From f7bca0848055ef1e3e7711e49f5e6429d6cd6c31 Mon Sep 17 00:00:00 2001
From: poma <Semenov.Roman@mail.ru>
Date: Thu, 18 Jul 2019 16:30:24 +0300
Subject: [PATCH] Check merkle root
---
index.js | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/index.js b/index.js
index 559d19f..23951ff 100644
--- a/index.js
+++ b/index.js
@@ -42,6 +42,11 @@ app.post('/relay', async (req, resp) => {
if (isSpent) {
throw new Error('The note has been spent')
}
+ const root = publicSignals[0]
+ const isKnownRoot = await mixer.methods.isKnownRoot(root).call()
+ if (!isKnownRoot) {
+ throw new Error('The merkle root is too old or invalid')
+ }
const gas = await mixer.methods.withdraw(pi_a, pi_b, pi_c, publicSignals).estimateGas()
const result = mixer.methods.withdraw(pi_a, pi_b, pi_c, publicSignals).send({
gas: numberToHex(gas + 50000),