Book Image

Hands-On Spring Security 5 for Reactive Applications

By : Tomcy John
Book Image

Hands-On Spring Security 5 for Reactive Applications

By: Tomcy John

Overview of this book

Spring Security enables developers to seamlessly integrate authorization, authentication, and a range of security features for complex enterprise applications. This book provides a hands-on approach to developing reactive applications using Spring and will help you get up and running in no time. Complete with step-by-step explanations, practical examples, and self-assessment questions, the book begins by explaining the essential concepts of reactive programming, Spring Framework, and Spring Security. You’ll then learn about a variety of authentication mechanisms and how to integrate them easily with a Spring MVC application. You’ll also understand how to achieve authorization in a Spring WebFlux application using Spring Security. Furthermore, the book will take you through the configuration required to implement OAuth2 for securing REST APIs, and guide you in integrating security in microservices and serverless applications. Finally, you’ll be able to augment add-ons that will enhance any Spring Security module. By the end of the book, you’ll be equipped to integrate Spring Security into your Java enterprise applications proficiently.
Table of Contents (15 chapters)
Title Page
Copyright and Credits
Packt Upsell

Remember-me authentication

We will be reusing and enhancing the example that we built in Chapter 2Deep Diving into Spring Security (jetty-db-basic-authentication), to explain how Spring Security can be used to achieve remember me, or persistent login, functionality. In the example that we are going to reuse, we have used basic authentication, in which user credentials are stored in a MySQL database.

Remember me functionality is achieved in Spring Security by sending cookies to the browser when the user chooses to remember his/her credentials on the client side. The cookie can be configured to be stored in the browser for a stipulated time. If the cookie exists and is valid, the next time the user accesses the application, they are taken straight to the user's home page and avoid explicit authentication with a username/password combination.

Remember me functionality can be achieved using two approaches:

  • Hash-based tokens: Username, expiry time, password, and a private key are hashed and send...