Add require for ecrecover

jameshoo7 · Jan 9, 2022 · 2e790cb · 2e790cb
1 parent 7e5f315
commit 2e790cb
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/contracts/contracts/AdditionalZkSync.sol b/contracts/contracts/AdditionalZkSync.sol
@@ -166,6 +166,7 @@ contract AdditionalZkSync is Storage, Config, Events, ReentrancyGuard {
 
         for (uint256 i = 0; i < signatures.length; ++i) {
             address recoveredAddress = Utils.recoverAddressFromEthSignature(signatures[i], messageHash);
+            require(recoveredAddress != address(0x00), "p4"); // invalid signature
             approveCutUpgradeNoticePeriod(recoveredAddress);
         }
     }