// Copyright 2019 The dexon-consensus Authors
// This file is part of the dexon-consensus library.
//
// The dexon-consensus library is free software: you can redistribute it
// and/or modify it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation, either version 3 of the License,
// or (at your option) any later version.
//
// The dexon-consensus library is distributed in the hope that it will be
// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
// General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the dexon-consensus library. If not, see
// <http://www.gnu.org/licenses/>.
package utils
import (
"testing"
"github.com/stretchr/testify/suite"
"github.com/dexon-foundation/dexon-consensus/common"
"github.com/dexon-foundation/dexon-consensus/core/crypto"
"github.com/dexon-foundation/dexon-consensus/core/crypto/dkg"
"github.com/dexon-foundation/dexon-consensus/core/crypto/ecdsa"
"github.com/dexon-foundation/dexon-consensus/core/types"
typesDKG "github.com/dexon-foundation/dexon-consensus/core/types/dkg"
)
type PenaltyHelperTestSuite struct {
suite.Suite
}
func (s *PenaltyHelperTestSuite) TestDKGComplaint() {
signComplaint := func(prv crypto.PrivateKey, complaint *typesDKG.Complaint) {
var err error
complaint.Signature, err = prv.Sign(hashDKGComplaint(complaint))
s.Require().NoError(err)
}
prv1, err := ecdsa.NewPrivateKey()
s.Require().NoError(err)
nID1 := types.NewNodeID(prv1.PublicKey())
prv2, err := ecdsa.NewPrivateKey()
s.Require().NoError(err)
nID2 := types.NewNodeID(prv2.PublicKey())
prvShares, pubShares := dkg.NewPrivateKeyShares(3)
mpk := &typesDKG.MasterPublicKey{
ProposerID: nID1,
DKGID: typesDKG.NewID(nID1),
PublicKeyShares: *pubShares,
}
mpk.Signature, err = prv1.Sign(hashDKGMasterPublicKey(mpk))
s.Require().NoError(err)
// NackComplaint should not be penalized.
complaint := &typesDKG.Complaint{
ProposerID: nID2,
}
signComplaint(prv2, complaint)
s.Require().True(complaint.IsNack())
ok, err := NeedPenaltyDKGPrivateShare(complaint, mpk)
s.Require().NoError(err)
s.False(ok)
// Correct privateShare should not be penalized.
prvShares.SetParticipants(dkg.IDs{typesDKG.NewID(nID1), typesDKG.NewID(nID2)})
share, exist := prvShares.Share(typesDKG.NewID(nID2))
s.Require().True(exist)
prvShare := &typesDKG.PrivateShare{
ProposerID: nID1,
ReceiverID: nID2,
PrivateShare: *share,
}
prvShare.Signature, err = prv1.Sign(hashDKGPrivateShare(prvShare))
s.Require().NoError(err)
complaint.PrivateShare = *prvShare
signComplaint(prv2, complaint)
ok, err = NeedPenaltyDKGPrivateShare(complaint, mpk)
s.Require().NoError(err)
s.False(ok)
// Penalize incorrect privateShare.
share, exist = prvShares.Share(typesDKG.NewID(nID1))
s.Require().True(exist)
prvShare.PrivateShare = *share
prvShare.Signature, err = prv1.Sign(hashDKGPrivateShare(prvShare))
s.Require().NoError(err)
complaint.PrivateShare = *prvShare
signComplaint(prv2, complaint)
ok, err = NeedPenaltyDKGPrivateShare(complaint, mpk)
s.Require().NoError(err)
s.True(ok)
// Should not penalize if mpk is incorrect.
mpk.Round++
ok, err = NeedPenaltyDKGPrivateShare(complaint, mpk)
s.Equal(ErrInvalidDKGMasterPublicKey, err)
// Should not penalize if mpk's proposer not match with prvShares'.
