# init(withAAEncodedData:) Creates a new archive header from encoded data. ``` required init?(withAAEncodedData data: UnsafeBufferPointer) ``` ## Parameters `data` The encoded data. --- 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)