An abstract Core Foundation-type object representing an X.509 certificate.
- iOS 2.0+
- macOS 10.2+
- tvOS 9.0+
- watchOS 2.0+
Sec object for a certificate that is stored in a keychain can be safely cast to a
Sec for manipulation as a keychain item. On the other hand, if the
Sec is not stored in a keychain, casting the object to a
Sec and passing it to Keychain Services functions returns errors.