Improved Weakly Private Information Retrieval Codes
Improved Weakly Private Information Retrieval Codes
复制标题
改进的弱隐私信息检索代码
DOI:
10.1109/isit50566.2022.9834396
复制
发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Liu, Tie
中科院分区:
文献类型:
--
作者:
Qian, Chengyuan;Zhou, Ruida;Tian, Chao;Liu, Tie
We study the problem of weakly private information retrieval (W-PIR), where a user wishes to retrieve a desired message from N non-colluding servers in a way that the privacy leakage regarding the desired message’s identity is less than or equal to a threshold. We propose a new code construction which significantly improves upon the best known result in the literature, based on the following critical observation. In previous constructions, for the extreme case of minimum download, the retrieval pattern is to download the message directly from N−1 servers; however this causes leakage to all these N−1 servers, and a better retrieval pattern for this extreme case is to download the message directly from a single server. The proposed code construction allows a natural transition to such a pattern, and for both the maximal leakage metric and the mutual information leakage metric, significant improvements can be obtained. We provide explicit solutions, in contrast to a previous work by Lin et al., where only numerical solutions were obtained.
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影响因子:
2.5
作者:
Zhusheng Wang;Karim A. Banawan;S. Ulukus
通讯作者:
Zhusheng Wang;Karim A. Banawan;S. Ulukus
影响因子:
2.5
作者:
Ruida Zhou;C. Tian;Hua Sun;Tie Liu
通讯作者:
Ruida Zhou;C. Tian;Hua Sun;Tie Liu
DOI:
10.1109/isit44484.2020.9174244
发表时间:
2019-10
期刊:
2020 IEEE International Symposium on Information Theory (ISIT)
影响因子:
--
作者:
C. Tian
通讯作者:
C. Tian
DOI:
--
发表时间:
2020
期刊:
IEEE Journal on Selected Areas in Information Theory
影响因子:
--
作者:
Hsuan;Siddhartha Kumar;E. Rosnes;A. Graell i Amat;Eitan Yaakobi
通讯作者:
Eitan Yaakobi
DOI:
--
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