ATT-Auth: A Hybrid Protocol for Industrial IoT Attestation With Authentication

This paper addresses the problem of developing attestation techniques for Industrial Internet of Things systems. To ensure hardware security, the proposed attestation protocols are based on physically unclonable functions. Moreover, to achieve scalability, the proposed protocols do not calculate the reference checksum for every prover at the verifier, instead they use timing information. Thus, to attest multiple devices in large-scale networks, such as device swarms, the proposed protocols use timing information to detect any unintentional or malicious modification to a device’s memory contents. The analysis on an Atmel micro controller shows that the proposed protocols have a high probability of detecting malware with significantly lower computation overhead.