Your application’s client and server need to communicate with each other. This communication highly relies on REST APIs. You often need to add a user authentication system as a feature in your app, and REST API also acts as a bridge for this.
There are many authentication methods that you can use with your REST APIs. Let’s discuss the three most common methods among the lot.
There are various HTTP security schemes that you can use with your REST APIs for authentication. For instance:
Another authentication method widely used with REST APIs is API keys. It provides first-time users with a unique generated key. When the user tries to access the requested resources, they use their API key. The API key tells the server this is the same user as before.
OAuth 2.0 (Open Authorization) is a standard developed to allow a user access to resources from a third-party application. It is an authorization protocol designed only to grant access to resources, and it works by using access tokens.
The access token is information that provides authorization to access resources on behalf of the user. Usually, the JSON Web Token (JWT) format is used for the access token.