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

Adding custom claims on JWT

Sometimes we need to handle some specific scenarios that deviate from generic applications. As an example, the Resource Server might need more data about the Resource Owner and to avoid round-trips between the Resource Server and the Authorization Server, a self contained access token can carry more information within the payload. This recipe will help you to handle exactly this kind of situation.


This recipe is based on the solution provided by Eugen Parachiv at

Getting ready

This recipe will be created as a Spring Boot application with Java 8, H2 database, Maven, Spring Web, and Spring Security. To ease the project creation step, use Spring Initializr at and reference Web, JPA, H2, and Security as dependencies (that will declare properly all the Spring Boot starters needed for this recipe). As explained earlier in the previous chapters you also need to define the Artifact and Group name...