!feat(evm): Reject not replay-protected tx to prevent replay attack (#1124)

* Reject not replay-protected tx to prevent replay attack

Closes: #1122

- reject such txs in ante handler

* add reject unprotected parameter

* Update CHANGELOG.md

* Apply suggestions from code review

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

* pr suggestions

* add unit test case

* Reject not replay-protected tx to prevent replay attack

Closes: #1122

- reject such txs in ante handler

add reject unprotected parameter

Update CHANGELOG.md

Apply suggestions from code review

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

pr suggestions

add unit test case

use var

* add migrations

* Apply suggestions from code review

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

* rename

* update comments

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

CHANGELOG.md

@@ -38,6 +38,10 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ## Unreleased
 
+### State Machine Breaking
+
+* (evm) [tharsis#1124](https://github.com/tharsis/ethermint/pull/1124) Reject non-replay-protected tx in ante handler to prevent replay attack
+
 ### Bug Fixes
 
 * (evm) [tharsis#1118](https://github.com/tharsis/ethermint/pull/1118) Fix `Type()` `Account` method `EmptyCodeHash` comparison

app/ante/eth.go

@@ -50,7 +50,12 @@ func (esvd EthSigVerificationDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, s
 			return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid message type %T, expected %T", msg, (*evmtypes.MsgEthereumTx)(nil))
 		}
 
-		sender, err := signer.Sender(msgEthTx.AsTransaction())
+		ethTx := msgEthTx.AsTransaction()
+		if params.RejectUnprotectedTx && !ethTx.Protected() {
+			return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "eth tx is not replay-protected")
+		}
+
+		sender, err := signer.Sender(ethTx)
 		if err != nil {
 			return ctx, sdkerrors.Wrapf(
 				sdkerrors.ErrorInvalidSigner,

app/ante/eth_test.go

@@ -15,7 +15,6 @@ import (
 )
 
 func (suite AnteTestSuite) TestEthSigVerificationDecorator() {
-	dec := ante.NewEthSigVerificationDecorator(suite.app.EvmKeeper)
 	addr, privKey := tests.NewAddrKey()
 
 	signedTx := evmtypes.NewTxContract(suite.app.EvmKeeper.ChainID(), 1, big.NewInt(10), 1000, big.NewInt(1), nil, nil, nil, nil)
@@ -23,25 +22,39 @@ func (suite AnteTestSuite) TestEthSigVerificationDecorator() {
 	err := signedTx.Sign(suite.ethSigner, tests.NewSigner(privKey))
 	suite.Require().NoError(err)
 
+	unprotectedTx := evmtypes.NewTxContract(nil, 1, big.NewInt(10), 1000, big.NewInt(1), nil, nil, nil, nil)
+	unprotectedTx.From = addr.Hex()
+	err = unprotectedTx.Sign(ethtypes.HomesteadSigner{}, tests.NewSigner(privKey))
+	suite.Require().NoError(err)
+
 	testCases := []struct {
-		name      string
+		name                string
-		tx        sdk.Tx
+		tx                  sdk.Tx
-		reCheckTx bool
+		rejectUnprotectedTx bool
-		expPass   bool
+		reCheckTx           bool
+		expPass             bool
 	}{
-		{"ReCheckTx", &invalidTx{}, true, false},
+		{"ReCheckTx", &invalidTx{}, true, true, false},
-		{"invalid transaction type", &invalidTx{}, false, false},
+		{"invalid transaction type", &invalidTx{}, true, false, false},
 		{
 			"invalid sender",
 			evmtypes.NewTx(suite.app.EvmKeeper.ChainID(), 1, &addr, big.NewInt(10), 1000, big.NewInt(1), nil, nil, nil, nil),
+			true,
 			false,
 			false,
 		},
-		{"successful signature verification", signedTx, false, true},
+		{"successful signature verification", signedTx, true, false, true},
+		{"invalid, not replay-protected", unprotectedTx, true, false, false},
+		{"successful, don't reject unprotected", unprotectedTx, false, false, true},
 	}
 
 	for _, tc := range testCases {
 		suite.Run(tc.name, func() {
+			suite.evmParamsOption = func(params *evmtypes.Params) {
+				params.RejectUnprotectedTx = tc.rejectUnprotectedTx
+			}
+			suite.SetupTest()
+			dec := ante.NewEthSigVerificationDecorator(suite.app.EvmKeeper)
 			_, err := dec.AnteHandle(suite.ctx.WithIsReCheckTx(tc.reCheckTx), tc.tx, false, NextFn)
 
 			if tc.expPass {
@@ -51,6 +64,7 @@ func (suite AnteTestSuite) TestEthSigVerificationDecorator() {
 			}
 		})
 	}
+	suite.evmParamsOption = nil
 }
 
 func (suite AnteTestSuite) TestNewEthAccountVerificationDecorator() {

app/ante/utils_test.go

@@ -76,6 +76,7 @@ func (suite *AnteTestSuite) SetupTest() {
 			genesis[feemarkettypes.ModuleName] = app.AppCodec().MustMarshalJSON(feemarketGenesis)
 		}
 		evmGenesis := evmtypes.DefaultGenesisState()
+		evmGenesis.Params.RejectUnprotectedTx = true
 		if !suite.enableLondonHF {
 			maxInt := sdk.NewInt(math.MaxInt64)
 			evmGenesis.Params.ChainConfig.LondonBlock = &maxInt

docs/api/proto-docs.md

@@ -227,6 +227,7 @@ Params defines the EVM module parameters
 | `enable_call` | [bool](#bool) |  | enable call toggles state transitions that use the vm.Call function |
 | `extra_eips` | [int64](#int64) | repeated | extra eips defines the additional EIPs for the vm.Config |
 | `chain_config` | [ChainConfig](#ethermint.evm.v1.ChainConfig) |  | chain config defines the EVM chain configuration parameters |
+| `reject_unprotected_tx` | [bool](#bool) |  | reject replay-unprotected transactions |
 
 
 
@@ -443,6 +444,7 @@ DynamicFeeTx is the data of EIP-1559 dinamic fee transactions.
 
