signMessage

signMessage supports signing messages from the LitSigner.

This method must be called after authenticate. Otherwise, this method will throw an error with the message Not Authenticated.

Usage

example.ts

import { createLitSignerWithAuthMethod } from "./lit";


const litSigner = new createLitSignerWithAuthMethod();

const signedMessage = await litSigner.signMessage("Hello World!");

lit.ts

import { polygonMumbai } from "@alchemy/aa-core";
import { LitAuthMethod, LitSigner } from "@alchemy/aa-signers/lit-protocol";

const API_KEY = "<YOUR API KEY>";
const POLYGON_MUMBAI_RPC_URL = `${polygonMumbai.rpcUrls.alchemy.http[0]}/${API_KEY}`;
const PKP_PUBLIC_KEY = "<YOUR PKP PUBLIC KEY>";

export const createLitSignerWithAuthMethod = async () => {
  return new LitSigner<LitAuthMethod>({
    pkpPublicKey: PKP_PUBLIC_KEY,
    rpcUrl: POLYGON_MUMBAI_RPC_URL,
  });
};

Returns

Promise<Hex>

A Promise containing the signature of the message.

Parameters

msg: string | Uint8Array) -- the message to sign