Question

I have a large core data store that I dont care about encryption. I am worried about the overhead of the automatic encryption so I am trying to disable it.

The quote from the docs is:

For applications built for iOS 5.0 or later, persistent stores now store data by default in an encrypted format on disk.

This is the code I am using, its not crashing, but im not 100% sure is doing anything. (I got the constant names from here).

NSDictionary* optionsDictionary = [NSDictionary 
                                   dictionaryWithObject:NSFileProtectionNone 
                                   forKey:NSFileProtectionKey];

if (![__persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType 
                                   configuration:nil
                                   URL:storeURL
                                   options:optionsDictionary
                                   error:&error]) {

• Is this the right code?

• How can I tell if has stopped encryption?

Answer 1

According to the docs, that code should turn off all the file protection even on iOS5. You can’t easily test it, however.