# Function: deriveLocalKey()

```ts
function deriveLocalKey(seed): Promise<CryptoKey>;
```

Defined in: [packages/core/src/identity/account-vault.ts:151](https://github.com/leifriksheim/minca/blob/main/core/src/identity/account-vault.ts#L151)

The local key: seals this account's data on this device, never leaves it,
and isn't extractable. Its own label, so the account key derives nothing that opens it.

## Parameters

| Parameter | Type |
| ------ | ------ |
| `seed` | `Uint8Array` |

## Returns

`Promise`\<`CryptoKey`\>