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This content will become publicly available on January 28, 2026

Title: DEXO: A Secure and Fair Exchange Mechanism for Decentralized IoT Data Markets
Opening up data produced by the Internet of Things (IoT) and mobile devices for public utilization can maximize their economic value. Challenges remain in the trustworthiness of the data sources and the security of the trading process, particularly when there is no trust between the data providers and consumers. In this paper, we propose DEXO, a decentralized data exchange mechanism that facilitates secure and fair data exchange between data consumers and distributed IoT/mobile data providers at scale, allowing the consumer to verify the data generation process and the providers to be compensated for providing authentic data, with correctness guarantees from the exchange platform. To realize this, DEXO extends the decentralized oracle network model that has been successful in the blockchain applications domain to incorporate novel hardware-cryptographic co-design that harmonizes trusted execution environment, secret sharing, and smart contract-assisted fair exchange. For the first time, DEXO ensures end-to-end data confidentiality, source verifiability, and fairness of the exchange process with strong resilience against participant collusion. We implemented a prototype of the DEXO system to demonstrate feasibility. The evaluation shows a moderate deployment cost and significantly improved blockchain operation efficiency compared to a popular data exchange mechanism.  more » « less
Award ID(s):
2247561 2238680
PAR ID:
10583640
Author(s) / Creator(s):
; ; ;
Publisher / Repository:
IEEE
Date Published:
Journal Name:
IEEE Internet of Things Journal
ISSN:
2327-4662
Page Range / eLocation ID:
1 to 1
Subject(s) / Keyword(s):
IoT Data Market, Fair Exchange, Decentralized System, Trusted Hardware
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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