Title
Differentially Private Histograms in the Shuffle Model from Fake Users
Abstract
There has been much recent work in the shuffle model of differential privacy, particularly for approximate d-bin histograms. While these protocols achieve low error, the number of messages sent by each user—the message complexity—has so far scaled with d or the privacy parameters. The message complexity is an informative predictor of a shuffle protocol’s resource consumption. We present a protocol whose message complexity is two when there are sufficiently many users. The protocol essentially pairs each row in the dataset with a fake row and performs a simple randomization on all rows. We show that the error introduced by the protocol is small, using rigorous analysis as well as experiments on real-world data. We also prove that corrupt users have a relatively low impact on our protocol’s estimates.
Year
DOI
Venue
2022
10.1109/SP46214.2022.9833614
2022 IEEE Symposium on Security and Privacy (SP)
Keywords
DocType
ISSN
Differential-Privacy,Shuffle-Model,Histograms,Attacks,Theory
Conference
1081-6011
ISBN
Citations 
PageRank 
978-1-6654-1317-6
0
0.34
References 
Authors
9
2
Name
Order
Citations
PageRank
Albert Cheu123.08
Maxim Zhilyaev200.34