# iOS SDK JWT key not working **URL:** \ **Category:** iOS\ **Created:** [February 11, 2020, 12:16pm UTC](https://devforum.zoom.us/t/ios-sdk-jwt-key-not-working/7996 "2020-02-11T12:16:05Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![osemenyshyn](https://avatars.discourse-cdn.com/v4/letter/o/f0a364/32.png) [@osemenyshyn](https://devforum.zoom.us/u/osemenyshyn)\ **Post date:** [February 11, 2020, 12:16pm UTC](https://devforum.zoom.us/t/ios-sdk-jwt-key-not-working/7996/1 "2020-02-11T12:16:05Z")
**Description** Steps: 1. On a base of CLIENT\_KEY and CLIENT\_SECRET generate in [jwt.io](http://jwt.io) token. 2. Put this token in auth service: _\> MobileRTC.shared().initialize(context)_ _\> authService?.clientKey = CLIENT\_KEY_ _\> authService?.clientSecret = CLIENT\_SECRET_ _\> authService?.delegate = self_ \*\> \* _\> authService?.jwtToken = JWT\_Token_ _\> authService?.sdkAuth()_ 3. MobileSDK not authorised sdk and method **onMobileRTCAuthReturn** not called. **Which version?** v4.4.57220.1211 **Screenshots** [JWT.io](http://JWT.io) format screenshot ![Screenshot 2020-02-11 at 14.07.17](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/2X/7/7bc2246086bb9e9c3010a172975009f80f9cc438.png) **Additional context** Pls may somebody help me how to use this JWT to auth my sdk? ---
**Author:** ![carson.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/carson.zoom/32/785_2.png) [@carson.zoom](https://devforum.zoom.us/u/carson.zoom)\ **Post date:** [February 13, 2020, 1:51am UTC](https://devforum.zoom.us/t/ios-sdk-jwt-key-not-working/7996/2 "2020-02-13T01:51:00Z")
Hi [osemenyshyn](https://devforum.zoom.us/u/osemenyshyn), Thanks for using Zoom SDK. Did you set the web domain before the code snippet you shared? May I inquire what is the web domain you are using? Please have a try with the following code snippet: ```auto let context = MobileRTCSDKInitContext(); context.domain = "zoom.us"; MobileRTC.shared().initialize(context); let authService = MobileRTC.shared().getAuthService(); authService?.delegate = self; authService?.clientKey = "Your key here"; authService?.clientSecret = "Your secret here"; autheService?.jwtToken = JWT_Token; authService?.sdkAuth(); ``` Hope this helps. Thanks! ---
**Author:** ![osemenyshyn](https://avatars.discourse-cdn.com/v4/letter/o/f0a364/32.png) [@osemenyshyn](https://devforum.zoom.us/u/osemenyshyn)\ **Post date:** [February 14, 2020, 9:10am UTC](https://devforum.zoom.us/t/ios-sdk-jwt-key-not-working/7996/3 "2020-02-14T09:10:13Z")
![Screenshot 2020-02-14 at 11.09.07](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/2X/c/c4e53e8923fa87ed9b2aca6f71efa9d5feef617d.png) ---
**Author:** ![osemenyshyn](https://avatars.discourse-cdn.com/v4/letter/o/f0a364/32.png) [@osemenyshyn](https://devforum.zoom.us/u/osemenyshyn)\ **Post date:** [February 14, 2020, 12:57pm UTC](https://devforum.zoom.us/t/ios-sdk-jwt-key-not-working/7996/4 "2020-02-14T12:57:00Z")
I tried different domains ([medicallyhome.zoom.us](http://medicallyhome.zoom.us) and [zoom.us](http://zoom.us)). I tried as use SDKs’ keys (clientKey and clientSecret) as Web key and secret. Nothing helped. For now I just do only the one step =\> generate it in jwt io and put it locally. Should JWT token be registered in Zoom by some extra Zoom API request? Or I might just configure it in my jwtToken parameter in the project? = ( ---
**Author:** ![carson.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/carson.zoom/32/785_2.png) [@carson.zoom](https://devforum.zoom.us/u/carson.zoom)\ **Post date:** [February 15, 2020, 12:55am UTC](https://devforum.zoom.us/t/ios-sdk-jwt-key-not-working/7996/5 "2020-02-15T00:55:38Z")
Hi [osemenyshyn](https://devforum.zoom.us/u/osemenyshyn), Thanks for the reply and the screenshots. Could you have a try with the following: 1. Comment out the jwtToken, and only use the clientKey & clientSecret, and make sure the key&secret are working. Please don’t forget to extend MobileRTCAuthDelegate in your class ```auto class AppDelegate: UIResponder, UIApplicationDelegate, MobileRTCAuthDelegate { ... } ``` 1. Once your key & secret is confirmed to be working, then following instructions in [https://marketplace.zoom.us/docs/sdk/native-sdks/iOS/mastering-zoom-sdk/sdk-initialization](https://marketplace.zoom.us/docs/sdk/native-sdks/iOS/mastering-zoom-sdk/sdk-initialization) to form the JWT token. If you are using JWT token, you do not need to use the field clientKey & clientSecret in authSerivce. Hope this helps. Thanks! ---
**Author:** ![osemenyshyn](https://avatars.discourse-cdn.com/v4/letter/o/f0a364/32.png) [@osemenyshyn](https://devforum.zoom.us/u/osemenyshyn)\ **Post date:** [February 26, 2020, 3:43pm UTC](https://devforum.zoom.us/t/ios-sdk-jwt-key-not-working/7996/6 "2020-02-26T15:43:48Z")
> [@carson.zoom](#): > > 1. Comment out the jwtToken, and only use the clientKey & clientSecret, and make sure the key&secret are working. Please don’t forget to extend MobileRTCAuthDelegate in your class > > ```auto > class AppDelegate: UIResponder, UIApplicationDelegate, MobileRTCAuthDelegate { > ... > } > > ``` This part works fine. JWT doesn’t ((( I’m sure I’m not correct generate JWT: > > > I use clientKey&clientSecret to generate JWT in JWT io 1. Set clientKey in “appKey” 2. Set Unix current timestamp (1582729214) to “iat” 3. Set Unix current timestamp + expiration timestamp (1582739214) to “exp” 4. Set expiration time (60) to “tokenExp” 5. Set clientSecret in “your-256-bit-secret” > > > After I take generated jwt and put in _authService?.jwtToken_ parameter. Is everything fine? Or I miss something? ---
**Author:** ![carson.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/carson.zoom/32/785_2.png) [@carson.zoom](https://devforum.zoom.us/u/carson.zoom)\ **Post date:** [February 27, 2020, 3:28am UTC](https://devforum.zoom.us/t/ios-sdk-jwt-key-not-working/7996/7 "2020-02-27T03:28:20Z")
Hi [osemenyshyn](https://devforum.zoom.us/t/ios-sdk-jwt-key-not-working/7996/6), Thanks for the reply. The exp should be the timestamp when the JWT token expires. And the unit for tokenExp is sec, and the minimum value should be issueTimestamp + 1800 (30 mins, no max), here is an example: ```auto { "appKey": "string", // Your SDK key "iat": 1582774049, "exp": 1582848000 "tokenExp": 1582776049 (1582774049 + 2000) } ``` Hope this helps. Thanks! ---
**Author:** ![DeveloperBot](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/developerbot/32/12632_2.png) [@DeveloperBot](https://devforum.zoom.us/u/DeveloperBot)\ **Post date:** [August 21, 2020, 7:26pm UTC](https://devforum.zoom.us/t/ios-sdk-jwt-key-not-working/7996/8 "2020-08-21T19:26:22Z")