dexorder

2024-10-17 02:42:28 -04:00
commit 25def69c66
878 changed files with 112489 additions and 0 deletions
--- a/lib_openzeppelin_contracts/contracts/mocks/EIP712Verifier.sol
+++ b/lib_openzeppelin_contracts/contracts/mocks/EIP712Verifier.sol
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: MIT
+
+pragma solidity ^0.8.20;
+
+import {ECDSA} from "../utils/cryptography/ECDSA.sol";
+import {EIP712} from "../utils/cryptography/EIP712.sol";
+
+abstract contract EIP712Verifier is EIP712 {
+    function verify(bytes memory signature, address signer, address mailTo, string memory mailContents) external view {
+        bytes32 digest = _hashTypedDataV4(
+            keccak256(abi.encode(keccak256("Mail(address to,string contents)"), mailTo, keccak256(bytes(mailContents))))
+        );
+        address recoveredSigner = ECDSA.recover(digest, signature);
+        require(recoveredSigner == signer);
+    }
+}