试图使用Apple的KeychainItemWrapper“翻译”到斯威夫特 [英] Trying to use KeychainItemWrapper by Apple "translated" to Swift
问题描述
叹息,整个下午我一直在努力......这是我的噩梦:
Sigh, I have been working on this the whole afternoon... here is my nightmare:
我正在尝试使用Apple制造的KeychainItemWrapper。但我将其Objective-C代码翻译为Swift:
I am trying to use the KeychainItemWrapper made by Apple. But I "translated" its Objective-C codes to Swift:
import Foundation
import Security
class MyKeychainItemWrapper: NSObject {
var keychainItemData: NSMutableDictionary?
var genericPasswordQuery: NSMutableDictionary = NSMutableDictionary()
init(identifier: String, accessGroup: String?) {
super.init()
// Begin Keychain search setup. The genericPasswordQuery leverages the special user
// defined attribute kSecAttrGeneric to distinguish itself between other generic Keychain
// items which may be included by the same application.
genericPasswordQuery.setObject(kSecClassGenericPassword, forKey: kSecClass)
genericPasswordQuery.setObject(identifier, forKey: kSecAttrGeneric)
// The keychain access group attribute determines if this item can be shared
// amongst multiple apps whose code signing entitlements contain the same keychain access group.
println(accessGroup)
if (!(accessGroup == nil)) {
genericPasswordQuery.setObject(accessGroup!, forKey: kSecAttrAccessGroup)
}
// Use the proper search constants, return only the attributes of the first match.
genericPasswordQuery.setObject(kSecMatchLimitOne, forKey: kSecMatchLimit)
genericPasswordQuery.setObject(kCFBooleanTrue, forKey: kSecReturnAttributes)
var tempQuery: NSDictionary = NSDictionary(dictionary: genericPasswordQuery)
var outDictionary: Unmanaged<AnyObject>? = nil
var status: OSStatus = SecItemCopyMatching(tempQuery as CFDictionaryRef, &outDictionary)
println(status == noErr)
if (status == noErr) {
// Stick these default values into keychain item if nothing found.
resetKeychainItem()
// Add the generic attribute and the keychain access group.
keychainItemData!.setObject(identifier, forKey: kSecAttrGeneric)
if (!(accessGroup == nil)) {
keychainItemData!.setObject(accessGroup!, forKey: kSecAttrAccessGroup)
}
} else {
// load the saved data from Keychain.
keychainItemData = secItemFormatToDictionary(outDictionary?.takeRetainedValue() as NSDictionary)
}
}
然后在我的应用程序的AppDelegate.swift中,我试图使用它:
Then in my app's AppDelegate.swift, I am trying to use it by:
import UIKit
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
var passwordItem: MyKeychainItemWrapper = MyKeychainItemWrapper(identifier: "Password", accessGroup: nil)
...
所以,初始化程序被调用,但是但不知何故,我总是,总是得到
So, the initializer is called, but but but somehow, I ALWAYS, ALWAYS get
线程1:EXC_BREAKPOINT (code = EXC_ARM_BREAKPOINT,subcode = 0xe7ffdefe)
Thread 1: EXC_BREAKPOINT (code=EXC_ARM_BREAKPOINT, subcode=0xe7ffdefe)
我已经尝试评论问题行,然后我在另一个if()得到此错误:
I have tried commenting out the problem lines and then I get this error at another if():
我甚至试过:
var mmm: Bool = (accessGroup == nil)
if (!mmm) {
genericPasswordQuery.setObject(accessGroup!, forKey: kSecAttrAccessGroup)
}
但同样的错误相同地方,即如果(..)
But same error at the same place, i.e. if(..)
我现在很困惑。我在这里错过了什么吗?
I am now so confused. Did I miss something here or?
环境:Xail6-beta6,iOS 8 beta 5在非越狱的iPhone 5上。
Environment: Xcode6-beta6, iOS 8 beta 5 on a non-jailbroken iPhone 5.
