diff --git a/src/main/resources/contract/solidity/Crypto.sol b/src/main/resources/contract/solidity/Crypto.sol
index 5434e781..8e11f6db 100644
--- a/src/main/resources/contract/solidity/Crypto.sol
+++ b/src/main/resources/contract/solidity/Crypto.sol
@@ -4,6 +4,6 @@ abstract contract Crypto
 {
     function sm3(bytes memory data) public view returns(bytes32){}
     function keccak256Hash(bytes memory data) public view returns(bytes32){}
-    function sm2Verify(bytes memory message, bytes memory sign) public view returns(bool, address){}
+    function sm2Verify(bytes32 message, bytes memory publicKey, bytes32 r, bytes32 s) public view returns(bool, address){}
     function curve25519VRFVerify(bytes memory message, bytes memory publicKey, bytes memory proof) public view returns(bool, uint256){}
 }