ceremonyclient/node/consensus/ceremony/peer_messaging.go

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package ceremony
import (
"bytes"
"time"
"github.com/pkg/errors"
"go.uber.org/zap"
"golang.org/x/crypto/sha3"
"google.golang.org/protobuf/proto"
"google.golang.org/protobuf/types/known/anypb"
"source.quilibrium.com/quilibrium/monorepo/go-libp2p-blossomsub/pb"
"source.quilibrium.com/quilibrium/monorepo/nekryptology/pkg/core/curves"
qcrypto "source.quilibrium.com/quilibrium/monorepo/node/crypto"
"source.quilibrium.com/quilibrium/monorepo/node/protobufs"
"source.quilibrium.com/quilibrium/monorepo/node/store"
"source.quilibrium.com/quilibrium/monorepo/node/tries"
)
func (e *CeremonyDataClockConsensusEngine) handleSync(
message *pb.Message,
) error {
e.logger.Debug(
"received message",
zap.Binary("data", message.Data),
zap.Binary("from", message.From),
zap.Binary("signature", message.Signature),
)
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if bytes.Equal(message.From, e.pubSub.GetPeerID()) {
return nil
}
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msg := &protobufs.Message{}
if err := proto.Unmarshal(message.Data, msg); err != nil {
return errors.Wrap(err, "handle sync")
}
any := &anypb.Any{}
if err := proto.Unmarshal(msg.Payload, any); err != nil {
return errors.Wrap(err, "handle sync")
}
switch any.TypeUrl {
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case protobufs.ClockFrameType:
if err := e.handleClockFrameData(
message.From,
msg.Address,
any,
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true,
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); err != nil {
return errors.Wrap(err, "handle sync")
}
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case protobufs.ClockFramesResponseType:
if err := e.handleClockFramesResponse(
message.From,
msg.Address,
any,
); err != nil {
return errors.Wrap(err, "handle sync")
}
case protobufs.ClockFramesRequestType:
if err := e.handleClockFramesRequest(
message.From,
msg.Address,
any,
); err != nil {
return errors.Wrap(err, "handle sync")
}
case protobufs.ProvingKeyAnnouncementType:
if err := e.handleProvingKey(
message.From,
msg.Address,
any,
); err != nil {
return errors.Wrap(err, "handle sync")
}
case protobufs.KeyBundleAnnouncementType:
if err := e.handleKeyBundle(
message.From,
msg.Address,
any,
); err != nil {
return errors.Wrap(err, "handle sync")
}
}
return nil
}
func (e *CeremonyDataClockConsensusEngine) handleClockFramesResponse(
peerID []byte,
address []byte,
any *anypb.Any,
) error {
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if bytes.Equal(peerID, e.pubSub.GetPeerID()) {
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return nil
}
if !bytes.Equal(peerID, e.syncingTarget) {
e.logger.Warn(
"received clock frames response from unexpected target",
zap.Binary("peer_id", peerID),
zap.Binary("expected_peer_id", e.syncingTarget),
)
return nil
}
e.syncingStatus = SyncStatusSynchronizing
defer func() { e.syncingStatus = SyncStatusNotSyncing }()
response := &protobufs.ClockFramesResponse{}
if err := any.UnmarshalTo(response); err != nil {
return errors.Wrap(err, "handle clock frames response")
}
trieCopyBytes, err := e.frameProverTrie.Serialize()
if err != nil {
return errors.Wrap(err, "handle clock frames response")
}
trieCopy := &tries.RollingFrecencyCritbitTrie{}
if err = trieCopy.Deserialize(trieCopyBytes); err != nil {
return errors.Wrap(err, "handle clock frames response")
}
for _, frame := range response.ClockFrames {
prover, err := frame.GetAddress()
if err != nil {
return errors.Wrap(err, "handle clock frames response")
}
earliestFrame, _, count := trieCopy.Get(prover)
if count == 0 || earliestFrame >= frame.FrameNumber {
return errors.Wrap(
errors.New("prover not in trie"),
"handle clock frame response",
)
}
e.logger.Info(
"processing clock frame",
zap.Binary("sender_address", address),
zap.Binary("prover_address", prover),
zap.Binary("filter", frame.Filter),
zap.Uint64("frame_number", frame.FrameNumber),
)
if err := frame.VerifyDataClockFrame(); err != nil {
e.logger.Error("could not verify clock frame", zap.Error(err))
return errors.Wrap(err, "handle clock frame response")
}
aggregateCommitments := []curves.PairingPoint{}
for i := 0; i < (len(frame.Input)-516)/74; i++ {
c, err := curves.BLS48581G1().NewGeneratorPoint().FromAffineCompressed(
frame.Input[516+(i*74) : 516+(i*74)+74],
)
if err != nil {
e.logger.Error("could not verify clock frame", zap.Error(err))
