OAuth 2.0 and OpenID Connect
Understand and securely integrate industry-standard protocols for authorization (OAuth 2.0) and authentication (OpenID Connect) in your applications.
What is OAuth 2.0?
Welcome! In this lesson, we'll dive into OAuth 2.0 and OpenID Connect, two crucial protocols for modern web security.
First, let's understand OAuth 2.0. It's an industry-standard protocol for authorization. Think of it as a way to grant an application limited access to a user's resources without giving away their password.
- Authorization: Granting permission to do something.
- Authentication: Verifying who someone is.
OAuth 2.0 is NOT for authentication by itself, but it's often confused!
Who's Who in OAuth 2.0
OAuth 2.0 involves four key roles working together:
- Resource Owner: The user who owns the protected data (e.g., their photos on Google).
- Client: The application requesting access to the user's resources (e.g., a photo printing app).
- Authorization Server: The server that issues access tokens to the client after the resource owner's consent (e.g., Google's auth server).
- Resource Server: The server hosting the protected resources, capable of accepting access tokens (e.g., Google Photos API).
Understanding these roles is key to grasping the flow.
All lessons in this course
- Multi-Factor Authentication (MFA)
- OAuth 2.0 and OpenID Connect
- JWT Security & Best Practices
- Secure Password Storage & Credential Recovery