4 papers
Information-Theoretic Distributed Point Functions with Shorter Keys
Hang Deng, Liang Feng Zhang
A t-private n-server Information-Theoretic Distributed Point Function ((t,n)-ITDPF) allows one to convert any point function f_{alpha,beta}(x): [N] -> G into n shares (secret keys)…
Information-Theoretic Authenticated PIR: From PIR-RV To APIR
Pengzhen Ke, Yuxuan Qin, Liang Feng Zhang
Private Information Retrieval (PIR) allows clients to retrieve database entries without leaking retrieval indices, yet malicious servers seriously compromise retrieval correctness.…
A Unified Framework for Constructing Information-Theoretic Private Information Retrieval
Liang Feng Zhang
Retrieving up-to-date information from a publicly accessible database poses significant threats to the user's privacy. {\em Private information retrieval} (PIR) protocols allow a u…
Consistent Estimation of Numerical Distributions under Local Differential Privacy by Wavelet Expansion
Puning Zhao, Zhikun Zhang, Bo Sun +4
Distribution estimation under local differential privacy (LDP) is a fundamental and challenging task. Significant progresses have been made on categorical data. However, due to dif…