return errors.Wrap(err, "handle clock frame response")
}
aggregateCommitments = append(
aggregateCommitments,
c.(curves.PairingPoint),
)
}
for i, proof := range frame.AggregateProofs {
aggregatePoly := [][]curves.PairingScalar{}
commitments := []curves.PairingPoint{}
for _, commit := range proof.GetInclusionCommitments() {
switch commit.TypeUrl {
case protobufs.IntrinsicExecutionOutputType:
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e.logger.Debug("confirming inclusion in aggregate")
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digest := sha3.NewShake256()
_, err := digest.Write(commit.Data)
if err != nil {
e.logger.Error(
"error converting key bundle to polynomial",
zap.Error(err),
)
return errors.Wrap(err, "handle clock frame response")
}
expand := make([]byte, 1024)
_, err = digest.Read(expand)
if err != nil {
e.logger.Error(
"error converting key bundle to polynomial",
zap.Error(err),
)
return errors.Wrap(err, "handle clock frame response")
}
poly, err := e.prover.BytesToPolynomial(expand)
if err != nil {
e.logger.Error(
"error converting key bundle to polynomial",
zap.Error(err),
)
return errors.Wrap(err, "handle clock frame response")
}
evalPoly, err := qcrypto.FFT(
poly,
*curves.BLS48581(
curves.BLS48581G1().NewGeneratorPoint(),
),
16,
false,
)
if err != nil {
e.logger.Error(
"error performing fast fourier transform on key bundle",
zap.Error(err),
)
return errors.Wrap(err, "handle clock frame response")
}
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e.logger.Debug(
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"created fft of polynomial",
zap.Int("poly_size", len(evalPoly)),
)
aggregatePoly = append(aggregatePoly, evalPoly)
c, err := curves.BLS48581G1().NewGeneratorPoint().FromAffineCompressed(
commit.Commitment,
)
if err != nil {
e.logger.Error("could not verify clock frame", zap.Error(err))
return errors.Wrap(err, "handle clock frame data")
}
commitments = append(commitments, c.(curves.PairingPoint))
default:
poly, err := e.prover.BytesToPolynomial(commit.Data)
if err != nil {
e.logger.Error(
"error converting key bundle to polynomial",
zap.Error(err),
)
return errors.Wrap(err, "handle clock frame response")
}
for i := 0; i < 128-len(poly); i++ {
poly = append(
poly,
curves.BLS48581G1().Scalar.Zero().(curves.PairingScalar),
)
}
evalPoly, err := qcrypto.FFT(
poly,
*curves.BLS48581(
curves.BLS48581G1().NewGeneratorPoint(),
),
128,
false,
)
if err != nil {
e.logger.Error(
"error performing fast fourier transform on key bundle",
zap.Error(err),
)
return errors.Wrap(err, "handle clock frame response")
}
aggregatePoly = append(aggregatePoly, evalPoly)
c, err := curves.BLS48581G1().NewGeneratorPoint().FromAffineCompressed(
commit.Commitment,
)
if err != nil {
e.logger.Error("could not verify clock frame", zap.Error(err))
return errors.Wrap(err, "handle clock frame response")
}
commitments = append(commitments, c.(curves.PairingPoint))
}
}
p, err := curves.BLS48581G1().NewGeneratorPoint().FromAffineCompressed(
proof.Proof,
)
if err != nil {
e.logger.Error("could not verify clock frame", zap.Error(err))
return errors.Wrap(err, "handle clock frame response")
}
result, err := e.prover.VerifyAggregateProof(
aggregatePoly,
commitments,
aggregateCommitments[i],
p.(curves.PairingPoint),
)
if err != nil {
e.logger.Error("could not verify clock frame", zap.Error(err))
return errors.Wrap(err, "handle clock frame response")
}
if !result {
e.logger.Error("could not verify clock frame", zap.Error(err))
return errors.Wrap(
errors.New("invalid proof"),
"handle clock frame response",
)
}
}
e.logger.Info(
"clock frame was valid",
zap.Binary("sender_address", address),
zap.Binary("prover_address", prover),
zap.Binary("filter", frame.Filter),
zap.Uint64("frame_number", frame.FrameNumber),
)
parentSelector, selector, distance, err :=
frame.GetParentSelectorAndDistance()
if err != nil {
return errors.Wrap(err, "handle clock frame data")
}
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e.logger.Debug(
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"difference between selector/discriminator",
zap.Binary("difference", distance.Bytes()),
)
txn, err := e.clockStore.NewTransaction()
if err != nil {
e.logger.Error("could not save candidate clock frame", zap.Error(err))
return errors.Wrap(err, "handle clock frame response")
}
if err := e.clockStore.PutCandidateDataClockFrame(
parentSelector.Bytes(),
distance.Bytes(),
selector.Bytes(),
frame,
