Title

A new hardware-assisted PIR with O(n) shuffle cost

Publication Type

Journal Article

Publication Date

8-2010

Abstract

Since the concept of private information retrieval (PIR) was first formalized by Chor et al., various constructions have been proposed with a common goal of reducing communication complexity. Unfortunately, none of them is suitable for practical settings mainly due to the prohibitively high cost for either communications or computations. The booming of the Internet and its applications, especially, the recent trend in outsourcing databases, fuels the research on practical PIR schemes. In this paper, we propose a hardware-assisted PIR scheme with a novel shuffle algorithm. Our PIR construction entails O(n) offline computation cost, and constant online operations and O(log n) communication cost, where n is the database size.

Keywords

Information retrieval, Privacy, Trusted hardware

Discipline

Information Security

Research Areas

Information Security and Trust

Publication

International Journal of Information Security

Volume

9

Issue

4

First Page

237

Last Page

252

ISSN

1615-5262

Identifier

10.1007/s10207-010-0105-2

Publisher

Springer Verlag

Additional URL

http://dx.doi.org/10.1007/s10207-010-0105-2