ios - Swift CryptoSwift 库导致错误“致命错误：数组索引超出范围”

Question

我使用 CryptoSwift 进行 AES 加密/解密。当我运行此代码时，它会引发错误：

“致命错误：数组索引超出范围”。

从这里使用参考

这可能是什么原因？任何建议将不胜感激。

代码：

 let key = "1234567890123456" // key
   let iv = "1234567890123456" // random
   let message = "This is test string"

    override func viewDidLoad() {
        super.viewDidLoad()

    // encrypt
    let encrypted = AES(key: key, iv: iv, blockMode: .CBC)
    let enc =  encrypted?.encrypt(message.utf8Array, padding: PKCS7())
    println("enc >>  \(enc)")

    // decrypt
    let decrypted = AES(key: key, iv: iv, blockMode: .CBC)
    let dec =  encrypted?.decrypt(enc!, padding: PKCS7())
    println("dec >>  \(dec)")

Answer 1

问题可能在这里：message.utf8Array，您将字符串转换为数组。这是工作示例：

    let key = "1234567890123456" // key
    let iv = "1234567890123456" // random
    let message = "This is test string"

    let aes = AES(key: key, iv: iv, blockMode: .CBC)

    // encrypt
    let enc = try! aes?.encrypt(message.dataUsingEncoding(NSUTF8StringEncoding)!.arrayOfBytes(), padding: PKCS7())
    print("enc >>  \(enc)")

    // decrypt
    let dec =  try! aes?.decrypt(enc!, padding: PKCS7())
    let str = NSString(data: NSData.withBytes(dec!), encoding: NSUTF8StringEncoding)
    print("dec >>  \(str)")