Migrate all packages to use Float40

Migrate all packages to use Float40 & Add more test vectors at common

api/swagger.yml

@@ -2916,7 +2916,7 @@ components:
               example: 101
             l1UserTotalBytes:
               type: integer
-              description: Number of bytes that a L1 user transaction has ([20 bytes] fromEthAddr + [32 bytes] fromBjj-compressed + [6 bytes] fromIdx + [2 bytes] depositAmountFloat16 + [2 bytes] amountFloat16 + [4 bytes] tokenId + [6 bytes] toIdx).
+              description: Number of bytes that a L1 user transaction has ([20 bytes] fromEthAddr + [32 bytes] fromBjj-compressed + [6 bytes] fromIdx + [5 bytes] depositAmountFloat40 + [5 bytes] amountFloat40 + [4 bytes] tokenId + [6 bytes] toIdx).
               example: 72
             maxL1UserTx:
               type: integer

common/ethrollup.go

@@ -24,8 +24,8 @@ const (
 	// RollupConstL1CoordinatorTotalBytes [4 bytes] token + [32 bytes] babyjub + [65 bytes] compressedSignature
 	RollupConstL1CoordinatorTotalBytes = 101
 	// RollupConstL1UserTotalBytes [20 bytes] fromEthAddr + [32 bytes] fromBjj-compressed + [6 bytes] fromIdx +
-	// [2 bytes] depositAmountFloat16 + [2 bytes] amountFloat16 + [4 bytes] tokenId + [6 bytes] toIdx
+	// [5 bytes] depositAmountFloat40 + [5 bytes] amountFloat40 + [4 bytes] tokenId + [6 bytes] toIdx
-	RollupConstL1UserTotalBytes = 72
+	RollupConstL1UserTotalBytes = 78
 	// RollupConstMaxL1UserTx Maximum L1-user transactions allowed to be queued in a batch
 	RollupConstMaxL1UserTx = 128
 	// RollupConstMaxL1Tx Maximum L1 transactions allowed to be queued in a batch

common/l1tx.go

@@ -11,13 +11,6 @@ import (
 	"github.com/iden3/go-iden3-crypto/babyjub"
 )
 
-const (
-	// L1UserTxBytesLen is the length of the byte array that represents the L1Tx
-	L1UserTxBytesLen = 72
-	// L1CoordinatorTxBytesLen is the length of the byte array that represents the L1CoordinatorTx
-	L1CoordinatorTxBytesLen = 101
-)
-
 // L1Tx is a struct that represents a L1 tx
 type L1Tx struct {
 	// Stored in DB: mandatory fileds
@@ -179,45 +172,38 @@ func (tx L1Tx) Tx() Tx {
 // [ 8 bits  ] empty (userFee) // 1 byte
 // [ 40 bits ] empty (nonce) // 5 bytes
 // [ 32 bits ] tokenID // 4 bytes
-// [ 16 bits ] amountFloat16 // 2 bytes
 // [ 48 bits ] toIdx // 6 bytes
 // [ 48 bits ] fromIdx // 6 bytes
 // [ 16 bits ] chainId // 2 bytes
 // [ 32 bits ] empty (signatureConstant) // 4 bytes
-// Total bits compressed data:  241 bits // 31 bytes in *big.Int representation
+// Total bits compressed data:  225 bits // 29 bytes in *big.Int representation
 func (tx L1Tx) TxCompressedData(chainID uint16) (*big.Int, error) {
-	amountFloat16, err := NewFloat16(tx.Amount)
+	var b [29]byte
-	if err != nil {
-		return nil, tracerr.Wrap(err)
-	}
-
-	var b [31]byte
 	// b[0:7] empty: no ToBJJSign, no fee, no nonce
 	copy(b[7:11], tx.TokenID.Bytes())
-	copy(b[11:13], amountFloat16.Bytes())
 	toIdxBytes, err := tx.ToIdx.Bytes()
 	if err != nil {
 		return nil, tracerr.Wrap(err)
 	}
-	copy(b[13:19], toIdxBytes[:])
+	copy(b[11:17], toIdxBytes[:])
 	fromIdxBytes, err := tx.FromIdx.Bytes()
 	if err != nil {
 		return nil, tracerr.Wrap(err)
 	}
-	copy(b[19:25], fromIdxBytes[:])
+	copy(b[17:23], fromIdxBytes[:])
-	binary.BigEndian.PutUint16(b[25:27], chainID)
+	binary.BigEndian.PutUint16(b[23:25], chainID)
-	copy(b[27:31], SignatureConstantBytes[:])
+	copy(b[25:29], SignatureConstantBytes[:])
 
 	bi := new(big.Int).SetBytes(b[:])
 	return bi, nil
 }
 
 // BytesDataAvailability encodes a L1Tx into []byte for the Data Availability
-// [ fromIdx | toIdx | amountFloat16 | Fee ]
+// [ fromIdx | toIdx | amountFloat40 | Fee ]
 func (tx *L1Tx) BytesDataAvailability(nLevels uint32) ([]byte, error) {
 	idxLen := nLevels / 8 //nolint:gomnd
 
-	b := make([]byte, ((nLevels*2)+16+8)/8) //nolint:gomnd
+	b := make([]byte, ((nLevels*2)+40+8)/8) //nolint:gomnd
 
 	fromIdxBytes, err := tx.FromIdx.Bytes()
 	if err != nil {
@@ -231,13 +217,17 @@ func (tx *L1Tx) BytesDataAvailability(nLevels uint32) ([]byte, error) {
 	copy(b[idxLen:idxLen*2], toIdxBytes[6-idxLen:])
 
 	if tx.EffectiveAmount != nil {
-		amountFloat16, err := NewFloat16(tx.EffectiveAmount)
+		amountFloat40, err := NewFloat40(tx.EffectiveAmount)
 		if err != nil {
 			return nil, tracerr.Wrap(err)
 		}
-		copy(b[idxLen*2:idxLen*2+2], amountFloat16.Bytes())
+		amountFloat40Bytes, err := amountFloat40.Bytes()
+		if err != nil {
+			return nil, tracerr.Wrap(err)
 		}
-	// fee = 0 (as is L1Tx) b[10:11]
+		copy(b[idxLen*2:idxLen*2+5], amountFloat40Bytes)
+	}
+	// fee = 0 (as is L1Tx)
 	return b[:], nil
 }
 
@@ -247,7 +237,7 @@ func L1TxFromDataAvailability(b []byte, nLevels uint32) (*L1Tx, error) {
 
 	fromIdxBytes := b[0:idxLen]
 	toIdxBytes := b[idxLen : idxLen*2]
-	amountBytes := b[idxLen*2 : idxLen*2+2]
+	amountBytes := b[idxLen*2 : idxLen*2+5]
 
 	l1tx := L1Tx{}
 	fromIdx, err := IdxFromBytes(ethCommon.LeftPadBytes(fromIdxBytes, 6))
@@ -260,8 +250,8 @@ func L1TxFromDataAvailability(b []byte, nLevels uint32) (*L1Tx, error) {
 		return nil, tracerr.Wrap(err)
 	}
 	l1tx.ToIdx = toIdx
-	l1tx.EffectiveAmount = Float16FromBytes(amountBytes).BigInt()
+	l1tx.EffectiveAmount, err = Float40FromBytes(amountBytes).BigInt()
-	return &l1tx, nil
+	return &l1tx, err
 }
 
