mirror of
https://github.com/tornadocash/tornado-core.git
synced 2024-11-22 09:47:13 +01:00
355 lines
15 KiB
JavaScript
355 lines
15 KiB
JavaScript
/* global artifacts, web3, contract */
|
|
require('chai')
|
|
.use(require('bn-chai')(web3.utils.BN))
|
|
.use(require('chai-as-promised'))
|
|
.should()
|
|
const fs = require('fs')
|
|
|
|
const { toBN, toHex } = require('web3-utils')
|
|
const { takeSnapshot, revertSnapshot } = require('../lib/ganacheHelper')
|
|
|
|
const Mixer = artifacts.require('./ERC20Mixer.sol')
|
|
const Token = artifacts.require('./ERC20Mock.sol')
|
|
const USDTToken = artifacts.require('./IUSDT.sol')
|
|
const { ETH_AMOUNT, TOKEN_AMOUNT, MERKLE_TREE_HEIGHT, EMPTY_ELEMENT, ERC20_TOKEN } = process.env
|
|
|
|
const websnarkUtils = require('websnark/src/utils')
|
|
const buildGroth16 = require('websnark/src/groth16')
|
|
const stringifyBigInts = require('websnark/tools/stringifybigint').stringifyBigInts
|
|
const snarkjs = require('snarkjs')
|
|
const bigInt = snarkjs.bigInt
|
|
const crypto = require('crypto')
|
|
const circomlib = require('circomlib')
|
|
const MerkleTree = require('../lib/MerkleTree')
|
|
|
|
const rbigint = (nbytes) => snarkjs.bigInt.leBuff2int(crypto.randomBytes(nbytes))
|
|
const pedersenHash = (data) => circomlib.babyJub.unpackPoint(circomlib.pedersenHash.hash(data))[0]
|
|
|
|
function generateDeposit() {
|
|
let deposit = {
|
|
secret: rbigint(31),
|
|
nullifier: rbigint(31),
|
|
}
|
|
const preimage = Buffer.concat([deposit.nullifier.leInt2Buff(31), deposit.secret.leInt2Buff(31)])
|
|
deposit.commitment = pedersenHash(preimage)
|
|
return deposit
|
|
}
|
|
|
|
function getRandomReceiver() {
|
|
let receiver = rbigint(20)
|
|
while (toHex(receiver.toString()).length !== 42) {
|
|
receiver = rbigint(20)
|
|
}
|
|
return receiver
|
|
}
|
|
|
|
contract('ERC20Mixer', accounts => {
|
|
let mixer
|
|
let token
|
|
let usdtToken
|
|
const sender = accounts[0]
|
|
const operator = accounts[0]
|
|
const levels = MERKLE_TREE_HEIGHT || 16
|
|
const zeroValue = EMPTY_ELEMENT || 1337
|
|
let tokenDenomination = TOKEN_AMOUNT || '1000000000000000000' // 1 ether
|
|
const value = ETH_AMOUNT || '1000000000000000000' // 1 ether
|
|
let snapshotId
|
|
let prefix = 'test'
|
|
let tree
|
|
const fee = bigInt(ETH_AMOUNT).shr(1) || bigInt(1e17)
|
|
const receiver = getRandomReceiver()
|
|
const relayer = accounts[1]
|
|
let groth16
|
|
let circuit
|
|
let proving_key
|
|
|
|
before(async () => {
|
|
tree = new MerkleTree(
|
|
levels,
|
|
zeroValue,
|
|
null,
|
|
prefix,
|
|
)
|
|
mixer = await Mixer.deployed()
|
|
if (ERC20_TOKEN) {
|
|
token = await Token.at(ERC20_TOKEN)
|
|
usdtToken = await USDTToken.at(ERC20_TOKEN)
|
|
} else {
|
|
token = await Token.deployed()
|
|
await token.mint(sender, tokenDenomination)
|
|
}
|
|
snapshotId = await takeSnapshot()
|
|
groth16 = await buildGroth16()
|
|
circuit = require('../build/circuits/withdraw.json')
|
|
proving_key = fs.readFileSync('build/circuits/withdraw_proving_key.bin').buffer
|
|
})
|
|
|
|
describe('#constructor', () => {
|
|
it('should initialize', async () => {
