BASE64加密(Swift)

使用原生簡易加密BASE64

Swift 3

import UIKit

class ViewController: UIViewController {

    

    var base64String:String!

    var Lable1:UILabel!

    var Lable2:UILabel!

    

    @IBOutlet weak var string: UITextField!

    

    override func viewDidLoad() {

        

        super.viewDidLoad()

        // Do any additional setup after loading the view, typically from a nib.

        string.backgroundColor = UIColor.brown

        string.alpha = 0.7;

        

        Lable1 = UILabel.init(frame: CGRect(x: 10, y: 150, width: 320, height: 36));

        Lable1.backgroundColor = UIColor.gray

        Lable1.alpha = 0.5

        

        Lable2 = UILabel.init(frame: CGRect(x: 10, y: 190, width: 320, height: 36));

        Lable2.backgroundColor = UIColor.red

        Lable2.alpha = 0.5;

        

    }

    

    override func didReceiveMemoryWarning() {

        super.didReceiveMemoryWarning()

        // Dispose of any resources that can be recreated.

    }

    

    @IBAction func encryptionBtn(_ sender: UIButton) {

        let StringText = string.text;

        let base64Data = StringText!.data(using: String.Encoding.utf8)

        

        base64String = base64Data?.base64EncodedString(options: .lineLength64Characters)

        

        print(base64String)

        

        Lable1.text = "這是加密結果：\(base64String)";

       

        self.view.addSubview(Lable1);

    }

    

    @IBAction func UnencryptionBtn(_ sender: UIButton) {

        if(base64String != nil){

            let decodedData = Data(base64Encoded: base64String!, options: .ignoreUnknownCharacters)

            

            let decodedString = NSString(data: decodedData!, encoding: String.Encoding.utf8.rawValue) as! String

            

            print(decodedString)

            

            Lable2.text = "這是解密結果：\(decodedString)";

            self.view.addSubview(Lable2);

        }

    }

    @IBAction func cleanBtn(_ sender: UIButton) {

        string.text = nil

        

        Lable1.text = ""

        Lable1.removeFromSuperview()

        

        Lable2.text = ""

        Lable2.removeFromSuperview()

    }

}

Swfit 2.3

override func viewDidLoad() {

        super.viewDidLoad()

let string = "test"

  //加密使用base64

           

let base64Data = string.dataUsingEncoding(NSUTF8StringEncoding)

            

let base64String = base64Data?.base64EncodedStringWithOptions(.Encoding64CharacterLineLength)

          

  print(base64String)  //輸出後會變成(dGVzdA==)

       

     //解密base64

      

      let decodedData = NSData(base64EncodedString: base64String!, options: .IgnoreUnknownCharacters)

           

let decodedString = NSString(data: decodedData!, encoding: NSUTF8StringEncoding)

          

  print(decodedString)//輸出後會恢復(test)

}