 // BytesGeneric returns the generic representation of a L1Tx. This method is
@@ -269,7 +259,7 @@ func L1TxFromDataAvailability(b []byte, nLevels uint32) (*L1Tx, error) {
 // the L1TxData for the ZKInputs (at the HashGlobalInputs), using this method
 // for L1CoordinatorTxs & L1UserTxs (for the ZKInputs case).
 func (tx *L1Tx) BytesGeneric() ([]byte, error) {
-	var b [L1UserTxBytesLen]byte
+	var b [RollupConstL1UserTotalBytes]byte
 	copy(b[0:20], tx.FromEthAddr.Bytes())
 	if tx.FromBJJ != EmptyBJJComp {
 		pkCompL := tx.FromBJJ
@@ -281,22 +271,33 @@ func (tx *L1Tx) BytesGeneric() ([]byte, error) {
 		return nil, tracerr.Wrap(err)
 	}
 	copy(b[52:58], fromIdxBytes[:])
-	depositAmountFloat16, err := NewFloat16(tx.DepositAmount)
+
+	depositAmountFloat40, err := NewFloat40(tx.DepositAmount)
 	if err != nil {
 		return nil, tracerr.Wrap(err)
 	}
-	copy(b[58:60], depositAmountFloat16.Bytes())
+	depositAmountFloat40Bytes, err := depositAmountFloat40.Bytes()
-	amountFloat16, err := NewFloat16(tx.Amount)
 	if err != nil {
 		return nil, tracerr.Wrap(err)
 	}
-	copy(b[60:62], amountFloat16.Bytes())
+	copy(b[58:63], depositAmountFloat40Bytes)
-	copy(b[62:66], tx.TokenID.Bytes())
+
+	amountFloat40, err := NewFloat40(tx.Amount)
+	if err != nil {
+		return nil, tracerr.Wrap(err)
+	}
+	amountFloat40Bytes, err := amountFloat40.Bytes()
+	if err != nil {
+		return nil, tracerr.Wrap(err)
+	}
+	copy(b[63:68], amountFloat40Bytes)
+
+	copy(b[68:72], tx.TokenID.Bytes())
 	toIdxBytes, err := tx.ToIdx.Bytes()
 	if err != nil {
 		return nil, tracerr.Wrap(err)
 	}
-	copy(b[66:72], toIdxBytes[:])
+	copy(b[72:78], toIdxBytes[:])
 	return b[:], nil
 }
 
@@ -313,7 +314,7 @@ func (tx *L1Tx) BytesCoordinatorTx(compressedSignatureBytes []byte) ([]byte, err
 	if tx.UserOrigin {
 		return nil, tracerr.Wrap(fmt.Errorf("Can not calculate BytesCoordinatorTx() for a L1UserTx"))
 	}
-	var b [L1CoordinatorTxBytesLen]byte
+	var b [RollupConstL1CoordinatorTotalBytes]byte
 	v := compressedSignatureBytes[64]
 	s := compressedSignatureBytes[32:64]
 	r := compressedSignatureBytes[0:32]
@@ -329,7 +330,7 @@ func (tx *L1Tx) BytesCoordinatorTx(compressedSignatureBytes []byte) ([]byte, err
 
 // L1UserTxFromBytes decodes a L1Tx from []byte
 func L1UserTxFromBytes(b []byte) (*L1Tx, error) {
-	if len(b) != L1UserTxBytesLen {
+	if len(b) != RollupConstL1UserTotalBytes {
 		return nil, tracerr.Wrap(fmt.Errorf("Can not parse L1Tx bytes, expected length %d, current: %d", 68, len(b)))
 	}
 
@@ -347,13 +348,19 @@ func L1UserTxFromBytes(b []byte) (*L1Tx, error) {
 		return nil, tracerr.Wrap(err)
 	}
 	tx.FromIdx = fromIdx
-	tx.DepositAmount = Float16FromBytes(b[58:60]).BigInt()
+	tx.DepositAmount, err = Float40FromBytes(b[58:63]).BigInt()
-	tx.Amount = Float16FromBytes(b[60:62]).BigInt()
-	tx.TokenID, err = TokenIDFromBytes(b[62:66])
 	if err != nil {
 		return nil, tracerr.Wrap(err)
 	}
-	tx.ToIdx, err = IdxFromBytes(b[66:72])
+	tx.Amount, err = Float40FromBytes(b[63:68]).BigInt()
+	if err != nil {
+		return nil, tracerr.Wrap(err)
+	}
+	tx.TokenID, err = TokenIDFromBytes(b[68:72])
+	if err != nil {
+		return nil, tracerr.Wrap(err)
+	}
+	tx.ToIdx, err = IdxFromBytes(b[72:78])
 	if err != nil {
 		return nil, tracerr.Wrap(err)
 	}
@@ -368,7 +375,7 @@ func signHash(data []byte) []byte {
 
 // L1CoordinatorTxFromBytes decodes a L1Tx from []byte
 func L1CoordinatorTxFromBytes(b []byte, chainID *big.Int, hermezAddress ethCommon.Address) (*L1Tx, error) {
-	if len(b) != L1CoordinatorTxBytesLen {
+	if len(b) != RollupConstL1CoordinatorTotalBytes {
 		return nil, tracerr.Wrap(fmt.Errorf("Can not parse L1CoordinatorTx bytes, expected length %d, current: %d", 101, len(b)))
 	}
 

common/l1tx_test.go

@@ -50,64 +50,110 @@ func TestNewL1CoordinatorTx(t *testing.T) {
 }
 
 func TestL1TxCompressedData(t *testing.T) {
+	// test vectors values generated from javascript implementation (using
+	// PoolL2Tx values)
+	amount, ok := new(big.Int).SetString("343597383670000000000000000000000000000000", 10)
+	require.True(t, ok)
 	tx := L1Tx{
-		FromIdx: 2,
+		FromIdx: (1 << 48) - 1,
-		ToIdx:   3,
+		ToIdx:   (1 << 48) - 1,
-		Amount:  big.NewInt(4),
+		Amount:  amount,
-		TokenID: 5,
+		TokenID: (1 << 32) - 1,
 	}
-	chainID := uint16(0)
+	txCompressedData, err := tx.TxCompressedData(uint16((1 << 16) - 1))
-	txCompressedData, err := tx.TxCompressedData(chainID)
 	assert.NoError(t, err)
+	expectedStr := "ffffffffffffffffffffffffffffffffffffc60be60f"
+	assert.Equal(t, expectedStr, hex.EncodeToString(txCompressedData.Bytes()))
 
-	// test vector value generated from javascript implementation
+	tx = L1Tx{
-	expectedStr := "7307597389635308713748674793997299267459594577423"
+		FromIdx: 0,
-	assert.Equal(t, expectedStr, txCompressedData.String())
+		ToIdx:   0,
-	assert.Equal(t, "0500040000000000030000000000020000c60be60f", hex.EncodeToString(txCompressedData.Bytes()))
+		Amount:  big.NewInt(0),
+		TokenID: 0,
+	}
+	txCompressedData, err = tx.TxCompressedData(uint16(0))
+	assert.NoError(t, err)
+	expectedStr = "c60be60f"
+	assert.Equal(t, expectedStr, hex.EncodeToString(txCompressedData.Bytes()))
+
+	amount, ok = new(big.Int).SetString("63000000000000000", 10)
+	require.True(t, ok)
+	tx = L1Tx{
+		FromIdx: 324,
+		ToIdx:   256,
+		Amount:  amount,
+		TokenID: 123,
+	}
+	txCompressedData, err = tx.TxCompressedData(uint16(1))
+	assert.NoError(t, err)
+	expectedStr = "7b0000000001000000000001440001c60be60f"
+	assert.Equal(t, expectedStr, hex.EncodeToString(txCompressedData.Bytes()))
+
+	tx = L1Tx{
+		FromIdx: 1,
+		ToIdx:   2,
+		TokenID: 3,
+	}
+	txCompressedData, err = tx.TxCompressedData(uint16(0))
+	assert.NoError(t, err)
+	expectedStr = "030000000000020000000000010000c60be60f"
+	assert.Equal(t, expectedStr, hex.EncodeToString(txCompressedData.Bytes()))
 }
 
 func TestBytesDataAvailability(t *testing.T) {
+	// test vectors values generated from javascript implementation
+	amount, ok := new(big.Int).SetString("343597383670000000000000000000000000000000", 10)
+	require.True(t, ok)
 	tx := L1Tx{
-		FromIdx: 2,
+		ToIdx:           (1 << 16) - 1,
-		ToIdx:   3,
+		FromIdx:         (1 << 16) - 1,
-		Amount:  big.NewInt(4),
+		EffectiveAmount: amount,
-		TokenID: 5,
 	}
-	txCompressedData, err := tx.BytesDataAvailability(32)
+	txCompressedData, err := tx.BytesDataAvailability(16)
 	assert.NoError(t, err)
-	assert.Equal(t, "0000000200000003000000", hex.EncodeToString(txCompressedData))
+	assert.Equal(t, "ffffffffffffffffff00", hex.EncodeToString(txCompressedData))
-
+	l1tx, err := L1TxFromDataAvailability(txCompressedData, 16)
-	tx = L1Tx{
-		FromIdx:         2,
-		ToIdx:           3,
-		EffectiveAmount: big.NewInt(4),
-		TokenID:         5,
-	}
-	txCompressedData, err = tx.BytesDataAvailability(32)
-	assert.NoError(t, err)
-	assert.Equal(t, "0000000200000003000400", hex.EncodeToString(txCompressedData))
-}
-
-func TestL1TxFromDataAvailability(t *testing.T) {
-	tx := L1Tx{
-		FromIdx: 2,
-		ToIdx:   3,
-		Amount:  big.NewInt(4),
-	}
-	txCompressedData, err := tx.BytesDataAvailability(32)
-	assert.NoError(t, err)
-	l1tx, err := L1TxFromDataAvailability(txCompressedData, 32)
 	require.NoError(t, err)
 	assert.Equal(t, tx.FromIdx, l1tx.FromIdx)
 	assert.Equal(t, tx.ToIdx, l1tx.ToIdx)
+	assert.Equal(t, tx.EffectiveAmount, l1tx.EffectiveAmount)
 