 ### LegacyTx
 LegacyTx is the transaction data of regular Ethereum transactions.
+NOTE: All non-protected transactions (i.e non EIP155 signed) will fail if the RejectUnprotectedTx parameter is enabled.
 
 
 | Field | Type | Label | Description |

proto/ethermint/evm/v1/evm.proto

@@ -24,6 +24,8 @@ message Params {
     (gogoproto.moretags) = "yaml:\"chain_config\"",
     (gogoproto.nullable) = false
   ];
+  // reject replay-unprotected transactions
+  bool reject_unprotected_tx = 6;
 }
 
 // ChainConfig defines the Ethereum ChainConfig parameters using *sdk.Int values

proto/ethermint/evm/v1/tx.proto

@@ -36,6 +36,7 @@ message MsgEthereumTx {
 }
 
 // LegacyTx is the transaction data of regular Ethereum transactions.
+// NOTE: All non-protected transactions (i.e non EIP155 signed) will fail if the RejectUnprotectedTx parameter is enabled. 
 message LegacyTx {
   option (gogoproto.goproto_getters) = false;
   option (cosmos_proto.implements_interface) = "TxData";

x/evm/keeper/migrations.go

@@ -1,5 +1,10 @@
 package keeper
 
+import (
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	v2 "github.com/tharsis/ethermint/x/evm/migrations/v2"
+)
+
 // Migrator is a struct for handling in-place store migrations.
 type Migrator struct {
 	keeper Keeper
@@ -11,3 +16,8 @@ func NewMigrator(keeper Keeper) Migrator {
 		keeper: keeper,
 	}
 }
+
+// Migrate1to2 migrates the store from consensus version v1 to v2
+func (m Migrator) Migrate1to2(ctx sdk.Context) error {
+	return v2.MigrateStore(ctx, &m.keeper.paramSpace)
+}

x/evm/migrations/v2/migrate.go

@@ -0,0 +1,19 @@
+package v2
+
+import (
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
+	"github.com/tharsis/ethermint/x/evm/types"
+)
+
+// MigrateStore add the default RejectUnprotected parameter.
+func MigrateStore(ctx sdk.Context, paramstore *paramtypes.Subspace) error {
+	if !paramstore.HasKeyTable() {
+		ps := paramstore.WithKeyTable(types.ParamKeyTable())
+		paramstore = &ps
+	}
+
+	// add RejectUnprotected
+	paramstore.Set(ctx, types.ParamStoreKeyRejectUnprotectedTx, types.DefaultParams().RejectUnprotectedTx)
+	return nil
+}

x/evm/migrations/v2/migrate_test.go

@@ -0,0 +1,47 @@
+package v2_test
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/cosmos/cosmos-sdk/testutil"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
+
+	"github.com/tharsis/ethermint/encoding"
+
+	"github.com/tharsis/ethermint/app"
+	v2 "github.com/tharsis/ethermint/x/evm/migrations/v2"
+	v2types "github.com/tharsis/ethermint/x/evm/migrations/v2/types"
+	"github.com/tharsis/ethermint/x/evm/types"
+)
+
+func TestMigrateStore(t *testing.T) {
+	encCfg := encoding.MakeConfig(app.ModuleBasics)
+	feemarketKey := sdk.NewKVStoreKey(types.StoreKey)
+	tFeeMarketKey := sdk.NewTransientStoreKey(fmt.Sprintf("%s_test", types.StoreKey))
+	ctx := testutil.DefaultContext(feemarketKey, tFeeMarketKey)
+	paramstore := paramtypes.NewSubspace(
+		encCfg.Marshaler, encCfg.Amino, feemarketKey, tFeeMarketKey, "evm",
+	).WithKeyTable(v2types.ParamKeyTable())
+
+	params := v2types.DefaultParams()
+	paramstore.SetParamSet(ctx, &params)
+
+	require.Panics(t, func() {
+		var result bool
+		paramstore.Get(ctx, types.ParamStoreKeyRejectUnprotectedTx, &result)
+	})
+
+	paramstore = paramtypes.NewSubspace(
+		encCfg.Marshaler, encCfg.Amino, feemarketKey, tFeeMarketKey, "evm",
+	).WithKeyTable(types.ParamKeyTable())
+	err := v2.MigrateStore(ctx, &paramstore)
+	require.NoError(t, err)
+
+	var result bool
+	paramstore.Get(ctx, types.ParamStoreKeyRejectUnprotectedTx, &result)
+	require.Equal(t, types.DefaultRejectUnprotectedTx, result)
+}

