Breaking down JSON Web Tokens
$14.99
Minimum price
$14.99
Suggested price

Breaking down JSON Web Tokens

From pros and cons to building and revoking

About the Book

JSON Web Tokens, or JWTs, are self-contained, portable, stateless tokens that are often issued by identity providers or otherwise used to safely transmit state between different parts of a system.

This book will dive deep into various aspects of JWTs, from creation to revocation. You'll also learn about all the pieces of a JWT and how you can validate them, should you be building an API or microservice that is presented with one.

About the Author

The FusionAuth Team
The FusionAuth Team

Brian Pontarelli is CEO and founder of FusionAuth.

Dan Moore is head of developer relations at FusionAuth.

Table of Contents

  • What are JWTs
  • Building a Secure Signed JWT
    • Definitions
    • Out of scope
    • Security considerations
    • Creating tokens
    • Holding tokens
    • Consuming a JWT
    • In conclusion
  • Pros and Cons of JWTs
    • JWTs expire at specific intervals
    • JWTs are signed
    • JWTs aren’t easily revocable
    • JWTs have exploits
    • Sessions as an alternative
  • Revoking JWTs & JWT Expiration
    • Reduce the duration of the JWT
    • Rotate keys
    • Build a deny list
    • Conclusion
  • Anatomy of a JWT
    • The header
    • The body
    • Signature
    • Limits
    • Conclusion
  • Conclusion

The Leanpub 60-day 100% Happiness Guarantee

Within 60 days of purchase you can get a 100% refund on any Leanpub purchase, in two clicks.

See full terms

Do Well. Do Good.

Authors have earned$11,595,069writing, publishing and selling on Leanpub, earning 80% royalties while saving up to 25 million pounds of CO2 and up to 46,000 trees.

Learn more about writing on Leanpub

Free Updates. DRM Free.

If you buy a Leanpub book, you get free updates for as long as the author updates the book! Many authors use Leanpub to publish their books in-progress, while they are writing them. All readers get free updates, regardless of when they bought the book or how much they paid (including free).

Most Leanpub books are available in PDF (for computers), EPUB (for phones and tablets) and MOBI (for Kindle). The formats that a book includes are shown at the top right corner of this page.

Finally, Leanpub books don't have any DRM copy-protection nonsense, so you can easily read them on any supported device.

Learn more about Leanpub's ebook formats and where to read them

Write and Publish on Leanpub

You can use Leanpub to easily write, publish and sell in-progress and completed ebooks and online courses!

Leanpub is a powerful platform for serious authors, combining a simple, elegant writing and publishing workflow with a store focused on selling in-progress ebooks.

Leanpub is a magical typewriter for authors: just write in plain text, and to publish your ebook, just click a button. (Or, if you are producing your ebook your own way, you can even upload your own PDF, EPUB and/or MOBI files and then publish with one click!) It really is that easy.

Learn more about writing on Leanpub