 	tx = L1Tx{
-		FromIdx:         2,
+		ToIdx:           (1 << 32) - 1,
-		ToIdx:           3,
+		FromIdx:         (1 << 32) - 1,
-		EffectiveAmount: big.NewInt(4),
+		EffectiveAmount: amount,
 	}
 	txCompressedData, err = tx.BytesDataAvailability(32)
 	assert.NoError(t, err)
+	assert.Equal(t, "ffffffffffffffffffffffffff00", hex.EncodeToString(txCompressedData))
+	l1tx, err = L1TxFromDataAvailability(txCompressedData, 32)
+	require.NoError(t, err)
+	assert.Equal(t, tx.FromIdx, l1tx.FromIdx)
+	assert.Equal(t, tx.ToIdx, l1tx.ToIdx)
+	assert.Equal(t, tx.EffectiveAmount, l1tx.EffectiveAmount)
+
+	tx = L1Tx{
+		ToIdx:           0,
+		FromIdx:         0,
+		EffectiveAmount: big.NewInt(0),
+	}
+	txCompressedData, err = tx.BytesDataAvailability(32)
+	assert.NoError(t, err)
+	assert.Equal(t, "0000000000000000000000000000", hex.EncodeToString(txCompressedData))
+	l1tx, err = L1TxFromDataAvailability(txCompressedData, 32)
+	require.NoError(t, err)
+	assert.Equal(t, tx.FromIdx, l1tx.FromIdx)
+	assert.Equal(t, tx.ToIdx, l1tx.ToIdx)
+	assert.Equal(t, tx.EffectiveAmount, l1tx.EffectiveAmount)
+
+	tx = L1Tx{
+		ToIdx:           635,
+		FromIdx:         296,
+		EffectiveAmount: big.NewInt(1000000000000000000),
+	}
+	txCompressedData, err = tx.BytesDataAvailability(32)
+	assert.NoError(t, err)
+	assert.Equal(t, "000001280000027b42540be40000", hex.EncodeToString(txCompressedData))
 	l1tx, err = L1TxFromDataAvailability(txCompressedData, 32)
 	require.NoError(t, err)
 	assert.Equal(t, tx.FromIdx, l1tx.FromIdx)
@@ -172,12 +218,10 @@ func TestL1TxByteParsersCompatibility(t *testing.T) {
 		UserOrigin:    true,
 	}
 
-	expected, err := utils.HexDecode("85dab5b9e2e361d0c208d77be90efcc0439b0a530dd02deb2c81068e7a0f7e327df80b4ab79ee1f41a7def613e73a20c32eece5a000001c638db8be880f00020039c0000053cb88d")
-	require.NoError(t, err)
-
 	encodedData, err := l1Tx.BytesUser()
 	require.NoError(t, err)
-	assert.Equal(t, expected, encodedData)
+	expected := "85dab5b9e2e361d0c208d77be90efcc0439b0a530dd02deb2c81068e7a0f7e327df80b4ab79ee1f41a7def613e73a20c32eece5a000001c638db52540be400459682f0000020039c0000053cb88d"
+	assert.Equal(t, expected, hex.EncodeToString(encodedData))
 }
 
 func TestL1CoordinatorTxByteParsers(t *testing.T) {

common/l2tx.go

@@ -89,11 +89,15 @@ func (tx L2Tx) CalculateTxID() ([TxIDLen]byte, error) {
 	// TokenID
 	b = append(b, tx.TokenID.Bytes()[:]...)
 	// Amount
-	amountFloat16, err := NewFloat16(tx.Amount)
+	amountFloat40, err := NewFloat40(tx.Amount)
 	if err != nil {
 		return txID, tracerr.Wrap(fmt.Errorf("%s: %d", err, tx.Amount))
 	}
-	b = append(b, amountFloat16.Bytes()...)
+	amountFloat40Bytes, err := amountFloat40.Bytes()
+	if err != nil {
+		return txID, tracerr.Wrap(err)
+	}
+	b = append(b, amountFloat40Bytes...)
 	// Nonce
 	nonceBytes, err := tx.Nonce.Bytes()
 	if err != nil {
@@ -170,11 +174,11 @@ func TxIDsFromL2Txs(txs []L2Tx) []TxID {
 }
 
 // BytesDataAvailability encodes a L2Tx into []byte for the Data Availability
-// [ fromIdx | toIdx | amountFloat16 | Fee ]
+// [ fromIdx | toIdx | amountFloat40 | Fee ]
 func (tx L2Tx) BytesDataAvailability(nLevels uint32) ([]byte, error) {
 	idxLen := nLevels / 8 //nolint:gomnd
 
-	b := make([]byte, ((nLevels*2)+16+8)/8) //nolint:gomnd
+	b := make([]byte, ((nLevels*2)+40+8)/8) //nolint:gomnd
 
 	fromIdxBytes, err := tx.FromIdx.Bytes()
 	if err != nil {
@@ -188,13 +192,16 @@ func (tx L2Tx) BytesDataAvailability(nLevels uint32) ([]byte, error) {
 	}
 	copy(b[idxLen:idxLen*2], toIdxBytes[6-idxLen:])
 
-	amountFloat16, err := NewFloat16(tx.Amount)
+	amountFloat40, err := NewFloat40(tx.Amount)
 	if err != nil {
 		return nil, tracerr.Wrap(err)
 	}
-
+	amountFloat40Bytes, err := amountFloat40.Bytes()
-	copy(b[idxLen*2:idxLen*2+2], amountFloat16.Bytes())
+	if err != nil {
-	b[idxLen*2+2] = byte(tx.Fee)
+		return nil, tracerr.Wrap(err)
+	}
+	copy(b[idxLen*2:idxLen*2+5], amountFloat40Bytes)
+	b[idxLen*2+5] = byte(tx.Fee)
 
 	return b[:], nil
 }
@@ -219,7 +226,10 @@ func L2TxFromBytesDataAvailability(b []byte, nLevels int) (*L2Tx, error) {
 		return nil, tracerr.Wrap(err)
 	}
 
-	tx.Amount = Float16FromBytes(b[idxLen*2 : idxLen*2+2]).BigInt()
+	tx.Amount, err = Float40FromBytes(b[idxLen*2 : idxLen*2+5]).BigInt()
-	tx.Fee = FeeSelector(b[idxLen*2+2])
+	if err != nil {
+		return nil, tracerr.Wrap(err)
+	}
+	tx.Fee = FeeSelector(b[idxLen*2+5])
 	return tx, nil
 }

common/l2tx_test.go

@@ -19,7 +19,7 @@ func TestNewL2Tx(t *testing.T) {
 	}
 	l2Tx, err := NewL2Tx(l2Tx)
 	assert.NoError(t, err)
-	assert.Equal(t, "0x02fb52b5d0b9ef2626c11701bb751b2720c76d59946b9a48146ac153bb6e63bf6a", l2Tx.TxID.String())
+	assert.Equal(t, "0x022669acda59b827d20ef5354a3eebd1dffb3972b0a6bf89d18bfd2efa0ab9f41e", l2Tx.TxID.String())
 
 	l2Tx = &L2Tx{
 		FromIdx: 87654,
@@ -30,7 +30,7 @@ func TestNewL2Tx(t *testing.T) {
 	}
 	l2Tx, err = NewL2Tx(l2Tx)
 	assert.NoError(t, err)
-	assert.Equal(t, "0x0276114a8f666fa1ff7dbf34b4a9da577808dc501e3b2760d01fe3ef5473f5737f", l2Tx.TxID.String())
+	assert.Equal(t, "0x029e7499a830f8f5eb17c07da48cf91415710f1bcbe0169d363ff91e81faf92fc2", l2Tx.TxID.String())
 
