signMessage

signMessage supports signing messages from the PortalSigner.

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

Usage

example.ts

import { createPortalSigner } from "./portal";

const portalSigner = await createPortalSigner();

const signedMessage = await portalSigner.signMessage("test");

portal.ts

import { sepolia } from "@alchemy/aa-core";
import { PortalSigner } from "@alchemy/aa-signers/portal";

export const createPortalSigner = async () => {
  const portalSigner = new PortalSigner({
    autoApprove: true,
    gatewayConfig: `${sepolia.rpcUrls.alchemy.http}/${process.env.ALCHEMY_API_KEY}`,
    chainId: sepolia.id,
  });

  await portalSigner.authenticate();

  return portalSigner;
};

Returns

Promise<Hex>

A Promise containing the signature of the message.

Parameters

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