From d48a17f5d909cb2320ee09d1f82c91a7d1f4b360 Mon Sep 17 00:00:00 2001 From: poma Date: Sat, 13 Jul 2019 14:57:49 +0300 Subject: [PATCH] cli (wip) --- cli.js | 109 ++++++++ package-lock.json | 613 ++++++++++++++++++++++++++++++++++++++++++ package.json | 1 + scripts/test_snark.js | 9 +- 4 files changed, 725 insertions(+), 7 deletions(-) create mode 100755 cli.js diff --git a/cli.js b/cli.js new file mode 100755 index 0000000..6e0ce58 --- /dev/null +++ b/cli.js @@ -0,0 +1,109 @@ +#!/usr/bin/env node +const snarkjs = require("snarkjs"); +const bigInt = snarkjs.bigInt; +const utils = require("./scripts/utils"); +const merkleTree = require('./lib/MerkleTree'); +const contract = require("truffle-contract"); +const Mixer = contract(require('./build/contracts/Mixer.json')); + +const sender = "";//accounts[0]; +const amount = "1 ether"; + +async function deposit() { + let deposit = { + nullifier: utils.rbigint(31), + secret: utils.rbigint(31), + }; + const preimage = Buffer.concat([deposit.nullifier.leInt2Buff(32), deposit.secret.leInt2Buff(32)]); + deposit.commitment = utils.pedersenHash(preimage); + + console.log("Submitting deposit transaction"); + const mixer = await Mixer.deployed(); + await mixer.deposit(deposit.commitment, { value: amount, from: sender }); + + return preimage.toString('hex'); +} + +async function withdraw(note, receiver) { + let buf = Buffer.from(note.slice(2), "hex"); + let deposit = { + nullifier: bigInt.leBuff2int(buf.slice(0, 32)), + secret: bigInt.leBuff2int(buf.slice(32, 64)), + }; + + console.log("Getting current state from mixer contract"); + const mixer = await Mixer.deployed(); + + const {root, path_elements, path_index} = await tree.path(1); + // Circuit input + const input = { + // public + root: root, + nullifier: deposit.nullifier, + receiver: bigInt(receiver), + fee: bigInt(0), + + // private + secret: deposit.secret, + pathElements: path_elements, + pathIndex: path_index, + }; + + console.log("Generating SNARK proof"); + const { pi_a, pi_b, pi_c, publicSignals } = await utils.snarkProof(input); + + console.log("Submitting withdraw transaction"); + await mixer.withdraw(pi_a, pi_b, pi_c, publicSignals, { from: sender }) +} + +function printHelp() { + console.log(` +Usage: + Submit a deposit from default eth account and return the resulting note + $ ./cli.js deposit + + Withdraw a note to 'receiver' account + $ ./cli.js withdraw { + const dep = await deposit(); + console.log(`Your note: 0x${dep}`); + + const acc = "0xee6249BA80596A4890D1BD84dbf5E4322eA4E7f0";//accounts[1]; + await withdraw(dep, acc); +})(); + + +// const args = process.argv.slice(2); +// if (args.length === 0) { +// printHelp(); +// } +// +// switch (args[0]) { +// case 'deposit': +// if (args.length === 1) +// deposit().then(() => process.exit(0)); +// else +// printHelp(); +// break; +// +// case 'withdraw': +// if (args.length === 3 && /^[0-9a-fA-F]{128}$/.test(args[1]) && /^[0-9a-fA-F]{64}$/.test(args[2])) +// withdraw(args[1], args[2]).then(() => process.exit(0)); +// else +// printHelp(); +// break; +// +// default: +// printHelp(); +// } diff --git a/package-lock.json b/package-lock.json index a6cb3bb..1ac48c7 100644 --- a/package-lock.json +++ b/package-lock.json @@ -432,6 +432,11 @@ "resolved": "https://registry.npmjs.org/big-integer/-/big-integer-1.6.44.tgz", "integrity": "sha512-7MzElZPTyJ2fNvBkPxtFQ2fWIkVmuzw41+BZHSzpEq3ymB2MfeKp1+yXl/tS75xCx+WnyV+yb0kp+K1C3UNwmQ==" }, + "bignumber.js": { + "version": "7.2.1", + "resolved": "https://registry.npmjs.org/bignumber.js/-/bignumber.js-7.2.1.tgz", + "integrity": "sha512-S4XzBk5sMB+Rcb/LNcpzXr57VRTxgAvaAEDAl1AwRx27j00hT84O6OkteE7u8UB3NuaaygCRrEpqox4uDOrbdQ==" + }, "binary-extensions": { "version": "1.13.1", "resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-1.13.1.tgz", @@ -6418,6 +6423,309 @@ } } }, + "truffle-blockchain-utils": { + "version": "0.0.10", + "resolved": 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"git+https://github.com/iden3/snarkjs.git#5fe2bd4642ec567c75ad5ac3f73687999c412e73", "truffle": "^5.0.27", "truffle-artifactor": "^4.0.23", + "truffle-contract": "^4.0.24", "truffle-hdwallet-provider": "^1.0.14", "web3-utils": "^1.0.0-beta.55", "websnark": "0.0.4" diff --git a/scripts/test_snark.js b/scripts/test_snark.js index 5e0042b..bdd6ac8 100644 --- a/scripts/test_snark.js +++ b/scripts/test_snark.js @@ -1,15 +1,8 @@ -const fs = require('fs'); const assert = require('assert'); -const circom = require("circom"); const snarkjs = require("snarkjs"); -const circomlib = require('circomlib'); const bigInt = snarkjs.bigInt; -const stringifyBigInts = require("websnark/tools/stringifybigint").stringifyBigInts; -const unstringifyBigInts = require("websnark/tools/stringifybigint").unstringifyBigInts; const utils = require("./utils"); const merkleTree = require('../lib/MerkleTree'); -const jsStorage = require("../lib/Storage"); -const mimcHasher = require("../lib/MiMC"); function generateDeposit() { let deposit = { @@ -22,6 +15,7 @@ function generateDeposit() { } (async () => { + // === Create 3 deposits === const dep1 = generateDeposit(); const dep2 = generateDeposit(); const dep3 = generateDeposit(); @@ -32,6 +26,7 @@ function generateDeposit() { await tree.insert(dep2.commitment); await tree.insert(dep3.commitment); + // === Withdrawing deposit 2 === const {root, path_elements, path_index} = await tree.path(1); // Circuit input