 	l2Tx = &L2Tx{
 		FromIdx: 87654,
@@ -42,7 +42,7 @@ func TestNewL2Tx(t *testing.T) {
 	}
 	l2Tx, err = NewL2Tx(l2Tx)
 	assert.NoError(t, err)
-	assert.Equal(t, "0x025afb63126d3067f61f633d13e5a51da0551af3a4567a9af2db5321ed04214ff4", l2Tx.TxID.String())
+	assert.Equal(t, "0x0255c70ed20e1b8935232e1b9c5884dbcc88a6e1a3454d24f2d77252eb2bb0b64e", l2Tx.TxID.String())
 
 	l2Tx = &L2Tx{
 		FromIdx: 87654,
@@ -54,7 +54,7 @@ func TestNewL2Tx(t *testing.T) {
 	}
 	l2Tx, err = NewL2Tx(l2Tx)
 	assert.NoError(t, err)
-	assert.Equal(t, "0x02cf390157041c3b1b59f0aaed4da464f0d0d48f1d026e46fd89c7fe1e5aed7fcf", l2Tx.TxID.String())
+	assert.Equal(t, "0x0206b372f967061d1148bbcff679de38120e075141a80a07326d0f514c2efc6ca9", l2Tx.TxID.String())
 
 	l2Tx = &L2Tx{
 		FromIdx: 1,
@@ -66,7 +66,7 @@ func TestNewL2Tx(t *testing.T) {
 	}
 	l2Tx, err = NewL2Tx(l2Tx)
 	assert.NoError(t, err)
-	assert.Equal(t, "0x020ec18eaae67fcd545998841a9c4be09ee3083e12db6ae5e5213a2ecaaa52d5cf", l2Tx.TxID.String())
+	assert.Equal(t, "0x0236f7ea5bccf78ba60baf56c058d235a844f9b09259fd0efa4f5f72a7d4a26618", l2Tx.TxID.String())
 
 	l2Tx = &L2Tx{
 		FromIdx: 999,
@@ -78,7 +78,7 @@ func TestNewL2Tx(t *testing.T) {
 	}
 	l2Tx, err = NewL2Tx(l2Tx)
 	assert.NoError(t, err)
-	assert.Equal(t, "0x02f036223e79fac776de107f50822552cc964ee9fc4caa304613285f6976bcc940", l2Tx.TxID.String())
+	assert.Equal(t, "0x02ac122f5b709ce190129fecbbe35bfd30c70e6433dbd85a8eb743d110906a1dc1", l2Tx.TxID.String())
 
 	l2Tx = &L2Tx{
 		FromIdx: 4444,
@@ -90,25 +90,85 @@ func TestNewL2Tx(t *testing.T) {
 	}
 	l2Tx, err = NewL2Tx(l2Tx)
 	assert.NoError(t, err)
-	assert.Equal(t, "0x029c8aef9ef24531e4cf84e78cbab1018ba1626a5a10afb6b7c356be1b5c28e92c", l2Tx.TxID.String())
+	assert.Equal(t, "0x02c674951a81881b7bc50db3b9e5efd97ac88550c7426ac548720e5057cfba515a", l2Tx.TxID.String())
 }
 
 func TestL2TxByteParsers(t *testing.T) {
-	amount := new(big.Int)
+	// test vectors values generated from javascript implementation
-	amount.SetString("79000000", 10)
+	amount, ok := new(big.Int).SetString("343597383670000000000000000000000000000000", 10)
+	require.True(t, ok)
 	l2Tx := &L2Tx{
-		ToIdx:   256,
+		ToIdx:   (1 << 16) - 1,
+		FromIdx: (1 << 16) - 1,
 		Amount:  amount,
-		FromIdx: 257,
+		Fee:     (1 << 8) - 1,
-		Fee:     201,
 	}
-	// Data from the compatibility test
+	expected := "ffffffffffffffffffff"
-	expected := "00000101000001002b16c9"
+	encodedData, err := l2Tx.BytesDataAvailability(16)
-	encodedData, err := l2Tx.BytesDataAvailability(32)
 	require.NoError(t, err)
 	assert.Equal(t, expected, hex.EncodeToString(encodedData))
 
-	decodedData, err := L2TxFromBytesDataAvailability(encodedData, 32)
+	decodedData, err := L2TxFromBytesDataAvailability(encodedData, 16)
+	require.NoError(t, err)
+	assert.Equal(t, l2Tx, decodedData)
+
+	l2Tx = &L2Tx{
+		ToIdx:   (1 << 32) - 1,
+		FromIdx: (1 << 32) - 1,
+		Amount:  amount,
+		Fee:     (1 << 8) - 1,
+	}
+	expected = "ffffffffffffffffffffffffffff"
+	encodedData, err = l2Tx.BytesDataAvailability(32)
+	require.NoError(t, err)
+	assert.Equal(t, expected, hex.EncodeToString(encodedData))
+
+	decodedData, err = L2TxFromBytesDataAvailability(encodedData, 32)
+	require.NoError(t, err)
+	assert.Equal(t, l2Tx, decodedData)
+
+	l2Tx = &L2Tx{
+		ToIdx:   0,
+		FromIdx: 0,
+		Amount:  big.NewInt(0),
+		Fee:     0,
+	}
+	expected = "0000000000000000000000000000"
+	encodedData, err = l2Tx.BytesDataAvailability(32)
+	require.NoError(t, err)
+	assert.Equal(t, expected, hex.EncodeToString(encodedData))
+
+	decodedData, err = L2TxFromBytesDataAvailability(encodedData, 32)
+	require.NoError(t, err)
+	assert.Equal(t, l2Tx, decodedData)
+
+	l2Tx = &L2Tx{
+		ToIdx:   0,
+		FromIdx: 1061,
+		Amount:  big.NewInt(420000000000),
+		Fee:     127,
+	}
+	expected = "000004250000000010fa56ea007f"
+	encodedData, err = l2Tx.BytesDataAvailability(32)
+	require.NoError(t, err)
+	assert.Equal(t, expected, hex.EncodeToString(encodedData))
+
+	decodedData, err = L2TxFromBytesDataAvailability(encodedData, 32)
+	require.NoError(t, err)
+	assert.Equal(t, l2Tx, decodedData)
+
+	l2Tx = &L2Tx{
+		ToIdx:   256,
+		FromIdx: 257,
+		Amount:  big.NewInt(79000000),
+		Fee:     201,
+	}
+	expected = "00000101000001000004b571c0c9"
+	encodedData, err = l2Tx.BytesDataAvailability(32)
+	require.NoError(t, err)
+	assert.Equal(t, expected, hex.EncodeToString(encodedData))
+
+	decodedData, err = L2TxFromBytesDataAvailability(encodedData, 32)
 	require.NoError(t, err)
 	assert.Equal(t, l2Tx, decodedData)
 }

common/pooll2tx.go

@@ -36,7 +36,7 @@ type PoolL2Tx struct {
 	ToEthAddr ethCommon.Address     `meddler:"to_eth_addr,zeroisnull"`
 	ToBJJ     babyjub.PublicKeyComp `meddler:"to_bjj,zeroisnull"`
 	TokenID   TokenID               `meddler:"token_id"`
-	Amount    *big.Int              `meddler:"amount,bigint"` // TODO: change to float16
+	Amount    *big.Int              `meddler:"amount,bigint"` // TODO: change to float40
 	Fee       FeeSelector           `meddler:"fee"`
 	Nonce     Nonce                 `meddler:"nonce"` // effective 40 bits used
 	State     PoolL2TxState         `meddler:"state"`
@@ -53,7 +53,7 @@ type PoolL2Tx struct {
 	RqToEthAddr       ethCommon.Address     `meddler:"rq_to_eth_addr,zeroisnull"`
 	RqToBJJ           babyjub.PublicKeyComp `meddler:"rq_to_bjj,zeroisnull"`
 	RqTokenID         TokenID               `meddler:"rq_token_id,zeroisnull"`
-	RqAmount          *big.Int              `meddler:"rq_amount,bigintnull"` // TODO: change to float16
+	RqAmount          *big.Int              `meddler:"rq_amount,bigintnull"` // TODO: change to float40
 	RqFee             FeeSelector           `meddler:"rq_fee,zeroisnull"`
 	RqNonce           Nonce                 `meddler:"rq_nonce,zeroisnull"` // effective 48 bits used
 	AbsoluteFee       float64               `meddler:"fee_usd,zeroisnull"`
@@ -122,18 +122,13 @@ func (tx *PoolL2Tx) SetID() error {
 // [ 8 bits  ] userFee // 1 byte
 // [ 40 bits ] nonce // 5 bytes
 // [ 32 bits ] tokenID // 4 bytes
-// [ 16 bits ] amountFloat16 // 2 bytes
 // [ 48 bits ] toIdx // 6 bytes
 // [ 48 bits ] fromIdx // 6 bytes
 // [ 16 bits ] chainId // 2 bytes
 // [ 32 bits ] signatureConstant // 4 bytes
 // Total bits compressed data:  241 bits // 31 bytes in *big.Int representation
 func (tx *PoolL2Tx) TxCompressedData(chainID uint16) (*big.Int, error) {
-	amountFloat16, err := NewFloat16(tx.Amount)
+	var b [29]byte
-	if err != nil {
-		return nil, tracerr.Wrap(err)
-	}
-	var b [31]byte
 
