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Searchable Symmetric Encryption Supporting Queries with Multiple-Character Wildcards

  • Fangming ZhaoEmail author
  • Takashi Nishide
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9955)

Abstract

We consider the problem of searchable encryption scheme which allows a user to search over encrypted data without decrypting it. Existing schemes in the symmetric setting only deal with equality search or a limited similarity keyword search. In this paper, we study Bloom filter-based searchable symmetric encryption schemes which make search on encrypted keywords more expressive and flexible, i.e., support fuzzy search or wildcard search by using multiple wildcard characters. Our schemes are more efficient than previous solutions on both computation cost and communication cost. Security of our main construction is analyzed based on a formal, strong security model for searchable symmetric encryption.

Keywords

Searchable encryption Bloom filter Wildcard 

Notes

Acknowledgments

This work was supported in part by JSPS KAKENHI Grant Number 26330151, JSPS A3 Foresight Program, and JSPS and DST under the Japan - India Science Cooperative Program.

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Copyright information

© Springer International Publishing AG 2016

Authors and Affiliations

  1. 1.TOSHIBA CorporationKawasakiJapan
  2. 2.University of TsukubaTsukubaJapan

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