Using secret sharing for searching in encrypted data

Richard Brinkman, Jeroen Doumen, Willem Jonker

Research output: Book/ReportReportOther research output

23 Citations (Scopus)
119 Downloads (Pure)

Abstract

When outsourcing data to an untrusted database server, the data should be encrypted. When using thin clients or low-bandwidth networks it is best to perform most of the work at the server. In this paper we present a method, inspired by secure multi-party computation, to search efficiently in encrypted data. XML elements are translated to polynomials. A polynomial is split into two parts: a random polynomial for the client and the difference between the original polynomial and the client polynomial for the server. Since the client polynomials are generated by a random sequence generator only the seed has to be stored on the client. In a combined effort of both the server and the client a query can be evaluated without traversing the whole tree and without the server learning anything about the data or the query.
Original languageEnglish
Place of PublicationEnschede
PublisherCentre for Telematics and Information Technology (CTIT)
Number of pages11
Publication statusPublished - Aug 2004

Publication series

NameCTIT technical report series
PublisherUniversity of Twente, Centre for Telematics and Information Technology (CTIT)
No.TR-CTIT-04-35

Keywords

  • SCS-Cybersecurity

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