 	toBJJSign := byte(0)
 	pkSign, _ := babyjub.UnpackSignY(tx.ToBJJ)
@@ -149,19 +144,18 @@ func (tx *PoolL2Tx) TxCompressedData(chainID uint16) (*big.Int, error) {
 	}
 	copy(b[2:7], nonceBytes[:])
 	copy(b[7:11], tx.TokenID.Bytes())
-	copy(b[11:13], amountFloat16.Bytes())
 	toIdxBytes, err := tx.ToIdx.Bytes()
 	if err != nil {
 		return nil, tracerr.Wrap(err)
 	}
-	copy(b[13:19], toIdxBytes[:])
+	copy(b[11:17], toIdxBytes[:])
 	fromIdxBytes, err := tx.FromIdx.Bytes()
 	if err != nil {
 		return nil, tracerr.Wrap(err)
 	}
-	copy(b[19:25], fromIdxBytes[:])
+	copy(b[17:23], fromIdxBytes[:])
-	binary.BigEndian.PutUint16(b[25:27], chainID)
+	binary.BigEndian.PutUint16(b[23:25], chainID)
-	copy(b[27:31], SignatureConstantBytes[:])
+	copy(b[25:29], SignatureConstantBytes[:])
 
 	bi := new(big.Int).SetBytes(b[:])
 	return bi, nil
@@ -170,9 +164,9 @@ func (tx *PoolL2Tx) TxCompressedData(chainID uint16) (*big.Int, error) {
 // TxCompressedDataEmpty calculates the TxCompressedData of an empty
 // transaction
 func TxCompressedDataEmpty(chainID uint16) *big.Int {
-	var b [31]byte
+	var b [29]byte
-	binary.BigEndian.PutUint16(b[25:27], chainID)
+	binary.BigEndian.PutUint16(b[23:25], chainID)
-	copy(b[27:31], SignatureConstantBytes[:])
+	copy(b[25:29], SignatureConstantBytes[:])
 	bi := new(big.Int).SetBytes(b[:])
 	return bi
 }
@@ -182,7 +176,7 @@ func TxCompressedDataEmpty(chainID uint16) *big.Int {
 // [ 8 bits  ] userFee // 1 byte
 // [ 40 bits ] nonce // 5 bytes
 // [ 32 bits ] tokenID // 4 bytes
-// [ 16 bits ] amountFloat16 // 2 bytes
+// [ 40 bits ] amountFloat40 // 5 bytes
 // [ 48 bits ] toIdx // 6 bytes
 // [ 48 bits ] fromIdx // 6 bytes
 // Total bits compressed data:  193 bits // 25 bytes in *big.Int representation
@@ -190,11 +184,16 @@ func (tx *PoolL2Tx) TxCompressedDataV2() (*big.Int, error) {
 	if tx.Amount == nil {
 		tx.Amount = big.NewInt(0)
 	}
-	amountFloat16, err := NewFloat16(tx.Amount)
+	amountFloat40, err := NewFloat40(tx.Amount)
 	if err != nil {
 		return nil, tracerr.Wrap(err)
 	}
-	var b [25]byte
+	amountFloat40Bytes, err := amountFloat40.Bytes()
+	if err != nil {
+		return nil, tracerr.Wrap(err)
+	}
+
+	var b [28]byte
 	toBJJSign := byte(0)
 	if tx.ToBJJ != EmptyBJJComp {
 		sign, _ := babyjub.UnpackSignY(tx.ToBJJ)
@@ -210,17 +209,17 @@ func (tx *PoolL2Tx) TxCompressedDataV2() (*big.Int, error) {
 	}
 	copy(b[2:7], nonceBytes[:])
 	copy(b[7:11], tx.TokenID.Bytes())
-	copy(b[11:13], amountFloat16.Bytes())
+	copy(b[11:16], amountFloat40Bytes)
 	toIdxBytes, err := tx.ToIdx.Bytes()
 	if err != nil {
 		return nil, tracerr.Wrap(err)
 	}
-	copy(b[13:19], toIdxBytes[:])
+	copy(b[16:22], toIdxBytes[:])
 	fromIdxBytes, err := tx.FromIdx.Bytes()
 	if err != nil {
 		return nil, tracerr.Wrap(err)
 	}
-	copy(b[19:25], fromIdxBytes[:])
+	copy(b[22:28], fromIdxBytes[:])
 
 	bi := new(big.Int).SetBytes(b[:])
 	return bi, nil
@@ -236,7 +235,7 @@ func (tx *PoolL2Tx) TxCompressedDataV2() (*big.Int, error) {
 // [ 8 bits  ] rqUserFee // 1 byte
 // [ 40 bits ] rqNonce // 5 bytes
 // [ 32 bits ] rqTokenID // 4 bytes
-// [ 16 bits ] rqAmountFloat16 // 2 bytes
+// [ 40 bits ] rqAmountFloat40 // 5 bytes
 // [ 48 bits ] rqToIdx // 6 bytes
 // [ 48 bits ] rqFromIdx // 6 bytes
 // Total bits compressed data:  193 bits // 25 bytes in *big.Int representation
@@ -244,11 +243,16 @@ func (tx *PoolL2Tx) RqTxCompressedDataV2() (*big.Int, error) {
 	if tx.RqAmount == nil {
 		tx.RqAmount = big.NewInt(0)
 	}
-	amountFloat16, err := NewFloat16(tx.RqAmount)
+	amountFloat40, err := NewFloat40(tx.RqAmount)
 	if err != nil {
 		return nil, tracerr.Wrap(err)
 	}
-	var b [25]byte
+	amountFloat40Bytes, err := amountFloat40.Bytes()
+	if err != nil {
+		return nil, tracerr.Wrap(err)
+	}
+
+	var b [28]byte
 	rqToBJJSign := byte(0)
 	if tx.RqToBJJ != EmptyBJJComp {
 		sign, _ := babyjub.UnpackSignY(tx.RqToBJJ)
@@ -264,17 +268,17 @@ func (tx *PoolL2Tx) RqTxCompressedDataV2() (*big.Int, error) {
 	}
 	copy(b[2:7], nonceBytes[:])
 	copy(b[7:11], tx.RqTokenID.Bytes())
-	copy(b[11:13], amountFloat16.Bytes())
+	copy(b[11:16], amountFloat40Bytes)
 	toIdxBytes, err := tx.RqToIdx.Bytes()
 	if err != nil {
 		return nil, tracerr.Wrap(err)
 	}
-	copy(b[13:19], toIdxBytes[:])
+	copy(b[16:22], toIdxBytes[:])
 	fromIdxBytes, err := tx.RqFromIdx.Bytes()
 	if err != nil {
 		return nil, tracerr.Wrap(err)
 	}
-	copy(b[19:25], fromIdxBytes[:])
+	copy(b[22:28], fromIdxBytes[:])
 
 	bi := new(big.Int).SetBytes(b[:])
 	return bi, nil
@@ -287,7 +291,22 @@ func (tx *PoolL2Tx) HashToSign(chainID uint16) (*big.Int, error) {
 	if err != nil {
 		return nil, tracerr.Wrap(err)
 	}
+
+	// e1: [5 bytes AmountFloat40 | 20 bytes ToEthAddr]
+	var e1B [25]byte
+	amountFloat40, err := NewFloat40(tx.Amount)
+	if err != nil {
+		return nil, tracerr.Wrap(err)
+	}
+	amountFloat40Bytes, err := amountFloat40.Bytes()
+	if err != nil {
+		return nil, tracerr.Wrap(err)
+	}
+	copy(e1B[0:5], amountFloat40Bytes)
 	toEthAddr := EthAddrToBigInt(tx.ToEthAddr)
+	copy(e1B[5:25], toEthAddr.Bytes())
+	e1 := new(big.Int).SetBytes(e1B[:])
+
 	rqToEthAddr := EthAddrToBigInt(tx.RqToEthAddr)
 
