Book Image

OAuth 2.0 Cookbook

By : Adolfo Eloy Nascimento
Book Image

OAuth 2.0 Cookbook

By: Adolfo Eloy Nascimento

Overview of this book

OAuth 2.0 is a standard protocol for authorization and focuses on client development simplicity while providing specific authorization flows for web applications, desktop applications, mobile phones, and so on. This book also provides useful recipes for solving real-life problems using Spring Security and creating Android applications. The book starts by presenting you how to interact with some public OAuth 2.0 protected APIs such as Facebook, LinkedIn and Google. You will also be able to implement your own OAuth 2.0 provider with Spring Security OAuth2. Next, the book will cover practical scenarios regarding some important OAuth 2.0 profiles such as Dynamic Client Registration, Token Introspection and how to revoke issued access tokens. You will then be introduced to the usage of JWT, OpenID Connect, and how to safely implement native mobile OAuth 2.0 Clients. By the end of this book, you will be able to ensure that both the server and client are protected against common vulnerabilities.
Table of Contents (16 chapters)
Title Page
About the Author
About the Reviewer
Customer Feedback

Protecting the Authorization Server from invalid redirection

This recipe will present you with the importance of defining a redirection URI when registering client applications. By defining a redirection URI, the client always needs to send the redirection URI on the authorization request, which must be validated by the Authorization Server. Redirect URI validation is extremely important when using the Implicit grant type, because the client can't authenticate when redirecting the user so she grant permissions to her resources.

Getting ready

To run this recipe, you will need Java 8, Maven, Spring Web, and Spring Security. To ease the project creation step, use Spring Initializr at and define the dependencies as Web and Security (that will declare properly all the spring boot starters needed for this recipe). Do not forget to set up the Artifact and Group names.

How to do it...

This recipe creates the project uri-validation, which is available on GitHub in the Chapter08...