JWT Token - Consume REST POST API at client side

Question

I need to consume a REST API. RESTAPI will return an JWT token as a response , by calling REST POST method.

I need to decode and validate the JWT token at my end and then redirect users to certain URL's accordingly based on token expiry time. I have a shared secret code and the Client ID of the service.

 

If (token is expired)then redirect to loginpage ,

else

redirect to the webapplication.

 

I just need to consume the service. Hence i think , client side coding only will be enough to handle decoding and validation of token.

 

I am implementing this in Sharepoint 2013 , but normal c# code would cater to this too.

 

Any technical advice on this would be greatly helpful. Lloking forward to your response. Thanks all.