SecKeychainEvent.lockEvent
Indicates a keychain was locked.
Declaration
case lockEventDiscussion
It is impossible to distinguish between a lock event caused by an explicit request and one caused by a keychain that locked itself because of a timeout. Therefore, the pid parameter in the SecKeychainCallbackInfo structure does not contain useful information for this event. Note that when the login session terminates, all keychains become effectively locked; however, no kSecLockEvent events are generated in this case.