OAuth vs OpenID Connect - What's the difference

February 16, 2022

OAuth vs OpenID Connect - What's the difference

When it comes to cybersecurity, knowing the difference between OAuth and OpenID Connect is essential. Both protocols are widely used on the web to protect user privacy and sensitive data. However, they are not interchangeable, so it's vital to understand their differences.

What is OAuth?

OAuth stands for "Open Authorization" and is a protocol used to grant third-party access to web resources without disclosing the resource owner's credentials. It is commonly used by websites and applications to provide secure access to a user's information without requiring them to share their username and password.

OAuth is used in scenarios where users grant permissions to a third-party application to access their information on another site. An example of this is when you use Facebook to log into an app on your phone. In this scenario, Facebook is the authentication provider, and the third-party application uses OAuth to get permission to access your profile data without seeing your Facebook password.

What is OpenID Connect?

OpenID Connect is a standard protocol that extends OAuth 2.0 to provide a secure way to authenticate users in web applications. It adds an identity layer on top of OAuth to enable users to share their identity information with authorized third parties.

OpenID Connect is commonly used as a way to authenticate users and authorize access to protected resources, such as user profile data. When you log into a website using your Google or Microsoft account, you are using OpenID Connect.

What's the difference?

OAuth and OpenID Connect are two different protocols with different purposes. OAuth is used to grant access to resources, while OpenID Connect is used to authenticate users and get information about them.

OAuth is focused on user permissions and is designed to provide third-party access to web resources without the user having to share their password with the application. OpenID Connect builds on OAuth to provide authentication capabilities, enabling a site or application to authenticate a user and get information about them.

Both OAuth and OpenID Connect are critical to cybersecurity and play a significant role in protecting user data. Still, OpenID Connect includes an identity layer on top of OAuth, adding another layer of security to ensure that the user's identity is secure.

Conclusion

In conclusion, OAuth and OpenID Connect are both essential protocols for securing access to web resources, but they have different purposes. OAuth is used to grant third-party access to web resources without disclosing the user's credentials, while OpenID Connect is used to authenticate users and provide more secure identity management.

Both protocols are widely used and have become staples of modern web development, so it's essential to understand the differences between the two. Hopefully, this article has helped clarify the difference between OAuth and OpenID Connect's roles in cybersecurity protocols.

References

  1. OAuth
  2. OpenID Connect
  3. OAuth 2.0 and OpenID Connect by Auth0
  4. OAuth vs OpenID Connect – What’s the Difference? by Imperva

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