The Capacity of Single-Server Weakly-Private Information Retrieval
The Capacity of Single-Server Weakly-Private Information Retrieval
复制标题
单服务器弱隐私信息检索能力
DOI:
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Eitan Yaakobi
中科院分区:
文献类型:
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作者:
Hsuan;Siddhartha Kumar;E. Rosnes;A. Graell i Amat;Eitan Yaakobi
A private information retrieval (PIR) protocol guarantees that a user can privately retrieve files stored in a database without revealing any information about the identity of the requested file. Existing information-theoretic PIR protocols ensure perfect privacy, i.e., zero information leakage to the servers storing the database, but at the cost of high download. In this work, we present weakly-private information retrieval (WPIR) schemes that trade off perfect privacy to improve the download cost when the database is stored on a single server. We study the tradeoff between the download cost and information leakage in terms of mutual information (MI) and maximal leakage (MaxL) privacy metrics. By relating the WPIR problem to rate-distortion theory, the download-leakage function, which is defined as the minimum required download cost of all single-server WPIR schemes for a given level of information leakage and a fixed file size, is introduced. By characterizing the download-leakage function for the MI and MaxL metrics, the capacity of single-server WPIR is fully described.
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影响因子:
2.5
作者:
Sajani Vithana;Karim A. Banawan;S. Ulukus
通讯作者:
Sajani Vithana;Karim A. Banawan;S. Ulukus
DOI:
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发表时间:
2019
期刊:
Abstracts of papers - IEEE International Symposium on Information Theory
影响因子:
--
作者:
Samy, I;Tandon, R;Lazos, L
通讯作者:
Lazos, L
影响因子:
2.5
作者:
Issa, Ibrahim;Wagner, Aaron B.;Kamath, Sudeep
通讯作者:
Kamath, Sudeep
影响因子:
2.5
作者:
Jia, Zhuqing;Sun, Hua;Jafar, Syed Ali
通讯作者:
Jafar, Syed Ali
DOI:
10.1109/isit44484.2020.9174334
发表时间:
2020
期刊:
2020 IEEE International Symposium on Information Theory (ISIT
影响因子:
--
作者:
Zhou, Ruida;Guo, Tao;Tian, Chao
通讯作者:
Tian, Chao