Two-Server Private Information Retrieval with Optimized Download Rate and Result Verification
Information Theory
2023-06-09 v3 Cryptography and Security
math.IT
Abstract
Private Information Retrieval (PIR) schemes allow a client to retrieve any file of interest, while hiding the file identity from the database servers. In contrast to most existing PIR schemes that assume honest-but-curious servers, we study the case of dishonest servers. The latter provide incorrect answers and try to persuade the client to output the wrong result. We introduce several PIR schemes with information-theoretic privacy and result verification for the case of two servers. Security guarantees can be information-theoretical or computational, and the verification keys can be public or private. In this work, our main performance metric is the download rate.
Cite
@article{arxiv.2301.11730,
title = {Two-Server Private Information Retrieval with Optimized Download Rate and Result Verification},
author = {Stanislav Kruglik and Son Hoang Dau and Han Mao Kiah and Huaxiong Wang},
journal= {arXiv preprint arXiv:2301.11730},
year = {2023}
}
Comments
Accepted to IEEE International Symposium on Information Theory 2023