An enhancement of privacy-preserving wildcards pattern matching

Tushar Kanti Saha*, Takeshi Koshiba

*この研究の対応する著者

研究成果: Conference contribution

11 被引用数 (Scopus)

抄録

We consider secure pattern matching for some alphabet set, where gaps are represented by the character ‘*’. Generally, we know that a wildcard character ‘*’ in the pattern is used to replace zero or more letters in the text. Yasuda et al. (ACISP 2014) proposed a new packing method for somewhat homomorphic encryption for handling wildcards pattern where the wildcards replace one letter in the text. We extend the secure pattern matching so that the wildcards are replaced with any sequences. We propose a method for privacy-preserving wildcards pattern matching using somewhat homomorphic encryption in the semi-honest model. At the same time, we also propose another packing method for executing homomorphic operations between plaintext and encrypted wildcards pattern in three homomorphic multiplications rather than 3k multiplications required by Yasuda et al. method to handle k sub-patterns. Moreover, we have been able to improve the communication complexity of Yasuda et al. method by a factor k denoting the total number of sub-patterns appearing in the pattern. In addition, our practical implementation shows that our method is about k-times faster than that of Yasuda et al. Here, we show some applications of our packing method to computing secure Hamming and Euclidean distances.

本文言語English
ホスト出版物のタイトルFoundations and Practice of Security - 9th International Symposium, FPS 2016, Revised Selected Papers
編集者Joaquin Garcia-Alfaro, Frederic Cuppens, Nora Cuppens-Boulahia, Lingyu Wang, Nadia Tawbi
出版社Springer Verlag
ページ145-160
ページ数16
ISBN(印刷版)9783319519654
DOI
出版ステータスPublished - 2017
外部発表はい
イベント9th International Symposium on Foundations and Practice of Security, FPS 2016 - Quebec, Canada
継続期間: 2016 10月 242016 10月 26

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)
10128 LNCS
ISSN(印刷版)0302-9743
ISSN(電子版)1611-3349

Other

Other9th International Symposium on Foundations and Practice of Security, FPS 2016
国/地域Canada
CityQuebec
Period16/10/2416/10/26

ASJC Scopus subject areas

  • 理論的コンピュータサイエンス
  • コンピュータ サイエンス(全般)

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