Distributed Searchable Symmetric Encryption

C. T. Bösch, A. Peter, Bram Leenders, H. W. Lim, Q. Tang, Huaxiong Wang, Pieter Hartel, Willem Jonker

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

17 Citations (Scopus)

Abstract

Searchable Symmetric Encryption (SSE) allows a client to store encrypted data on a storage provider in such a way, that the client is able to search and retrieve the data selectively without the storage provider learning the contents of the data or the words being searched for. Practical SSE schemes usually leak (sensitive) information during or after a query (e.g., the search pattern). Secure schemes on the other hand are not practical, namely they are neither efficient in the computational search complexity, nor scalable with large data sets. To achieve efficiency and security at the same time, we introduce the concept of distributed SSE (DSSE), which uses a query proxy in addition to the storage provider. We give a construction that combines an inverted index approach (for efficiency) with scrambling functions used in private information retrieval (PIR) (for security). The proposed scheme, which is entirely based on XOR operations and pseudo-random functions, is efficient and does not leak the search pattern. For instance, a secure search in an index over one million documents and 500 keywords is executed in less than 1 second.
Original languageEnglish
Title of host publicationTwelfth Annual International Conference on Privacy, Security and Trust, PST 2014, Toronto, Canada
Place of PublicationUSA
PublisherIEEE
Pages330-337
Number of pages8
DOIs
Publication statusPublished - 1 Jul 2014
Externally publishedYes

Keywords

  • Searchable Encryption, Search Pattern Hiding, Practical Efficiency, Semi-Honest Model

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  • Cite this

    Bösch, C. T., Peter, A., Leenders, B., Lim, H. W., Tang, Q., Wang, H., Hartel, P., & Jonker, W. (2014). Distributed Searchable Symmetric Encryption. In Twelfth Annual International Conference on Privacy, Security and Trust, PST 2014, Toronto, Canada (pp. 330-337). IEEE. https://doi.org/10.1109/PST.2014.6890956