This whitepaper provides a comprehensive guide to OAuth 2.0 and OpenID Connect, explaining their roles in modern digital identity. It traces the evolution from password-based systems to directories, cross-domain single sign-on, and the problems of password sharing. The paper details OAuth 2.0 as a framework for delegated authorization and describes how OpenID Connect adds authentication on top of it. It also covers key concepts such as tokens, validation principles, metadata, discovery, and various grant and flow types, while highlighting how platforms like Auth0 simplify implementation.

Join for free to read