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


This chapter introduces how JSON Web Tokens (JWT) can be safely used to carry client information to allow Resource Servers to locally validate access tokens. This chapter will guide you through the usage of JWT and its corresponding representations such as JWS and JWE that respectively define integrity protection and confidentiality of the JWT payload. There are also some advanced topics being covered, such as how to use asymmetric signatures and how the client can prove the possession of a given access token.


It's important to bear in mind that even though we are signing or encrypting the JWT payload, all the connections must be performed using TLS/SSL in production. We are not using TLS/SSL just because of didactical reasons.