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What steps would you take to implement OAuth 2.0 in your application?

Outline the process of integrating OAuth 2.0 to handle authentication, addressing the roles of client, resource owner, and authorization server.

Asked at Google, Facebook, Amazon

#oauth#authentication#authorization

Answer

  1. Register your application with the authorization server to obtain client credentials.
  2. Implement the authorization code flow:
    • Redirect users to the authorization server for login and consent.
    • Receive an authorization code as a redirect callback.
  3. Exchange the authorization code for an access token via a secure server-side request.
  4. Use the access token to access protected resources.
  5. Handle refresh tokens for long-lived access.

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