCommitChan); err != nil {
return nil, err
}
if err := n.RegisterChannel(&bft.responseChan); err != nil {
return nil, err
}
n.OnDoneCallback(bft.nodeDone)
return bft, nil
}
