# GSSCredentialCopyUUID(_:) Returns a copy of the universally unique identifier corresponding to a GSS credential. ``` func GSSCredentialCopyUUID(_ credential: gss_cred_id_t) -> Unmanaged? ``` ## Parameters `credential` The credential whose unique identifier you want. ## Return Value A `CFUUID` object that corresponds to the given credential. Use `CFRelease` to free this object’s memory when you are done with it. ## Discussion When you want to restore the credential from the `CFUUID`, use [`GSSCreateCredentialFromUUID(_:)`](/documentation/GSS/GSSCreateCredentialFromUUID(_:)). --- 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)