This post is an update to my previous post on how to create a custom user store in dotnet core 2. It contains updated code for working with dotnet core 3.x, the Visual Studio 2019 MVC project template, and updated screenshots. The end result is the same, an in-memory user store to plug into the ASP .NET Core Identity system.

This post is an update to my previous post on how to create a custom password hasher in dotnet core 2. It contains updated code for working with dotnet core 3.x, the Visual Studio 2019 MVC project template, and updated screenshots. The end result is the same, a custom password hasher to plug into the ASP .NET Core Identity system.

In this post, I will look at how to extend the ASP .NET Core Identity membership system to use a custom user store. This will store users in memory and not a database. This would not be useful in a production application because the list of users resets every time the application is started. However, by customizing ASP .NET Core Identity, we gain a better understanding of the components and how they fit together. This tutorial requires Visual Studio 2017 and dotnet core 2.0.

In this post, I will look at how to extend the ASP .NET Core Identity membership system to use a custom class for hashing passwords. ASP .NET Core Identity is very extendable and extending it is a good way to get a better understanding of how the system works. We can customize it by providing new implementations to its interfaces. As with any custom security implementation, customization should be done with care and be backed by good reasons. That being said, lets have some fun. This tutorial requires Visual Studio 2017, dotnet core 2.0, and LocalDb.