vandadnp/iOS-8-Swift-Programming-Cookbook

Reading values from Keychain does not work when in Release mode

moshegutman opened this issue · 2 comments

moshegutman commented

I'm unable to read values from the Keychain when using the Swift compiler Optimization Level [Fastest -O], which is default for Release mode apps.

https://github.com/vandadnp/iOS-8-Swift-Programming-Cookbook/blob/master/chapter-security/Finding%20Values%20in%20the%20Keychain/Finding%20Values%20in%20the%20Keychain/AppDelegate.swift

Seems like these lines are the problem:

var returnedData: Unmanaged<AnyObject>? = nil
let results = Int(SecItemCopyMatching(query, &returnedData))

Possible solution:
http://stackoverflow.com/questions/24145838/querying-ios-keychain-using-swift

var returnedData: AnyObject?
var results = withUnsafeMutablePointer(&returnedData) { SecItemCopyMatching(query, UnsafeMutablePointer($0)) }
vandadnp commented

Hi there, what is the value in the results variable after you call the SecItemCopyMatching() function? Thanks.

moshegutman commented

It is an OSStatus object. Upon success its value will be equal to errSecSuccess