Append ExtraVanity to the beginning of the marshaled extra data

command/genesis/polybft_params.go

@@ -324,7 +324,7 @@ func generateExtraDataPolyBft(validators []*polybft.ValidatorMetadata) ([]byte,
 
 	extra := polybft.Extra{Validators: delta, Checkpoint: &polybft.CheckpointData{}}
 
-	return append(make([]byte, polybft.ExtraVanity), extra.MarshalRLPTo(nil)...), nil
+	return extra.MarshalRLPTo(nil), nil
 }
 
 func stringSliceToAddressSlice(addrs []string) []types.Address {

consensus/polybft/checkpoint_manager_test.go

@@ -18,7 +18,6 @@ import (
 	"github.com/stretchr/testify/require"
 	"github.com/umbracle/ethgo"
 
-	"github.com/0xPolygon/polygon-edge/consensus/ibft/signer"
 	"github.com/0xPolygon/polygon-edge/consensus/polybft/bitmap"
 	bls "github.com/0xPolygon/polygon-edge/consensus/polybft/signer"
 	"github.com/0xPolygon/polygon-edge/consensus/polybft/wallet"
@@ -80,7 +79,7 @@ func TestCheckpointManager_SubmitCheckpoint(t *testing.T) {
 			extra.Checkpoint = checkpoint
 			extra.Committed = &Signature{Bitmap: bitmap, AggregatedSignature: signature}
 			header = &types.Header{
-				ExtraData: append(make([]byte, ExtraVanity), extra.MarshalRLPTo(nil)...),
+				ExtraData: extra.MarshalRLPTo(nil),
 			}
 			epochNumber++
 		} else {
@@ -152,7 +151,7 @@ func TestCheckpointManager_abiEncodeCheckpointBlock(t *testing.T) {
 		AggregatedSignature: aggSignature,
 		Bitmap:              bmp,
 	}
-	header.ExtraData = append(make([]byte, signer.IstanbulExtraVanity), extra.MarshalRLPTo(nil)...)
+	header.ExtraData = extra.MarshalRLPTo(nil)
 	header.ComputeHash()
 
 	backendMock := new(polybftBackendMock)

consensus/polybft/consensus_runtime_test.go

@@ -323,7 +323,7 @@ func TestConsensusRuntime_FSM_NotEndOfEpoch_NotEndOfSprint(t *testing.T) {
 	}
 	lastBlock := &types.Header{
 		Number:    1,
-		ExtraData: append(make([]byte, ExtraVanity), extra.MarshalRLPTo(nil)...),
+		ExtraData: extra.MarshalRLPTo(nil),
 	}
 
 	validators := newTestValidators(t, 3)
@@ -730,7 +730,7 @@ func TestConsensusRuntime_IsValidProposalHash(t *testing.T) {
 	block := &types.Block{
 		Header: &types.Header{
 			Number:    10,
-			ExtraData: append(make([]byte, ExtraVanity), extra.MarshalRLPTo(nil)...),
+			ExtraData: extra.MarshalRLPTo(nil),
 		},
 	}
 	block.Header.ComputeHash()
@@ -759,15 +759,15 @@ func TestConsensusRuntime_IsValidProposalHash_InvalidProposalHash(t *testing.T)
 	block := &types.Block{
 		Header: &types.Header{
 			Number:    10,
-			ExtraData: append(make([]byte, ExtraVanity), extra.MarshalRLPTo(nil)...),
+			ExtraData: extra.MarshalRLPTo(nil),
 		},
 	}
 
 	proposalHash, err := extra.Checkpoint.Hash(0, block.Number(), block.Hash())
 	require.NoError(t, err)
 
 	extra.Checkpoint.BlockRound = 2 // change it so it is not the same as in proposal hash
-	block.Header.ExtraData = append(make([]byte, ExtraVanity), extra.MarshalRLPTo(nil)...)
+	block.Header.ExtraData = extra.MarshalRLPTo(nil)
 	block.Header.ComputeHash()
 
 	runtime := &consensusRuntime{
@@ -846,7 +846,7 @@ func TestConsensusRuntime_HasQuorum(t *testing.T) {
 
 	lastBuildBlock := &types.Header{
 		Number:    1,
-		ExtraData: append(make([]byte, ExtraVanity), extra.MarshalRLPTo(nil)...),
+		ExtraData: extra.MarshalRLPTo(nil),
 	}
 
 	blockchainMock := new(blockchainMock)
@@ -1079,7 +1079,7 @@ func createTestBlocks(t *testing.T, numberOfBlocks, defaultEpochSize uint64,
 
 	genesisBlock := &types.Header{
 		Number:    0,
-		ExtraData: append(make([]byte, ExtraVanity), extra.MarshalRLPTo(nil)...),
+		ExtraData: extra.MarshalRLPTo(nil),
 	}
 	parentHash := types.BytesToHash(big.NewInt(0).Bytes())
 
