是否有可能在iOS中保存多個公鑰到鑰匙串，swift

Question

我試圖生成RSA鑰匙並將其保存到鑰匙串中。我生成兩個公鑰和一個私鑰。

public key one -> generated using SecKeyGeneratePair & 
private key one -> generated using SecKeyGeneratePair 

public key two -> generated using SecKeyCreateWithData 

所有三個按鍵kSecAttrIsPermanent屬性設置爲true。

然後我檢索鍵下面的方法

func GetKeysfromKeyChain(tag: String) -> SecKey? { 



     let query : [String: Any] = [ 
      String(kSecClass) : kSecClassKey, 
      String(kSecAttrKeyType): kSecAttrKeyTypeRSA, 
      String(kSecAttrApplicationTag): tag, 
      String(kSecReturnRef): true 
     ] 


     var result: AnyObject? 
     let status = SecItemCopyMatching(query as CFDictionary, &result) 


     if status == errSecSuccess { 
      print("key existed :") 
      return result as! SecKey? 
     } 

     return nil 
    } 

用上面的方法，可以順利拿到public key one和privat key one。但對於public key two它總是返回一個零值。不知道，請你幫忙。

我這是怎麼產生的公共密鑰的兩個

let data2 = Data.init(base64Encoded: serverPublicKey) 


     let keyDict:[NSObject:NSObject] = [ 
      kSecAttrIsPermanent: true as NSObject, 
      kSecAttrApplicationTag: "com.marlonbrand.serverpublic".data(using: String.Encoding.utf8)! as NSObject, 
      kSecAttrKeyType: kSecAttrKeyTypeRSA, 
      kSecAttrKeySizeInBits: 2048 as NSObject, 
      kSecAttrKeyClass: kSecAttrKeyClassPublic 
     ] 


     let publickeysi = SecKeyCreateWithData(data2! as CFData, keyDict as CFDictionary, nil) 

Answer 1

您是否嘗試過設置你的keyDict到[String : Any]的類型，做相應的蒙上你需要他們？如果我不得不猜測，對NSObject的強制轉換可能會搞砸了。