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custom relayer
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poma
parent
50872ac342
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9009b9c56d
@ -31,6 +31,7 @@ template Withdraw(levels, rounds) {
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signal input root;
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signal input nullifierHash;
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signal input receiver; // not taking part in any computations
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signal input relayer; // not taking part in any computations
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signal input fee; // not taking part in any computations
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signal private input nullifier;
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signal private input secret;
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@ -56,8 +57,10 @@ template Withdraw(levels, rounds) {
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// Squares are used to prevent optimizer from removing those constraints
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signal receiverSquare;
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signal feeSquare;
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signal relayerSquare;
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receiverSquare <== receiver * receiver;
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feeSquare <== fee * fee;
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relayerSquare <== relayer * relayer;
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}
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component main = Withdraw(16, 220);
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1
cli.js
1
cli.js
@ -75,6 +75,7 @@ async function withdraw(note, receiver) {
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root: root,
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nullifierHash,
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receiver: bigInt(receiver),
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relayer: bigInt(0),
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fee: bigInt(0),
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// private
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@ -36,12 +36,12 @@ contract ERC20Mixer is Mixer {
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safeErc20TransferFrom(msg.sender, address(this), mixDenomination);
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}
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function _processWithdraw(address payable _receiver, uint256 _fee) internal {
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function _processWithdraw(address payable _receiver, address payable _relayer, uint256 _fee) internal {
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_receiver.transfer(userEther);
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safeErc20Transfer(_receiver, mixDenomination - _fee);
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if (_fee > 0) {
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safeErc20Transfer(operator, _fee);
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safeErc20Transfer(_relayer, _fee);
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}
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}
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@ -23,10 +23,10 @@ contract ETHMixer is Mixer {
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) Mixer(_verifier, _mixDenomination, _merkleTreeHeight, _emptyElement, _operator) public {
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}
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function _processWithdraw(address payable _receiver, uint256 _fee) internal {
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function _processWithdraw(address payable _receiver, address payable _relayer, uint256 _fee) internal {
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_receiver.transfer(mixDenomination - _fee);
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if (_fee > 0) {
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operator.transfer(_fee);
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_relayer.transfer(_fee);
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}
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}
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@ -14,7 +14,7 @@ pragma solidity ^0.5.8;
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import "./MerkleTreeWithHistory.sol";
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contract IVerifier {
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function verifyProof(uint256[2] memory a, uint256[2][2] memory b, uint256[2] memory c, uint256[4] memory input) public returns(bool);
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function verifyProof(uint256[2] memory a, uint256[2][2] memory b, uint256[2] memory c, uint256[5] memory input) public returns(bool);
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}
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contract Mixer is MerkleTreeWithHistory {
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@ -29,7 +29,7 @@ contract Mixer is MerkleTreeWithHistory {
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uint256 public mixDenomination;
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event Deposit(uint256 indexed commitment, uint256 leafIndex, uint256 timestamp);
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event Withdraw(address to, uint256 nullifierHash, uint256 fee);
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event Withdraw(address to, uint256 nullifierHash, address relayer, uint256 fee);
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/**
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@dev The constructor
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@ -75,19 +75,20 @@ contract Mixer is MerkleTreeWithHistory {
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- the receiver of funds
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- optional fee that goes to the transaction sender (usually a relay)
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*/
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function withdraw(uint256[2] memory a, uint256[2][2] memory b, uint256[2] memory c, uint256[4] memory input) public {
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function withdraw(uint256[2] memory a, uint256[2][2] memory b, uint256[2] memory c, uint256[5] memory input) public {
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uint256 root = input[0];
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uint256 nullifierHash = input[1];
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address payable receiver = address(input[2]);
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uint256 fee = input[3];
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address payable relayer = address(input[3]);
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uint256 fee = input[4];
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require(fee < mixDenomination, "Fee exceeds transfer value");
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require(!nullifierHashes[nullifierHash], "The note has been already spent");
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require(isKnownRoot(root), "Cannot find your merkle root"); // Make sure to use a recent one
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require(verifier.verifyProof(a, b, c, input), "Invalid withdraw proof");
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nullifierHashes[nullifierHash] = true;
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_processWithdraw(receiver, fee);
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emit Withdraw(receiver, nullifierHash, fee);
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_processWithdraw(receiver, relayer, fee);
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emit Withdraw(receiver, nullifierHash, relayer, fee);
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}
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function toggleDeposits() external {
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@ -105,6 +106,6 @@ contract Mixer is MerkleTreeWithHistory {
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}
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function _processDeposit() internal {}
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function _processWithdraw(address payable _receiver, uint256 _fee) internal {}
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function _processWithdraw(address payable _receiver, address payable _relayer, uint256 _fee) internal {}
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}
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@ -127,6 +127,7 @@ contract('ERC20Mixer', accounts => {