@@ -1150,12 +1150,7 @@ func createTestExtraForAccounts(t *testing.T, epoch uint64, validators AccountSe
 		Checkpoint: &CheckpointData{EpochNumber: epoch},
 	}
 
-	marshaled := extraData.MarshalRLPTo(nil)
-	result := make([]byte, ExtraVanity+len(marshaled))
-
-	copy(result[ExtraVanity:], marshaled)
-
-	return result
+	return extraData.MarshalRLPTo(nil)
 }
 
 func encodeExitEvents(t *testing.T, exitEvents []*ExitEvent) [][]byte {

consensus/polybft/extra.go

@@ -37,7 +37,7 @@ type Extra struct {
 func (i *Extra) MarshalRLPTo(dst []byte) []byte {
 	ar := &fastrlp.Arena{}
 
-	return i.MarshalRLPWith(ar).MarshalTo(dst)
+	return append(make([]byte, ExtraVanity), i.MarshalRLPWith(ar).MarshalTo(dst)...)
 }
 
 // MarshalRLPWith defines the marshal function implementation for Extra
@@ -77,7 +77,7 @@ func (i *Extra) MarshalRLPWith(ar *fastrlp.Arena) *fastrlp.Value {
 
 // UnmarshalRLP defines the unmarshal function wrapper for Extra
 func (i *Extra) UnmarshalRLP(input []byte) error {
-	return fastrlp.UnmarshalRLP(input, i)
+	return fastrlp.UnmarshalRLP(input[ExtraVanity:], i)
 }
 
 // UnmarshalRLPWith defines the unmarshal implementation for Extra
@@ -681,15 +681,14 @@ func GetIbftExtraClean(extraRaw []byte) ([]byte, error) {
 }
 
 // GetIbftExtra returns the istanbul extra data field from the passed in header
-func GetIbftExtra(extraB []byte) (*Extra, error) {
-	if len(extraB) < ExtraVanity {
-		return nil, fmt.Errorf("wrong extra size: %d", len(extraB))
+func GetIbftExtra(extraRaw []byte) (*Extra, error) {
+	if len(extraRaw) < ExtraVanity {
+		return nil, fmt.Errorf("wrong extra size: %d", len(extraRaw))
 	}
 
-	data := extraB[ExtraVanity:]
 	extra := &Extra{}
 
-	if err := extra.UnmarshalRLP(data); err != nil {
+	if err := extra.UnmarshalRLP(extraRaw); err != nil {
 		return nil, err
 	}
 

consensus/polybft/extra_test.go

@@ -675,7 +675,7 @@ func TestExtra_InitGenesisValidatorsDelta(t *testing.T) {
 			Config: &chain.Params{Engine: map[string]interface{}{
 				"polybft": polyBftConfig,
 			}},
-			ExtraData: append(make([]byte, ExtraVanity), extra.MarshalRLPTo(nil)...),
+			ExtraData: extra.MarshalRLPTo(nil),
 		}
 
 		genesisExtra, err := GetIbftExtra(genesis.ExtraData)

consensus/polybft/fsm.go

@@ -167,7 +167,7 @@ func (f *fsm) BuildProposal(currentRound uint64) ([]byte, error) {
 		"Next validators hash", nextValidatorsHash)
 
 	stateBlock, err := f.blockBuilder.Build(func(h *types.Header) {
-		h.ExtraData = append(make([]byte, ExtraVanity), extra.MarshalRLPTo(nil)...)
+		h.ExtraData = extra.MarshalRLPTo(nil)
 		h.MixHash = PolyBFTMixDigest
 	})
 
@@ -532,7 +532,7 @@ func (f *fsm) Insert(proposal []byte, committedSeals []*messages.CommittedSeal)
 	}
 
 	// Write extra data to header
-	newBlock.Block.Header.ExtraData = append(make([]byte, ExtraVanity), extra.MarshalRLPTo(nil)...)
+	newBlock.Block.Header.ExtraData = extra.MarshalRLPTo(nil)
 
 	if err := f.backend.CommitBlock(newBlock); err != nil {
 		return nil, err

consensus/polybft/fsm_test.go

@@ -1218,7 +1218,7 @@ func TestFSM_Validate_FailToVerifySignatures(t *testing.T) {
 	extra.Checkpoint = &CheckpointData{CurrentValidatorsHash: validatorsHash, NextValidatorsHash: validatorsHash}
 	parent := &types.Header{
 		Number:    parentBlockNumber,
-		ExtraData: append(make([]byte, ExtraVanity), extra.MarshalRLPTo(nil)...),
+		ExtraData: extra.MarshalRLPTo(nil),
 	}
 	parent.ComputeHash()
 
