MBA-715: Implement Session Management and NIST 800-53 IA-11 Compliant Re-authentication

[devin-ai-integration]

MBA-715: Implement Session Management and NIST 800-53 IA-11 Compliant Re-authentication

Summary

This PR implements 19 standalone Java classes for session management and NIST 800-53 IA-11 compliant re-authentication in the Common module. This is Part 1.5 of the microservices conversion epic, designed to be framework-agnostic and ready for future integration with Part 1.1 (Core Framework) and Part 1.2 (Authenticator Management).

Key Components Implemented:

• Session Model (gov.uspto.session.model): Core session entity with NIST IA-11 compliance fields for tracking re-authentication requirements
• Session Management (gov.uspto.session.management): SessionManager orchestrator, SessionStore interface, SessionFactory, SessionValidator
• Re-authentication Logic (gov.uspto.session.reauth): Policy-based re-authentication triggers for privilege escalation, role changes, security attribute changes, and timeouts
• Security Controls (gov.uspto.session.security): Cryptographically secure session IDs (SecureRandom), AES-GCM encryption, anti-hijacking measures (IP/User-Agent binding), session tokens
• Lifecycle Management (gov.uspto.session.lifecycle): Session creation/termination/renewal services, concurrent session management

NIST 800-53 IA-11 Compliance:

• Time-based re-authentication (configurable timeout periods)
• Privilege escalation detection (placeholder for Part 1.2 integration)
• Role change detection (placeholder for Part 1.2 integration)
• Security attribute change monitoring
• Organization-defined policy support

Testing:

• 5 comprehensive test classes with 53 passing unit tests
• Security-specific test scenarios (encryption, session hijacking prevention, ID uniqueness)
• Session lifecycle validation tests
• Re-authentication trigger logic tests

Dependencies:

• Added BouncyCastle (bcprov-jdk15on 1.70) for enhanced cryptographic support

Review & Testing Checklist for Human

⚠️ IMPORTANT: This is standalone code without web framework integration. The following items require careful review:

• Verify NIST 800-53 IA-11 compliance requirements - Review the re-authentication triggers (ReauthenticationPolicy, ReauthenticationTrigger) to ensure they meet your organization's security requirements. The implementation supports time-based, privilege escalation, role change, and security attribute change triggers.

• Review placeholder logic for authentication integration - PrivilegeChangeDetector has placeholder methods (getCurrentPrivileges(), getCurrentRole()) that read from session security attributes. Verify this approach is acceptable until Part 1.2 (Authenticator Management) is implemented.

• Confirm SessionStore interface design - Only an in-memory test implementation exists (InMemorySessionStore). Production will need Redis, database, or other persistent storage. Review the interface to ensure it supports your planned storage backend.

• Validate security implementations - Review SessionEncryption (AES-GCM), SessionIdGenerator (SecureRandom), and SessionHijackingPrevention (IP/User-Agent binding) to ensure they meet your security standards. Note that key management strategy for encryption is not yet defined.

• Test concurrent session limits - The ConcurrentSessionManager enforces configurable session limits per user. Verify the logic for terminating oldest sessions when limits are exceeded aligns with your requirements.

Test Plan

Since this is standalone code without web integration:

1. Review the unit tests - All 53 tests pass. Review SessionTest, SessionManagerTest, SessionSecurityTest, ReauthenticationTest, and SessionLifecycleTest to understand the behavior.

2. Verify compilation - Run mvn compile to ensure the code compiles successfully (already verified in this PR).

3. Check for integration points - Review how this will integrate with Part 1.1 (Core Framework) when web capabilities are added. The design uses interfaces (SessionStore) and dependency injection to support future integration.

Notes

• Framework-agnostic design: All classes work without Spring or web frameworks, but are designed for easy integration when Part 1.1 provides web infrastructure.
• No production SessionStore implementation: Only in-memory test implementation exists. Production will need persistent storage (Redis, database, etc.).
• Placeholder authentication logic: Some methods in PrivilegeChangeDetector are placeholders for Part 1.2 integration.
• Configuration externalization: Timeout periods, re-authentication policies, and security parameters are configurable through constructor parameters and builder patterns.

Session URL: https://app.devin.ai/sessions/5acc9a7365db477cabc41d2468043917
Requested by: Jake Cosme (jake@cognition.ai) / @jakexcosme

[devin-ai-integration]

🤖 Devin AI Engineer

I'll be helping with this pull request! Here's what you should know:

✅ I will automatically:

• Address comments on this PR. Add '(aside)' to your comment to have me ignore it.
• Look at CI failures and help fix them

Note: I can only respond to comments from users who have write access to this repository.

⚙️ Control Options:

• Disable automatic comment and CI monitoring