Enhancing Authentication and Authorization with OpenID
In this article, we will delve into how authentication and authorization operate with the integration of OpenID alongside OAuth, exploring the changes that OpenID Connect brings to the various Grant-Type Flows. It’s important to note that these Grant-Type Flows are essentially the same mechanisms previously utilized in OAuth 2.0, now with some modifications introduced by OpenID Connect (OIDC)
Advantages of OIDC
Reduction of Password Theft
OIDC enables Third-Party Sign-On, which significantly reduces the risk of password theft.
Enhanced Security Control
For instance, by incorporating Two-Factor Authentication, OIDC enhances overall security measures.
Improved User Experience
Through the implementation of Single Sign-On, OIDC streamlines the user experience, making access seamless across platforms.
Types of Grant-Type Flows
1- Authorization Code Grant-Type Flow
This mechanism undergoes modifications due to the addition of the ID Token and the user authentication process, which were not present in OAuth 2.0.
How It Works:
The process remains largely the same as in OAuth 2.0 but includes two additional steps:
Step 8
An ID Token is added alongside the Access Token.
Step 9
This step authenticates the user via the ID Token, ensuring the user’s identity is verified
2-Authorization Code With PKCE Grant-Type Flow
Similarly, this flow follows the previous mechanism with the sole addition of user authentication through the ID Token.
How It Works:
The procedure mirrors that found in OAuth 2.0, with two crucial additions:
Step 10
An ID Token is included with the Access Token.
Step 11
This step involves authenticating the user through the ID Token, confirming their identity securely.
Through these enhancements, OIDC significantly strengthens the security and efficiency of the OAuth 2.0 framework, offering a more robust solution for managing user access and authentication across systems.
