mirror of
https://github.com/tornadocash/tornado-core.git
synced 2024-11-01 15:55:18 +01:00
67 lines
1.9 KiB
JavaScript
67 lines
1.9 KiB
JavaScript
const fs = require('fs');
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const assert = require('assert');
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const circom = require("circom");
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const snarkjs = require("snarkjs");
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const circomlib = require('circomlib');
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const bigInt = snarkjs.bigInt;
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const stringifyBigInts = require("websnark/tools/stringifybigint").stringifyBigInts;
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const unstringifyBigInts = require("websnark/tools/stringifybigint").unstringifyBigInts;
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const utils = require("./utils");
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const merkleTree = require('../lib/MerkleTree');
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const jsStorage = require("../lib/Storage");
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const mimcHasher = require("../lib/MiMC");
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function generateDeposit() {
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let deposit = {
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secret: utils.rbigint(31),
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nullifier: utils.rbigint(31),
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};
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const preimage = Buffer.concat([deposit.nullifier.leInt2Buff(32), deposit.secret.leInt2Buff(32)]);
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deposit.commitment = utils.pedersenHash(preimage);
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return deposit;
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}
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(async () => {
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const dep1 = generateDeposit();
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const dep2 = generateDeposit();
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const dep3 = generateDeposit();
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const tree = new merkleTree("", new jsStorage(), new mimcHasher(), 16, 0);
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await tree.insert(dep1.commitment);
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await tree.insert(dep2.commitment);
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await tree.insert(dep3.commitment);
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const {root, path_elements, path_index} = await tree.path(1);
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// Circuit input
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const input = {
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// public
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root: root,
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nullifier: dep2.nullifier,
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receiver: utils.rbigint(20),
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fee: bigInt(1e17),
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// private
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secret: dep2.secret,
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pathElements: path_elements,
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pathIndex: path_index,
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};
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console.log("Input:\n", input);
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console.time("Time");
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const proof = await utils.snarkProof(input);
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console.log("Proof:\n", proof);
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console.timeEnd("Time");
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const verify = await utils.snarkVerify(proof);
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assert(verify);
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// try to cheat with recipient
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proof.publicSignals[2] = '0x000000000000000000000000000000000000000000000000000000000000beef';
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const verifyScam = await utils.snarkVerify(proof);
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assert(!verifyScam);
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console.log("Done.");
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})();
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