推荐答案
Swift 3
import UIKit
import Security
let kSecClassGenericPasswordValue = String(format: kSecClassGenericPassword as String)
let kSecClassValue = String(format: kSecClass as String)
let kSecAttrServiceValue = String(format: kSecAttrService as String)
let kSecValueDataValue = String(format: kSecValueData as String)
let kSecMatchLimitValue = String(format: kSecMatchLimit as String)
let kSecReturnDataValue = String(format: kSecReturnData as String)
let kSecMatchLimitOneValue = String(format: kSecMatchLimitOne as String)
let kSecAttrAccountValue = String(format: kSecAttrAccount as String)
struct KeychainAccess {
func setPasscode(identifier: String, passcode: String) {
if let dataFromString = passcode.data(using: String.Encoding.utf8) {
let keychainQuery = [
kSecClassValue: kSecClassGenericPasswordValue,
kSecAttrServiceValue: identifier,
kSecValueDataValue: dataFromString
] as CFDictionary
SecItemDelete(keychainQuery)
print(SecItemAdd(keychainQuery, nil))
}
}
func getPasscode(identifier: String) -> String? {
let keychainQuery = [
kSecClassValue: kSecClassGenericPasswordValue,
kSecAttrServiceValue: identifier,
kSecReturnDataValue: kCFBooleanTrue,
kSecMatchLimitValue: kSecMatchLimitOneValue
] as CFDictionary
var dataTypeRef: AnyObject?
let status: OSStatus = SecItemCopyMatching(keychainQuery, &dataTypeRef)
var passcode: String?
if (status == errSecSuccess) {
if let retrievedData = dataTypeRef as? Data,
let result = String(data: retrievedData, encoding: String.Encoding.utf8) {
passcode = result as String
}
}
else {
print("Nothing was retrieved from the keychain. Status code \(status)")
}
return passcode
}
}
Swift 2
import UIKit;
import Security;
let kSecClassGenericPasswordValue = NSString(format: kSecClassGenericPassword);
let kSecClassValue = NSString(format: kSecClass);
let kSecAttrServiceValue = NSString(format: kSecAttrService);
let kSecValueDataValue = NSString(format: kSecValueData);
let kSecMatchLimitValue = NSString(format: kSecMatchLimit);
let kSecReturnDataValue = NSString(format: kSecReturnData);
let kSecMatchLimitOneValue = NSString(format: kSecMatchLimitOne);
let kSecAttrAccountValue = NSString(format: kSecAttrAccount);
class KeychainAccess: NSObject {
func setPasscode(identifier: String, passcode: String) {
let dataFromString: NSData = passcode.dataUsingEncoding(NSUTF8StringEncoding)!;
let keychainQuery = NSDictionary(
objects: [kSecClassGenericPasswordValue, identifier, dataFromString],
forKeys: [kSecClassValue, kSecAttrServiceValue, kSecValueDataValue]);
SecItemDelete(keychainQuery as CFDictionaryRef);
let status: OSStatus = SecItemAdd(keychainQuery as CFDictionaryRef, nil);
}
func getPasscode(identifier: String) -> NSString? {
let keychainQuery = NSDictionary(
objects: [kSecClassGenericPasswordValue, identifier, kCFBooleanTrue, kSecMatchLimitOneValue],
forKeys: [kSecClassValue, kSecAttrServiceValue, kSecReturnDataValue, kSecMatchLimitValue]);
var dataTypeRef: AnyObject?
let status: OSStatus = SecItemCopyMatching(keychainQuery, &dataTypeRef)
var passcode: NSString?;
if (status == errSecSuccess) {
let retrievedData: NSData? = dataTypeRef as? NSData
if let result = NSString(data: retrievedData!, encoding: NSUTF8StringEncoding) {
passcode = result as String
}
}
else {
print("Nothing was retrieved from the keychain. Status code \(status)")
}
return passcode;
}
}
然后从任何地方只需致电:
Then from anywhere simply call:
func setPasscode(passcode: String) {
let keychainAccess = KeychainAccess();
keychainAccess.setPasscode("YourAppIdentifier", passcode:passcode);
}
func getPasscode() -> NSString {
let keychainAccess = KeychainAccess();
return keychainAccess.getPasscode("YourAppIdentifier")!;
}
func deletePasscode() {
let keychainAccess = KeychainAccess();
keychainAccess.setPasscode("YourAppIdentifier", passcode:"");
}
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