An Interposer-Based Root of Trust: Seize the Opportunity for Secure System-Level Integration of Untrusted Chiplets
This addresses security challenges in system-level integration for hardware designers, but it appears incremental as it builds on existing interposer technology.
The paper tackles the problem of securely integrating untrusted commodity chiplets in system-level designs by proposing an interposer-based root of trust, achieving secure integration through a security-providing active interposer and providing detailed physical design results to demonstrate efficacy.
Leveraging 2.5D interposer technology, we advocate the integration of untrusted commodity components/chiplets with physically separate, entrusted logic components. Such organization provides a modern root of trust for secure system-level integration. We showcase our scheme by utilizing industrial ARM components that are interconnected via a security-providing active interposer, and thoroughly evaluate the achievable security via different threat scenarios. Finally, we provide detailed end-to-end physical design results to demonstrate the efficacy of our proposed methodology.