txn,
); err != nil {
e.logger.Error("could not save candidate clock frame", zap.Error(err))
return errors.Wrap(err, "handle clock frame response")
}
if err := txn.Commit(); err != nil {
e.logger.Error("could not save candidate clock frame", zap.Error(err))
return errors.Wrap(err, "handle clock frame response")
}
if e.frame < frame.FrameNumber {
e.latestFrameReceived = frame.FrameNumber
e.lastFrameReceivedAt = time.Now().UTC()
}
trieCopy.Add(prover, frame.FrameNumber)
e.frameSeenProverTrie.Add(prover, frame.FrameNumber)
}
return nil
}
func (e *CeremonyDataClockConsensusEngine) handleProvingKeyRequest(
peerID []byte,
address []byte,
any *anypb.Any,
) error {
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if bytes.Equal(peerID, e.pubSub.GetPeerID()) {
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return nil
}
request := &protobufs.ProvingKeyRequest{}
if err := any.UnmarshalTo(request); err != nil {
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return nil
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}
if len(request.ProvingKeyBytes) == 0 {
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e.logger.Debug(
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"received proving key request for empty key",
zap.Binary("peer_id", peerID),
zap.Binary("address", address),
)
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return nil
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}
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e.pubSub.Subscribe(
append(append([]byte{}, e.filter...), peerID...),
e.handleSync,
true,
)
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e.logger.Debug(
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"received proving key request",
zap.Binary("peer_id", peerID),
zap.Binary("address", address),
zap.Binary("proving_key", request.ProvingKeyBytes),
)
var provingKey *protobufs.ProvingKeyAnnouncement
inclusion, err := e.keyStore.GetProvingKey(request.ProvingKeyBytes)
if err != nil {
if !errors.Is(err, store.ErrNotFound) {
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e.logger.Debug(
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"peer asked for proving key that returned error",
zap.Binary("peer_id", peerID),
zap.Binary("address", address),
zap.Binary("proving_key", request.ProvingKeyBytes),
)
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return nil
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}
provingKey, err = e.keyStore.GetStagedProvingKey(request.ProvingKeyBytes)
if !errors.Is(err, store.ErrNotFound) {
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e.logger.Debug(
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"peer asked for proving key that returned error",
zap.Binary("peer_id", peerID),
zap.Binary("address", address),
zap.Binary("proving_key", request.ProvingKeyBytes),
)
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return nil
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} else if err != nil {
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e.logger.Debug(
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"peer asked for unknown proving key",
zap.Binary("peer_id", peerID),
zap.Binary("address", address),
zap.Binary("proving_key", request.ProvingKeyBytes),
)
return nil
}
} else {
err := proto.Unmarshal(inclusion.Data, provingKey)
if err != nil {
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e.logger.Debug(
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"inclusion commitment could not be deserialized",
zap.Binary("peer_id", peerID),
zap.Binary("address", address),
zap.Binary("proving_key", request.ProvingKeyBytes),
)
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return nil
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}
}
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if err := e.publishMessage(
append(append([]byte{}, e.filter...), peerID...),
provingKey,
); err != nil {
return nil
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}
return nil
}
func (e *CeremonyDataClockConsensusEngine) handleClockFramesRequest(
peerID []byte,
address []byte,
any *anypb.Any,
) error {
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if bytes.Equal(peerID, e.pubSub.GetPeerID()) {
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return nil
}
request := &protobufs.ClockFramesRequest{}
if err := any.UnmarshalTo(request); err != nil {
return errors.Wrap(err, "handle clock frame request")
}
