signMessage

signMessage supports signing messages from the FireblocksSigner.

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

Usage

example.ts

import { createFireblocksSigner } from "./fireblocks";

const fireblocksSigner = await createFireblocksSigner();

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

fireblocks.ts

import { FireblocksSigner } from "@alchemy/aa-signers/fireblocks";
import { ChainId } from "@fireblocks/fireblocks-web3-provider";

export const createFireblocksSigner = async () => {
  const fireblocksSigner = new FireblocksSigner({
    privateKey: process.env.FIREBLOCKS_API_PRIVATE_KEY_PATH!,
    apiKey: process.env.FIREBLOCKS_API_KEY!,
    vaultAccountIds: process.env.FIREBLOCKS_VAULT_ACCOUNT_IDS,
    chainId: ChainId.SEPOLIA,
  });

  await fireblocksSigner.authenticate();

  return fireblocksSigner;
};

Returns

Promise<Hex>

A Promise containing the signature of the message.

Parameters

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