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Phase 10 · Authentication & Authorization

Topics

OAuth 2.0

Part of the Backend Developer Roadmap.

Summary

An open standard that lets a user grant your app limited access to their account on another service (Google, GitHub) without ever sharing their password with you.

How to Learn This

  • 1Trace through the OAuth 'authorization code' flow step by step on paper.
  • 2Implement 'Sign in with GitHub' using a library like Passport or a raw OAuth flow.
  • 3Learn the difference between OAuth (authorization) and OpenID Connect (authentication).

Previous

JWT

Next

Passport.js

More topics in Authentication & Authorization

SessionsJWTPassport.jsPassword Hashing (bcrypt)Role-Based Access Control (RBAC)Refresh TokensSocial Login (Google/GitHub)API KeysMulti-Factor AuthenticationSingle Sign-On (SSO)
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