IoT Notary: Sensor Data Attestation in Smart Environment
Nisha Panwar, Shantanu Sharma, Guoxi Wang, Sharad Mehrotra, Nalini, Venkatasubramanian, Mamadou H. Diallo, Ardalan Amiri Sani

TL;DR
IoT Notary is a framework that ensures trust in sensor data within IoT environments by providing verifiable proofs of data integrity, addressing privacy and security concerns in smart spaces.
Contribution
It introduces IoT Notary, a novel system for secure log sealing and data attestation in IoT, integrated into TIPPERS for real-time location services.
Findings
Verifies sensor data integrity with less than two seconds per day.
Imposes nominal overheads for verification.
Successfully deployed in a real-world campus environment.
Abstract
Contemporary IoT environments, such as smart buildings, require end-users to trust data-capturing rules published by the systems. There are several reasons why such a trust is misplaced --- IoT systems may violate the rules deliberately or IoT devices may transfer user data to a malicious third-party due to cyberattacks, leading to the loss of individuals' privacy or service integrity. To address such concerns, we propose IoT Notary, a framework to ensure trust in IoT systems and applications. IoT Notary provides secure log sealing on live sensor data to produce a verifiable `proof-of-integrity,' based on which a verifier can attest that captured sensor data adheres to the published data-capturing rules. IoT Notary is an integral part of TIPPERS, a smart space system that has been deployed at UCI to provide various real-time location-based services in the campus. IoT Notary imposes…
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