Signature Mismatch Issue with bytes

[bolom]

I am facing an issue with signing typed data in both Ruby and JavaScript. The signatures generated from the two languages do not match. Below, I have provided my Ruby and JavaScript code along with the respective signatures for your reference:

Ruby Code:

data = {
  types: {
    EIP712Domain: [
      { name: 'name', type: 'string' },
      { name: 'version', type: 'string' },
      { name: 'chainId', type: 'uint256' },
      { name: 'verifyingContract', type: 'address' },
    ],
    Data: [
       { name: 'data', type: 'bytes' },
     ],
  },
  primaryType: 'Data',
  domain: {
    name: 'Complex Data',
    version: '1',
    chainId: 421613, 
    verifyingContract: '0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC',
  },
  message: {
    data: "0xa2d6eae3",
  }
}
# Sign the typed data
signature = key.sign_typed_data(data)
# ...

JavaScript Code:

const domain = {
    name: 'Complex Data',
    version: '1',
    chainId: 421613,  // Make sure the chainId matches your Ethereum network
    verifyingContract: '0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC'
};

const types = {
  Data: [
        { name: 'data', type: 'bytes' },
    ]
};

const value = {
  data: "0xa2d6eae3",
};

async function signTypedData() {
    const wallet = new ethers.Wallet(PRIVATE_KEY);
    const signature = await wallet.signTypedData(domain, types, value);
    console.log('Signature:', signature);
}

signTypedData();
// ...

when data is type bytes, the signature doesn't match but when its a string it's working

[bolom]

@q9f Could you tell me what I did wrong?

[q9f]

Thanks for reporting. This is a confirmed bug.

[bolom]

@q9f How I can help to fix the bug?

[q9f]

Yes, I have patched it in #252

[bolom]

@q9f btw I would love to be a contributor, do you have any issue with the label "good to first issue" in the pipeline?

[q9f]

Contributions are very welcome! I don't have any good first issues, though. I'm still looking for someone to take on #102 or #103 - these are the biggest pain points but also need some work.

[bolom]

between both with one is more important. I would love to try

[q9f]

#102 is more important.

[bolom]

I'll give it a go and read through it. If I have any questions, I'll ask in the thread