 	_, toBJJY := babyjub.UnpackSignY(tx.ToBJJ)
@@ -299,7 +318,7 @@ func (tx *PoolL2Tx) HashToSign(chainID uint16) (*big.Int, error) {
 
 	_, rqToBJJY := babyjub.UnpackSignY(tx.RqToBJJ)
 
-	return poseidon.Hash([]*big.Int{toCompressedData, toEthAddr, toBJJY, rqTxCompressedDataV2, rqToEthAddr, rqToBJJY})
+	return poseidon.Hash([]*big.Int{toCompressedData, e1, toBJJY, rqTxCompressedDataV2, rqToEthAddr, rqToBJJY})
 }
 
 // VerifySignature returns true if the signature verification is correct for the given PublicKeyComp

common/pooll2tx_test.go

@@ -21,80 +21,104 @@ func TestNewPoolL2Tx(t *testing.T) {
 	}
 	poolL2Tx, err := NewPoolL2Tx(poolL2Tx)
 	assert.NoError(t, err)
-	assert.Equal(t, "0x02fb52b5d0b9ef2626c11701bb751b2720c76d59946b9a48146ac153bb6e63bf6a", poolL2Tx.TxID.String())
+	assert.Equal(t, "0x022669acda59b827d20ef5354a3eebd1dffb3972b0a6bf89d18bfd2efa0ab9f41e", poolL2Tx.TxID.String())
 }
 
-func TestTxCompressedData(t *testing.T) {
+func TestTxCompressedDataAndTxCompressedDataV2JSVectors(t *testing.T) {
-	chainID := uint16(0)
+	// test vectors values generated from javascript implementation
-	var sk babyjub.PrivateKey
+	var skPositive babyjub.PrivateKey // 'Positive' refers to the sign
-	_, err := hex.Decode(sk[:], []byte("0001020304050607080900010203040506070809000102030405060708090001"))
+	_, err := hex.Decode(skPositive[:], []byte("0001020304050607080900010203040506070809000102030405060708090001"))
 	assert.NoError(t, err)
+
+	var skNegative babyjub.PrivateKey // 'Negative' refers to the sign
+	_, err = hex.Decode(skNegative[:], []byte("0001020304050607080900010203040506070809000102030405060708090002"))
+	assert.NoError(t, err)
+
+	amount, ok := new(big.Int).SetString("343597383670000000000000000000000000000000", 10)
+	require.True(t, ok)
 	tx := PoolL2Tx{
-		FromIdx: 2,
+		FromIdx: (1 << 48) - 1,
-		ToIdx:   3,
+		ToIdx:   (1 << 48) - 1,
-		Amount:  big.NewInt(4),
+		Amount:  amount,
-		TokenID: 5,
+		TokenID: (1 << 32) - 1,
-		Nonce:   6,
+		Nonce:   (1 << 40) - 1,
-		ToBJJ:   sk.Public().Compress(),
+		Fee:     (1 << 3) - 1,
+		ToBJJ:   skPositive.Public().Compress(),
 	}
-	txCompressedData, err := tx.TxCompressedData(chainID)
+	txCompressedData, err := tx.TxCompressedData(uint16((1 << 16) - 1))
-	assert.NoError(t, err)
+	require.NoError(t, err)
-	// test vector value generated from javascript implementation
+	expectedStr := "0107ffffffffffffffffffffffffffffffffffffffffffffffc60be60f"
-	expectedStr := "1766847064778421992193717128424891165872736891548909569553540445094274575"
+	assert.Equal(t, expectedStr, hex.EncodeToString(txCompressedData.Bytes()))
-	assert.Equal(t, expectedStr, txCompressedData.String())
+
-	assert.Equal(t, "010000000000060000000500040000000000030000000000020000c60be60f", hex.EncodeToString(txCompressedData.Bytes()))
+	txCompressedDataV2, err := tx.TxCompressedDataV2()
-	// using a different chainID
+	require.NoError(t, err)
-	txCompressedData, err = tx.TxCompressedData(uint16(100))
+	expectedStr = "0107ffffffffffffffffffffffffffffffffffffffffffffffffffff"
-	assert.NoError(t, err)
+	assert.Equal(t, expectedStr, hex.EncodeToString(txCompressedDataV2.Bytes()))
-	expectedStr = "1766847064778421992193717128424891165872736891548909569553540874591004175"
-	assert.Equal(t, expectedStr, txCompressedData.String())
-	assert.Equal(t, "010000000000060000000500040000000000030000000000020064c60be60f", hex.EncodeToString(txCompressedData.Bytes()))
-	txCompressedData, err = tx.TxCompressedData(uint16(65535))
-	assert.NoError(t, err)
-	expectedStr = "1766847064778421992193717128424891165872736891548909569553821915776017935"
-	assert.Equal(t, expectedStr, txCompressedData.String())
-	assert.Equal(t, "01000000000006000000050004000000000003000000000002ffffc60be60f", hex.EncodeToString(txCompressedData.Bytes()))
 
 	tx = PoolL2Tx{
-		RqFromIdx: 7,
+		FromIdx: 0,
-		RqToIdx:   8,
+		ToIdx:   0,
-		RqAmount:  big.NewInt(9),
+		Amount:  big.NewInt(0),
-		RqTokenID: 10,
+		TokenID: 0,
-		RqNonce:   11,
+		Nonce:   0,
-		RqFee:     12,
+		Fee:     0,
-		RqToBJJ:   sk.Public().Compress(),
+		ToBJJ:   skNegative.Public().Compress(),
 	}
-	rqTxCompressedData, err := tx.RqTxCompressedDataV2()
+	txCompressedData, err = tx.TxCompressedData(uint16(0))
-	assert.NoError(t, err)
+	require.NoError(t, err)
-	// test vector value generated from javascript implementation
+	expectedStr = "c60be60f"
-	expectedStr = "6571340879233176732837827812956721483162819083004853354503"
+	assert.Equal(t, expectedStr, hex.EncodeToString(txCompressedData.Bytes()))
-	assert.Equal(t, expectedStr, rqTxCompressedData.String())
-	assert.Equal(t, "010c000000000b0000000a0009000000000008000000000007", hex.EncodeToString(rqTxCompressedData.Bytes()))
-}
 
-func TestTxCompressedDataV2(t *testing.T) {
+	txCompressedDataV2, err = tx.TxCompressedDataV2()
-	var sk babyjub.PrivateKey
+	require.NoError(t, err)
-	_, err := hex.Decode(sk[:], []byte("0001020304050607080900010203040506070809000102030405060708090001"))
+	assert.Equal(t, "0", txCompressedDataV2.String())
-	assert.NoError(t, err)
+
-	tx := PoolL2Tx{
+	amount, ok = new(big.Int).SetString("63000000000000000", 10)
-		FromIdx: 7,
+	require.True(t, ok)
-		ToIdx:   8,
+	tx = PoolL2Tx{
-		Amount:  big.NewInt(9),
+		FromIdx: 324,
-		TokenID: 10,
+		ToIdx:   256,
-		Nonce:   11,
+		Amount:  amount,
-		Fee:     12,
+		TokenID: 123,
-		ToBJJ:   sk.Public().Compress(),
+		Nonce:   76,
+		Fee:     214,
+		ToBJJ:   skNegative.Public().Compress(),
 	}
-	txCompressedData, err := tx.TxCompressedDataV2()
+	txCompressedData, err = tx.TxCompressedData(uint16(1))
-	assert.NoError(t, err)
+	require.NoError(t, err)
-	// test vector value generated from javascript implementation
+	expectedStr = "d6000000004c0000007b0000000001000000000001440001c60be60f"
-	expectedStr := "6571340879233176732837827812956721483162819083004853354503"
+	assert.Equal(t, expectedStr, hex.EncodeToString(txCompressedData.Bytes()))
-	assert.Equal(t, expectedStr, txCompressedData.String())
-	expected, ok := new(big.Int).SetString(expectedStr, 10)
-	assert.True(t, ok)
 
