> ## Documentation Index
> Fetch the complete documentation index at: https://docs.rhinestone.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Message signing

You can sign messages with your smart account. This can be helpful for [Permit2](https://github.com/Uniswap/permit2), [SIWE](https://eips.ethereum.org/EIPS/eip-4361), or signing the offchain orders.

Signing works for both deployed and undeployed smart accounts (via [ERC-6492](https://eips.ethereum.org/EIPS/eip-6492)).

## Ethereum Signed Message (EIP-191)

To sign a message:

```ts theme={null}
const signature = await rhinestoneAccount.signMessage(
  'Hello, world!',
  chain,
)
```

You can also sign hex values directly:

```ts theme={null}
const signature = await rhinestoneAccount.signMessage(
  {
    raw: '0x1234',
  },
  chain,
)
```

## Typed Data (EIP-712)

```ts theme={null}
const signature = await rhinestoneAccount.signTypedData(
  {
    domain: {
      name: 'Ether Mail',
      version: '1',
      chainId: 1,
      verifyingContract: '0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC',
    },
    types: {
      Person: [
        { name: 'name', type: 'string' },
        { name: 'wallet', type: 'address' },
      ],
      Mail: [
        { name: 'from', type: 'Person' },
        { name: 'to', type: 'Person' },
        { name: 'contents', type: 'string' },
      ],
    },
    primaryType: 'Mail',
    message: {
      from: {
        name: 'Cow',
        wallet: '0xCD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826',
      },
      to: {
        name: 'Bob',
        wallet: '0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB',
      },
      contents: 'Hello, Bob!',
    },
  },
  chain,
)
```

## Configuration

### Chain

Signatures are chain-specific (they will vary based on whether the account is deployed or not).

### Custom signers

You can also choose which signers to sign the message with. This is helpful when you have multiple validators, use a multisig, or session keys.