致命錯誤：'試試！'表達式意外地引發了一個錯誤：CryptoSwift.AES.Error.BlockSizeExceeded：

錯誤：致命錯誤：'嘗試！'表達意外加一個錯誤：CryptoSwift.AES.Error.BlockSizeExceeded：致命錯誤：'試試！'表達式意外地引發了一個錯誤：CryptoSwift.AES.Error.BlockSizeExceeded：

我用這個AES https://github.com/krzyzanowskim/CryptoSwift和我的代碼這樣的：

倍率FUNC viewDidLoad中（）{ super.viewDidLoad（）

let jsonString = "{ \"device\": \"iphone\", \"req\": \"connect\", \"deviceId\": \"device ID\" }"; 

let url = UrlManager() 
url.setRequestData(jsonString) 
url.sendRequest({ (response) -> Void in 
    print("Response data: \(response)") 
    let bytes: [UInt8] = Converter.hexstringConvertToBytes(response) 
    print("Bytes: \(bytes)") 
    let dencryptedBytes: [UInt8] = try! bytes.decrypt(AES(key: UrlManager.CONNECTION_KEY, iv: UrlManager.CONNECTION_IV)) 
    print("Decoded Bytes: \(dencryptedBytes)") 
    let jsonData: String = Converter.bytesConvertToString(dencryptedBytes) 
    print("Received json: \(jsonData)") 
})

UrlManager的

方法：

內部FUNC sendRequest將（ResponseHandler所：（響應：字符串） - >空隙）{

SocketManager.sharedInstance.sendMessage(self.requestData, handler: responseHandler)

}

SocketManager方法：

內部FUNC的sendMessage（消息：字符串，處理程序：（響應：字符串） - >空隙）{

let qualityOfServiceClass = QOS_CLASS_BACKGROUND 
let backgroundQueue = dispatch_get_global_queue(qualityOfServiceClass, 0) 
dispatch_async(backgroundQueue, { 
    // set response data to UrlManager 
    let response = self.sendRequest(message, client: self.socket) 
    handler(response: response!) 

    dispatch_async(dispatch_get_main_queue(), {() -> Void in 
     //print("This is run on the main queue") 
    }) 

})

}

但這是工作（當我測試此代碼）：

let hexaString =「 0B8F665884EE009C64A64862E26D33C42F490D6EF227709B1900D42B71FB2169802A27FACDCF2D5587A468E2AE0C14FD7FFC2D0D291A0021814A2D5EA4DC1225BE64B04C8CCA831CB1C97277040F5E36"

var numbers = [UInt8]() 
var from = hexaString.startIndex 
while from != hexaString.endIndex { 
    let to = from.advancedBy(2, limit: hexaString.endIndex) 
    numbers.append(UInt8(hexaString[from ..< to], radix: 16) ?? 0) 
    from = to 
} 
print(numbers) // [215, 193, 122, 79] 

let dencryptedBytes: [UInt8] = try! numbers.decrypt(AES(key: "be8d5ba39cde4e41", iv: "a5e5ff5dcd2a655c")) 
print(dencryptedBytes) 

if let str = NSString(bytes: dencryptedBytes, length: dencryptedBytes.count, encoding: NSUTF8StringEncoding) as? String { 
    print(str) 
} else { 
    print("not a valid UTF-8 sequence") 
}

爲什麼呢？ PLZ，告訴我。謝謝！

來源

2015-11-06 Clever

struct Error: ErrorType { 

} 

func f() throws -> Void { 
    throw Error() 
} 

/* 
try! f() // expression unexpectedly raised an error: Error() 
*/ 

let a = try? f() 
a == nil // true 
do { 
    try f() 
} catch { 
    print("ERROR") 
} 
// print "ERROR"

你的情況

CryptoSwift.AES.Error.BlockSizeExceeded和結果是零

來源

2015-11-06 10:21:39 user3441734

致命錯誤：'試試！'表達式意外地引發了一個錯誤：CryptoSwift.AES.Error.BlockSizeExceeded：

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