# Function: openValue()

```ts
function openValue(
   key, 
   label, 
   bound, 
   sealed
): Promise<unknown>;
```

Defined in: [packages/core/src/identity/envelope.ts:98](https://github.com/leifriksheim/minca/blob/main/core/src/identity/envelope.ts#L98)

Opens what `sealValue` sealed; null when it doesn't open, or isn't JSON

## Parameters

| Parameter | Type |
| ------ | ------ |
| `key` | `CryptoKey` |
| `label` | `string` |
| `bound` | [`Bound`](https://minca.dev/api/core/type-aliases/Bound.md) |
| `sealed` | `unknown` |

## Returns

`Promise`\<`unknown`\>