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signature verification not working

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This commit is contained in:
Aditya Sripal 2018-08-16 14:04:19 -07:00
parent e114ec508e
commit 91f120c55d
7 changed files with 148 additions and 42 deletions
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26
handlers/ante.go
View File

@ -32,8 +32,8 @@ type internalAnteHandler func(
func AnteHandler(am auth.AccountMapper) sdk.AnteHandler {
return func(sdkCtx sdk.Context, tx sdk.Tx) (newCtx sdk.Context, res sdk.Result, abort bool) {
var (
gasLimit int64
handler internalAnteHandler
gasLimit int64
)
switch tx := tx.(type) {
@ -47,8 +47,15 @@ func AnteHandler(am auth.AccountMapper) sdk.AnteHandler {
return sdkCtx, sdk.ErrInternal(fmt.Sprintf("invalid transaction: %T", tx)).Result(), true
}
/*
fmt.Println("handler begin")
fmt.Println(am.GetAccount(sdkCtx, tx.))
fmt.Println("handler end")*/
newCtx = sdkCtx.WithGasMeter(sdk.NewGasMeter(gasLimit))
// AnteHandlers must have their own defer/recover in order for the
// BaseApp to know how much gas was used! This is because the GasMeter
// is created in the AnteHandler, but if it panics the context won't be
@ -92,12 +99,27 @@ func handleEthTx(sdkCtx sdk.Context, tx sdk.Tx, am auth.AccountMapper) (sdk.Cont
// validate signature
sdkCtx.GasMeter().ConsumeGas(verifySigCost, "ante verify")
_, err := ethTx.VerifySig(chainID)
addr, err := ethTx.VerifySig(chainID)
fmt.Println(addr)
fmt.Println(chainID)
if err != nil {
return sdkCtx, sdk.ErrUnauthorized("signature verification failed").Result(), true
}
// validate AccountNonce (called Sequence in AccountMapper)
acc := am.GetAccount(sdkCtx, addr[:])
seq := acc.GetSequence()
if ethTx.Data.AccountNonce != uint64(seq) {
return sdkCtx, sdk.ErrInvalidSequence(fmt.Sprintf("Wrong AccountNonce: expected %d", seq)).Result(), true
}
err = acc.SetSequence(seq + 1)
if err != nil {
panic(err)
}
am.SetAccount(sdkCtx, acc)
return sdkCtx, sdk.Result{GasWanted: int64(ethTx.Data.GasLimit)}, false
}

