NRF Cloud & Developer account

Question

Hi, 
 I would like some clarification regarding the use of a developper account. I generated a Service Evaluation Token, tested with some queries, everything works. 
 Now, i want to generate JWTs for each of my devices. I provisioned the device on the account ( like explained https://docs.nrfcloud.com/Devices/Security/JWT.html ), it's ok. 
 How then to retrieve JWT ? On jwt.io, i fill in the different fields (uuid, ca private key and device public key), the signature isn't verified (i deduce that the JWT is false). 
 I tried ti generate directly on the device a JWT (AT%JWT), but if i use it (with postman, i get an error 40100, this ok with SET). 
 Is it possible with a developper account to perform location requests (gps) with JWTs for each device ? 
 Thanks for your help 
 PS: i'm not using a nRF9160 DK but an Icarus Board (i can do tests with a DK however).

justin · Accepted Answer

How then to retrieve JWT ? 
 You can use the AT command directly, but you must ensure that the parameters are correct. See https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/libraries/networking/nrf_cloud.html#c.nrf_cloud_jwt_generate for generating JWTs to be used with the nRF Cloud REST API. It will create the JWT using the private key in the configured modem sec tag (CONFIG_ NRF_CLOUD_SEC_TAG). 
 Note that you do not need to both provision your device AND register a public key. See the use case explanation in https://api.nrfcloud.com/v1#tag/IP-Devices/operation/RegisterPublicKeys . The private key stored in your device must correspond to the public key provided to nRF Cloud. When creating a JWT on the device, you must use the sec tag where that private key is stored. 
 Have a look at the following sample for an example of using REST locations services from the device: https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/samples/cellular/nrf_cloud_rest_cell_location/README.html 
 The function nrf_cloud_rest_location_get does the REST API call and the JWT is generated automatically. 
 Is it possible with a developper account to perform location requests (gps) with JWTs for each device ? Yes, developer accounts get 500 requests per month. https://docs.nrfcloud.com/AccountAndTeamManagement/Plans/PlanOverview.html?h=plans#developer

NRF Cloud & Developer account

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