# init(integrityCheckedRepresentation:) Initializes a private key from an integrity-checked data representation. ``` init(integrityCheckedRepresentation: D) throws where D : DataProtocol ``` ## Parameters `integrityCheckedRepresentation` The integrity-checked data representation of the private key. The parameter needs to be 64 bytes long, and contain the seed and a hash of the public key. --- 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)