80
handlers/ante_test.go
View File

@ -1,6 +1,7 @@
package handlers
import (
"fmt"
"testing"
"math/big"
"crypto/ecdsa"
@ -8,7 +9,10 @@ import (
"github.com/cosmos/ethermint/types"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/x/auth"
stake "github.com/cosmos/cosmos-sdk/x/stake/types"
abci "github.com/tendermint/tendermint/abci/types"
"github.com/tendermint/tendermint/libs/log"
ethcmn "github.com/ethereum/go-ethereum/common"
@ -29,7 +33,7 @@ func TestBadSig(t *testing.T) {
_, res, abort := handler(ctx, tx)
require.True(t, abort, "Antehandler did not abort")
require.Equal(t, sdk.ABCICodeType(0x10004), res.Code, "Result is OK on bad tx")
require.Equal(t, sdk.ABCICodeType(0x10004), res.Code, fmt.Sprintf("Result has wrong code on bad tx: %s", res.Log))
}
@ -47,15 +51,41 @@ func TestInsufficientGas(t *testing.T) {
_, res, abort := handler(ctx, tx)
require.True(t, abort, "Antehandler did not abort")
require.Equal(t, sdk.ABCICodeType(0x1000c), res.Code, "Result is OK on bad tx")
require.Equal(t, sdk.ABCICodeType(0x1000c), res.Code, fmt.Sprintf("Result has wrong code on bad tx: %s", res.Log))
}
func TestWrongNonce(t *testing.T) {
func TestIncorrectNonce(t *testing.T) {
tx := types.NewTestEthTxs(types.TestChainID, []*ecdsa.PrivateKey{types.TestPrivKey1}, []ethcmn.Address{types.TestAddr1})[0]
tx.Data.AccountNonce = 12
ms, key := SetupMultiStore()
ctx := sdk.NewContext(ms, abci.Header{ChainID: types.TestChainID.String()}, false, log.NewNopLogger())
accountMapper := auth.NewAccountMapper(types.NewTestCodec(), key, auth.ProtoBaseAccount)
// Set account in accountMapper
acc := accountMapper.NewAccountWithAddress(ctx, types.TestAddr1[:])
accountMapper.SetAccount(ctx, acc)
handler := AnteHandler(accountMapper)
fmt.Println("start test")
fmt.Println(accountMapper.GetAccount(ctx, types.TestAddr1[:]))
fmt.Println(types.TestAddr1)
fmt.Println("end test")
_, res, abort := handler(ctx, tx)
require.True(t, abort, "Antehandler did not abort")
require.Equal(t, sdk.ABCICodeType(0x10003), res.Code, fmt.Sprintf("Result has wrong code on bad tx: %s", res.Log))
}
func TestValidTx(t *testing.T) {
tx := types.NewTestEthTxs(types.TestChainID, []*ecdsa.PrivateKey{types.TestPrivKey1}, []ethcmn.Address{types.TestAddr1})[0]
ms, key := SetupMultiStore()
ctx := sdk.NewContext(ms, abci.Header{ChainID: types.TestChainID.String()}, false, nil)
@ -64,7 +94,47 @@ func TestWrongNonce(t *testing.T) {
_, res, abort := handler(ctx, tx)
require.True(t, abort, "Antehandler did not abort")
require.Equal(t, sdk.ABCICodeType(0x10004), res.Code, "Result is OK on bad tx")
require.False(t, abort, "Antehandler abort on valid tx")
require.Equal(t, sdk.CodeOK, res.Code, fmt.Sprintf("Result not OK on valid Tx: %s", res.Log))
}
func TestValidEmbeddedTx(t *testing.T) {
cdc := types.NewTestCodec()
// Create msg to be embedded
msgs := []sdk.Msg{stake.NewMsgDelegate(types.TestAddr1[:], types.TestAddr2[:], sdk.Coin{"steak", sdk.NewInt(50)})}
tx := types.NewTestSDKTxs(cdc, types.TestChainID, msgs, []*ecdsa.PrivateKey{types.TestPrivKey1}, []int64{0}, []int64{0}, types.NewStdFee())[0]
ms, key := SetupMultiStore()
ctx := sdk.NewContext(ms, abci.Header{ChainID: types.TestChainID.String()}, false, nil)
accountMapper := auth.NewAccountMapper(types.NewTestCodec(), key, auth.ProtoBaseAccount)
handler := AnteHandler(accountMapper)
_, res, abort := handler(ctx, tx)
require.False(t, abort, "Antehandler abort on valid embedded tx")
require.Equal(t, sdk.CodeOK, res.Code, fmt.Sprintf("Result not OK on valid Tx: %s", res.Log))
}
/*
func TestInvalidEmbeddedTx(t *testing.T) {
cdc := types.NewTestCodec()
// Create msg to be embedded
msgs := []sdk.Msg{stake.NewMsgCreateValidator(types.TestAddr1[:], nil, sdk.Coin{"steak", sdk.NewInt(50)}, stake.Description{})}
tx := types.NewTestSDKTxs(cdc, types.TestChainID, msgs, []*ecdsa.PrivateKey{types.TestPrivKey1}, []int64{0}, []int64{0}, types.NewStdFee())[0]
ms, key := SetupMultiStore()
ctx := sdk.NewContext(ms, abci.Header{ChainID: types.TestChainID.String()}, false, nil)
accountMapper := auth.NewAccountMapper(types.NewTestCodec(), key, auth.ProtoBaseAccount)
handler := AnteHandler(accountMapper)
_, res, abort := handler(ctx, tx)
require.True(t, abort, "Antehandler did not abort on invalid embedded tx")
require.Equal(t, sdk.ABCICodeType(0x1000c), res.Code, "Result is OK on bad tx")
}
*/

