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Erschienen in:
2008 | OriginalPaper | Buchkapitel
Private Query on Encrypted Data in Multi-user Settings
verfasst von : Feng Bao, Robert H. Deng, Xuhua Ding, Yanjiang Yang
Erschienen in: Information Security Practice and Experience
Verlag: Springer Berlin Heidelberg
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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 multi-user setting. Our results include a set of security notions for multi-user searchable encryption as well as a construction which is provably secure under the newly introduced security notions.