chore(phone-as-device): app-481 get private key from Keychain

Author: alessioemireni

ios/MqttClient.swift

@@ -61,18 +61,18 @@ class MqttClient : RCTEventEmitter {
             String(kSecAttrApplicationTag): keyTag as AnyObject,
             String(kSecReturnRef)         : true as AnyObject
         ]
-        
+
         if #available(iOS 10, *) {
             query[String(kSecAttrKeyType)] = kSecAttrKeyTypeECSECPrimeRandom
         } else {
             // Fallback on earlier versions
             query[String(kSecAttrKeyType)] = kSecAttrKeyTypeEC
         }
-        
+
         var result : AnyObject?
-        
+
         let status = SecItemCopyMatching(query as CFDictionary, &result)
-        
+
         if status == errSecSuccess {
             print("\(keyTag) Key existed!")
             block((result as! SecKey?)!)
@@ -99,7 +99,7 @@ class MqttClient : RCTEventEmitter {
             reject("RANGE_ERROR", "invalid certificate", nil)
             return
         }
-        
+
         let block: SecKeyPerformBlock = { privateKey in
             do {
                 // adds the private key to the keychain
@@ -162,7 +162,7 @@ class MqttClient : RCTEventEmitter {
             self.certArray = [identity!, caCert] as CFArray
             resolve(nil)
         }
-        
+
         self.loadPrivateKeyFromKeychain(keyTag: keyTag, reject: reject, block: block)
     }