TypeError: Cannot read property 'toHexString' of undefined when validating smart contract wallet signature

[djnicholson]

This code:

  const provider = new ethers.providers.JsonRpcProvider(web3HostUrl);
  const message = new SiweMessage({
        domain,
        address,
        statement,
        uri,
        version: "1",
        chainId,
        expirationTime,
        issuedAt,
        nonce,
      });
  await message.validate(signature, provider);

Throws this exception:

TypeError: Cannot read property 'toHexString' of undefined
    at isHexable (/sample/node_modules/@ethersproject/bytes/src.ts/index.ts:55:21)
    at arrayify (/sample/node_modules/@ethersproject/bytes/src.ts/index.ts:112:9)
    at BytesCoder.DynamicBytesCoder.encode (/sample/node_modules/@ethersproject/abi/src.ts/coders/bytes.ts:17:25)
    at /sample/node_modules/@ethersproject/abi/src.ts/coders/array.ts:62:19
    at Array.forEach (<anonymous>)
    at pack (/sample/node_modules/@ethersproject/abi/src.ts/coders/array.ts:54:12)
    at TupleCoder.encode (/sample/node_modules/@ethersproject/abi/src.ts/coders/tuple.ts:54:20)
    at AbiCoder.encode (/sample/node_modules/@ethersproject/abi/src.ts/abi-coder.ts:112:15)
    at Interface._encodeParams (/sample/node_modules/@ethersproject/abi/src.ts/interface.ts:325:31)
    at Interface.encodeFunctionData (/sample/node_modules/@ethersproject/abi/src.ts/interface.ts:380:18)

Whenever signature was produced by an address other than address (i.e. a smart contract wallet)

Package versions:

"siwe": "^1.1.2",
"ethers": "^5.6.1",

[awoie]

Just to make sure we are addressing the correct issue here, can you please provide an example of your SIWE message. Our implementation will assume that address is the contract account that validates the signature. Does that work for you?

[djnicholson]

That should work fine for me, can you let me know when there is an npm release with the fix?

Here is an example SIWE message:

localhost wants you to sign in with your Ethereum account:
0xC36946c342ff98C3196e74C7bEf060b645B7fDB6

Connect? By connecting you agree to our Terms & Conditions and Privacy Policy.

URI: https://localhost
Version: 1
Chain ID: 1
Nonce: 4KMFuhU32gASNmV1d
Issued At: 2022-03-29T18:50:38.407Z
Expiration Time: 2022-03-30T01:50:38.407Z

[w4ll3]

Hello, #63 addressed this error and is already on main, a release will be made soon.

[djnicholson]

I tested with version 1.1.6 and the issue is resolved. Thank you.

[w4ll3]

Great!