What are the different OAuth 2.0 grant types?

What are the different OAuth 2.0 grant types?

OAuth 2.0 defines several grant types for different use cases. The main ones are Authorization Code, Implicit, Resource Owner Password Credentials, and Client Credentials.

Can you explain the Authorization Code grant type?

Sure! The Authorization Code grant type is used for server-side applications. It involves redirecting the user to the authorization server, where they log in and approve access. The server then redirects back with an authorization code that the application can exchange for an access token.

What about the Implicit grant type?

The Implicit grant type is designed for client-side applications, like single-page apps. It directly returns an access token in the URL after the user authorizes, without needing an intermediate authorization code.

When should I use the Resource Owner Password Credentials grant?

This grant type is suitable for trusted applications, like first-party apps, where the user can provide their credentials directly to the application. However, it's generally recommended to use other flows for better security.