x/evm/migrations/v2/types/chain_config.go

@@ -0,0 +1,165 @@
+package types
+
+import (
+	"math/big"
+	"strings"
+
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/params"
+
+	"github.com/tharsis/ethermint/x/evm/types"
+)
+
+// EthereumConfig returns an Ethereum ChainConfig for EVM state transitions.
+// All the negative or nil values are converted to nil
+func (cc ChainConfig) EthereumConfig(chainID *big.Int) *params.ChainConfig {
+	return &params.ChainConfig{
+		ChainID:                 chainID,
+		HomesteadBlock:          getBlockValue(cc.HomesteadBlock),
+		DAOForkBlock:            getBlockValue(cc.DAOForkBlock),
+		DAOForkSupport:          cc.DAOForkSupport,
+		EIP150Block:             getBlockValue(cc.EIP150Block),
+		EIP150Hash:              common.HexToHash(cc.EIP150Hash),
+		EIP155Block:             getBlockValue(cc.EIP155Block),
+		EIP158Block:             getBlockValue(cc.EIP158Block),
+		ByzantiumBlock:          getBlockValue(cc.ByzantiumBlock),
+		ConstantinopleBlock:     getBlockValue(cc.ConstantinopleBlock),
+		PetersburgBlock:         getBlockValue(cc.PetersburgBlock),
+		IstanbulBlock:           getBlockValue(cc.IstanbulBlock),
+		MuirGlacierBlock:        getBlockValue(cc.MuirGlacierBlock),
+		BerlinBlock:             getBlockValue(cc.BerlinBlock),
+		LondonBlock:             getBlockValue(cc.LondonBlock),
+		ArrowGlacierBlock:       getBlockValue(cc.ArrowGlacierBlock),
+		MergeForkBlock:          getBlockValue(cc.MergeForkBlock),
+		TerminalTotalDifficulty: nil,
+		Ethash:                  nil,
+		Clique:                  nil,
+	}
+}
+
+// DefaultChainConfig returns default evm parameters.
+func DefaultChainConfig() ChainConfig {
+	homesteadBlock := sdk.ZeroInt()
+	daoForkBlock := sdk.ZeroInt()
+	eip150Block := sdk.ZeroInt()
+	eip155Block := sdk.ZeroInt()
+	eip158Block := sdk.ZeroInt()
+	byzantiumBlock := sdk.ZeroInt()
+	constantinopleBlock := sdk.ZeroInt()
+	petersburgBlock := sdk.ZeroInt()
+	istanbulBlock := sdk.ZeroInt()
+	muirGlacierBlock := sdk.ZeroInt()
+	berlinBlock := sdk.ZeroInt()
+	londonBlock := sdk.ZeroInt()
+	arrowGlacierBlock := sdk.ZeroInt()
+	mergeForkBlock := sdk.ZeroInt()
+
+	return ChainConfig{
+		HomesteadBlock:      &homesteadBlock,
+		DAOForkBlock:        &daoForkBlock,
+		DAOForkSupport:      true,
+		EIP150Block:         &eip150Block,
+		EIP150Hash:          common.Hash{}.String(),
+		EIP155Block:         &eip155Block,
+		EIP158Block:         &eip158Block,
+		ByzantiumBlock:      &byzantiumBlock,
+		ConstantinopleBlock: &constantinopleBlock,
+		PetersburgBlock:     &petersburgBlock,
+		IstanbulBlock:       &istanbulBlock,
+		MuirGlacierBlock:    &muirGlacierBlock,
+		BerlinBlock:         &berlinBlock,
+		LondonBlock:         &londonBlock,
+		ArrowGlacierBlock:   &arrowGlacierBlock,
+		MergeForkBlock:      &mergeForkBlock,
+	}
+}
+
+func getBlockValue(block *sdk.Int) *big.Int {
+	if block == nil || block.IsNegative() {
+		return nil
+	}
+
+	return block.BigInt()
+}
+
+// Validate performs a basic validation of the ChainConfig params. The function will return an error
+// if any of the block values is uninitialized (i.e nil) or if the EIP150Hash is an invalid hash.
+func (cc ChainConfig) Validate() error {
+	if err := validateBlock(cc.HomesteadBlock); err != nil {
+		return sdkerrors.Wrap(err, "homesteadBlock")
+	}
+	if err := validateBlock(cc.DAOForkBlock); err != nil {
+		return sdkerrors.Wrap(err, "daoForkBlock")
+	}
+	if err := validateBlock(cc.EIP150Block); err != nil {
+		return sdkerrors.Wrap(err, "eip150Block")
+	}
+	if err := validateHash(cc.EIP150Hash); err != nil {
+		return err
+	}
+	if err := validateBlock(cc.EIP155Block); err != nil {
+		return sdkerrors.Wrap(err, "eip155Block")
+	}
+	if err := validateBlock(cc.EIP158Block); err != nil {
+		return sdkerrors.Wrap(err, "eip158Block")
+	}
+	if err := validateBlock(cc.ByzantiumBlock); err != nil {
+		return sdkerrors.Wrap(err, "byzantiumBlock")
+	}
+	if err := validateBlock(cc.ConstantinopleBlock); err != nil {
+		return sdkerrors.Wrap(err, "constantinopleBlock")
+	}
+	if err := validateBlock(cc.PetersburgBlock); err != nil {
+		return sdkerrors.Wrap(err, "petersburgBlock")
+	}
+	if err := validateBlock(cc.IstanbulBlock); err != nil {
+		return sdkerrors.Wrap(err, "istanbulBlock")
+	}
+	if err := validateBlock(cc.MuirGlacierBlock); err != nil {
+		return sdkerrors.Wrap(err, "muirGlacierBlock")
+	}
+	if err := validateBlock(cc.BerlinBlock); err != nil {
+		return sdkerrors.Wrap(err, "berlinBlock")
+	}
+	if err := validateBlock(cc.LondonBlock); err != nil {
+		return sdkerrors.Wrap(err, "londonBlock")
+	}
+	if err := validateBlock(cc.ArrowGlacierBlock); err != nil {
+		return sdkerrors.Wrap(err, "arrowGlacierBlock")
+	}
+	if err := validateBlock(cc.MergeForkBlock); err != nil {
+		return sdkerrors.Wrap(err, "mergeForkBlock")
+	}
+
+	// NOTE: chain ID is not needed to check config order
+	if err := cc.EthereumConfig(nil).CheckConfigForkOrder(); err != nil {
+		return sdkerrors.Wrap(err, "invalid config fork order")
+	}
+	return nil
+}
+
+func validateHash(hex string) error {
+	if hex != "" && strings.TrimSpace(hex) == "" {
+		return sdkerrors.Wrap(types.ErrInvalidChainConfig, "hash cannot be blank")
+	}
+
+	return nil
+}
+
+func validateBlock(block *sdk.Int) error {
+	// nil value means that the fork has not yet been applied
+	if block == nil {
+		return nil
+	}
+
+	if block.IsNegative() {
+		return sdkerrors.Wrapf(
+			types.ErrInvalidChainConfig, "block value cannot be negative: %s", block,
+		)
+	}
+
+	return nil
+}

