OAuth

The Gateway to Secure Authorization #

Introduction #

OAuth (Open Authorization) is an open standard for token-based authentication and authorization on the Internet. It allows an end user’s account information to be used by third-party services, such as Facebook, without exposing the user’s password.

How OAuth Works #

OAuth works by delegating user authentication to the service that hosts the user account and authorizing third-party applications to access the user account. OAuth wraps up all security details into a single token, allowing the client to share its user resources without sharing all of its data and privileges.

OAuth Flows #

OAuth has several different “flows” for different types of applications:

  1. Authorization Code Flow: This is the most common flow, typically used by server-side applications.

  2. Implicit Flow: This is used by applications that are unable to securely store the client secret.

  3. Password Flow: This is used by trusted applications, such as those owned by the service itself.

  4. Client Credentials Flow: This is used when the client itself is the resource owner.

Learning Resources #

Here are some suggestions for learning OAuth, which will help you become more proficient in implementing secure authorization:

Books #

Miscellaneous #