Step 2: Once Visual Studio creates the project with MVC/Web API file references, we would have to add Nuget packages for following Once you are done, you will see a screen to select template, you can select "Empty" template with Checking "MVC" and "Web API" checkboxes, to generate the required folders. Step 1: Open your Visual Studio and Create a new project, by selecting File-> New -> Project -> Select "Web" (Left panel) and Select "ASP.NET web-application" (Right-pane), name it and click "OK" Step by step procedure to create token based authentication in Web API and C# finding a session on database) is likely to take more time than calculating an HMACSHA256 to validate a token and parsing its contents. Performance: we are not presenting any hard perf benchmarks here, but a network roundtrip (e.g. it would not be possible to sib your site, generate a POST request and re-use the existing authentication cookie because there will be none). Mobile ready: when you start working on a native platform (iOS, Android, Windows 8, etc.) cookies are not ideal when consuming a token-based approach simplifies this a lot.ĬSRF: since you are not relying on cookies, you don't need to protect against cross site requests (e.g. The token might be generated anywhere, hence your API can be called from anywhere with a single way of authenticating those calls. javascript, HTML, images, etc.), and your server side is just the API.ĭecoupling: you are not tied to any particular authentication scheme. The rest of the state lives in cookies or local storage on the client side.ĬDN: you can serve all the assets of your app from a CDN (e.g. Server side scalability): there is no need to keep a session store, the token is a self-contained entity that conveys all the user information. A token-based approach allows you to make AJAX calls to any server, on any domain because you use an HTTP header to transmit the user information. SourceĬross-domain / CORS: cookies + CORS don't play well across different domains. In other words: add one level of indirection for authentication - instead of having to authenticate with username and password for each protected resource, the user authenticates that way once (within a session of limited duration), obtains a time-limited token in return, and uses that token for further authentication during the session. Once their token has been obtained, the user can offer the token - which offers access to a specific resource for a time period - to the remote site. Allow users to enter their username and password in order to obtain a token which allows them to fetch a specific resource - without using their username and password. The general concept behind a token-based authentication system is simple. How does token based authentication works? Now a days, Web API is widely used because using it, it becomes easy to build HTTP services that reach a broad range of clients, including browsers, mobile devices, and traditional desktop applications. In one of our previous article, we have explained about how to create login and registration using ASP.NET MVC with database, now in this article, I have explained how we can authenticate user based on token using Web API and C#.
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