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Aggregation and transformation of vector-valued messages in the shuffle model of differential privacy

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Scott, Mary, Cormode, Graham and Maple, Carsten (2022) Aggregation and transformation of vector-valued messages in the shuffle model of differential privacy. IEEE Transactions on Information Forensics and Security, 17 . pp. 612-627. doi:10.1109/TIFS.2022.3147643

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Official URL: http://dx.doi.org/10.1109/TIFS.2022.3147643

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Abstract

Advances in communications, storage and computational technology allow significant quantities of data to be collected and processed by distributed devices. Combining the information from these endpoints can realize significant societal benefit but presents challenges in protecting the privacy of individuals, especially important in an increasingly regulated world. Differential privacy (DP) is a technique that provides a rigorous and provable privacy guarantee for aggregation and release. The Shuffle Model for DP has been introduced to overcome challenges regarding the accuracy of local-DP algorithms and the privacy risks of central-DP. In this work we introduce a new protocol for vector aggregation in the context of the Shuffle Model. The aim of this paper is twofold; first, we provide a single message protocol for the summation of real vectors in the Shuffle Model, using advanced composition results. Secondly, we provide an improvement on the bound on the error achieved through using this protocol through the implementation of a Discrete Fourier Transform, thereby minimizing the initial error at the expense of the loss in accuracy through the transformation itself. This work will further the exploration of more sophisticated structures such as matrices and higher-dimensional tensors in this context, both of which are reliant on the functionality of the vector case.

Item Type: Journal Article
Subjects: Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software
Divisions: Faculty of Science, Engineering and Medicine > Science > Computer Science
Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group)
Library of Congress Subject Headings (LCSH): Computer security, Computer networks -- Security measures, Artificial intelligence, Data mining, Computer programming, Data encryption (Computer science)
Journal or Publication Title: IEEE Transactions on Information Forensics and Security
Publisher: IEEE
ISSN: 1556-6013
Official Date: 28 January 2022
Dates:
DateEvent
28 January 2022Published
9 January 2022Accepted
Volume: 17
Page Range: pp. 612-627
DOI: 10.1109/TIFS.2022.3147643
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
EP/R007195/1Academic Centres of Excellence in Cyber Security Research University of WarwickUNSPECIFIED
EP/S035362/1PETRAS National Centre of Excellence for IoT Systems CybersecurityUNSPECIFIED
ERC-2014-CoG 647557European Research Councilhttp://dx.doi.org/10.13039/501100000781

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