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// public
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root,
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nullifierHash: pedersenHash(deposit.nullifier.leInt2Buff(31)),
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relayer: operator,
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receiver,
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fee,
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@ -167,6 +168,7 @@ contract('ERC20Mixer', accounts => {
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logs[0].event.should.be.equal('Withdraw')
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logs[0].args.nullifierHash.should.be.eq.BN(toBN(input.nullifierHash.toString()))
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logs[0].args.relayer.should.be.eq.BN(operator)
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logs[0].args.fee.should.be.eq.BN(feeBN)
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isSpent = await mixer.isSpent(input.nullifierHash.toString(16).padStart(66, '0x00000'))
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isSpent.should.be.equal(true)
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@ -207,6 +209,7 @@ contract('ERC20Mixer', accounts => {
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// public
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root,
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nullifierHash: pedersenHash(deposit.nullifier.leInt2Buff(31)),
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relayer: operator,
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receiver,
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fee,
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@ -249,6 +252,7 @@ contract('ERC20Mixer', accounts => {
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logs[0].event.should.be.equal('Withdraw')
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logs[0].args.nullifierHash.should.be.eq.BN(toBN(input.nullifierHash.toString()))
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logs[0].args.relayer.should.be.eq.BN(operator)
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logs[0].args.fee.should.be.eq.BN(feeBN)
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isSpent = await mixer.isSpent(input.nullifierHash.toString(16).padStart(66, '0x00000'))
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isSpent.should.be.equal(true)
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@ -285,6 +289,7 @@ contract('ERC20Mixer', accounts => {
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// public
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root,
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nullifierHash: pedersenHash(deposit.nullifier.leInt2Buff(31)),
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relayer: operator,
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receiver,
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fee,
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@ -328,6 +333,7 @@ contract('ERC20Mixer', accounts => {
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logs[0].event.should.be.equal('Withdraw')
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logs[0].args.nullifierHash.should.be.eq.BN(toBN(input.nullifierHash.toString()))
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logs[0].args.relayer.should.be.eq.BN(operator)
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logs[0].args.fee.should.be.eq.BN(feeBN)
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isSpent = await mixer.isSpent(input.nullifierHash.toString(16).padStart(66, '0x00000'))
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isSpent.should.be.equal(true)
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@ -141,6 +141,7 @@ contract('ETHMixer', accounts => {
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root,
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nullifierHash: pedersenHash(deposit.nullifier.leInt2Buff(31)),
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nullifier: deposit.nullifier,
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relayer: operator,
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receiver,
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fee,
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secret: deposit.secret,
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@ -196,6 +197,7 @@ contract('ETHMixer', accounts => {
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// public
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root,
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nullifierHash: pedersenHash(deposit.nullifier.leInt2Buff(31)),
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relayer: operator,
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receiver,
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fee,
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@ -235,6 +237,7 @@ contract('ETHMixer', accounts => {
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logs[0].event.should.be.equal('Withdraw')
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logs[0].args.nullifierHash.should.be.eq.BN(toBN(input.nullifierHash.toString()))
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logs[0].args.relayer.should.be.eq.BN(operator)
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logs[0].args.fee.should.be.eq.BN(feeBN)
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isSpent = await mixer.isSpent(input.nullifierHash.toString(16).padStart(66, '0x00000'))
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isSpent.should.be.equal(true)
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@ -251,6 +254,7 @@ contract('ETHMixer', accounts => {
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root,
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nullifierHash: pedersenHash(deposit.nullifier.leInt2Buff(31)),
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nullifier: deposit.nullifier,
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relayer: operator,
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receiver,
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fee,
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secret: deposit.secret,
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@ -275,6 +279,7 @@ contract('ETHMixer', accounts => {
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root,
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nullifierHash: pedersenHash(deposit.nullifier.leInt2Buff(31)),
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nullifier: deposit.nullifier,
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relayer: operator,
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receiver,
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fee,
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secret: deposit.secret,
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@ -299,6 +304,7 @@ contract('ETHMixer', accounts => {
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root,
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nullifierHash: pedersenHash(deposit.nullifier.leInt2Buff(31)),
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nullifier: deposit.nullifier,
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relayer: operator,
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receiver,
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fee: oneEtherFee,
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secret: deposit.secret,
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@ -323,6 +329,7 @@ contract('ETHMixer', accounts => {
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nullifierHash: pedersenHash(deposit.nullifier.leInt2Buff(31)),
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root,
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nullifier: deposit.nullifier,
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relayer: operator,
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receiver,
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fee,
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secret: deposit.secret,
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@ -350,6 +357,7 @@ contract('ETHMixer', accounts => {
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root,
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nullifierHash: pedersenHash(deposit.nullifier.leInt2Buff(31)),
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nullifier: deposit.nullifier,
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relayer: operator,
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receiver,
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fee,
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secret: deposit.secret,
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