|
|
const tokenFromContract = await mixer.token()
|
|
tokenFromContract.should.be.equal(token.address)
|
|
})
|
|
})
|
|
|
|
describe('#deposit', () => {
|
|
it('should work', async () => {
|
|
const commitment = 43
|
|
await token.approve(mixer.address, tokenDenomination)
|
|
|
|
let { logs } = await mixer.deposit(commitment, { value, from: sender })
|
|
|
|
logs[0].event.should.be.equal('Deposit')
|
|
logs[0].args.commitment.should.be.eq.BN(toBN(commitment))
|
|
logs[0].args.leafIndex.should.be.eq.BN(toBN(0))
|
|
})
|
|
})
|
|
|
|
describe('#withdraw', () => {
|
|
it('should work', async () => {
|
|
const deposit = generateDeposit()
|
|
const user = accounts[4]
|
|
await tree.insert(deposit.commitment)
|
|
await token.mint(user, tokenDenomination)
|
|
|
|
const balanceUserBefore = await token.balanceOf(user)
|
|
await token.approve(mixer.address, tokenDenomination, { from: user })
|
|
// Uncomment to measure gas usage
|
|
// let gas = await mixer.deposit.estimateGas(toBN(deposit.commitment.toString()), { value, from: user, gasPrice: '0' })
|
|
// console.log('deposit gas:', gas)
|
|
await mixer.deposit(toBN(deposit.commitment.toString()), { value, from: user, gasPrice: '0' })
|
|
|
|
const balanceUserAfter = await token.balanceOf(user)
|
|
balanceUserAfter.should.be.eq.BN(toBN(balanceUserBefore).sub(toBN(tokenDenomination)))
|
|
|
|
const { root, path_elements, path_index } = await tree.path(0)
|
|
// Circuit input
|
|
const input = stringifyBigInts({
|
|
// public
|
|
root,
|
|
nullifierHash: pedersenHash(deposit.nullifier.leInt2Buff(31)),
|
|
relayer: operator,
|
|
receiver,
|
|
fee,
|
|
|
|
// private
|
|
nullifier: deposit.nullifier,
|
|
secret: deposit.secret,
|
|
pathElements: path_elements,
|
|
pathIndex: path_index,
|
|
})
|
|
|
|
|
|
const proof = await websnarkUtils.genWitnessAndProve(groth16, input, circuit, proving_key)
|
|
const { pi_a, pi_b, pi_c, publicSignals } = websnarkUtils.toSolidityInput(proof)
|
|
|
|
const balanceMixerBefore = await token.balanceOf(mixer.address)
|
|
const balanceRelayerBefore = await token.balanceOf(relayer)
|
|
const ethBalanceOperatorBefore = await web3.eth.getBalance(operator)
|
|
const balanceRecieverBefore = await token.balanceOf(toHex(receiver.toString()))
|
|
const ethBalanceRecieverBefore = await web3.eth.getBalance(toHex(receiver.toString()))
|
|
let isSpent = await mixer.isSpent(input.nullifierHash.toString(16).padStart(66, '0x00000'))
|
|
isSpent.should.be.equal(false)
|
|
// Uncomment to measure gas usage
|
|
// gas = await mixer.withdraw.estimateGas(pi_a, pi_b, pi_c, publicSignals, { from: relayer, gasPrice: '0' })
|
|
// console.log('withdraw gas:', gas)
|
|
const { logs } = await mixer.withdraw(pi_a, pi_b, pi_c, publicSignals, { from: relayer, gasPrice: '0' })
|
|
|
|
const balanceMixerAfter = await token.balanceOf(mixer.address)
|
|
const balanceRelayerAfter = await token.balanceOf(relayer)
|
|
const ethBalanceOperatorAfter = await web3.eth.getBalance(operator)
|
|
const balanceRecieverAfter = await token.balanceOf(toHex(receiver.toString()))
|
|
