added signature check in beforeRoyaltyClaim hook

Anotherblock · Jan 29, 2024 · 72fee02 · 72fee02
1 parent e411795
commit 72fee02
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/src/utils/ABKYCModule.sol b/src/utils/ABKYCModule.sol
@@ -137,7 +137,12 @@ contract ABKYCModule is IABKYCModule, AccessControlUpgradeable {
      * @param _user user address
      * @param _signature signature generated by AB Backend and signed by AB KYC Signer
      */
-    function beforeRoyaltyClaim(address _user, bytes calldata _signature) external view {}
+    function beforeRoyaltyClaim(address _user, bytes calldata _signature) external view {
+        bytes32 digest = keccak256(
+            abi.encodePacked("\x19Ethereum Signed Message:\n32", keccak256(abi.encodePacked(_user, currentNonce)))
+        );
+        if (digest.recover(_signature) != defaultSigner) revert ABErrors.NO_KYC();
+    }
 
     //     ____        __         ___       __          _
     //    / __ \____  / /_  __   /   | ____/ /___ ___  (_)___