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package common
import (
"crypto/ecdsa"
"encoding/hex"
"log"
"math/big"
"testing"
ethCommon "github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
"github.com/iden3/go-iden3-crypto/babyjub"
"github.com/iden3/go-iden3-crypto/utils"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestNewL1UserTx(t *testing.T) {
toForge := int64(123456)
l1Tx := &L1Tx{
ToForgeL1TxsNum: &toForge,
Position: 71,
UserOrigin: true,
ToIdx: 301,
TokenID: 5,
Amount: big.NewInt(1),
LoadAmount: big.NewInt(2),
FromIdx: Idx(300),
}
l1Tx, err := NewL1Tx(l1Tx)
assert.Nil(t, err)
assert.Equal(t, "0x00000000000001e240004700", l1Tx.TxID.String())
}
func TestNewL1CoordinatorTx(t *testing.T) {
batchNum := BatchNum(51966)
l1Tx := &L1Tx{
Position: 88,
UserOrigin: false,
ToIdx: 301,
TokenID: 5,
Amount: big.NewInt(1),
LoadAmount: big.NewInt(2),
FromIdx: Idx(300),
BatchNum: &batchNum,
}
l1Tx, err := NewL1Tx(l1Tx)
assert.Nil(t, err)
assert.Equal(t, "0x01000000000000cafe005800", l1Tx.TxID.String())
}
func TestL1TxCompressedData(t *testing.T) {
tx := L1Tx{
FromIdx: 2,
ToIdx: 3,
Amount: big.NewInt(4),
TokenID: 5,
}
txCompressedData, err := tx.TxCompressedData()
assert.Nil(t, err)
// test vector value generated from javascript implementation
expectedStr := "7307597389635308713748674793997299267460566876160"
assert.Equal(t, expectedStr, txCompressedData.String())
assert.Equal(t, "050004000000000003000000000002000100000000", hex.EncodeToString(txCompressedData.Bytes()))
}
func TestL1userTxByteParsers(t *testing.T) {
var pkComp babyjub.PublicKeyComp
pkCompL := []byte("0x56ca90f80d7c374ae7485e9bcc47d4ac399460948da6aeeb899311097925a72c")
err := pkComp.UnmarshalText(pkCompL)
require.Nil(t, err)
pk, err := pkComp.Decompress()
require.Nil(t, err)
l1Tx := &L1Tx{
UserOrigin: true,
ToIdx: 3,
TokenID: 5,
Amount: big.NewInt(1),
LoadAmount: big.NewInt(2),
FromIdx: 2,
FromBJJ: pk,
FromEthAddr: ethCommon.HexToAddress("0xc58d29fA6e86E4FAe04DDcEd660d45BCf3Cb2370"),
}
encodedData, err := l1Tx.BytesUser()
require.Nil(t, err)
decodedData, err := L1UserTxFromBytes(encodedData)
require.Nil(t, err)
assert.Equal(t, l1Tx, decodedData)
encodedData2, err := decodedData.BytesUser()
require.Nil(t, err)
assert.Equal(t, encodedData, encodedData2)
// expect error if length!=68
_, err = L1UserTxFromBytes(encodedData[:66])
require.NotNil(t, err)
_, err = L1UserTxFromBytes([]byte{})
require.NotNil(t, err)
_, err = L1UserTxFromBytes(nil)
require.NotNil(t, err)
}
func TestL1TxByteParsersCompatibility(t *testing.T) {
// Data from compatibility test
var pkComp babyjub.PublicKeyComp
pkCompB, err := hex.DecodeString("0dd02deb2c81068e7a0f7e327df80b4ab79ee1f41a7def613e73a20c32eece5a")
require.Nil(t, err)
pkCompL := SwapEndianness(pkCompB)
err = pkComp.UnmarshalText([]byte(hex.EncodeToString(pkCompL)))
require.Nil(t, err)
pk, err := pkComp.Decompress()
require.Nil(t, err)
loadAmount := new(big.Int)
loadAmount.SetString("100000000000000000000", 10)
l1Tx := &L1Tx{
ToIdx: 87865485,
TokenID: 2098076,
Amount: big.NewInt(2400000000000000000),
LoadAmount: loadAmount,
FromIdx: Idx(29767899),
FromBJJ: pk,
FromEthAddr: ethCommon.HexToAddress("0x85dab5b9e2e361d0c208d77be90efcc0439b0a53"),
UserOrigin: true,
}
expected, err := utils.HexDecode("85dab5b9e2e361d0c208d77be90efcc0439b0a530dd02deb2c81068e7a0f7e327df80b4ab79ee1f41a7def613e73a20c32eece5a000001c638db8be880f00020039c0000053cb88d")
require.Nil(t, err)
encodedData, err := l1Tx.BytesUser()
require.Nil(t, err)
assert.Equal(t, expected, encodedData)
}
func TestL1CoordinatorTxByteParsers(t *testing.T) {
