Created
October 16, 2014 09:10
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Keychain troubleshooting
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import UIKit | |
import Security | |
let serviceIdentifier = "com.Test.KeychainTest" | |
let kSecClassValue = kSecClass as NSString | |
let kSecAttrAccountValue = kSecAttrAccount as NSString | |
let kSecValueDataValue = kSecValueData as NSString | |
let kSecClassGenericPasswordValue = kSecClassGenericPassword as NSString | |
let kSecAttrServiceValue = kSecAttrService as NSString | |
let kSecMatchLimitValue = kSecMatchLimit as NSString | |
let kSecReturnDataValue = kSecReturnData as NSString | |
let kSecMatchLimitOneValue = kSecMatchLimitOne as NSString | |
class KeychainManager { | |
class func setString(value: NSString, forKey: String) { | |
self.save(serviceIdentifier, key: forKey, data: value) | |
} | |
class func stringForKey(key: String) -> NSString? { | |
var token = self.load(serviceIdentifier, key: key) | |
return token | |
} | |
class func removeItemForKey(key: String) { | |
self.save(serviceIdentifier, key: key, data: "") | |
} | |
class func save(service: NSString, key: String, data: NSString) { | |
var dataFromString: NSData = data.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)! | |
// Instantiate a new default keychain query | |
var keychainQuery: NSMutableDictionary = NSMutableDictionary(objects: [kSecClassGenericPasswordValue, service, key, dataFromString], forKeys: [kSecClassValue, kSecAttrServiceValue, kSecAttrAccountValue, kSecValueDataValue]) | |
// Delete any existing items | |
SecItemDelete(keychainQuery as CFDictionaryRef) | |
if data == "" { return } | |
// Add the new keychain item | |
var status: OSStatus = SecItemAdd(keychainQuery as CFDictionaryRef, nil) | |
var alertView = UIAlertView(); | |
alertView.addButtonWithTitle("Ok"); | |
alertView.title = "Status"; | |
alertView.message = "Saving \(status)"; | |
alertView.show(); | |
} | |
class func load(service: NSString, key: String) -> NSString? { | |
// Instantiate a new default keychain query | |
// Tell the query to return a result | |
// Limit our results to one item | |
var keychainQuery: NSMutableDictionary = NSMutableDictionary(objects: [kSecClassGenericPasswordValue, service, key, kCFBooleanTrue, kSecMatchLimitOneValue], forKeys: [kSecClassValue, kSecAttrServiceValue, kSecAttrAccountValue, kSecReturnDataValue, kSecMatchLimitValue]) | |
var dataTypeRef :Unmanaged<AnyObject>? | |
// Search for the keychain items | |
let status: OSStatus = SecItemCopyMatching(keychainQuery, &dataTypeRef) | |
var alertView = UIAlertView(); | |
alertView.addButtonWithTitle("Ok"); | |
alertView.title = "Status"; | |
alertView.message = "Loading \(status)"; | |
alertView.show(); | |
let opaque = dataTypeRef?.toOpaque() | |
var contentsOfKeychain: NSString? | |
if let op = opaque? { | |
let retrievedData = Unmanaged<NSData>.fromOpaque(op).takeUnretainedValue() | |
// Convert the data retrieved from the keychain into a string | |
contentsOfKeychain = NSString(data: retrievedData, encoding: NSUTF8StringEncoding) | |
} else { | |
return nil | |
} | |
return contentsOfKeychain | |
} | |
} |
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