x/evm/migrations/v2/types/params.go

@@ -0,0 +1,145 @@
+package types
+
+import (
+	"fmt"
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/params"
+
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
+	"github.com/ethereum/go-ethereum/core/vm"
+	"github.com/tharsis/ethermint/types"
+)
+
+var _ paramtypes.ParamSet = &Params{}
+
+const (
+	DefaultEVMDenom = types.AttoPhoton
+)
+
+// DefaultMinGasMultiplier is 0.5 or 50%
+var DefaultMinGasMultiplier = sdk.NewDecWithPrec(50, 2)
+
+// Parameter keys
+var (
+	ParamStoreKeyEVMDenom     = []byte("EVMDenom")
+	ParamStoreKeyEnableCreate = []byte("EnableCreate")
+	ParamStoreKeyEnableCall   = []byte("EnableCall")
+	ParamStoreKeyExtraEIPs    = []byte("EnableExtraEIPs")
+	ParamStoreKeyChainConfig  = []byte("ChainConfig")
+
+	// AvailableExtraEIPs define the list of all EIPs that can be enabled by the
+	// EVM interpreter. These EIPs are applied in order and can override the
+	// instruction sets from the latest hard fork enabled by the ChainConfig. For
+	// more info check:
+	// https://github.com/ethereum/go-ethereum/blob/master/core/vm/interpreter.go#L97
+	AvailableExtraEIPs = []int64{1344, 1884, 2200, 2929, 3198, 3529}
+)
+
+// ParamKeyTable returns the parameter key table.
+func ParamKeyTable() paramtypes.KeyTable {
+	return paramtypes.NewKeyTable().RegisterParamSet(&Params{})
+}
+
+// NewParams creates a new Params instance
+func NewParams(evmDenom string, enableCreate, enableCall bool, config ChainConfig, extraEIPs ...int64) Params {
+	return Params{
+		EvmDenom:     evmDenom,
+		EnableCreate: enableCreate,
+		EnableCall:   enableCall,
+		ExtraEIPs:    extraEIPs,
+		ChainConfig:  config,
+	}
+}
+
+// DefaultParams returns default evm parameters
+// ExtraEIPs is empty to prevent overriding the latest hard fork instruction set
+func DefaultParams() Params {
+	return Params{
+		EvmDenom:     DefaultEVMDenom,
+		EnableCreate: true,
+		EnableCall:   true,
+		ChainConfig:  DefaultChainConfig(),
+		ExtraEIPs:    nil,
+	}
+}
+
+// ParamSetPairs returns the parameter set pairs.
+func (p *Params) ParamSetPairs() paramtypes.ParamSetPairs {
+	return paramtypes.ParamSetPairs{
+		paramtypes.NewParamSetPair(ParamStoreKeyEVMDenom, &p.EvmDenom, validateEVMDenom),
+		paramtypes.NewParamSetPair(ParamStoreKeyEnableCreate, &p.EnableCreate, validateBool),
+		paramtypes.NewParamSetPair(ParamStoreKeyEnableCall, &p.EnableCall, validateBool),
+		paramtypes.NewParamSetPair(ParamStoreKeyExtraEIPs, &p.ExtraEIPs, validateEIPs),
+		paramtypes.NewParamSetPair(ParamStoreKeyChainConfig, &p.ChainConfig, validateChainConfig),
+	}
+}
+
+// Validate performs basic validation on evm parameters.
+func (p Params) Validate() error {
+	if err := sdk.ValidateDenom(p.EvmDenom); err != nil {
+		return err
+	}
+
+	if err := validateEIPs(p.ExtraEIPs); err != nil {
+		return err
+	}
+
+	return p.ChainConfig.Validate()
+}
+
+// EIPs returns the ExtraEips as a int slice
+func (p Params) EIPs() []int {
+	eips := make([]int, len(p.ExtraEIPs))
+	for i, eip := range p.ExtraEIPs {
+		eips[i] = int(eip)
+	}
+	return eips
+}
+
+func validateEVMDenom(i interface{}) error {
+	denom, ok := i.(string)
+	if !ok {
+		return fmt.Errorf("invalid parameter EVM denom type: %T", i)
+	}
+
+	return sdk.ValidateDenom(denom)
+}
+
+func validateBool(i interface{}) error {
+	_, ok := i.(bool)
+	if !ok {
+		return fmt.Errorf("invalid parameter type: %T", i)
+	}
+	return nil
+}
+
+func validateEIPs(i interface{}) error {
+	eips, ok := i.([]int64)
+	if !ok {
+		return fmt.Errorf("invalid EIP slice type: %T", i)
+	}
+
+	for _, eip := range eips {
+		if !vm.ValidEip(int(eip)) {
+			return fmt.Errorf("EIP %d is not activateable, valid EIPS are: %s", eip, vm.ActivateableEips())
+		}
+	}
+
+	return nil
+}
+
+func validateChainConfig(i interface{}) error {
+	cfg, ok := i.(ChainConfig)
+	if !ok {
+		return fmt.Errorf("invalid chain config type: %T", i)
+	}
+
+	return cfg.Validate()
+}
+
+// IsLondon returns if london hardfork is enabled.
+func IsLondon(ethConfig *params.ChainConfig, height int64) bool {
+	return ethConfig.IsLondon(big.NewInt(height))
+}

x/evm/module.go

@@ -44,7 +44,7 @@ func (AppModuleBasic) RegisterLegacyAminoCodec(_ *codec.LegacyAmino) {
 
