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  4. Tight Differential Privacy Guarantees for the Shuffle Model with <i>k</i>-Randomized Response
 
conference paper

Tight Differential Privacy Guarantees for the Shuffle Model with k-Randomized Response

Biswas, Sayan  
•
Jung, Kangsoo
•
Palamidessi, Catuscia
Sedes, F
•
Tawbi, N
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January 1, 2024
Foundations And Practice Of Security, Pt I, Fps 2023
16th International Symposium on Foundations and Practice of Security (FPS)

Most differentially private algorithms assume a central model in which a reliable third party inserts noise to queries made on datasets, or a local model where the data owners directly perturb their data. However, the central model is vulnerable via a single point of failure, and the local model has the disadvantage that the utility of the data deteriorates significantly. The recently proposed shuffle model is an intermediate framework between the central and local paradigms. In the shuffle model, data owners send their locally privatized data to a server where messages are shuffled randomly, making it impossible to trace the link between a privatized message and the corresponding sender. In this paper, we theoretically derive the tightest known differential privacy guarantee for the shuffle models with k-Randomized Response (k-RR) local randomizers, under histogram queries, and we denoise the histogram produced by the shuffle model using the matrix inversion method to evaluate the utility of the privacy mechanism. We perform experiments on both synthetic and real data to compare the privacy-utility trade-off of the shuffle model with that of the central one privatized by adding the state-of-the-art Gaussian noise to each bin. We see that the difference in statistical utilities between the central and the shuffle models shows that they are almost comparable under the same level of differential privacy protection.

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Type
conference paper
DOI
10.1007/978-3-031-57537-2_27
Web of Science ID

WOS:001280331400028

Author(s)
Biswas, Sayan  

École Polytechnique Fédérale de Lausanne

Jung, Kangsoo

Inria

Palamidessi, Catuscia

Institut Polytechnique de Paris

Editors
Sedes, F
•
Tawbi, N
•
Mosbah, M
•
Ahmed, T
•
Boulahia-Cuppens, N
•
Garcia-Alfaro, J
Date Issued

2024-01-01

Publisher

Springer Nature

Publisher place

Cham

Published in
Foundations And Practice Of Security, Pt I, Fps 2023
ISBN of the book

978-3-031-57536-5

978-3-031-57537-2

Series title/Series vol.

Lecture Notes in Computer Science; 14551

ISSN (of the series)

0302-9743

1611-3349

Start page

440

End page

458

Subjects

Differential privacy

•

Shuffle model

•

Privacy-utility optimization

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
SACS  
Event nameEvent acronymEvent placeEvent date
16th International Symposium on Foundations and Practice of Security (FPS)

Bordeaux, FRANCE

2023-12-11 - 2023-12-13

Available on Infoscience
January 31, 2025
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/246173
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