const ethBalanceRecieverAfter = await web3.eth.getBalance(toHex(receiver.toString()))
|
|
const feeBN = toBN(fee.toString())
|
|
balanceMixerAfter.should.be.eq.BN(toBN(balanceMixerBefore).sub(toBN(value)))
|
|
balanceRelayerAfter.should.be.eq.BN(toBN(balanceRelayerBefore))
|
|
ethBalanceOperatorAfter.should.be.eq.BN(toBN(ethBalanceOperatorBefore))
|
|
balanceRecieverAfter.should.be.eq.BN(toBN(balanceRecieverBefore).add(toBN(tokenDenomination).sub(feeBN)))
|
|
ethBalanceRecieverAfter.should.be.eq.BN(toBN(ethBalanceRecieverBefore).add(toBN(value)))
|
|
|
|
logs[0].event.should.be.equal('Withdraw')
|
|
logs[0].args.nullifierHash.should.be.eq.BN(toBN(input.nullifierHash.toString()))
|
|
logs[0].args.relayer.should.be.eq.BN(operator)
|
|
logs[0].args.fee.should.be.eq.BN(feeBN)
|
|
isSpent = await mixer.isSpent(input.nullifierHash.toString(16).padStart(66, '0x00000'))
|
|
isSpent.should.be.equal(true)
|
|
})
|
|
|
|
it.skip('should work with REAL USDT', async () => {
|
|
// dont forget to specify your token in .env
|
|
// USDT decimals is 6, so TOKEN_AMOUNT=1000000
|
|
// and sent `tokenDenomination` to accounts[0] (0x90F8bf6A479f320ead074411a4B0e7944Ea8c9C1)
|
|
// run ganache as
|
|
// ganache-cli --fork https://kovan.infura.io/v3/27a9649f826b4e31a83e07ae09a87448@13147586 -d --keepAliveTimeout 20
|
|
const deposit = generateDeposit()
|
|
const user = accounts[4]
|
|
const userBal = await usdtToken.balanceOf(user)
|
|
console.log('userBal', userBal.toString())
|
|
const senderBal = await usdtToken.balanceOf(sender)
|
|
console.log('senderBal', senderBal.toString())
|
|
await tree.insert(deposit.commitment)
|
|
await usdtToken.transfer(user, tokenDenomination, { from: sender })
|
|
console.log('transfer done')
|
|
|
|
const balanceUserBefore = await usdtToken.balanceOf(user)
|
|
console.log('balanceUserBefore', balanceUserBefore.toString())
|
|
await usdtToken.approve(mixer.address, tokenDenomination, { from: user })
|
|
console.log('approve done')
|
|
const allowanceUser = await usdtToken.allowance(user, mixer.address)
|
|
console.log('allowanceUser', allowanceUser.toString())
|
|
await mixer.deposit(toBN(deposit.commitment.toString()), { value, from: user, gasPrice: '0' })
|
|
console.log('deposit done')
|
|
|
|
const balanceUserAfter = await usdtToken.balanceOf(user)
|
|
balanceUserAfter.should.be.eq.BN(toBN(balanceUserBefore).sub(toBN(tokenDenomination)))
|
|
|
|
const { root, path_elements, path_index } = await tree.path(0)
|
|
|
|
// Circuit input
|
|
const input = stringifyBigInts({
|
|
// public
|
|
root,
|
|
nullifierHash: pedersenHash(deposit.nullifier.leInt2Buff(31)),
|
|
relayer: operator,
|
|
receiver,
|
|
fee,
|
|
|
|
// private
|
|
nullifier: deposit.nullifier,
|
|
secret: deposit.secret,
|
|
pathElements: path_elements,
|
|
pathIndex: path_index,
|
|
})
|
|
|
|
|
|
const proof = await websnarkUtils.genWitnessAndProve(groth16, input, circuit, proving_key)
|
|
const { pi_a, pi_b, pi_c, publicSignals } = websnarkUtils.toSolidityInput(proof)
|
|
|
|
const balanceMixerBefore = await usdtToken.balanceOf(mixer.address)
|
|
const balanceRelayerBefore = await usdtToken.balanceOf(relayer)
