#React native decode jwt how to

This article will explore how to perform JWT authentication in React, covering the essentials for sending a request to the server, receiving the JWT token via cookies, and protecting routes. So long story short, nothing should prevent you from using this library in react-native, but you will need to bring in your own atob polyfill.įeel free to reach out if using the core-js polyfill wouldn't work, but closing this for now. JSON Web Tokens (JWT) is a widely used web authentication mechanism, providing a secure and compact way to transmit information. We believe we do not want to ship the polyfill to all our users, knowing that the majority has no need for this in the first place. Before passing token parts to Buffer you have to replace all '-' by '+' and all '' by '/'. The only thing you are missing is that buffers are not encoded in Base64 but in 'URL Base64'. Exposing the key to the frontend makes JWT useless because anyone can generate tokens with any payload value, signed with your key. The JWT key is only here to sign the token, so yes can extract the data without the key. However, as atob is supported in node, we also explicitly support node without a polyfill now.Īs of v4, any platform that has no access to atob, should rely on their own polyfill such as core-js as mentioned by reason we no longer ship an atob polyfill is because the majority has support for atob (see browser support and node support), and those that do not can use a polyfill. You can decode the JWT's payload on the frontend without the key, but you'll need the key to validate the token (meaning verify it was generated using the given key). So please be sure that you are accessing only these fields, there is no role or userid field. This is also called out in the repository's description:ĭecode JWT tokens useful for browser applications. Your sample token looks like a valid token, and it should be successfully decoded. React-native-app-auth can support PKCE only if your Identity Provider supports it. It wraps the native AppAuth-iOS and AppAuth-Android libraries and can support PKCE. React-native-app-auth is an SDK for communicating with OAuth2 providers. jwt-decode had always been a browser-focussed library, which happened to work on node or other platforms as well because of the atob polyfill. A library to consider for native OAuth is react-native-app-auth.

React native decode jwt