ethereum - 使用solidity ecrecover验证TRON地址
问题描述
我正在尝试使用在 TRON 网络上运行的智能合约来验证签名消息。我尝试了几种不同的方法,但都失败了:
根据这篇文章,我部署了以下智能合约:
contract Verifier {
function recoverAddr(bytes32 msgHash, uint8 v, bytes32 r, bytes32 s) returns (address) {
return ecrecover(msgHash, v, r, s);
}
function isSigned(address _addr, bytes32 msgHash, uint8 v, bytes32 r, bytes32 s) returns (bool) {
return ecrecover(msgHash, v, r, s) == _addr;
}
}
以及以下客户端(js)代码:
let contract = await tronWeb.contract().at(contract_address);
let msg = tronWeb.sha3('This is my message');
let signature = await tronWeb.trx.sign(msg);
var r = signature.substr(0, 66);
var s = "0x" + signature.substr(66, 64);
var v = "0x" + signature.substr(signature.length - 2);
let hexAddress = await contract.recoverAddr(msg, v, r, s).call();
但是返回了错误的地址。
根据这篇文章,我部署了以下智能合约:
contract Verifier {
//return the address according to the signature and and the data
function validate(bytes32 hash, bytes signature)
public
pure
returns (address){
bytes memory signedString = signature;
bytes32 r = convertToBytes32(slice(signedString, 0, 32));
bytes32 s = convertToBytes32(slice(signedString, 32, 32));
byte v1 = slice(signedString, 64, 1)[0];
uint8 v = uint8(v1) + 27;
return ecrecover(hash, uint8(r), s, bytes32(v));
}
//slice function
function slice(bytes memory data, uint start, uint len)
private
pure
returns (bytes){
bytes memory b = new bytes(len);
for(uint i = 0; i < len; i++){
b[i] = data[i + start];
}
return b;
}
//convert bytes to bytes32
function convertToBytes32(bytes memory source)
private
pure
returns (bytes32 result) {
assembly {
result := mload(add(source, 32))
}
}
}
以及以下客户端(js)代码:
let contract = await tronWeb.contract().at(contract_address);
let msg = tronWeb.sha3('Hello World');
let signature = await tronWeb.trx.sign(msg);
let hexAddress = await contract.validate(msg, signature).call();
还是返回了错误的地址。
我设法使用基于此的纯 js 代码签名和恢复地址:
const ethers = tronWeb.utils.ethersUtils;
let signingKey = new ethers.SigningKey(tronWeb.defaultPrivateKey);
let message = "This is some message";
let messageBytes = ethers.toUtf8Bytes(message);
let messageDigest = ethers.keccak256(messageBytes);
let signature = signingKey.signDigest(messageDigest);
let recovered = ethers.recoverAddress(messageDigest, signature);
console.log("Recovered address: " + recovered);
如何使用 js 代码签署消息并使用智能合约恢复?我错过了什么?
解决方案
我得到了它。
智能合约代码:
contract Verifier {
function recoverAddr(bytes32 msgHash, uint8 v, bytes32 r, bytes32 s) returns (address) {
return ecrecover(msgHash, v, r, s);
}
function isSigned(address _addr, bytes32 msgHash, uint8 v, bytes32 r, bytes32 s) returns (bool) {
return ecrecover(msgHash, v, r, s) == _addr;
}
}
客户端代码:
const ethers = tronWeb.utils.ethersUtils;
let contract = await tronWeb.contract().at(contract_address);
let signingKey = new ethers.SigningKey(tronWeb.defaultPrivateKey);
let message = "This is some message";
let messageBytes = ethers.toUtf8Bytes(message);
let messageDigest = ethers.keccak256(messageBytes);
let signature = signingKey.signDigest(messageDigest);
let hexAddress = await contract.recoverAddr(messageDigest, signature.v, signature.r, signature.s).call();
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