|
|
const ethBalanceOperatorBefore = await web3.eth.getBalance(operator)
|
|
const balanceRecieverBefore = await usdtToken.balanceOf(toHex(receiver.toString()))
|
|
const ethBalanceRecieverBefore = await web3.eth.getBalance(toHex(receiver.toString()))
|
|
let isSpent = await mixer.isSpent(input.nullifierHash.toString(16).padStart(66, '0x00000'))
|
|
isSpent.should.be.equal(false)
|
|
|
|
// Uncomment to measure gas usage
|
|
// gas = await mixer.withdraw.estimateGas(pi_a, pi_b, pi_c, publicSignals, { from: relayer, gasPrice: '0' })
|
|
// console.log('withdraw gas:', gas)
|
|
const { logs } = await mixer.withdraw(pi_a, pi_b, pi_c, publicSignals, { from: relayer, gasPrice: '0' })
|
|
|
|
const balanceMixerAfter = await usdtToken.balanceOf(mixer.address)
|
|
const balanceRelayerAfter = await usdtToken.balanceOf(relayer)
|
|
const ethBalanceOperatorAfter = await web3.eth.getBalance(operator)
|
|
const balanceRecieverAfter = await usdtToken.balanceOf(toHex(receiver.toString()))
|
|
const ethBalanceRecieverAfter = await web3.eth.getBalance(toHex(receiver.toString()))
|
|
const feeBN = toBN(fee.toString())
|
|
balanceMixerAfter.should.be.eq.BN(toBN(balanceMixerBefore).sub(toBN(tokenDenomination)))
|
|
balanceRelayerAfter.should.be.eq.BN(toBN(balanceRelayerBefore))
|
|
ethBalanceOperatorAfter.should.be.eq.BN(toBN(ethBalanceOperatorBefore).add(feeBN))
|
|
balanceRecieverAfter.should.be.eq.BN(toBN(balanceRecieverBefore).add(toBN(tokenDenomination)))
|
|
ethBalanceRecieverAfter.should.be.eq.BN(toBN(ethBalanceRecieverBefore).add(toBN(value)).sub(feeBN))
|
|
|
|
|
|
logs[0].event.should.be.equal('Withdraw')
|
|
logs[0].args.nullifierHash.should.be.eq.BN(toBN(input.nullifierHash.toString()))
|
|
logs[0].args.relayer.should.be.eq.BN(operator)
|
|
logs[0].args.fee.should.be.eq.BN(feeBN)
|
|
isSpent = await mixer.isSpent(input.nullifierHash.toString(16).padStart(66, '0x00000'))
|
|
isSpent.should.be.equal(true)
|
|
})
|
|
it.skip('should work with REAL DAI', async () => {
|
|
// dont forget to specify your token in .env
|
|
// and send `tokenDenomination` to accounts[0] (0x90F8bf6A479f320ead074411a4B0e7944Ea8c9C1)
|
|
// run ganache as
|
|
// npx ganache-cli --fork https://kovan.infura.io/v3/27a9649f826b4e31a83e07ae09a87448@13146218 -d --keepAliveTimeout 20
|
|
const deposit = generateDeposit()
|
|
const user = accounts[4]
|
|
const userBal = await token.balanceOf(user)
|
|
console.log('userBal', userBal.toString())
|
|
const senderBal = await token.balanceOf(sender)
|
|
console.log('senderBal', senderBal.toString())
|
|
await tree.insert(deposit.commitment)
|
|
await token.transfer(user, tokenDenomination, { from: sender })
|
|
console.log('transfer done')
|
|
|
|
const balanceUserBefore = await token.balanceOf(user)
|
|
console.log('balanceUserBefore', balanceUserBefore.toString())
|
|
await token.approve(mixer.address, tokenDenomination, { from: user })
|
|
console.log('approve done')
|
|
await mixer.deposit(toBN(deposit.commitment.toString()), { value, from: user, gasPrice: '0' })
|
|
console.log('deposit done')
|
|
|
|
