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

Creating an OAuth 2.0 client using the Client Credentials grant type

This recipe will help you create a client application using the Client Credentials grant type. The project shown in this recipe retrieves the user's profile from the running OAuth provider available. Unlike the other grant types, when using Client Credentials the application will access OAuth's protected resources on its own behalf, so the client application doesn't need any user's approval.

Getting ready

To run this recipe, make sure you have an OAuth 2.0 Provider running on your machine. I recommend you to use the project client-credentials-server presented in Chapter 2, Implementing Your Own OAuth 2.0 Provider. If you have any doubt about the source code presented in this recipe, do not hesitate to download the source code available on GitHub at Besides having an OAuth 2.0 Provider running, you will need Java 8, Maven...