Guaranteeing local differential privacy on ultra-low-power systems

Woo Seok Choi, Matthew Tomei, Jose Rodrigo Sanchez Vicarte, Pavan Kumar Hanumolu, Rakesh Kumar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Sensors in mobile devices and IoT systems increasingly generate data that May contain private information of individuals. Generally, users of such systems are willing to share their data for public and personal benefit as long as their private information is not revealed. A fundamental challenge lies in designing systems and data processing techniques for obtaining meaningful information from sensor data, while maintaining the privacy of the data and individuals. In this work, we explore the feasibility of providing local differential privacy on ultra-low-power systems that power many sensor and IoT applications. We show that low resolution and fixed point nature of ultra-low-power implementations prevent privacy guarantees from being provided due to low quality noising. We present techniques, resampling and thresholding, to overcome this limitation. The techniques, along with a privacy budget control algorithm, are implemented in hardware to provide privacy guarantees with high integrity. We show that our hardware implementation, DP-Box, has low overhead and provides high utility, while guaranteeing local differential privacy, for a range of sensor/IoT benchmarks.

Original languageEnglish (US)
Title of host publicationProceedings - 2018 ACM/IEEE 45th Annual International Symposium on Computer Architecture, ISCA 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages561-574
Number of pages14
ISBN (Electronic)9781538659847
DOIs
StatePublished - Jul 19 2018
Event45th ACM/IEEE Annual International Symposium on Computer Architecture, ISCA 2018 - Los Angeles, United States
Duration: Jun 2 2018Jun 6 2018

Publication series

NameProceedings - International Symposium on Computer Architecture
ISSN (Print)1063-6897

Other

Other45th ACM/IEEE Annual International Symposium on Computer Architecture, ISCA 2018
CountryUnited States
CityLos Angeles
Period6/2/186/6/18

Keywords

  • Differential privacy
  • IoT
  • Low-power systems
  • Microcontrollers
  • RAPPOR
  • Randomized response

ASJC Scopus subject areas

  • Hardware and Architecture

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  • Cite this

    Choi, W. S., Tomei, M., Vicarte, J. R. S., Hanumolu, P. K., & Kumar, R. (2018). Guaranteeing local differential privacy on ultra-low-power systems. In Proceedings - 2018 ACM/IEEE 45th Annual International Symposium on Computer Architecture, ISCA 2018 (pp. 561-574). [8416855] (Proceedings - International Symposium on Computer Architecture). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISCA.2018.00053