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Secure Sharing of Partially Homomorphic Encrypted IoT Data
ETH Zurich, Switzerland.
ETH Zurich, Switzerland.
ETH Zurich, Switzerland.
ETH Zurich, Switzerland.
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2017 (English)In: Proceedings of the International Conference on Embedded Networked Sensor Systems (ACM SenSys 2017), November 5-8, 2017, Delft, The Netherlands, 2017Conference paper, Published paper (Refereed)
Abstract [en]

IoT applications often utilize the cloud to store and provide ubiquitousaccess to collected data. This naturally facilitates data sharingwith third-party services and other users, but bears privacy risks,due to data breaches or unauthorized trades with user data. Toaddress these concerns, we present Pilatus, a data protection platformwhere the cloud stores only encrypted data, yet is still ableto process certain queries (e.g., range, sum). More importantly,Pilatus features a novel encrypted data sharing scheme based on reencryption,with revocation capabilities and in situ key-update. Oursolution includes a suite of novel techniques that enable efficientpartially homomorphic encryption, decryption, and sharing. Wepresent performance optimizations that render these cryptographictools practical for mobile platforms. We implement a prototypeof Pilatus and evaluate it thoroughly. Our optimizations achieve aperformance gain within one order of magnitude compared to stateof-the-art realizations; mobile devices can decrypt hundreds of datapoints in a few hundred milliseconds. Moreover, we discuss practicalconsiderations through two example mobile applications (Fitbitand Ava) that run Pilatus on real-world data.

Place, publisher, year, edition, pages
2017.
Keyword [en]
Secure Sharing, Encrypted Data Processing, Homomorphic Encryption
National Category
Computer Sciences
Identifiers
URN: urn:nbn:se:ri:diva-32978OAI: oai:DiVA.org:ri-32978DiVA, id: diva2:1170410
Conference
International Conference on Embedded Networked Sensor Systems (ACM SenSys 2017), November 5-8, 2017, Delft, The Netherlands
Available from: 2018-01-03 Created: 2018-01-03 Last updated: 2018-01-19Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • ieee
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  • de-DE
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Output format
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