From 88ff5450939b83bf6432a018564300f1dbae6660 Mon Sep 17 00:00:00 2001
From: merkleplant <pascal@merkleplant.xyz>
Date: Wed, 26 Feb 2025 08:51:38 +0100
Subject: [PATCH] fix: Fail on ecrecover failure

---
 src/Verifier.sol | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Verifier.sol b/src/Verifier.sol
index 8f02849..f414bc4 100644
--- a/src/Verifier.sol
+++ b/src/Verifier.sol
@@ -77,7 +77,7 @@ contract Verifier is Ownable {
         // v is 27 or 28 based on the y-value being even or odd
         // verify the signature
         address recoveredSigner = ecrecover(digest, v, r, s);
-        if (recoveredSigner != signer) {
+        if (recoveredSigner == address(0) || recoveredSigner != signer) {
             revert InvalidSignature();
         }