hermezAddress := ethCommon.HexToAddress("0xD6C850aeBFDC46D7F4c207e445cC0d6B0919BDBe")
chainID := big.NewInt(1337)
chainIDBytes := ethCommon.LeftPadBytes(chainID.Bytes(), 2)
privateKey, err := crypto.HexToECDSA("fad9c8855b740a0b7ed4c221dbad0f33a83a49cad6b3fe8d5817ac83d38b6a19")
require.Nil(t, err)
publicKey := privateKey.Public()
publicKeyECDSA, ok := publicKey.(*ecdsa.PublicKey)
if !ok {
log.Fatal("error casting public key to ECDSA")
}
publicKeyBytes := crypto.FromECDSAPub(publicKeyECDSA)
pubKey, err := crypto.UnmarshalPubkey(publicKeyBytes)
require.Nil(t, err)
fromEthAddr := crypto.PubkeyToAddress(*pubKey)
var pkComp babyjub.PublicKeyComp
pkCompL := []byte("56ca90f80d7c374ae7485e9bcc47d4ac399460948da6aeeb899311097925a72c")
err = pkComp.UnmarshalText(pkCompL)
require.Nil(t, err)
pk, err := pkComp.Decompress()
require.Nil(t, err)
bytesMessage1 := []byte("\x19Ethereum Signed Message:\n120")
bytesMessage2 := []byte("I authorize this babyjubjub key for hermez rollup account creation")
babyjub := pk.Compress()
babyjubB := SwapEndianness(babyjub[:])
var data []byte
data = append(data, bytesMessage1...)
data = append(data, bytesMessage2...)
data = append(data, babyjubB[:]...)
data = append(data, chainIDBytes...)
data = append(data, hermezAddress.Bytes()...)
hash := crypto.Keccak256Hash(data)
signature, err := crypto.Sign(hash.Bytes(), privateKey)
require.Nil(t, err)
// Ethereum adds 27 to v
v := int(signature[64])
signature[64] = byte(v + 27)
l1Tx := &L1Tx{
TokenID: 231,
FromBJJ: pk,
FromEthAddr: fromEthAddr,
Amount: big.NewInt(0),
LoadAmount: big.NewInt(0),
}
bytesCoordinatorL1, err := l1Tx.BytesCoordinatorTx(signature)
require.Nil(t, err)
l1txDecoded, err := L1CoordinatorTxFromBytes(bytesCoordinatorL1, chainID, hermezAddress)
require.Nil(t, err)
assert.Equal(t, l1Tx, l1txDecoded)
bytesCoordinatorL12, err := l1txDecoded.BytesCoordinatorTx(signature)
require.Nil(t, err)
assert.Equal(t, bytesCoordinatorL1, bytesCoordinatorL12)
// expect error if length!=68
_, err = L1CoordinatorTxFromBytes(bytesCoordinatorL1[:66], chainID, hermezAddress)
require.NotNil(t, err)
_, err = L1CoordinatorTxFromBytes([]byte{}, chainID, hermezAddress)
require.NotNil(t, err)
_, err = L1CoordinatorTxFromBytes(nil, chainID, hermezAddress)
require.NotNil(t, err)
}
func TestL1CoordinatorTxByteParsersCompatibility(t *testing.T) {
// Data from compatibility test
var signature []byte
r, err := hex.DecodeString("da71e5eb097e115405d84d1e7b464009b434b32c014a2df502d1f065ced8bc3b")
require.Nil(t, err)
s, err := hex.DecodeString("186d7122ff7f654cfed3156719774898d573900c86599a885a706dbdffe5ea8c")
require.Nil(t, err)
v, err := hex.DecodeString("1b")
require.Nil(t, err)
signature = append(signature, r[:]...)
signature = append(signature, s[:]...)
signature = append(signature, v[:]...)
var pkComp babyjub.PublicKeyComp
pkCompB, err := hex.DecodeString("a2c2807ee39c3b3378738cff85a46a9465bb8fcf44ea597c33da9719be7c259c")
require.Nil(t, err)
pkCompL := SwapEndianness(pkCompB)
err = pkComp.UnmarshalText([]byte(hex.EncodeToString(pkCompL)))
require.Nil(t, err)
// Data from the compatibility test
require.Nil(t, err)
pk, err := pkComp.Decompress()
require.Nil(t, err)
l1Tx := &L1Tx{
TokenID: 231,
FromBJJ: pk,
}
encodeData, err := l1Tx.BytesCoordinatorTx(signature)
require.Nil(t, err)
expected, err := utils.HexDecode("1b186d7122ff7f654cfed3156719774898d573900c86599a885a706dbdffe5ea8cda71e5eb097e115405d84d1e7b464009b434b32c014a2df502d1f065ced8bc3ba2c2807ee39c3b3378738cff85a46a9465bb8fcf44ea597c33da9719be7c259c000000e7")
require.Nil(t, err)
assert.Equal(t, expected, encodeData)
}