mpk.Round--
mpk.ProposerID = nID2
mpk.Signature, err = prv1.Sign(hashDKGMasterPublicKey(mpk))
s.Require().NoError(err)
ok, err = NeedPenaltyDKGPrivateShare(complaint, mpk)
s.Require().NoError(err)
s.False(ok)
}
func (s *PenaltyHelperTestSuite) TestForkVote() {
prv1, err := ecdsa.NewPrivateKey()
s.Require().NoError(err)
vote1 := types.NewVote(types.VoteCom, common.NewRandomHash(), uint64(0))
vote1.ProposerID = types.NewNodeID(prv1.PublicKey())
vote2 := vote1.Clone()
for vote2.BlockHash == vote1.BlockHash {
vote2.BlockHash = common.NewRandomHash()
}
vote1.Signature, err = prv1.Sign(hashVote(vote1))
s.Require().NoError(err)
vote2.Signature, err = prv1.Sign(hashVote(vote2))
s.Require().NoError(err)
ok, err := NeedPenaltyForkVote(vote1, vote2)
s.Require().NoError(err)
s.True(ok)
// Invalid signature should not be penalized.
vote2.VoteHeader.Period++
ok, err = NeedPenaltyForkVote(vote1, vote2)
s.Require().NoError(err)
s.False(ok)
// Period not matched.
vote2.Signature, err = prv1.Sign(hashVote(vote2))
s.Require().NoError(err)
ok, err = NeedPenaltyForkVote(vote1, vote2)
s.Require().NoError(err)
s.False(ok)
// Proposer not matched.
vote2 = vote1.Clone()
for vote2.BlockHash == vote1.BlockHash {
vote2.BlockHash = common.NewRandomHash()
}
prv2, err := ecdsa.NewPrivateKey()
s.Require().NoError(err)
vote2.ProposerID = types.NewNodeID(prv2.PublicKey())
vote2.Signature, err = prv2.Sign(hashVote(vote2))
s.Require().NoError(err)
ok, err = NeedPenaltyForkVote(vote1, vote2)
s.Require().NoError(err)
s.False(ok)
}
func (s *PenaltyHelperTestSuite) TestForkBlock() {
hashBlock := func(block *types.Block) common.Hash {
block.PayloadHash = crypto.Keccak256Hash(block.Payload)
var err error
block.Hash, err = HashBlock(block)
s.Require().NoError(err)
return block.Hash
}
prv1, err := ecdsa.NewPrivateKey()
s.Require().NoError(err)
block1 := &types.Block{
ProposerID: types.NewNodeID(prv1.PublicKey()),
ParentHash: common.NewRandomHash(),
}
block2 := block1.Clone()
for block2.ParentHash == block1.ParentHash {
block2.ParentHash = common.NewRandomHash()
}
block1.Signature, err = prv1.Sign(hashBlock(block1))
s.Require().NoError(err)
block2.Signature, err = prv1.Sign(hashBlock(block2))
s.Require().NoError(err)
ok, err := NeedPenaltyForkBlock(block1, block2)
s.Require().NoError(err)
s.True(ok)
// Invalid signature should not be penalized.
block2.ParentHash[0]++
ok, err = NeedPenaltyForkBlock(block1, block2)
s.Require().NoError(err)
s.False(ok)
// Position not matched.
block2.Position.Height++
block2.Signature, err = prv1.Sign(hashBlock(block2))
s.Require().NoError(err)
ok, err = NeedPenaltyForkBlock(block1, block2)
s.Require().NoError(err)
s.False(ok)
// Proposer not matched.
block2 = block1.Clone()
for block2.ParentHash == block1.ParentHash {
block2.ParentHash = common.NewRandomHash()
}
prv2, err := ecdsa.NewPrivateKey()
s.Require().NoError(err)
block2.ProposerID = types.NewNodeID(prv2.PublicKey())
block2.Signature, err = prv2.Sign(hashBlock(block2))
s.Require().NoError(err)
ok, err = NeedPenaltyForkBlock(block1, block2)
s.Require().NoError(err)
s.False(ok)
}
func TestPenaltyHelper(t *testing.T) {
suite.Run(t, new(PenaltyHelperTestSuite))
}
