# scopeKey

> **scopeKey**(`kk`, `scope`): [`Uint8Array`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array)

Defined in: [derive.ts:231](https://github.com/FilOzone/synapse-sdk/blob/68e30a2a5457180e60a5579eb5ecff90b65894b3/packages/keysmith/src/derive.ts#L231)

The key for an access scope. Scopes form a tree, and a scope's key is derived
from its parent's, so holding a scope also opens every scope beneath it.

## Parameters

| Parameter | Type |
| ------ | ------ |
| `kk` | [`Uint8Array`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array) |
| `scope` | `string` |

## Returns

[`Uint8Array`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array)