 // ConsensusVersion returns the consensus state-breaking version for the module.
 func (AppModuleBasic) ConsensusVersion() uint64 {
-	return 1
+	return 2
 }
 
 // DefaultGenesis returns default genesis state as raw bytes for the evm
@@ -123,7 +123,11 @@ func (am AppModule) RegisterServices(cfg module.Configurator) {
 	types.RegisterMsgServer(cfg.MsgServer(), am.keeper)
 	types.RegisterQueryServer(cfg.QueryServer(), am.keeper)
 
-	_ = keeper.NewMigrator(*am.keeper)
+	m := keeper.NewMigrator(*am.keeper)
+	err := cfg.RegisterMigration(types.ModuleName, 1, m.Migrate1to2)
+	if err != nil {
+		panic(err)
+	}
 }
 
 // Route returns the message routing key for the evm module.

x/evm/types/evm.pb.go

@@ -37,6 +37,8 @@ type Params struct {
 	ExtraEIPs []int64 `protobuf:"varint,4,rep,packed,name=extra_eips,json=extraEips,proto3" json:"extra_eips,omitempty" yaml:"extra_eips"`
 	// chain config defines the EVM chain configuration parameters
 	ChainConfig ChainConfig `protobuf:"bytes,5,opt,name=chain_config,json=chainConfig,proto3" json:"chain_config" yaml:"chain_config"`
+	// reject replay-unprotected transactions
+	RejectUnprotectedTx bool `protobuf:"varint,6,opt,name=reject_unprotected_tx,json=rejectUnprotectedTx,proto3" json:"reject_unprotected_tx,omitempty"`
 }
 
 func (m *Params) Reset()         { *m = Params{} }
@@ -107,6 +109,13 @@ func (m *Params) GetChainConfig() ChainConfig {
 	return ChainConfig{}
 }
 
+func (m *Params) GetRejectUnprotectedTx() bool {
+	if m != nil {
+		return m.RejectUnprotectedTx
+	}
+	return false
+}
+
 // ChainConfig defines the Ethereum ChainConfig parameters using *sdk.Int values
 // instead of *big.Int.
 type ChainConfig struct {
@@ -657,100 +666,101 @@ func init() {
 func init() { proto.RegisterFile("ethermint/evm/v1/evm.proto", fileDescriptor_d21ecc92c8c8583e) }
 
