OAuth 2.0 & OpenID Connect (OIDC)

Industry-standard authorization framework that allows third-party applications to obtain limited access to user accounts without sharing passwords.

STAFF ENGINEER TAKEAWAY: Authorization Code Flow with PKCE (Proof Key for Code Exchange) is mandatory for modern single-page and mobile apps.

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More Topics in 9. Security & Auth

🎫JSON Web Tokens (JWT) Stateless Auth

A compact, URL-safe means of representing signed claims (Header.Payload.Signature) transferred between client and microservices statelessly.

🔒TLS 1.3 Cryptographic Handshake

The cryptographic protocol that establishes authenticated, end-to-end encrypted HTTPS communication over TCP in a single 1-RTT round trip.

👥Role-Based Access Control (RBAC)

Restricts system access by grouping permissions into predefined roles (Admin, Editor, Viewer) and assigning users to roles.

🧬Attribute-Based Access Control (ABAC)

Evaluates access dynamically using boolean policy rules combining Subject attributes, Resource attributes, Action attributes, and Environmental context.