An Optimal Iterative Placement Algorithm for PIR from Heterogeneous Storage-Constrained Databases
An Optimal Iterative Placement Algorithm for PIR from Heterogeneous Storage-Constrained Databases
复制标题
异构存储受限数据库中 PIR 的最优迭代放置算法
DOI:
10.1109/globecom38437.2019.9013430
复制
发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Ji, Mingyue
中科院分区:
文献类型:
--
作者:
Woolsey, Nicholas;Chen, Rong-Rong;Ji, Mingyue
We propose a capacity-achieving scheme for private information retrieval (PIR) from databases (DBs) with heterogeneous storage constraints. In the PIR setting, a user queries a set of DBs to privately download a message, where privacy implies that no one DB can infer which message the user desires. Our PIR scheme uses an uncoded storage placement and we derive sufficient conditions to meet capacity in this design architecture. We translate the storage placement design to a "filling problem" where messages are partitioned into sub- messages and stored at subsets of DBs. We prove a set of necessary and sufficient conditions for the existence of the filling problem solution and design an iterative algorithm to find a filling problem solution. Our proposed algorithm requires at most a number of iterations equal to the number of DBs. Furthermore, we significantly reduce the number of sub-messages compared to the state-of- the-art PIR scheme, as our proposed PIR scheme requires that each message is split into a polynomial number of sub-messages with respect to the number of DBs.
影响因子:
2.5
作者:
M. Attia;Deepak Kumar;R. Tandon
通讯作者:
M. Attia;Deepak Kumar;R. Tandon
DOI:
10.1109/isit.2019.8849652
发表时间:
2019
期刊:
2019 IEEE International Symposium on Information Theory (ISIT)
影响因子:
--
作者:
Karim A. Banawan;Batuhan Arasli;Yi;S. Ulukus
通讯作者:
S. Ulukus
DOI:
10.1109/icc.2018.8422198
发表时间:
2018-05
期刊:
2018 IEEE International Conference on Communications (ICC)
影响因子:
--
作者:
R. Tandon;Maryam Abdul-Wahid;Firas Almoualem;Deepak Kumar
通讯作者:
R. Tandon;Maryam Abdul-Wahid;Firas Almoualem;Deepak Kumar