 var fileDescriptor_d21ecc92c8c8583e = []byte{
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-	0xeb, 0x57, 0xfc, 0x6b, 0x1a, 0x20, 0x19, 0x62, 0xff, 0x3a, 0x07, 0x0a, 0xaf, 0x69, 0x00, 0xeb,
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-	0x60, 0x11, 0xfb, 0x3e, 0x23, 0x9c, 0x6b, 0xa6, 0x01, 0x84, 0x6b, 0x60, 0x41, 0xd0, 0x76, 0xe8,
+	0xfc, 0x17, 0x28, 0x46, 0x34, 0xe0, 0xf5, 0xb9, 0xcd, 0xc2, 0x56, 0x79, 0xf7, 0xde, 0xf5, 0x67,
-	0x29, 0xba, 0x12, 0xd2, 0x28, 0x17, 0xf6, 0xb1, 0xc0, 0xf2, 0xaa, 0xab, 0x20, 0x39, 0x86, 0xbb,
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+	0x12, 0xd2, 0x28, 0x17, 0xf6, 0xb1, 0xc0, 0xf2, 0xaa, 0xab, 0x20, 0x39, 0x86, 0xbb, 0xa0, 0x22,
-	0x57, 0x99, 0x55, 0x13, 0xa3, 0x65, 0xe6, 0x77, 0x09, 0x5a, 0x10, 0x5d, 0x79, 0xa7, 0x34, 0x80,
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-	0x21, 0xba, 0x6e, 0x98, 0xf8, 0xa4, 0x2b, 0xef, 0x93, 0xa2, 0xb3, 0x7a, 0x95, 0x59, 0xe6, 0x58,
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+	0xab, 0x26, 0x46, 0xcb, 0xcc, 0xef, 0x12, 0xb4, 0x20, 0xba, 0xf2, 0x4e, 0x69, 0x00, 0x43, 0x74,
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+	0xdd, 0x30, 0xf1, 0x89, 0x7a, 0x8d, 0x14, 0x9d, 0xd5, 0xab, 0xcc, 0x32, 0xc7, 0xc2, 0x8f, 0x73,
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+	0x1f, 0x5a, 0x14, 0x5d, 0x39, 0x80, 0x0f, 0x01, 0x50, 0x53, 0x92, 0x0a, 0xea, 0x36, 0x58, 0xba,
-	0x10, 0x5f, 0x7e, 0x70, 0x0d, 0x34, 0x80, 0xf6, 0x8f, 0x73, 0xc0, 0x38, 0xef, 0x22, 0xc2, 0xd3,
+	0xca, 0xac, 0x92, 0xb4, 0x4a, 0xee, 0xd1, 0x10, 0xda, 0x60, 0x5e, 0x71, 0x1b, 0x92, 0xbb, 0x72,
-	0x48, 0xc0, 0x17, 0xc0, 0xf4, 0x68, 0x22, 0x18, 0xf6, 0x84, 0x3b, 0x51, 0x5a, 0xe7, 0xc1, 0xa8,
+	0x95, 0x59, 0x46, 0x44, 0x03, 0xc5, 0xa9, 0x5c, 0x79, 0xa9, 0x18, 0x89, 0x69, 0x87, 0xf8, 0xf2,
-	0xc3, 0xa6, 0x23, 0x6c, 0x54, 0x1b, 0x98, 0xf6, 0x75, 0xfd, 0x57, 0xc1, 0x7c, 0x33, 0xa2, 0x34,
+	0xc0, 0x35, 0xd0, 0x00, 0xda, 0x3f, 0xcc, 0x01, 0xe3, 0xbc, 0x8b, 0x08, 0x4f, 0x23, 0x01, 0x5f,
-	0x96, 0x9d, 0x50, 0x41, 0x0a, 0x40, 0x24, 0xab, 0x26, 0x77, 0xb9, 0x20, 0x1f, 0x72, 0xff, 0xb9,
+	0x00, 0xd3, 0xa3, 0x89, 0x60, 0xd8, 0x13, 0xee, 0x44, 0x69, 0x9d, 0x07, 0xa3, 0x0e, 0x9b, 0x8e,
-	0xbe, 0xcb, 0x53, 0xad, 0xe2, 0xac, 0xe9, 0xc7, 0x5c, 0x55, 0x69, 0xeb, 0x7c, 0x3b, 0xaf, 0xad,
+	0xb0, 0x51, 0x6d, 0x60, 0xda, 0xd7, 0xf5, 0x5f, 0x05, 0xf3, 0xcd, 0x88, 0xd2, 0x58, 0x76, 0x42,
-	0x6c, 0x25, 0x13, 0x14, 0x18, 0x11, 0x72, 0xd3, 0x2a, 0x28, 0x1f, 0xc2, 0x75, 0x60, 0x30, 0xd2,
+	0x05, 0x29, 0x00, 0x91, 0xac, 0x9a, 0xdc, 0xe5, 0x82, 0x7c, 0xfc, 0xfd, 0xe3, 0xfa, 0x2e, 0x4f,
-	0x21, 0x4c, 0x10, 0x5f, 0x6e, 0x8e, 0x81, 0x86, 0x18, 0xde, 0x07, 0x46, 0x80, 0xb9, 0x9b, 0x72,
+	0xb5, 0x8a, 0xb3, 0xa6, 0x1f, 0x80, 0x55, 0xa5, 0xad, 0xf3, 0xed, 0xbc, 0xb6, 0xb2, 0x95, 0x4c,
-	0xe2, 0xab, 0x9d, 0x40, 0x8b, 0x01, 0xe6, 0x5f, 0x72, 0xe2, 0x3f, 0x2b, 0xfe, 0xf0, 0xb3, 0x35,
+	0x50, 0x60, 0x44, 0xc8, 0x4d, 0xab, 0xa0, 0x7c, 0x08, 0xd7, 0x81, 0xc1, 0x48, 0x87, 0x30, 0x41,
-	0x63, 0x63, 0x50, 0xde, 0xf7, 0x3c, 0xc2, 0xf9, 0x79, 0xda, 0x8e, 0xc8, 0x5f, 0x74, 0xd8, 0x2e,
+	0x7c, 0xb9, 0x39, 0x06, 0x1a, 0x62, 0x78, 0x1f, 0x18, 0x01, 0xe6, 0x6e, 0xca, 0x89, 0xaf, 0x76,
-	0xa8, 0x70, 0x41, 0x19, 0x0e, 0x88, 0x7b, 0x41, 0x7a, 0xba, 0xcf, 0x54, 0xd7, 0x68, 0xfb, 0xa7,
+	0x02, 0x2d, 0x06, 0x98, 0xbf, 0xe1, 0xc4, 0x7f, 0x56, 0xfc, 0xee, 0x27, 0x6b, 0xc6, 0xc6, 0xa0,
