Sign EVM Messages

import { authenticatedEvmClient } from './client';

const evmClient = await authenticatedEvmClient();

// Load the metadata + shares you persisted at creation time.
const walletMetadata = JSON.parse(await redis.get(`wallet:${accountAddress}`));
const externalServerKeyShares = await vault.read(`wallet:${accountAddress}/shares`);

const signature = await evmClient.signMessage({
  message: 'Hello, World!',
  walletMetadata,
  externalServerKeyShares,
  password: 'your-password', // required if wallet was created with backUpToDynamic: true
});

console.log('Message signed:', signature);

// ✅ Simple signing - SDK recovers shares from backup via password
const signature = await evmClient.signMessage({
  message: 'Hello, World!',
  walletMetadata,
  password: 'your-password',
});

// Retrieve your stored key shares from your secrets vault.
const externalServerKeyShares = await vault.read(`wallet:${accountAddress}/shares`);

const signature = await evmClient.signMessage({
  message: 'Hello, World!',
  walletMetadata,
  externalServerKeyShares, // required for manual-backup wallets
});

const nonce = Date.now().toString();
const message = `Sign this message to authenticate: ${nonce}`;
const signature = await evmClient.signMessage({
  message,
  walletMetadata,
  externalServerKeyShares,
  password: 'your-password',
});

const data = { userId: 123, action: 'transfer', amount: '100' };
const message = JSON.stringify(data);
const signature = await evmClient.signMessage({
  message,
  walletMetadata,
  externalServerKeyShares,
  password: 'your-password',
});