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Add StateTree leafs & ExtTree data ZKI calculation

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arnaucube
2020-09-09 19:21:09 +02:00
parent aa0bde61d2
commit 69fe471f11
7 changed files with 316 additions and 103 deletions
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25
common/pooll2tx.go
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@@ -27,6 +27,11 @@ func (n Nonce) Bytes() ([5]byte, error) {
return b, nil
}
// BigInt returns the *big.Int representation of the Nonce value
func (n Nonce) BigInt() *big.Int {
return big.NewInt(int64(n))
}
// NonceFromBytes returns Nonce from a [5]byte
func NonceFromBytes(b [5]byte) Nonce {
var nonceBytes [8]byte
@@ -76,7 +81,7 @@ type PoolL2Tx struct {
// [ 32 bits ] tokenID // 4 bytes: [20:24]
// [ 40 bits ] nonce // 5 bytes: [24:29]
// [ 8 bits ] userFee // 1 byte: [29:30]
// [ 1 bits ] toBjjSign // 1 byte: [30:31]
// [ 1 bits ] toBJJSign // 1 byte: [30:31]
// Total bits compressed data: 241 bits // 31 bytes in *big.Int representation
func (tx *PoolL2Tx) TxCompressedData() (*big.Int, error) {
// sigconstant
@@ -102,11 +107,11 @@ func (tx *PoolL2Tx) TxCompressedData() (*big.Int, error) {
}
copy(b[24:29], nonceBytes[:])
b[29] = byte(tx.Fee)
toBjjSign := byte(0)
toBJJSign := byte(0)
if babyjub.PointCoordSign(tx.ToBJJ.X) {
toBjjSign = byte(1)
toBJJSign = byte(1)
}
b[30] = toBjjSign
b[30] = toBJJSign
bi := new(big.Int).SetBytes(SwapEndianness(b[:]))
return bi, nil
@@ -119,7 +124,7 @@ func (tx *PoolL2Tx) TxCompressedData() (*big.Int, error) {
// [ 32 bits ] tokenID // 4 bytes: [14:18]
// [ 40 bits ] nonce // 5 bytes: [18:23]
// [ 8 bits ] userFee // 1 byte: [23:24]
// [ 1 bits ] toBjjSign // 1 byte: [24:25]
// [ 1 bits ] toBJJSign // 1 byte: [24:25]
// Total bits compressed data: 193 bits // 25 bytes in *big.Int representation
func (tx *PoolL2Tx) TxCompressedDataV2() (*big.Int, error) {
amountFloat16, err := utils.NewFloat16(tx.Amount)
@@ -137,11 +142,11 @@ func (tx *PoolL2Tx) TxCompressedDataV2() (*big.Int, error) {
}
copy(b[18:23], nonceBytes[:])
b[23] = byte(tx.Fee)
toBjjSign := byte(0)
toBJJSign := byte(0)
if babyjub.PointCoordSign(tx.ToBJJ.X) {
toBjjSign = byte(1)
toBJJSign = byte(1)
}
b[24] = toBjjSign
b[24] = toBJJSign
bi := new(big.Int).SetBytes(SwapEndianness(b[:]))
return bi, nil
@@ -154,13 +159,13 @@ func (tx *PoolL2Tx) HashToSign() (*big.Int, error) {
return nil, err
}
toEthAddr := EthAddrToBigInt(tx.ToEthAddr)
toBjjAy := tx.ToBJJ.Y
toBJJAy := tx.ToBJJ.Y
rqTxCompressedDataV2, err := tx.TxCompressedDataV2()
if err != nil {
return nil, err
}
return poseidon.Hash([]*big.Int{toCompressedData, toEthAddr, toBjjAy, rqTxCompressedDataV2, EthAddrToBigInt(tx.RqToEthAddr), tx.RqToBJJ.Y})
return poseidon.Hash([]*big.Int{toCompressedData, toEthAddr, toBJJAy, rqTxCompressedDataV2, EthAddrToBigInt(tx.RqToEthAddr), tx.RqToBJJ.Y})
}
// VerifySignature returns true if the signature verification is correct for the given PublicKey