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more tests for snark verification WIP

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Alexey 2019-07-15 20:21:58 +03:00
parent 44719acdf0
commit 666aba582c
4 changed files with 111 additions and 65 deletions
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61
scripts/test_snark.js
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@ -1,61 +0,0 @@
const assert = require('assert');
const snarkjs = require("snarkjs");
const bigInt = snarkjs.bigInt;
const utils = require("./utils");
const merkleTree = require('../lib/MerkleTree');
function generateDeposit() {
let deposit = {
secret: utils.rbigint(31),
nullifier: utils.rbigint(31),
};
const preimage = Buffer.concat([deposit.nullifier.leInt2Buff(32), deposit.secret.leInt2Buff(32)]);
deposit.commitment = utils.pedersenHash(preimage);
return deposit;
}
(async () => {
// === Create 3 deposits ===
const dep1 = generateDeposit();
const dep2 = generateDeposit();
const dep3 = generateDeposit();
const tree = new merkleTree(16);
await tree.insert(dep1.commitment);
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
const input = {
// public
root: root,
nullifier: dep2.nullifier,
receiver: utils.rbigint(20),
fee: bigInt(1e17),
// private
secret: dep2.secret,
pathElements: path_elements,
pathIndex: path_index,
};
console.log("Input:\n", input);
console.time("Time");
const proof = await utils.snarkProof(input);
console.log("Proof:\n", proof);
console.timeEnd("Time");
const verify = await utils.snarkVerify(proof);
assert(verify);
// try to cheat with recipient
proof.publicSignals[2] = '0x000000000000000000000000000000000000000000000000000000000000beef';
const verifyScam = await utils.snarkVerify(proof);
assert(!verifyScam);
console.log("Done.");
})();