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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)
fromIdx := Idx(300)
l1Tx := &L1Tx{
ToForgeL1TxsNum: &toForge,
Position: 71,
UserOrigin: true,
ToIdx: 301,
TokenID: 5,
Amount: big.NewInt(1),
LoadAmount: big.NewInt(2),
FromIdx: &fromIdx,
}
l1Tx, err := NewL1Tx(l1Tx)
assert.Nil(t, err)
assert.Equal(t, "0x00000000000001e240004700", l1Tx.TxID.String())
}
func TestNewL1CoordinatorTx(t *testing.T) {
fromIdx := Idx(300)
batchNum := BatchNum(51966)
l1Tx := &L1Tx{
Position: 88,
UserOrigin: false,
ToIdx: 301,
TokenID: 5,
Amount: big.NewInt(1),
LoadAmount: big.NewInt(2),
FromIdx: &fromIdx,
BatchNum: &batchNum,
}
l1Tx, err := NewL1Tx(l1Tx)
assert.Nil(t, err)
assert.Equal(t, "0x01000000000000cafe005800", l1Tx.TxID.String())
}
func TestL1TxByteParsers(t *testing.T) {
var pkComp babyjub.PublicKeyComp
err := pkComp.UnmarshalText([]byte("0x56ca90f80d7c374ae7485e9bcc47d4ac399460948da6aeeb899311097925a72c"))
require.Nil(t, err)
pk, err := pkComp.Decompress()
require.Nil(t, err)
fromIdx := new(Idx)
*fromIdx = 2
l1Tx := &L1Tx{
ToIdx: 3,
TokenID: 5,
Amount: big.NewInt(1),
LoadAmount: big.NewInt(2),
FromIdx: fromIdx,
FromBJJ: pk,
FromEthAddr: ethCommon.HexToAddress("0xc58d29fA6e86E4FAe04DDcEd660d45BCf3Cb2370"),
}
expected, err := utils.HexDecode("c58d29fa6e86e4fae04ddced660d45bcf3cb237056ca90f80d7c374ae7485e9bcc47d4ac399460948da6aeeb899311097925a72c0000000000020002000100000005000000000003")
require.Nil(t, err)
encodedData, err := l1Tx.Bytes()
require.Nil(t, err)
assert.Equal(t, expected, encodedData)
decodedData, err := L1TxFromBytes(encodedData)
require.Nil(t, err)
assert.Equal(t, l1Tx, decodedData)
encodedData2, err := decodedData.Bytes()
require.Nil(t, err)
assert.Equal(t, encodedData, encodedData2)
// expect error if length!=68
_, err = L1TxFromBytes(encodedData[:66])
require.NotNil(t, err)
_, err = L1TxFromBytes([]byte{})
require.NotNil(t, err)
_, err = L1TxFromBytes(nil)
require.NotNil(t, err)
}
func TestL1CoordinatorTxByteParsers(t *testing.T) {
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
err = pkComp.UnmarshalText([]byte("0x56ca90f80d7c374ae7485e9bcc47d4ac399460948da6aeeb899311097925a72c"))
require.Nil(t, err)
pk, err := pkComp.Decompress()
require.Nil(t, err)
bytesMessage1 := []byte("\x19Ethereum Signed Message:\n98")
bytesMessage2 := []byte("I authorize this babyjubjub key for hermez rollup account creation")
babyjub := pk.Compress()
var data []byte
data = append(data, bytesMessage1...)
data = append(data, bytesMessage2...)
data = append(data, babyjub[:]...)
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,
}
bytesCoordinatorL1, err := l1Tx.BytesCoordinatorTx(signature)
require.Nil(t, err)
l1txDecoded, err := L1TxFromCoordinatorBytes(bytesCoordinatorL1)
require.Nil(t, err)
assert.Equal(t, l1Tx, l1txDecoded)
}
func TestL1CoordinatorTxByteParsersCompatibility(t *testing.T) {
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
err = pkComp.UnmarshalText([]byte("0xa2c2807ee39c3b3378738cff85a46a9465bb8fcf44ea597c33da9719be7c259c"))
require.Nil(t, err)
// Data from the compatibility test
expected := "1b186d7122ff7f654cfed3156719774898d573900c86599a885a706dbdffe5ea8cda71e5eb097e115405d84d1e7b464009b434b32c014a2df502d1f065ced8bc3ba2c2807ee39c3b3378738cff85a46a9465bb8fcf44ea597c33da9719be7c259c000000e7"
pk, err := pkComp.Decompress()
require.Nil(t, err)
l1Tx := &L1Tx{
TokenID: 231,
FromBJJ: pk,
}
encodeData, err := l1Tx.BytesCoordinatorTx(signature)
require.Nil(t, err)
assert.Equal(t, expected, hex.EncodeToString(encodeData))
}