Private comparison protocol and its application to range queries

Tushar Kanti Saha, Mayank, Deevashwer, Takeshi Koshiba

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

We consider the problem of private comparison protocol and its application to private range queries for accessing a private database. Very recently, Saha and Koshiba (NBiS 2017) proposed an efficient privacy-preserving comparison protocol using ring-LWE based somewhat homomorphic encryption (SwHE) in the semi-honest model. The protocol took 124 ms (resp., 125 ms) for comparing two 16-bit (resp., 32-bit) integers. But this protocol is not efficient enough to process range queries to a large database where several thousand comparisons are required. In this paper, we propose an efficient parity-based private comparison protocol and show its application to private range queries with a modified packing method. Here the security of the protocol is also ensured by ring-LWE based SwHE in the same semi-honest model. Our practical experiments show that our comparison protocol enables us to do a single comparison in 84 ms (resp., 85 ms) for 16-bit (resp., 32-bit) integers which is more efficient than Saha et al.’s protocol. Besides, it takes about 0.499 s (resp., 2.247 s) to process a 3-out-of-11 range query in a database of 100 records (resp., 1000 records) including 11 attributes, which outperform state of the art.

Original languageEnglish
Title of host publicationInternet and Distributed Computing Systems - 10th International Conference, IDCS 2017, Proceedings
EditorsGiuseppe Di Fatta, Antonio Guerrieri, Mukaddim Pathan, Giancarlo Fortino, A. B. Ali
PublisherSpringer Verlag
Pages128-141
Number of pages14
ISBN (Print)9783319977942
DOIs
Publication statusPublished - 2018
Event10th International Conference on Internet and Distributed Computing Systems, IDCS 2017 - Mana Island, Fiji
Duration: 2017 Dec 112017 Dec 13

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume10794 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Other

Other10th International Conference on Internet and Distributed Computing Systems, IDCS 2017
CountryFiji
CityMana Island
Period17/12/1117/12/13

Keywords

  • Batch technique
  • Comparison protocol
  • Range query
  • Somewhat homomorphic encryption

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)

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  • Cite this

    Saha, T. K., Mayank, Deevashwer, & Koshiba, T. (2018). Private comparison protocol and its application to range queries. In G. Di Fatta, A. Guerrieri, M. Pathan, G. Fortino, & A. B. Ali (Eds.), Internet and Distributed Computing Systems - 10th International Conference, IDCS 2017, Proceedings (pp. 128-141). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 10794 LNCS). Springer Verlag. https://doi.org/10.1007/978-3-319-97795-9_12