Title
Optimal Mechanisms Under Maximal Leakage
Abstract
Side channels represent a broad class of security vulnerabilities in practical systems. Because completely eliminating side channels often leads to prohibitively high overhead, there is a need for principled techniques that trade off cost and leakage. Maximal leakage (MaxL) has been introduced as an operationally-interpretable leakage metric well-suited to side channels. We study the optimal trade-off between MaxL and expected costs. We demonstrate that for an important class of cost functions, optimal protection can be achieved using a combination of at most two deterministic schemes. We discuss the implications of this result for practical implementation and provide a fast heuristic algorithm for finding the best deterministic mechanism, which has a bounded suboptimality guarantee.
Year
DOI
Venue
2020
10.1109/CNS48642.2020.9162276
2020 IEEE Conference on Communications and Network Security (CNS)
Keywords
DocType
ISSN
operationally-interpretable leakage metric,side channels,security vulnerabilities,maximal leakage,deterministic mechanism,optimal protection,MaxL
Conference
2474-025X
ISBN
Citations 
PageRank 
978-1-7281-4761-1
0
0.34
References 
Authors
5
3
Name
Order
Citations
PageRank
Benjamin Wu100.34
Aaron B. Wagner232237.39
G. Edward Suh32721208.03