-	0xa4, 0xc7, 0xd1, 0x38, 0xd0, 0x12, 0x1f, 0x0a, 0xa0, 0x7c, 0xce, 0xb0, 0x47, 0xf4, 0xa3, 0x33,
+	0xbc, 0xef, 0x79, 0x84, 0xf3, 0xf3, 0xb4, 0x1d, 0x91, 0x3f, 0xe8, 0xb0, 0x5d, 0x50, 0xe1, 0x82,
-	0xef, 0xd5, 0x1c, 0x32, 0x2d, 0xa1, 0x51, 0xae, 0x2d, 0xc2, 0x98, 0xd0, 0x54, 0xe8, 0xf3, 0x34,
+	0x32, 0x1c, 0x10, 0xf7, 0x82, 0xf4, 0x74, 0x9f, 0xa9, 0xae, 0xd1, 0xf6, 0xff, 0x92, 0x1e, 0x47,
-	0x80, 0x79, 0x06, 0x23, 0xa4, 0x4b, 0x3c, 0x59, 0xc6, 0x22, 0xd2, 0x08, 0xee, 0x81, 0x25, 0x3f,
+	0xe3, 0x40, 0x4b, 0x7c, 0x2a, 0x80, 0xf2, 0x39, 0xc3, 0x1e, 0xd1, 0x8f, 0xce, 0xbc, 0x57, 0x73,
-	0xe4, 0xf2, 0x35, 0xce, 0x05, 0xf6, 0x2e, 0xd4, 0xf2, 0x1d, 0xf3, 0x2a, 0xb3, 0x2a, 0xda, 0x71,
+	0xc8, 0xb4, 0x84, 0x46, 0xb9, 0xb6, 0x08, 0x63, 0x42, 0x53, 0xa1, 0xbf, 0xa7, 0x01, 0xcc, 0x33,
-	0x96, 0xdb, 0xd1, 0x04, 0x82, 0xcf, 0x41, 0x6d, 0x94, 0x26, 0x67, 0x2b, 0x6b, 0x63, 0x38, 0xf0,
+	0x18, 0x21, 0x5d, 0xe2, 0xc9, 0x32, 0x16, 0x91, 0x46, 0x70, 0x0f, 0x2c, 0xf9, 0x21, 0x97, 0x2f,
-	0x2a, 0xb3, 0xaa, 0xc3, 0x50, 0xe9, 0x41, 0x53, 0x38, 0xdf, 0x69, 0x9f, 0x34, 0xd3, 0x40, 0x36,
+	0x78, 0x2e, 0xb0, 0x77, 0xa1, 0x96, 0xef, 0x98, 0x57, 0x99, 0x55, 0xd1, 0x8e, 0xb3, 0xdc, 0x8e,
-	0x9f, 0x81, 0x14, 0xc8, 0xad, 0x51, 0x18, 0x87, 0x42, 0x36, 0xdb, 0x3c, 0x52, 0x00, 0x3e, 0x07,
+	0x26, 0x10, 0x7c, 0x0e, 0x6a, 0xa3, 0x34, 0x39, 0x5b, 0xf5, 0x66, 0x76, 0xe0, 0x55, 0x66, 0x55,
-	0x25, 0xda, 0x21, 0x8c, 0x85, 0x3e, 0xe1, 0xf2, 0xf6, 0xfd, 0xbb, 0xa7, 0x3c, 0x1a, 0xc5, 0xe7,
+	0x87, 0xa1, 0xd2, 0x83, 0xa6, 0x70, 0xbe, 0xd3, 0x3e, 0x69, 0xa6, 0x81, 0x6c, 0x3e, 0x03, 0x29,
-	0x8b, 0xd3, 0xff, 0x34, 0x62, 0x12, 0x53, 0xd6, 0x93, 0xd7, 0xa9, 0x5e, 0x9c, 0x72, 0x7c, 0x26,
+	0x90, 0x5b, 0xa3, 0x30, 0x0e, 0x85, 0x6c, 0xb6, 0x79, 0xa4, 0x00, 0x7c, 0x0e, 0x4a, 0xb4, 0x43,
-	0xed, 0x68, 0x02, 0x41, 0x07, 0x40, 0x9d, 0xc6, 0x88, 0x48, 0x59, 0xe2, 0xca, 0xf3, 0x5f, 0x91,
+	0x18, 0x0b, 0x7d, 0xc2, 0xe5, 0xed, 0xfb, 0x67, 0xcf, 0x7f, 0x34, 0x8a, 0xcf, 0x17, 0xa7, 0xff,
-	0xb9, 0xf2, 0x14, 0x2a, 0x2f, 0x92, 0xce, 0x43, 0x2c, 0x30, 0xba, 0x66, 0x39, 0x29, 0x1a, 0x45,
+	0x9d, 0xc4, 0x24, 0xa6, 0xac, 0x27, 0xaf, 0x53, 0xbd, 0x38, 0xe5, 0xf8, 0x9f, 0xb4, 0xa3, 0x09,
-	0x73, 0xfe, 0xa4, 0x68, 0x2c, 0x9a, 0xc6, 0x70, 0xfd, 0x7a, 0x16, 0x68, 0x65, 0x80, 0xc7, 0xe8,
+	0x04, 0x1d, 0x00, 0x75, 0x1a, 0x23, 0x22, 0x65, 0x89, 0x2b, 0xbf, 0xff, 0x8a, 0xcc, 0x95, 0x5f,
-	0x1d, 0xe7, 0xdd, 0xe5, 0xc6, 0xec, 0xfb, 0xcb, 0x8d, 0xd9, 0x0f, 0x97, 0x1b, 0xb3, 0x3f, 0x7d,
+	0xa1, 0xf2, 0x22, 0xe9, 0x3c, 0xc4, 0x02, 0xa3, 0x6b, 0x96, 0x93, 0xa2, 0x51, 0x34, 0xe7, 0x4f,
-	0xdc, 0x98, 0x79, 0xff, 0x71, 0x63, 0xe6, 0xf7, 0x8f, 0x1b, 0x33, 0x5f, 0x6f, 0x8d, 0x7d, 0xce,
+	0x8a, 0xc6, 0xa2, 0x69, 0x0c, 0xd7, 0xaf, 0x67, 0x81, 0x56, 0x06, 0x78, 0x8c, 0xde, 0x71, 0x3e,
-	0x45, 0x0b, 0x33, 0x1e, 0xf2, 0xc6, 0xe8, 0x0f, 0x62, 0x57, 0xfe, 0x45, 0x94, 0x1f, 0xf5, 0xe6,
+	0x5c, 0x6e, 0xcc, 0x7e, 0xbc, 0xdc, 0x98, 0xfd, 0x74, 0xb9, 0x31, 0xfb, 0xe3, 0xe7, 0x8d, 0x99,
-	0x82, 0xfc, 0xeb, 0xf7, 0xe4, 0xcf, 0x00, 0x00, 0x00, 0xff, 0xff, 0x69, 0xef, 0x82, 0x39, 0x40,
+	0x8f, 0x9f, 0x37, 0x66, 0x7e, 0xfd, 0xbc, 0x31, 0xf3, 0xd5, 0xd6, 0xd8, 0x71, 0x2e, 0x5a, 0x98,
-	0x0e, 0x00, 0x00,
+	0xf1, 0x90, 0x37, 0x46, 0x7f, 0x2a, 0xbb, 0xf2, 0x6f, 0xa5, 0x3c, 0xd4, 0x9b, 0x0b, 0xf2, 0xef,
+	0xe2, 0x93, 0xdf, 0x03, 0x00, 0x00, 0xff, 0xff, 0xd7, 0x80, 0xdd, 0x60, 0x74, 0x0e, 0x00, 0x00,
 }
 
