ASP.NET Core 2.0 Authentication with local logins – Implementing claims transformation

ASP.NET Core 2.0 makes it very easy and straightforward to setup a cookie authentication mechanism in your application. Framework provides numerous ways to achieve that, with or without ASP.NET Core Identity membership system.

This post is part of a series on ASP.NET Core 2.0 Authentication and I am about to talk about cookie authentication and claims transformation.
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Cookies

ASP.NET Core 2.0 Cookie Authentication – Local logins

ASP.NET Core 2.0 makes it very easy and straightforward to setup a cookie authentication mechanism in your application. Framework provides numerous ways to achieve that, with or without ASP.NET Core Identity membership system.

This post is part of a series on ASP.NET Core 2.0 Authentication and I am about to talk Cookie Authentication without ASP.NET Core Identity. I will show how to setup, login and logout using local logins, a custom implementation of a membership system. In the coming examples I will show how to simply secure your ASP.NET Core 2.0 MVC application using cookies and in-memory stored users, though they could be stored anywhere, database, flat files, etc.
In coming blog posts I am going to show a more appropriate way to do the local login authentication, using a database, signing-up users, transforming their claims, etc., but first let’s see something quick and simple.
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