SWiM: Secure Wildcard Pattern Matching from OT Extension

Vladimir Kolesnikov, Mike Rosulek, Ni Trieu

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

Abstract

Suppose a server holds a long text string and a receiver holds a short pattern string. Secure pattern matching allows the receiver to learn the locations in the long text where the pattern appears, while leaking nothing else to either party besides the length of their inputs. In this work we consider secure wildcard pattern matching (WPM), where the receiver’s pattern is allowed to contain wildcards that match to any character. We present SWiM, a simple and fast protocol for WPM that is heavily based on oblivious transfer (OT) extension. As such, the protocol requires only a small constant number of public-key operations and otherwise uses only very fast symmetric-key primitives. SWiM is secure against semi-honest adversaries. We implemented a prototype of our protocol to demonstrate its practicality. We can perform WPM on a DNA text (4-character alphabet) of length $$10^5$$ and pattern of length $$10^3$$ in just over 2 s, which is over two orders of magnitude faster than the state-of-the-art scheme of Baron et al. (SCN 2012).

Original languageEnglish (US)
Title of host publicationFinancial Cryptography and Data Security - 22nd International Conference, FC 2018, Revised Selected Papers
EditorsSarah Meiklejohn, Kazue Sako
PublisherSpringer Verlag
Pages222-240
Number of pages19
ISBN (Print)9783662583869
DOIs
StatePublished - 2018
Externally publishedYes
Event22nd International Conference on Financial Cryptography and Data Security, 2018 - Nieuwpoort, Belgium
Duration: Feb 26 2018Mar 2 2018

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume10957 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference22nd International Conference on Financial Cryptography and Data Security, 2018
CountryBelgium
CityNieuwpoort
Period2/26/183/2/18

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)

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