Allow return data length >= 32 in SignatureChecker (#4038)

Co-authored-by: Francisco Giordano <fg@frang.io>
OpenZeppelin · Feb 24, 2023 · b4d765b · b4d765b
1 parent d558153
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diff --git a/.changeset/warm-masks-obey.md b/.changeset/warm-masks-obey.md
@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': minor
+---
+
+`SignatureChecker`: Allow return data length greater than 32 from EIP-1271 signers.
diff --git a/contracts/utils/cryptography/SignatureChecker.sol b/contracts/utils/cryptography/SignatureChecker.sol
@@ -44,7 +44,7 @@ library SignatureChecker {
             abi.encodeWithSelector(IERC1271.isValidSignature.selector, hash, signature)
         );
         return (success &&
-            result.length == 32 &&
+            result.length >= 32 &&
             abi.decode(result, (bytes32)) == bytes32(IERC1271.isValidSignature.selector));
     }
 }