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Mastering OAuth 2.0

You're reading from   Mastering OAuth 2.0 Create powerful applications to interact with popular service providers such as Facebook, Google, Twitter, and more by leveraging the OAuth 2.0 Authorization Framework

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Product type Paperback
Published in Dec 2015
Publisher Packt
ISBN-13 9781784395407
Length 238 pages
Edition 1st Edition
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Toc

Table of Contents (17) Chapters Close

Preface 1. Why Should I Care About OAuth 2.0? FREE CHAPTER 2. A Bird's Eye View of OAuth 2.0 3. Four Easy Steps 4. Register Your Application 5. Get an Access Token with the Client-Side Flow 6. Get an Access Token with the Server-Side Flow 7. Use Your Access Token 8. Refresh Your Access Token 9. Security Considerations 10. What About Mobile? 11. Tooling and Troubleshooting 12. Extensions to OAuth 2.0 A. Resource Owner Password Credentials Grant B. Client Credentials Grant C. Reference Specifications Index

Appendix A. Resource Owner Password Credentials Grant

The resource owner password credentials grant is an additional grant type supported by the OAuth 2.0 specification. It isn't commonly used or supported by service providers due to its low level of security. In a nutshell, this grant type operates by utilizing the user's actual credentials to gain an access token. This is in stark contrast to the other grant types, where the client application is completely unaware of the user's credentials. However, in this grant type, users send their credentials to the client application to use on their behalf to access protected resources.

Once the client application has a user's credentials, it uses them to gain an access token, just as in the other grant types. In this sense, risk is mitigated slightly, compared to using the credentials directly, since tokens have limited scope and duration (unlike passwords). However, the passing and delegation of user credentials is...

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