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e.pubSub.Subscribe(
append(append([]byte{}, e.filter...), peerID...),
e.handleSync,
true,
)
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e.logger.Info(
"received clock frame request",
zap.Binary("peer_id", peerID),
zap.Binary("address", address),
zap.Uint64("from_frame_number", request.FromFrameNumber),
zap.Uint64("to_frame_number", request.ToFrameNumber),
)
from := request.FromFrameNumber
base, _, err := e.clockStore.GetDataClockFrame(
request.Filter,
from,
)
if err != nil {
if !errors.Is(err, store.ErrNotFound) {
e.logger.Error(
"peer asked for frame that returned error",
zap.Binary("peer_id", peerID),
zap.Binary("address", address),
zap.Uint64("frame_number", request.FromFrameNumber),
)
return errors.Wrap(err, "handle clock frame request")
} else {
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e.logger.Debug(
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"peer asked for undiscovered frame",
zap.Binary("peer_id", peerID),
zap.Binary("address", address),
zap.Uint64("frame_number", request.FromFrameNumber),
)
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if err = e.publishMessage(
append(append([]byte{}, e.filter...), peerID...),
&protobufs.ClockFramesResponse{
Filter: request.Filter,
FromFrameNumber: 0,
ToFrameNumber: 0,
ClockFrames: []*protobufs.ClockFrame{},
},
); err != nil {
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return errors.Wrap(err, "handle clock frame request")
}
return nil
}
}
to := request.ToFrameNumber
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if to == 0 || to-request.FromFrameNumber > 32 {
to = request.FromFrameNumber + 31
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}
set := []*protobufs.ClockFrame{base}
noMoreFinalized := false
searchSpan := []*protobufs.ClockFrame{base}
currentNumber := 1
for len(searchSpan) != 0 && from+uint64(currentNumber) <= to {
e.logger.Info(
"scanning frames to add to response",
zap.Binary("peer_id", peerID),
zap.Binary("address", address),
zap.Uint64("from", from),
zap.Uint64("to", to),
zap.Uint64("current_number", uint64(currentNumber)),
)
nextSpan := []*protobufs.ClockFrame{}
for _, s := range searchSpan {
selector, err := s.GetSelector()
if err != nil {
return errors.Wrap(err, "handle clock frame request")
}
if !noMoreFinalized {
frame, _, err := e.clockStore.GetDataClockFrame(
s.Filter,
s.FrameNumber+1,
)
if err != nil {
if errors.Is(err, store.ErrNotFound) {
noMoreFinalized = true
} else {
e.logger.Error(
"fetching clock frame produced error",
zap.Binary("peer_id", peerID),
zap.Binary("address", address),
zap.Uint64("frame_number", s.FrameNumber+1),
)
return errors.Wrap(err, "handle clock frame request")
}
} else {
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if err = e.publishMessage(
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append(append([]byte{}, e.filter...), peerID...),
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frame,
); err != nil {
return errors.Wrap(err, "handle clock frame request")
}
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nextSpan = append(nextSpan, frame)
set = append(set, frame)
}
}
if noMoreFinalized {
iter, err := e.clockStore.RangeCandidateDataClockFrames(
s.Filter,
selector.Bytes(),
s.FrameNumber+1,
)
if err != nil {
e.logger.Error(
"peer asked for frame that returned error while iterating",
zap.Binary("peer_id", peerID),
zap.Binary("address", address),
zap.Binary("parent_selector", s.ParentSelector),
zap.Uint64("frame_number", s.FrameNumber+1),
)
return errors.Wrap(err, "handle clock frame request")
}
for iter.First(); iter.Valid(); iter.Next() {
frame, err := iter.Value()
if err != nil {
e.logger.Error(
"peer asked for frame that returned error while getting value",
zap.Binary("peer_id", peerID),
zap.Binary("address", address),
zap.Binary("parent_selector", selector.Bytes()),
zap.Uint64("frame_number", s.FrameNumber+1),
)
return errors.Wrap(err, "handle clock frame request")
}
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if err = e.publishMessage(
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append(append([]byte{}, e.filter...), peerID...),
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frame,
); err != nil {
return errors.Wrap(err, "handle clock frame request")
}
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nextSpan = append(nextSpan, frame)
set = append(set, frame)
}
iter.Close()
}
}
currentNumber++
searchSpan = nextSpan
}
return nil
}