ceremonyclient/node/execution/ceremony/application/ceremony_application_open.go

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package application
import (
"bytes"
"github.com/pkg/errors"
"source.quilibrium.com/quilibrium/monorepo/nekryptology/pkg/core/curves"
"source.quilibrium.com/quilibrium/monorepo/node/protobufs"
)
func (a *CeremonyApplication) applyLobbyJoin(
join *protobufs.CeremonyLobbyJoin,
) error {
signature := join.GetPublicKeySignatureEd448()
if signature == nil {
return errors.Wrap(errors.New("signature is nil"), "apply lobby join")
}
if join.IdentityKey == nil || join.IdentityKey.KeyValue == nil {
return errors.Wrap(errors.New("identity key is nil"), "apply lobby join")
}
if join.SignedPreKey == nil || join.SignedPreKey.KeyValue == nil {
return errors.Wrap(errors.New("signed prekey is nil"), "apply lobby join")
}
if _, err := curves.ED448().Point.FromAffineCompressed(
join.IdentityKey.KeyValue,
); err != nil {
return errors.Wrap(err, "apply lobby join")
}
if _, err := curves.ED448().Point.FromAffineCompressed(
join.SignedPreKey.KeyValue,
); err != nil {
return errors.Wrap(err, "apply lobby join")
}
if err := join.VerifySignature(); err != nil {
return errors.Wrap(err, "apply lobby join")
}
if len(a.LobbyJoins) == 256 {
return nil
}
for _, p := range a.LobbyJoins {
if bytes.Equal(
p.PublicKeySignatureEd448.PublicKey.KeyValue,
signature.PublicKey.KeyValue,
) {
return nil
}
}
prepend := false
nextRoundPreferredParticipants := []*protobufs.Ed448PublicKey{}
for _, p := range a.NextRoundPreferredParticipants {
p := p
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if !bytes.Equal(p.KeyValue, signature.PublicKey.KeyValue) {
nextRoundPreferredParticipants = append(
nextRoundPreferredParticipants,
p,
)
}
}
if len(a.NextRoundPreferredParticipants) !=
len(nextRoundPreferredParticipants) {
prepend = true
}
a.NextRoundPreferredParticipants = nextRoundPreferredParticipants
if prepend {
a.LobbyJoins = append(
append([]*protobufs.CeremonyLobbyJoin{}, join),
a.LobbyJoins...,
)
} else {
a.LobbyJoins = append(a.LobbyJoins, join)
}
return nil
}
func (a *CeremonyApplication) finalizeParticipantSet() error {
power := uint64(1)
for uint64(len(a.LobbyJoins)) > power {
power = power << 1
}
if power != uint64(len(a.LobbyJoins)) {
power = power >> 1
}
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a.ActiveParticipants = []*protobufs.CeremonyLobbyJoin{}
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for i := 0; i < int(power); i++ {
a.ActiveParticipants = append(
a.ActiveParticipants,
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a.LobbyJoins[i],
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)
}
return nil
}