TY - GEN
T1 - The Capacity of Single-Server Weakly-Private Information Retrieval
AU - Lin, Hsuan Yin
AU - Kumar, Siddhartha
AU - Rosnes, Eirik
AU - Amat, Alexandre Graell I.
AU - Yaakobi, Eitan
N1 - Publisher Copyright: © 2020 IEEE.
PY - 2020/6
Y1 - 2020/6
N2 - Weakly-private information retrieval (WPIR) is a variant of the private information retrieval problem in which a user wants to efficiently retrieve a file stored across a set of servers while tolerating some information leakage on the identity of the requested file to the servers. In this paper, we consider WPIR from a single-server database where the information leakage is measured in terms of the mutual information (MI) or maximal leakage (MaxL) privacy metrics. In particular, we establish a connection between the WPIR problem and rate-distortion theory, and fully characterize the optimal tradeoff between the download cost and the allowed information leakage under the MI and MaxL metrics, settling the single-server WPIR capacity.
AB - Weakly-private information retrieval (WPIR) is a variant of the private information retrieval problem in which a user wants to efficiently retrieve a file stored across a set of servers while tolerating some information leakage on the identity of the requested file to the servers. In this paper, we consider WPIR from a single-server database where the information leakage is measured in terms of the mutual information (MI) or maximal leakage (MaxL) privacy metrics. In particular, we establish a connection between the WPIR problem and rate-distortion theory, and fully characterize the optimal tradeoff between the download cost and the allowed information leakage under the MI and MaxL metrics, settling the single-server WPIR capacity.
UR - http://www.scopus.com/inward/record.url?scp=85090425172&partnerID=8YFLogxK
U2 - 10.1109/ISIT44484.2020.9174048
DO - 10.1109/ISIT44484.2020.9174048
M3 - منشور من مؤتمر
T3 - IEEE International Symposium on Information Theory - Proceedings
SP - 1053
EP - 1058
BT - 2020 IEEE International Symposium on Information Theory, ISIT 2020 - Proceedings
T2 - 2020 IEEE International Symposium on Information Theory, ISIT 2020
Y2 - 21 July 2020 through 26 July 2020
ER -