golang 实现solidity keccak256(abi.encode(xxx))签名

golang 代码 需要找到对应solidity方法的abi。

package main

import (
    "fmt"
    "github.com/ethereum/go-ethereum/accounts/abi"
    "github.com/ethereum/go-ethereum/common"
    "github.com/ethereum/go-ethereum/crypto"
    "math/big"
    "strings"
)

func main() {
    abiString := `
[
    {
        "inputs": [
            {
                "internalType": "address",
                "name": "to",
                "type": "address"
            },
            {
                "internalType": "uint256",
                "name": "value",
                "type": "uint256"
            },
            {
                "internalType": "string",
                "name": "data",
                "type": "string"
            }
        ],
        "name": "gg",
        "outputs": [],
        "stateMutability": "pure",
        "type": "function"
    }
]`
    contractAbi, _ := abi.JSON(strings.NewReader(abiString))

    val1, _ := new(big.Int).SetString("100", 10)

    bytes, _ := contractAbi.Pack("gg",
        common.HexToAddress("0x5B38Da6a701c568545dCfcB03FcB875f56beddC4"),
        val1,
        "aaaa",
    )

    bytes = bytes[4:]
    hash := crypto.Keccak256Hash(bytes)
    fmt.Println(hash)
}

solidity 代码

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

contract Test {
    function gg(
        address to,
        uint256 value,
        string calldata data
    ) external pure returns (bytes32) {
        bytes32 hash = keccak256(abi.encodePacked(to, value, data));
        return hash;
    }
}