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# encapsulate()

Generates and encapsulates a shared secret.

```
func encapsulate() throws -> KEM.EncapsulationResult
```

## Return Value

The shared secret, and its encapsulated version.

## Discussion

Share the encapsulated secret with the person who has the [`KEMPrivateKey`](/documentation/CryptoKit/KEMPrivateKey).
They use [`decapsulate(_:)`](/documentation/CryptoKit/KEMPrivateKey/decapsulate(_:)) to recover the shared secret.

---

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