# decapsulate(_:) Decapsulates the encapsulated shared secret ``` func decapsulate(_ encapsulated: D) throws -> SymmetricKey where D : DataProtocol ``` ## Parameters `encapsulated` The encapsulated shared secret ## Return Value The decapsulated shared secret --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)