10
types/test_common.go
View File

@ -7,6 +7,7 @@ import (
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/wire"
"github.com/cosmos/cosmos-sdk/x/auth"
stake "github.com/cosmos/cosmos-sdk/x/stake/types"
ethcrypto "github.com/ethereum/go-ethereum/crypto"
ethtypes "github.com/ethereum/go-ethereum/core/types"
@ -31,10 +32,13 @@ func NewTestCodec() *wire.Codec {
RegisterWire(codec)
codec.RegisterConcrete(&sdk.TestMsg{}, "test/TestMsg", nil)
// Register any desired SDK msgs to be embedded
stake.RegisterWire(codec)
return codec
}
func newStdFee() auth.StdFee {
func NewStdFee() auth.StdFee {
return auth.NewStdFee(5000, sdk.NewCoin("photon", 150))
}
@ -46,7 +50,7 @@ func newTestEmbeddedTx(
sigs := make([][]byte, len(pKeys))
for i, priv := range pKeys {
signEtx := EmbeddedTxSign{chainID.String(), accNums[i], seqs[i], msgs, newStdFee()}
signEtx := EmbeddedTxSign{chainID.String(), accNums[i], seqs[i], msgs, fee}
signBytes, err := signEtx.Bytes()
if err != nil {
@ -86,7 +90,7 @@ func NewTestEthTxs(chainID sdk.Int, pKeys []*ecdsa.PrivateKey, addrs []ethcmn.Ad
for i, priv := range pKeys {
emintTx := NewTransaction(
uint64(i), addrs[i], sdk.NewInt(10), 100, sdk.NewInt(100), nil,
uint64(i), addrs[i], sdk.NewInt(10), 1000, sdk.NewInt(100), nil,
)
emintTx.Sign(chainID, priv)

42
types/tx.go
View File

@ -182,31 +182,16 @@ func (tx Transaction) VerifySig(chainID *big.Int) (ethcmn.Address, error) {
}
}
var signBytes ethcmn.Hash
if tx.Data.Signature.v.BitLen() < 8 {
v := tx.Data.Signature.v.Uint64()
if v == 27 || v == 28 {
// Unprotected tx has no cross-chain replay protection
signBytes = rlpHash([]interface{}{
tx.Data.AccountNonce,
tx.Data.Price,
tx.Data.GasLimit,
tx.Data.Recipient,
tx.Data.Amount,
tx.Data.Payload,
})
}
} else {
signBytes = rlpHash([]interface{}{
tx.Data.AccountNonce,
tx.Data.Price,
tx.Data.GasLimit,
tx.Data.Recipient,
tx.Data.Amount,
tx.Data.Payload,
chainID, uint(0), uint(0),
signBytes := rlpHash([]interface{}{
tx.Data.AccountNonce,
tx.Data.Price,
tx.Data.GasLimit,
tx.Data.Recipient,
tx.Data.Amount,
tx.Data.Payload,
chainID, uint(0), uint(0),
})
}
sig := recoverEthSig(tx.Data.Signature, chainID)
@ -279,6 +264,15 @@ func (tx Transaction) GetEmbeddedTx(codec *wire.Codec) (EmbeddedTx, sdk.Error) {
return etx, nil
}
// Copies Ethereum tx's Protected function
func (tx Transaction) protected() bool {
if tx.Data.Signature.v.BitLen() <= 8 {
v := tx.Data.Signature.v.Uint64()
return v != 27 && v != 28
}
return true
}
// ----------------------------------------------------------------------------
// embedded SDK transaction
// ----------------------------------------------------------------------------

