What are the differences between OAuth and OpenID for MVC apps?

What are the differences between OAuth and OpenID for MVC apps?

OAuth is primarily an authorization framework, while OpenID is an authentication protocol. OAuth allows third-party services to exchange information without sharing passwords, whereas OpenID lets users log in to multiple services with one identity.

Can you give me an example of how each is used in an MVC app?

Sure! In an MVC app, OAuth might be used to allow users to log in with their Google account, granting access to their profile data. OpenID could be used to authenticate users across different sites, allowing them to use the same credentials.

Which one should I use for my new project?

It depends on your needs. If you need to authenticate users, go with OpenID. If you need to authorize access to resources, OAuth is the better choice.

Are there any security concerns I should be aware of?

Yes, both protocols have their own security considerations. For OAuth, ensure you use secure tokens and validate redirect URIs. For OpenID, be cautious of phishing attacks and ensure proper validation of identity providers.