4 papers
Your Privacy My Cloak: Backdoor Attacks on Differentially Private Federated Learning
Xiaolin Li, Ning Wang, Ninghui Li +1
Prior research suggests that differential privacy (DP) can enhance the robustness of federated learning (FL) against backdoor attacks. In this paper, we challenge this assumption.…
A Low-Complexity Scheme for Multi-Message Private Information Retrieval
Ningze Wang, Anoosheh Heidarzadeh, Alex Sprintson
Private Information Retrieval (PIR) is a fundamental problem in the broader fields of security and privacy. In recent years, the problem has garnered significant attention from the…
A Linear Programming Approach to Private Information Retrieval
Anoosheh Heidarzadeh, Ningze Wang, Alex Sprintson
This work presents an algorithmic framework that uses linear programming to construct \emph{addition-based Private Information Retrieval (AB-PIR)} schemes, where retrieval is perfo…
A New Approach to Harnessing Side Information in Multi-Server Private Information Retrieval
Ningze Wang, Anoosheh Heidarzadeh, Alex Sprintson
This paper presents new solutions for Private Information Retrieval (PIR) with side information. This problem is motivated by PIR settings in which a client has side information ab…