Privacy-preserving equality test towards big data

Tushar Kanti Saha, Takeshi Koshiba

    研究成果: Conference contribution

    2 被引用数 (Scopus)

    抄録

    In this paper, we review the problem of private batch equality test (PriBET) that was proposed by Saha and Koshiba (3rd APWConCSE 2016). They described this problem to find the equality of an integer within a set of integers between two parties who do not want to reveal their information if they do not equal. For this purpose, they proposed the PriBET protocol along with a packing method using the binary encoding of data. Their protocol was secured by using ring-LWE based somewhat homomorphic encryption (SwHE) in the semi-honest model. But this protocol is not fast enough to address the big data problem in some practical applications. To solve this problem, we propose a base-N fixed length encoding based PriBET protocol using SwHE in the same semi-honest model. Here we did our experiments for finding the equalities of 8–64-bit integers. Furthermore, our experiments show that our protocol is able to evaluate more than one million (resp. 862 thousand) of equality comparisons per minute for 8-bit (resp. 16-bit) integers with an encoding size of base 256 (resp. 65536). Besides, our protocol works more than 8–20 in magnitude than that of Saha and Koshiba.

    本文言語English
    ホスト出版物のタイトルFoundations and Practice of Security - 10th International Symposium, FPS 2017, Revised Selected Papers
    出版社Springer-Verlag
    ページ95-110
    ページ数16
    ISBN(印刷版)9783319756493
    DOI
    出版ステータスPublished - 2018 1 1
    イベント10th International Symposium on Foundations and Practice of Security, FPS 2017 - Nancy, France
    継続期間: 2017 10 232017 10 25

    出版物シリーズ

    名前Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
    10723 LNCS
    ISSN(印刷版)0302-9743
    ISSN(電子版)1611-3349

    Other

    Other10th International Symposium on Foundations and Practice of Security, FPS 2017
    CountryFrance
    CityNancy
    Period17/10/2317/10/25

    ASJC Scopus subject areas

    • Theoretical Computer Science
    • Computer Science(all)

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