Module 29: Token and Federated Authentication

MODULE 29 · 2 LESSONS

Add token and delegated-login patterns to the existing sessions and RBAC path without repeating insecure tutorial shortcuts.

Project checkpoint: Threat-model a mobile CourseFlow client and a third-party calendar integration, then select the correct authorization flow for each.

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Module 29 learning loopA four-step visual showing claims, signature verification, access lifetime, refresh rotation.Module 29 learning loop1Claims2SignatureVerification3Access Lifetime4Refresh Rotation

Module 29 learning loop

  1. 1Claims
  2. 2Signature Verification
  3. 3Access Lifetime
  4. 4Refresh Rotation
Module 29 learning loop: a practical sequence used in this lesson.

What this module changes in your work

  • Use short-lived signed access tokens only where their portability is worth revocation and storage complexity.
  • Separate delegated authorization from identity, then use Authorization Code with PKCE for public clients.
  • Use claims, signature verification, access lifetime in one coherent implementation.
  • Complete this evidence-backed checkpoint: Threat-model a mobile CourseFlow client and a third-party calendar integration, then select the correct authorization flow for each.

Lessons

PROJECT CHECKPOINT

Turn token and federated authentication into evidence

Threat-model a mobile CourseFlow client and a third-party calendar integration, then select the correct authorization flow for each.

  • Write acceptance criteria for claims before implementation.
  • Keep the change small enough that a reviewer can connect it to the intended behavior.
  • Use the most direct check available for signature verification and save the result.
  • Record one decision you would keep and one you would revisit after feedback.

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