我如何连接code非托管＆LT; SecKey＆GT;为Base64发送到另一台服务器？ [英] How do I encode an unmanaged<SecKey> to base64 to send to another server?

问题描述

我试图使用密钥对加密到我的应用程序，我的PHP服务器之间的验证身份。要做到这一点，我需要在发送公钥到服务器之后我生成它在我的应用程序。

I'm trying to use key pair encryption to validate identity between my app and my PHP server. To do this I need to send the public key over to the server after I generate it in my app.

if let pubKey = NSData(base64EncodedData: publicKey, options: NSDataBase64DecodingOptions.allZeros)! {
    println(pubKey)
}

公钥的类型为未管理＆LT; SecKey方式＆gt;

我得到在上面code中的错误是：额外的参数'base64En codedData呼叫

The error I'm getting in the above code is: Extra argument 'base64EncodedData' in call

我会怎么做呢？有没有更好的办法？

How would I do this? Is there a better way?

编辑：这是如何生成密钥对：

This is how the keypair is generated:

var publicKeyPtr, privateKeyPtr: Unmanaged<SecKey>?
let parameters = [
    String(kSecAttrKeyType): kSecAttrKeyTypeRSA,
    String(kSecAttrKeySizeInBits): 2048
]
let result = SecKeyGeneratePair(parameters, &publicKeyPtr, &privateKeyPtr)
let publicKey = publicKeyPtr!.takeRetainedValue()
let privateKey = privateKeyPtr!.takeRetainedValue()
let blockSize = SecKeyGetBlockSize(publicKey)

编辑2：所以，问题是，SecKey不是NSData的，所以在这里我的问题应该是：我如何转换公钥：SecKey到NSData的

Edit 2: So the issue is that SecKey is not NSData, so my question here should be: How do I convert a publicKey:SecKey to NSData?

推荐答案

看来你可以临时存储的关键，钥匙圈，然后拿回来，并将其转换为数据：

It seems that you can temporary store the key to keychain and then get it back and convert it to data:

func convertSecKeyToBase64(inputKey: SecKey) ->String? {
    // First Temp add to keychain
    let tempTag = "de.a-bundle-id.temp"
    let addParameters :[String:AnyObject] = [
        String(kSecClass): kSecClassKey,
        String(kSecAttrApplicationTag): tempTag,
        String(kSecAttrKeyType): kSecAttrKeyTypeRSA,
        String(kSecValueRef): inputKey,
        String(kSecReturnData):kCFBooleanTrue
    ]

    var keyPtr: Unmanaged<AnyObject>?
    let result = SecItemAdd(addParameters, &keyPtr)
    switch result {
    case noErr:
        let data = keyPtr!.takeRetainedValue() as! NSData

        // Remove from Keychain again:
        SecItemDelete(addParameters)
        let encodingParameter = NSDataBase64EncodingOptions(rawValue: 0)
        return data.base64EncodedStringWithOptions(encodingParameter)

    case errSecDuplicateItem:
        println("Duplicate Item")
        SecItemDelete(addParameters)
        return nil

    case errSecItemNotFound:
        println("Not found!")
        return nil

    default:
        println("Error: \(result)")
        return nil
    }
}

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