# SecCertificateCopyLongDescription(_:_:_:) Returns a copy of the long description of a certificate. ``` func SecCertificateCopyLongDescription(_ alloc: CFAllocator?, _ certificate: SecCertificate, _ error: UnsafeMutablePointer?>?) -> CFString? ``` ## Parameters `alloc` The allocator that should be used. Pass `NULL` or to use the default allocator. `certificate` The certificate from which the long description should be copied. `error` A pointer to a variable where an error object is stored upon failure. If not `NULL`, the caller is responsible for checking this variable and releasing the resulting object if it exists. ## Return Value A string object containing the long description, or `NULL` if an error occurred. In Objective-C, free this object with a call to the function when you are done with it. ## Discussion The format of this string is not guaranteed to be consistent across different operating systems or versions. Do not attempt to parse it programmatically. --- 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)