Privacy enhancement in mobile data broadcasting environments

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

In mobile and wireless environments, clients will request for information by submitting queries to the server, which delivers the required data via point-to-point connection or broadcast channels. The broadcast paradigm possesses the advantage of scalability. However, the broadcast data is vulnerable to eavesdropping and the adversary may be able to associate the requested data items and hence the original query with a specific client, a form of privacy threat that we would like to protect against. In this paper, we propose to protect the privacy of queries generated by individual clients by allowing them to hide themselves behind other clients. We assume a possibly untrustworthy server and make use of a trustworthy anonymizer for the queries. At the query anonymizer, user queries are clustered and consolidated into subsuming queries, to obfuscate the queries from being recovered. The consolidated queries are then expanded to improve the obfuscation effect, making it harder for the adversary to deduce the original queries. We define various performance metrics on the query privacy, by studying the ability that the adversary could crack the client queries, and propose algorithms to obfuscate a collection of user queries.
Original languageEnglish
Title of host publicationProceedings of the 4th International Conference on Ubiquitous Information Management and Communication, ICUIMC 10
Pages37-41
Number of pages5
DOIs
Publication statusPublished - 1 Dec 2010
Event4th International Conference on Ubiquitous Information Management and Communication, ICUIMC'10 - Suwon, Korea, Republic of
Duration: 14 Jan 201015 Jan 2010

Conference

Conference4th International Conference on Ubiquitous Information Management and Communication, ICUIMC'10
Country/TerritoryKorea, Republic of
CitySuwon
Period14/01/1015/01/10

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Information Systems
  • Information Systems and Management

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