Signing messages

You can request a user to sign a message with a private key of his connected account. This can be achieved in two ways.

You can call the signMessage on the fuel object providing the account address (in Bech32 format) you want to sign message with, and the message itself:

TypeScript

const signature = await fuel.signMessage('fuel1j0nym7r7twmy8cs6gx2yhd042n38znkeghyjw3dtp0g6tkju34zq2fwltf', 'Message to sign');
console.log("Sign message response", signature);

Or you can get an instance of the wallet first and then call the signMessage method on it:

TypeScript

const wallet = await fuel.getWallet('fuel1j0nym7r7twmy8cs6gx2yhd042n38znkeghyjw3dtp0g6tkju34zq2fwltf');
const signature = await wallet.signMessage('Message to sign');
console.log("Sign message response", signature);

After calling any of the methods, the app will prompt the user to authorize the request. The following screen will appear:

Once the user approves the request, the promise is finalized with a string - the signature. If anything goes wrong, e.g. the user cancels the request, the method call will result in an exception.