Correct way to remove(purge) all keychain data for an iOS app

Question

I stored some information in the keychain, and there is a case that I need to remove all of the items, instead of doing [keychain removeObjectForKey:theKey] for all the keys, can I do:

NSDictionary *spec = [NSDictionary dictionaryWithObjectsAndKeys:(id)kSecClassGenericPassword, kSecClass,
                      [self serviceName], kSecAttrService, nil];

return !SecItemDelete((CFDictionaryRef)spec);

instead?

I tried it and it worked, just not sure if I am doing the correct thing?

Answer 1

in my app I'm using this line to clear my keychain :

[[[KeychainItemWrapper alloc] initWithIdentifier:@"my_key" accessGroup:nil] resetKeychainItem]