23
types/tx_test.go
View File

@ -53,7 +53,7 @@ func TestHasEmbeddedTx(t *testing.T) {
sdkTxs := NewTestSDKTxs(
testCodec, TestChainID, msgs, []*ecdsa.PrivateKey{TestPrivKey1},
[]int64{0}, []int64{0}, newStdFee(),
[]int64{0}, []int64{0}, NewStdFee(),
)
require.True(t, sdkTxs[0].HasEmbeddedTx(TestSDKAddress))
@ -76,7 +76,7 @@ func TestGetEmbeddedTx(t *testing.T) {
)
sdkTxs := NewTestSDKTxs(
testCodec, TestChainID, msgs, []*ecdsa.PrivateKey{TestPrivKey1},
[]int64{0}, []int64{0}, newStdFee(),
[]int64{0}, []int64{0}, NewStdFee(),
)
etx, err := sdkTxs[0].GetEmbeddedTx(testCodec)
@ -102,7 +102,7 @@ func TestTransactionGetMsgs(t *testing.T) {
expectedMsgs := []sdk.Msg{sdk.NewTestMsg(sdk.AccAddress(TestAddr1.Bytes()))}
etx := newTestEmbeddedTx(
TestChainID, expectedMsgs, []*ecdsa.PrivateKey{TestPrivKey1},
[]int64{0}, []int64{0}, newStdFee(),
[]int64{0}, []int64{0}, NewStdFee(),
)
msgs = etx.GetMsgs()
@ -114,13 +114,26 @@ func TestGetRequiredSigners(t *testing.T) {
msgs := []sdk.Msg{sdk.NewTestMsg(sdk.AccAddress(TestAddr1.Bytes()))}
etx := newTestEmbeddedTx(
TestChainID, msgs, []*ecdsa.PrivateKey{TestPrivKey1},
[]int64{0}, []int64{0}, newStdFee(),
[]int64{0}, []int64{0}, NewStdFee(),
)
signers := etx.(EmbeddedTx).GetRequiredSigners()
require.Equal(t, []sdk.AccAddress{sdk.AccAddress(TestAddr1.Bytes())}, signers)
}
func TestVerifySig(t *testing.T) {
ethTx := NewTestEthTxs(
TestChainID,
[]*ecdsa.PrivateKey{TestPrivKey1},
[]ethcmn.Address{TestAddr1},
)[0]
addr, err := ethTx.VerifySig(TestChainID.BigInt())
require.Nil(t, err, "Sig verification failed")
require.Equal(t, TestAddr1, addr, "Address is not the same")
}
func TestTxDecoder(t *testing.T) {
testCodec := NewTestCodec()
txDecoder := TxDecoder(testCodec, TestSDKAddress)
@ -141,7 +154,7 @@ func TestTxDecoder(t *testing.T) {
// create embedded transaction and encode
etx := newTestEmbeddedTx(
TestChainID, msgs, []*ecdsa.PrivateKey{TestPrivKey1},
[]int64{0}, []int64{0}, newStdFee(),
[]int64{0}, []int64{0}, NewStdFee(),
)
payload := testCodec.MustMarshalBinary(etx)

2
types/utils_test.go
View File

@ -13,7 +13,7 @@ func TestValidateSigner(t *testing.T) {
msgs := []sdk.Msg{sdk.NewTestMsg(sdk.AccAddress(TestAddr1.Bytes()))}
// create message signing structure
signEtx := EmbeddedTxSign{TestChainID.String(), 0, 0, msgs, newStdFee()}
signEtx := EmbeddedTxSign{TestChainID.String(), 0, 0, msgs, NewStdFee()}
// create signing bytes and sign
signBytes, err := signEtx.Bytes()

3
types/wire.go
View File

@ -3,6 +3,7 @@ package types
import (
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/wire"
"github.com/cosmos/cosmos-sdk/x/auth"
)
var typesCodec = wire.NewCodec()
@ -15,6 +16,8 @@ func init() {
// codec.
func RegisterWire(codec *wire.Codec) {
sdk.RegisterWire(codec)
wire.RegisterCrypto(codec)
auth.RegisterWire(codec)
codec.RegisterConcrete(&EthSignature{}, "types/EthSignature", nil)
codec.RegisterConcrete(TxData{}, "types/TxData", nil)
codec.RegisterConcrete(Transaction{}, "types/Transaction", nil)