 func (m *Params) Marshal() (dAtA []byte, err error) {
@@ -773,6 +783,16 @@ func (m *Params) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
+	if m.RejectUnprotectedTx {
+		i--
+		if m.RejectUnprotectedTx {
+			dAtA[i] = 1
+		} else {
+			dAtA[i] = 0
+		}
+		i--
+		dAtA[i] = 0x30
+	}
 	{
 		size, err := m.ChainConfig.MarshalToSizedBuffer(dAtA[:i])
 		if err != nil {
@@ -1465,6 +1485,9 @@ func (m *Params) Size() (n int) {
 	}
 	l = m.ChainConfig.Size()
 	n += 1 + l + sovEvm(uint64(l))
+	if m.RejectUnprotectedTx {
+		n += 2
+	}
 	return n
 }
 
@@ -1925,6 +1948,26 @@ func (m *Params) Unmarshal(dAtA []byte) error {
 				return err
 			}
 			iNdEx = postIndex
+		case 6:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field RejectUnprotectedTx", wireType)
+			}
+			var v int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowEvm
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				v |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			m.RejectUnprotectedTx = bool(v != 0)
 		default:
 			iNdEx = preIndex
 			skippy, err := skipEvm(dAtA[iNdEx:])

x/evm/types/params.go

@@ -18,16 +18,21 @@ const (
 	DefaultEVMDenom = types.AttoPhoton
 )
 
-// DefaultMinGasMultiplier is 0.5 or 50%
+var (
-var DefaultMinGasMultiplier = sdk.NewDecWithPrec(50, 2)
+	// DefaultMinGasMultiplier is 0.5 or 50%
+	DefaultMinGasMultiplier = sdk.NewDecWithPrec(50, 2)
+
+	DefaultRejectUnprotectedTx = false
+)
 
 // Parameter keys
 var (
-	ParamStoreKeyEVMDenom     = []byte("EVMDenom")
+	ParamStoreKeyEVMDenom            = []byte("EVMDenom")
-	ParamStoreKeyEnableCreate = []byte("EnableCreate")
+	ParamStoreKeyEnableCreate        = []byte("EnableCreate")
-	ParamStoreKeyEnableCall   = []byte("EnableCall")
+	ParamStoreKeyEnableCall          = []byte("EnableCall")
-	ParamStoreKeyExtraEIPs    = []byte("EnableExtraEIPs")
+	ParamStoreKeyExtraEIPs           = []byte("EnableExtraEIPs")
-	ParamStoreKeyChainConfig  = []byte("ChainConfig")
+	ParamStoreKeyChainConfig         = []byte("ChainConfig")
+	ParamStoreKeyRejectUnprotectedTx = []byte("RejectUnprotectedTx")
 
 	// AvailableExtraEIPs define the list of all EIPs that can be enabled by the
 	// EVM interpreter. These EIPs are applied in order and can override the
@@ -57,11 +62,12 @@ func NewParams(evmDenom string, enableCreate, enableCall bool, config ChainConfi
 // ExtraEIPs is empty to prevent overriding the latest hard fork instruction set
 func DefaultParams() Params {
 	return Params{
-		EvmDenom:     DefaultEVMDenom,
+		EvmDenom:            DefaultEVMDenom,
-		EnableCreate: true,
+		EnableCreate:        true,
-		EnableCall:   true,
+		EnableCall:          true,
-		ChainConfig:  DefaultChainConfig(),
+		ChainConfig:         DefaultChainConfig(),
-		ExtraEIPs:    nil,
+		ExtraEIPs:           nil,
+		RejectUnprotectedTx: DefaultRejectUnprotectedTx,
 	}
 }
 
@@ -73,6 +79,7 @@ func (p *Params) ParamSetPairs() paramtypes.ParamSetPairs {
 		paramtypes.NewParamSetPair(ParamStoreKeyEnableCall, &p.EnableCall, validateBool),
 		paramtypes.NewParamSetPair(ParamStoreKeyExtraEIPs, &p.ExtraEIPs, validateEIPs),
 		paramtypes.NewParamSetPair(ParamStoreKeyChainConfig, &p.ChainConfig, validateChainConfig),
+		paramtypes.NewParamSetPair(ParamStoreKeyRejectUnprotectedTx, &p.RejectUnprotectedTx, validateBool),
 	}
 }
 

x/evm/types/tx.pb.go

@@ -81,6 +81,7 @@ func (m *MsgEthereumTx) XXX_DiscardUnknown() {
 var xxx_messageInfo_MsgEthereumTx proto.InternalMessageInfo
 
 // LegacyTx is the transaction data of regular Ethereum transactions.
+// NOTE: All non-protected transactions (i.e non EIP155 signed) will fail if the RejectUnprotectedTx parameter is enabled.
 type LegacyTx struct {
 	// nonce corresponds to the account nonce (transaction sequence).
 	Nonce uint64 `protobuf:"varint,1,opt,name=nonce,proto3" json:"nonce,omitempty"`

x/evm/types/tx_data.go

@@ -46,6 +46,7 @@ type TxData interface {
 	EffectiveCost(baseFee *big.Int) *big.Int
 }
 
+// NOTE: All non-protected transactions (i.e non EIP155 signed) will fail if the RejectUnprotectedTx parameter is enabled.
 func NewTxDataFromTx(tx *ethtypes.Transaction) (TxData, error) {
 	var txData TxData
 	var err error

x/feemarket/module.go

@@ -112,8 +112,8 @@ func (AppModule) Name() string {
 // as the fee market module doesn't expose invariants.
 func (am AppModule) RegisterInvariants(ir sdk.InvariantRegistry) {}
 
-// RegisterQueryService registers a GRPC query service to respond to the
+// RegisterServices registers the GRPC query service and migrator service to respond to the
-// module-specific GRPC queries.
+// module-specific GRPC queries and handle the upgrade store migration for the module.
 func (am AppModule) RegisterServices(cfg module.Configurator) {
 	types.RegisterQueryServer(cfg.QueryServer(), am.keeper)