metamask eth_sign can't make it work

Question

I have this:

ethereum.request({ 
        method: 'eth_sign', 
        params: 
            {
                from: account, //this is the address
                message: '0xfafa'
            }
}).then(data => {
    console.log("data ", data);
})

Seems like the error states: RPC Error: Invalid parameters: must provide an Ethereum address.

What's the right syntax to make it work ?

Answer 1

First of all you have to enable account:

    var accounts = await ethereum.request({ method: 'eth_requestAccounts' })

after that, you can use Metamask enabled accounts

Answer 2

web3 is no longer available from MetaMask and you have to use the ethereum object to call personal_sign:

const message = "Hello from Ethereum Stack Exchange!";
const accounts = await ethereum.request({ method: 'eth_requestAccounts' });
const account = accounts[0];
const signature = await ethereum.request({ method: 'personal_sign', params: [ message, account ] });

Note, that you have to connect to MetaMask first by calling eth_requestAccounts. We use the first best available account to sign the message.

Also, don't use eth_sign, use personal_sign.

Answer 3

Maybe try using web3.eth.personal.sign(message, account)

-> Returns a promise reference post

Usually this requires a third parameter password but here someone says without providing a pass it uses MetaMask to sign.