Teamwork Makes TEE Work: Open and Resilient Remote Attestation on Decentralized Trust

Remote attestation (RA, the process of verifying that software running on a trusted computer processor is genuine and hasn't been tampered with) traditionally relies on a single central authority to verify trust, which creates security vulnerabilities. This paper introduces Janus, a new RA system that spreads trust across multiple parties using physical hardware features (PUF, or physically unclonable function, unique identifiers built into computer chips) and smart contracts (automated programs running on blockchain networks) to make the verification process more secure, flexible, and resistant to attacks.