@@ -1278,11 +1278,8 @@ func createTestExtra(
 	parentSignaturesCount int,
 ) []byte {
 	extraData := createTestExtraObject(allAccounts, previousValidatorSet, validatorsCount, committedSignaturesCount, parentSignaturesCount)
-	marshaled := extraData.MarshalRLPTo(nil)
-	result := make([]byte, ExtraVanity+len(marshaled))
-	copy(result[ExtraVanity:], marshaled)
 
-	return result
+	return extraData.MarshalRLPTo(nil)
 }
 
 func createTestCommitment(t *testing.T, accounts []*wallet.Account) *CommitmentMessageSigned {

consensus/polybft/hash_test.go

@@ -24,11 +24,11 @@ func Test_setupHeaderHashFunc(t *testing.T) {
 		Timestamp: 18,
 	}
 
-	header.ExtraData = append(make([]byte, ExtraVanity), extra.MarshalRLPTo(nil)...)
+	header.ExtraData = extra.MarshalRLPTo(nil)
 	notFullExtraHash := types.HeaderHash(header)
 
 	extra.Committed = createSignature(t, []*wallet.Account{generateTestAccount(t)}, types.ZeroHash, bls.DomainCheckpointManager)
-	header.ExtraData = append(make([]byte, ExtraVanity), extra.MarshalRLPTo(nil)...)
+	header.ExtraData = extra.MarshalRLPTo(nil)
 	fullExtraHash := types.HeaderHash(header)
 
 	assert.Equal(t, notFullExtraHash, fullExtraHash)

consensus/polybft/polybft_test.go

@@ -6,7 +6,6 @@ import (
 	"time"
 
 	"github.com/0xPolygon/polygon-edge/consensus"
-	"github.com/0xPolygon/polygon-edge/consensus/ibft/signer"
 	bls "github.com/0xPolygon/polygon-edge/consensus/polybft/signer"
 	"github.com/0xPolygon/polygon-edge/consensus/polybft/wallet"
 	"github.com/0xPolygon/polygon-edge/helper/progress"
@@ -47,15 +46,15 @@ func TestPolybft_VerifyHeader(t *testing.T) {
 			extra.Checkpoint = &CheckpointData{}
 		}
 
-		header.ExtraData = append(make([]byte, ExtraVanity), extra.MarshalRLPTo(nil)...)
+		header.ExtraData = extra.MarshalRLPTo(nil)
 		header.ComputeHash()
 
 		if len(committedAccounts) > 0 {
 			checkpointHash, err := extra.Checkpoint.Hash(0, header.Number, header.Hash)
 			require.NoError(t, err)
 
 			extra.Committed = createSignature(t, committedAccounts, checkpointHash, bls.DomainCheckpointManager)
-			header.ExtraData = append(make([]byte, signer.IstanbulExtraVanity), extra.MarshalRLPTo(nil)...)
+			header.ExtraData = extra.MarshalRLPTo(nil)
 		}
 
 		return extra.Committed

consensus/polybft/runtime_helpers_test.go

@@ -52,7 +52,7 @@ func TestHelpers_isEpochEndingBlock_EpochsNotTheSame(t *testing.T) {
 	nextBlockExtra := &Extra{Checkpoint: &CheckpointData{EpochNumber: 3}, Validators: &ValidatorSetDelta{}}
 	nextBlock := &types.Header{
 		Number:    21,
-		ExtraData: append(make([]byte, ExtraVanity), nextBlockExtra.MarshalRLPTo(nil)...),
+		ExtraData: nextBlockExtra.MarshalRLPTo(nil),
 	}
 
 	blockchainMock.On("GetHeaderByNumber", mock.Anything).Return(nextBlock, true)
@@ -73,7 +73,7 @@ func TestHelpers_isEpochEndingBlock_EpochsAreTheSame(t *testing.T) {
 	nextBlockExtra := &Extra{Checkpoint: &CheckpointData{EpochNumber: 2}, Validators: &ValidatorSetDelta{}}
 	nextBlock := &types.Header{
 		Number:    16,
-		ExtraData: append(make([]byte, ExtraVanity), nextBlockExtra.MarshalRLPTo(nil)...),
+		ExtraData: nextBlockExtra.MarshalRLPTo(nil),
 	}
 
 	blockchainMock.On("GetHeaderByNumber", mock.Anything).Return(nextBlock, true)

consensus/polybft/validators_snapshot_test.go

@@ -282,7 +282,7 @@ func createValidatorDeltaHeader(t *testing.T, blockNumber, epoch uint64, oldVali
 
 	return &types.Header{
 		Number:    blockNumber,
-		ExtraData: append(make([]byte, ExtraVanity), extra.MarshalRLPTo(nil)...),
+		ExtraData: extra.MarshalRLPTo(nil),
 	}
 }