-	assert.Equal(t, expected.Bytes(), txCompressedData.Bytes())
+	txCompressedDataV2, err = tx.TxCompressedDataV2()
-	assert.Equal(t, "010c000000000b0000000a0009000000000008000000000007", hex.EncodeToString(txCompressedData.Bytes()))
+	require.NoError(t, err)
+	expectedStr = "d6000000004c0000007b3977825f00000000000100000000000144"
+	assert.Equal(t, expectedStr, hex.EncodeToString(txCompressedDataV2.Bytes()))
+
+	tx = PoolL2Tx{
+		FromIdx: 1,
+		ToIdx:   2,
+		TokenID: 3,
+		Nonce:   4,
+		Fee:     5,
+		ToBJJ:   skNegative.Public().Compress(),
+	}
+	txCompressedData, err = tx.TxCompressedData(uint16(0))
+	require.NoError(t, err)
+	expectedStr = "050000000004000000030000000000020000000000010000c60be60f"
+	assert.Equal(t, expectedStr, hex.EncodeToString(txCompressedData.Bytes()))
+
+	tx = PoolL2Tx{
+		FromIdx: 2,
+		ToIdx:   3,
+		TokenID: 4,
+		Nonce:   5,
+		Fee:     6,
+		ToBJJ:   skPositive.Public().Compress(),
+	}
+	txCompressedData, err = tx.TxCompressedData(uint16(0))
+	require.NoError(t, err)
+	expectedStr = "01060000000005000000040000000000030000000000020000c60be60f"
+	assert.Equal(t, expectedStr, hex.EncodeToString(txCompressedData.Bytes()))
 }
 
 func TestRqTxCompressedDataV2(t *testing.T) {
@@ -113,19 +137,16 @@ func TestRqTxCompressedDataV2(t *testing.T) {
 	txCompressedData, err := tx.RqTxCompressedDataV2()
 	assert.NoError(t, err)
 	// test vector value generated from javascript implementation
-	expectedStr := "6571340879233176732837827812956721483162819083004853354503"
+	expectedStr := "110248805340524920412994530176819463725852160917809517418728390663"
 	assert.Equal(t, expectedStr, txCompressedData.String())
 	expected, ok := new(big.Int).SetString(expectedStr, 10)
 	assert.True(t, ok)
 	assert.Equal(t, expected.Bytes(), txCompressedData.Bytes())
-	assert.Equal(t, "010c000000000b0000000a0009000000000008000000000007", hex.EncodeToString(txCompressedData.Bytes()))
+	assert.Equal(t, "010c000000000b0000000a0000000009000000000008000000000007", hex.EncodeToString(txCompressedData.Bytes()))
 }
 
 func TestHashToSign(t *testing.T) {
 	chainID := uint16(0)
-	var sk babyjub.PrivateKey
-	_, err := hex.Decode(sk[:], []byte("0001020304050607080900010203040506070809000102030405060708090001"))
-	assert.NoError(t, err)
 	tx := PoolL2Tx{
 		FromIdx:   2,
 		ToIdx:     3,
@@ -136,7 +157,7 @@ func TestHashToSign(t *testing.T) {
 	}
 	toSign, err := tx.HashToSign(chainID)
 	assert.NoError(t, err)
-	assert.Equal(t, "1469900657138253851938022936440971384682713995864967090251961124784132925291", toSign.String())
+	assert.Equal(t, "2d49ce1d4136e06f64e3eb1f79a346e6ee3e93ceeac909a57806a8d87005c263", hex.EncodeToString(toSign.Bytes()))
 }
 
 func TestVerifyTxSignature(t *testing.T) {
@@ -156,7 +177,7 @@ func TestVerifyTxSignature(t *testing.T) {
 	}
 	toSign, err := tx.HashToSign(chainID)
 	assert.NoError(t, err)
-	assert.Equal(t, "18645218094210271622244722988708640202588315450486586312909439859037906375295", toSign.String())
+	assert.Equal(t, "1571327027383224465388301747239444557034990637650927918405777653988509342917", toSign.String())
 
 	sig := sk.SignPoseidon(toSign)
 	tx.Signature = sig.Compress()

common/zk.go

@@ -112,7 +112,7 @@ type ZKInputs struct {
 	// NewAccount boolean (0/1) flag set 'true' when L1 tx creates a new
 	// account (fromIdx==0)
 	NewAccount []*big.Int `json:"newAccount"` // bool, len: [maxTx]
-	// DepositAmountF encoded as float16
+	// DepositAmountF encoded as float40
 	DepositAmountF []*big.Int `json:"loadAmountF"` // uint16, len: [maxTx]
 	// FromEthAddr
 	FromEthAddr []*big.Int `json:"fromEthAddr"` // ethCommon.Address, len: [maxTx]

db/historydb/historydb_test.go

@@ -611,10 +611,10 @@ func TestTxs(t *testing.T) {
 	assert.Equal(t, common.TxTypeExit, dbL2Txs[3].Type)
 
 	// Tx ID
-	assert.Equal(t, "0x02d709307533c4e3c03f20751fc4d72bc18b225d14f9616525540a64342c7c350d", dbL2Txs[0].TxID.String())
+	assert.Equal(t, "0x024e555248100b69a8aabf6d31719b9fe8a60dcc6c3407904a93c8d2d9ade18ee5", dbL2Txs[0].TxID.String())
-	assert.Equal(t, "0x02e88bc5503f282cca045847668511290e642410a459bb67b1fafcd1b6097c149c", dbL2Txs[1].TxID.String())
+	assert.Equal(t, "0x021ae87ca34d50ff35d98dfc0d7c95f2bf2e4ffeebb82ea71f43a8b0dfa5d36d89", dbL2Txs[1].TxID.String())
-	assert.Equal(t, "0x027911262b43315c0b24942a02fe228274b6e4d57a476bfcdd7a324b3091362c7d", dbL2Txs[2].TxID.String())
+	assert.Equal(t, "0x024abce7f3f2382dc520ed557593f11dea1ee197e55b60402e664facc27aa19774", dbL2Txs[2].TxID.String())
-	assert.Equal(t, "0x02f572b63f2a5c302e1b9337ea6944bfbac3d199e4ddd262b5a53759c72ec10ee6", dbL2Txs[3].TxID.String())
+	assert.Equal(t, "0x02f921ad9e7a6e59606570fe12a7dde0e36014197de0363b9b45e5097d6f2b1dd0", dbL2Txs[3].TxID.String())
 
 	// Tx From and To IDx
 	assert.Equal(t, dbL2Txs[0].ToIdx, dbL2Txs[2].FromIdx)

eth/rollup.go

@@ -462,11 +462,11 @@ func (c *RollupClient) RollupL1UserTxERC20ETH(fromBJJ babyjub.PublicKeyComp, fro
 			}
 			fromIdxBig := big.NewInt(fromIdx)
 			toIdxBig := big.NewInt(toIdx)
-			depositAmountF, err := common.NewFloat16(depositAmount)
+			depositAmountF, err := common.NewFloat40(depositAmount)
 			if err != nil {
 				return nil, tracerr.Wrap(err)
 			}
-			amountF, err := common.NewFloat16(amount)
+			amountF, err := common.NewFloat40(amount)
 			if err != nil {
 				return nil, tracerr.Wrap(err)
 			}
@@ -497,11 +497,11 @@ func (c *RollupClient) RollupL1UserTxERC20Permit(fromBJJ babyjub.PublicKeyComp,
 			}
 			fromIdxBig := big.NewInt(fromIdx)
 			toIdxBig := big.NewInt(toIdx)
-			depositAmountF, err := common.NewFloat16(depositAmount)
+			depositAmountF, err := common.NewFloat40(depositAmount)
 			if err != nil {
 				return nil, tracerr.Wrap(err)
 			}
-			amountF, err := common.NewFloat16(amount)
+			amountF, err := common.NewFloat40(amount)
 			if err != nil {
 				return nil, tracerr.Wrap(err)
 			}
@@ -941,7 +941,7 @@ func (c *RollupClient) RollupForgeBatchArgs(ethTxHash ethCommon.Hash, l1UserTxsL
 	nLevels := c.consts.Verifiers[rollupForgeBatchArgs.VerifierIdx].NLevels
 	lenL1L2TxsBytes := int((nLevels/8)*2 + 2 + 1)
 	numBytesL1TxUser := int(l1UserTxsLen) * lenL1L2TxsBytes
-	numTxsL1Coord := len(aux.EncodedL1CoordinatorTx) / common.L1CoordinatorTxBytesLen
+	numTxsL1Coord := len(aux.EncodedL1CoordinatorTx) / common.RollupConstL1CoordinatorTotalBytes
 	numBytesL1TxCoord := numTxsL1Coord * lenL1L2TxsBytes
 	numBeginL2Tx := numBytesL1TxCoord + numBytesL1TxUser
 	l1UserTxsData := []byte{}
@@ -968,7 +968,7 @@ func (c *RollupClient) RollupForgeBatchArgs(ethTxHash ethCommon.Hash, l1UserTxsL
 		rollupForgeBatchArgs.L2TxsData = append(rollupForgeBatchArgs.L2TxsData, *l2Tx)
 	}
 	for i := 0; i < numTxsL1Coord; i++ {
-		bytesL1Coordinator := aux.EncodedL1CoordinatorTx[i*common.L1CoordinatorTxBytesLen : (i+1)*common.L1CoordinatorTxBytesLen]
+		bytesL1Coordinator := aux.EncodedL1CoordinatorTx[i*common.RollupConstL1CoordinatorTotalBytes : (i+1)*common.RollupConstL1CoordinatorTotalBytes]
 		var signature []byte
 		v := bytesL1Coordinator[0]
 		s := bytesL1Coordinator[1:33]

