This blog post will explore extracting a JWT token from incoming requests using C#.
We will explore two methods using Minimal APIs, but it's the same process for MVC Controllers.
JSON Web Tokens (JWT) have become famous for securing web applications and APIs. JWTs provide a way to transmit claims between parties securely and are widely used for authentication and authorization purposes.
Check out this article how to set up JWT Authentication in your project:
Table of Contents
Method 1: Getting JWT from Authentication Context
This is the best way because it doesn't rely on the HTTP Headers. It uses the Authentication process instead.
PS.: The Authentication pipeline should be processed at this time.
Method 2: Parsing JWT Token from HTTP Headers
To retrieve the JWT token from a request, we need to access the request headers and extract the value of the "Authorization" header.
Here's a second example of how to parse the JWT token from a request:
Extracting a JWT token from a request is a fundamental step in securing web applications and APIs.
Remember to handle error scenarios and follow best practices to ensure the security of your application.