Multiuser private queries over encrypted databases
by Yanjiang Yang, Feng Bao, Xuhua Ding, Robert H. Deng
International Journal of Applied Cryptography (IJACT), Vol. 1, No. 4, 2009

Abstract: Searchable encryption schemes allow users to perform keyword-based searches on an encrypted database. Almost all existing such schemes only consider the scenario where a single user acts as both the data owner and the querier. However, most databases in practice do not just serve one user; instead, they support search and write operations by multiple users. In this paper, we systematically study searchable encryption in a practical multiuser setting. Our results include a set of security notions for multiuser searchable encryption as well as a construction which is provably secure under the newly introduced security notions. We also discuss how to improve query efficiency.

Online publication date: Mon, 31-Aug-2009

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