ASP.NET Core 2.0 Identity

In a previous post, I showed how to use cookie authentication middleware to protect your web application. ASP.NET Core also provides a richer set of services, called Identity, to work with user authentication and management scenarios. For instance, in addition to authentication and password hashing, it provides features for registering new users, creating forgot & reset password tokens and their validation, two-factor authentication and authentication using external providers.

source http://www.c-sharpcorner.com/article/asp-net-core-2-0-identity/