为ECDSA.recover签名元组(struct)

Question

我正在使用web3js，并且我试图正确地签署一个元组。

下面您可以看到用于验证的可靠代码。我用的是draft-EIP712Upgradeable.sol

struct NFTVoucher {
    uint256 tokenId;
    uint256 minPrice; // in wei
    string uri;       // IPFS uri of metadata file
    bytes signature;  // the EIP-712 signature of all other fields in the NFTVoucher struct.
}

function _verify(NFTVoucher calldata voucher) public view returns (address) {
    bytes32 digest = _hash(voucher);
    return ECDSAUpgradeable.recover(digest, voucher.signature);
}

function _hash(NFTVoucher calldata voucher) internal view returns (bytes32) {
     return _hashTypedDataV4(keccak256(abi.encode(
         keccak256("NFTVoucher(uint256 tokenId,uint256 minPrice,string uri)"),
         voucher.tokenId,
         voucher.minPrice,
         keccak256(bytes(voucher.uri))
     )));
}

前端构建在ReactJs, web3js上。下面的代码

let newHash = web3.utils.soliditySha3(
  web3.eth.abi.encodeParameters(
    [
      'uint256',
      'uint256',
      'string'
    ], 
    [
      tokenId,
      priceNumber,
      imageURL
    ]
  )
)

let sig = await web3.eth.sign(newHash, account); // "account" is the address of signer

那么，我应该如何更改前端代码以通过验证呢？如果您需要其他信息，请告诉我。欢迎任何帮助。谢谢你✌

Answer 1

下面是解决方案，伙计们：

let msgHash = web3.utils.soliditySha3(
    { type: "uint256", value: tokenId },
    { type: "uint256", value: priceNumber },
    { type: "string", value: imageURL }
)

let sig = await web3.eth.sign(msgHash, account);

:)