From 769505e96f7514a9ac77dffef280019584ec1402 Mon Sep 17 00:00:00 2001
From: s1fr0 <28568419+s1fr0@users.noreply.github.com>
Date: Thu, 13 Oct 2022 01:53:12 +0200
Subject: [PATCH] fix(rln): add mod on input pk

---
 contracts/Rln.sol | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/contracts/Rln.sol b/contracts/Rln.sol
index 4df5fcc..c17673e 100644
--- a/contracts/Rln.sol
+++ b/contracts/Rln.sol
@@ -3,6 +3,7 @@ pragma solidity 0.8.15;
 import { IPoseidonHasher } from "./PoseidonHasher.sol";
 
 contract RLN {
+	uint256 constant Q = 21888242871839275222246405745257275088548364400416034343698204186575808495617;
 	uint256 public immutable MEMBERSHIP_DEPOSIT;
 	uint256 public immutable DEPTH;
 	uint256 public immutable SET_SIZE;
@@ -42,7 +43,7 @@ contract RLN {
 	}
 
 	function _register(uint256 pubkey) internal {
-		members[pubkeyIndex] = pubkey;
+		members[pubkeyIndex] = mod(pubkey,Q);
 		emit MemberRegistered(pubkey, pubkeyIndex);
 		pubkeyIndex += 1;
 	}