eth/rollup_test.go

@@ -131,9 +131,9 @@ func TestRollupForgeBatch(t *testing.T) {
 	args.FeeIdxCoordinator = []common.Idx{} // When encoded, 64 times the 0 idx means that no idx to collect fees is specified.
 	l1CoordinatorBytes, err := hex.DecodeString("1c660323607bb113e586183609964a333d07ebe4bef3be82ec13af453bae9590bd7711cdb6abf42f176eadfbe5506fbef5e092e5543733f91b0061d9a7747fa10694a915a6470fa230de387b51e6f4db0b09787867778687b55197ad6d6a86eac000000001")
 	require.NoError(t, err)
-	numTxsL1 := len(l1CoordinatorBytes) / common.L1CoordinatorTxBytesLen
+	numTxsL1 := len(l1CoordinatorBytes) / common.RollupConstL1CoordinatorTotalBytes
 	for i := 0; i < numTxsL1; i++ {
-		bytesL1Coordinator := l1CoordinatorBytes[i*common.L1CoordinatorTxBytesLen : (i+1)*common.L1CoordinatorTxBytesLen]
+		bytesL1Coordinator := l1CoordinatorBytes[i*common.RollupConstL1CoordinatorTotalBytes : (i+1)*common.RollupConstL1CoordinatorTotalBytes]
 		var signature []byte
 		v := bytesL1Coordinator[0]
 		s := bytesL1Coordinator[1:33]

test/ethclient.go

@@ -797,11 +797,11 @@ func (c *Client) RollupL1UserTxERC20ETH(
 	cpy := c.nextBlock().copy()
 	defer func() { c.revertIfErr(err, cpy) }()
 
-	_, err = common.NewFloat16(amount)
+	_, err = common.NewFloat40(amount)
 	if err != nil {
 		return nil, tracerr.Wrap(err)
 	}
-	_, err = common.NewFloat16(depositAmount)
+	_, err = common.NewFloat40(depositAmount)
 	if err != nil {
 		return nil, tracerr.Wrap(err)
 	}

test/zkproof/flows_test.go

@@ -311,7 +311,7 @@ func TestZKInputsExitWithFee0(t *testing.T) {
 	assert.Equal(t, "8737171572459172806192626402462788826264011087579491137542380589998149683116", bb.LocalStateDB().MT.Root().BigInt().String())
 	h, err := zki.HashGlobalData()
 	require.NoError(t, err)
-	assert.Equal(t, "9971598169768987067017223790214537222850903267980994716992761290793474746117", h.String())
+	assert.Equal(t, "12174727174629825205577542675894290689387326670869871089988393208259924373499", h.String())
 	sendProofAndCheckResp(t, zki)
 
 	// batch3
@@ -334,7 +334,7 @@ func TestZKInputsExitWithFee0(t *testing.T) {
 	assert.Equal(t, "18306761925365215381387147754881756804475668085493847010988306480531520370130", bb.LocalStateDB().MT.Root().BigInt().String())
 	h, err = zki.HashGlobalData()
 	require.NoError(t, err)
-	assert.Equal(t, "7992262236065691439683036344554725221924027193771770363772735722054938818364", h.String())
+	assert.Equal(t, "16351950370739934361208977436603065280805499094788807090831605833717933916063", h.String())
 	assert.Equal(t, common.EthAddrToBigInt(tc.Users["Coord"].Addr), zki.EthAddr3[0])
 	assert.Equal(t, "0", zki.EthAddr3[1].String())
 	sendProofAndCheckResp(t, zki)

txprocessor/txprocessor.go

@@ -501,11 +501,11 @@ func (tp *TxProcessor) ProcessL1Tx(exitTree *merkletree.MerkleTree, tx *common.L
 		tp.zki.OnChain[tp.i] = big.NewInt(1)
 
 		// L1Txs
-		depositAmountF16, err := common.NewFloat16(tx.DepositAmount)
+		depositAmountF40, err := common.NewFloat40(tx.DepositAmount)
 		if err != nil {
 			return nil, nil, false, nil, tracerr.Wrap(err)
 		}
-		tp.zki.DepositAmountF[tp.i] = big.NewInt(int64(depositAmountF16))
+		tp.zki.DepositAmountF[tp.i] = big.NewInt(int64(depositAmountF40))
 		tp.zki.FromEthAddr[tp.i] = common.EthAddrToBigInt(tx.FromEthAddr)
 		if tx.FromBJJ != common.EmptyBJJComp {
 			tp.zki.FromBJJCompressed[tp.i] = BJJCompressedTo256BigInts(tx.FromBJJ)

txprocessor/txprocessor_test.go

@@ -1,8 +1,6 @@
 package txprocessor
 
 import (
-	"encoding/binary"
-	"encoding/hex"
 	"io/ioutil"
 	"math/big"
 	"os"
@@ -642,17 +640,16 @@ func TestCreateAccountDepositMaxValue(t *testing.T) {
 
 	users := txsets.GenerateJsUsers(t)
 
-	daMaxHex, err := hex.DecodeString("FFFF")
+	daMaxF40 := common.Float40(0xFFFFFFFFFF)
+	daMaxBI, err := daMaxF40.BigInt()
 	require.NoError(t, err)
-	daMaxF16 := common.Float16(binary.BigEndian.Uint16(daMaxHex))
+	assert.Equal(t, "343597383670000000000000000000000000000000", daMaxBI.String())
-	daMaxBI := daMaxF16.BigInt()
-	assert.Equal(t, "10235000000000000000000000000000000", daMaxBI.String())
 
-	daMax1Hex, err := hex.DecodeString("FFFE")
+	daMax1F40 := common.Float40(0xFFFFFFFFFE)
 	require.NoError(t, err)
-	daMax1F16 := common.Float16(binary.BigEndian.Uint16(daMax1Hex))
+	daMax1BI, err := daMax1F40.BigInt()
-	daMax1BI := daMax1F16.BigInt()
+	require.NoError(t, err)
-	assert.Equal(t, "10225000000000000000000000000000000", daMax1BI.String())
+	assert.Equal(t, "343597383660000000000000000000000000000000", daMax1BI.String())
 
 	l1Txs := []common.L1Tx{
 		{

txselector/txselector_test.go

@@ -424,9 +424,9 @@ func TestPoolL2TxsWithoutEnoughBalance(t *testing.T) {
 	_, _, _, _, _, _, err = txsel.GetL1L2TxSelection(selectionConfig, l1UserTxs)
 	require.NoError(t, err)
 
-	expectedTxID0 := "0x0248bae02b5c8c3847d312bfac3a33ae790616e888f2f711f22aeaff007cde92c2" // 1st TransferToEthAddr
+	expectedTxID0 := "0x028847b86613c0b70be18c8622119ed045b42e4e47d7938fa90bb3d1dc14928965" // 1st TransferToEthAddr
-	expectedTxID1 := "0x0249af018311a393c337ab9174ca2466cba489e49942b4ca4e5c530903671c4aef" // 1st Exit
+	expectedTxID1 := "0x0200b18773dcf56f770d65870fb02041cb59a088fd35b7c3f3df69f8a250b99a42" // 1st Exit
-	expectedTxID2 := "0x0228b93a261a0cdc62f35588c03bd179d31a0807c28afffdb6a7aaf0c4f017e4cf" // 2nd TransferToEthAddr
+	expectedTxID2 := "0x029720ff506153f970f120ac638cd7ee759eeff2c2012e7634a78e4fdc05c04a90" // 2nd TransferToEthAddr
 
 	// batch2
 	// prepare the PoolL2Txs