const balanceUserAfter = await token.balanceOf(user)
|
|
balanceUserAfter.should.be.eq.BN(toBN(balanceUserBefore).sub(toBN(tokenDenomination)))
|
|
|
|
const { root, path_elements, path_index } = await tree.path(0)
|
|
|
|
// Circuit input
|
|
const input = stringifyBigInts({
|
|
// public
|
|
root,
|
|
nullifierHash: pedersenHash(deposit.nullifier.leInt2Buff(31)),
|
|
relayer: operator,
|
|
receiver,
|
|
fee,
|
|
|
|
// private
|
|
nullifier: deposit.nullifier,
|
|
secret: deposit.secret,
|
|
pathElements: path_elements,
|
|
pathIndex: path_index,
|
|
})
|
|
|
|
|
|
const proof = await websnarkUtils.genWitnessAndProve(groth16, input, circuit, proving_key)
|
|
const { pi_a, pi_b, pi_c, publicSignals } = websnarkUtils.toSolidityInput(proof)
|
|
|
|
const balanceMixerBefore = await token.balanceOf(mixer.address)
|
|
const balanceRelayerBefore = await token.balanceOf(relayer)
|
|
const ethBalanceOperatorBefore = await web3.eth.getBalance(operator)
|
|
const balanceRecieverBefore = await token.balanceOf(toHex(receiver.toString()))
|
|
const ethBalanceRecieverBefore = await web3.eth.getBalance(toHex(receiver.toString()))
|
|
let isSpent = await mixer.isSpent(input.nullifierHash.toString(16).padStart(66, '0x00000'))
|
|
isSpent.should.be.equal(false)
|
|
|
|
// Uncomment to measure gas usage
|
|
// gas = await mixer.withdraw.estimateGas(pi_a, pi_b, pi_c, publicSignals, { from: relayer, gasPrice: '0' })
|
|
// console.log('withdraw gas:', gas)
|
|
const { logs } = await mixer.withdraw(pi_a, pi_b, pi_c, publicSignals, { from: relayer, gasPrice: '0' })
|
|
console.log('withdraw done')
|
|
|
|
const balanceMixerAfter = await token.balanceOf(mixer.address)
|
|
const balanceRelayerAfter = await token.balanceOf(relayer)
|
|
const ethBalanceOperatorAfter = await web3.eth.getBalance(operator)
|
|
const balanceRecieverAfter = await token.balanceOf(toHex(receiver.toString()))
|
|
const ethBalanceRecieverAfter = await web3.eth.getBalance(toHex(receiver.toString()))
|
|
const feeBN = toBN(fee.toString())
|
|
balanceMixerAfter.should.be.eq.BN(toBN(balanceMixerBefore).sub(toBN(tokenDenomination)))
|
|
balanceRelayerAfter.should.be.eq.BN(toBN(balanceRelayerBefore))
|
|
ethBalanceOperatorAfter.should.be.eq.BN(toBN(ethBalanceOperatorBefore).add(feeBN))
|
|
balanceRecieverAfter.should.be.eq.BN(toBN(balanceRecieverBefore).add(toBN(tokenDenomination)))
|
|
ethBalanceRecieverAfter.should.be.eq.BN(toBN(ethBalanceRecieverBefore).add(toBN(value)).sub(feeBN))
|
|
|
|
|
|
logs[0].event.should.be.equal('Withdraw')
|
|
logs[0].args.nullifierHash.should.be.eq.BN(toBN(input.nullifierHash.toString()))
|
|
logs[0].args.relayer.should.be.eq.BN(operator)
|
|
logs[0].args.fee.should.be.eq.BN(feeBN)
|
|
isSpent = await mixer.isSpent(input.nullifierHash.toString(16).padStart(66, '0x00000'))
|
|
isSpent.should.be.equal(true)
|
|
})
|
|
})
|
|
|
|
afterEach(async () => {
|
|
await revertSnapshot(snapshotId.result)
|
|
// eslint-disable-next-line require-atomic-updates
|
|
snapshotId = await takeSnapshot()
|
|
tree = new MerkleTree(
|
|
levels,
|
|
zeroValue,
|
|
null,
|
|
prefix,
|
|
)
|
|
})
|
|
})
|