AI Authentication & Authorization
A production-pattern security layer for multi-tenant AI/LLM APIs — hashed API keys, JWT-based OAuth 2.0, tenant-tiered access control, and compliance audit logging, adversarially tested end-to-end.
Problem
Shared AI infrastructure needs machine-identity auth, tenant isolation, and cost-trackable audit trails before it can serve more than one customer safely.
Approach
Built and ran 17 success/failure tests on live AWS infrastructure across four modules, including deliberate adversarial attacks against each one.
Outcome
16 of 17 tests passed as designed; testing surfaced a real, reproducible refresh-token reuse gap — found, confirmed three times, and documented rather than hidden.
Published July 2026