# Function: openKnock()

```ts
function openKnock(
   keys, 
   blob, 
   provider
): Promise<OpenedKnock | null>;
```

Defined in: [packages/core/src/inbox/inbox.ts:251](https://github.com/leifriksheim/minca/blob/main/core/src/inbox/inbox.ts#L251)

Opens a knock and checks it through (spec 07 §6): sealed to one of these
keys and naming it; signed under a note from its account that may write for
the whole account, valid when it was signed; recent; and carrying a signed
invitation from the same account to a private space that account alone
founded.

## Parameters

| Parameter | Type | Description |
| ------ | ------ | ------ |
| `keys` | readonly `Uint8Array`\<`ArrayBufferLike`\>[] | The private scalars it may be sealed to: the inbox keys, or the contact key |
| `blob` | `string` | - |
| `provider` | [`CryptoProvider`](https://minca.dev/api/core/interfaces/CryptoProvider.md) | - |

## Returns

`Promise`\<[`OpenedKnock`](https://minca.dev/api/inbox/interfaces/OpenedKnock.md) \| `null`\>

The knock, or null when it is anything less