What is OAuth 2.0 and how does it relate to OpenID Connect?

What is OAuth 2.0 and how does it relate to OpenID Connect?

OAuth 2.0 is an authorization framework that allows third-party applications to obtain limited access to user accounts on an HTTP service. OpenID Connect is an identity layer on top of OAuth 2.0 that allows clients to verify the identity of the end-user.

Can you explain how OAuth 2.0 works in a practical scenario?

Sure! Imagine you want to use a photo editing app that needs access to your Google Photos. OAuth 2.0 allows the app to request access without sharing your Google password. You log in to Google, grant permission, and the app receives a token to access your photos.

What are the main differences between OAuth 2.0 and OpenID Connect?

The main difference is that OAuth 2.0 is for authorization, while OpenID Connect is for authentication. OAuth 2.0 allows access to resources, whereas OpenID Connect provides user identity information.

Are there any security concerns I should be aware of with OAuth 2.0?

Yes, some concerns include token leakage, improper implementation, and insufficient token expiration. It's crucial to follow best practices to mitigate these risks.