# unwrap(_:using:) Unwraps a key using the AES wrap algorithm. ``` static func unwrap(_ wrappedKey: WrappedKey, using kek: SymmetricKey) throws -> SymmetricKey where WrappedKey : DataProtocol ``` ## Parameters `wrappedKey` The key to unwrap. `kek` The key encryption key. ## Return Value The unwrapped key. ## Discussion Wrap is an implementation of the AES key wrap algorithm as specified in IETF RFC 3394. The method throws an error is the key was incorrectly wrapped. --- 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)