NDLI: A Novel Time-Obfuscated Algorithm for Trajectory Privacy Protection

Please wait, while we are loading the content...

A Novel Time-Obfuscated Algorithm for Trajectory Privacy Protection

Content Provider	IEEE Xplore Digital Library
Author	Ren-Hung Hwang Yu-Ling Hsueh Hao-Wei Chung
Copyright Year	2008
Abstract	Location-based services (LBS) which bring so much convenience to our daily life have been intensively studied over the years. Generally, an LBS query processing can be categorized into snapshot and continuous queries which access user location information and return search results to the users. An LBS has full control of the location information, causing user privacy concerns. If an LBS provider has a malicious intention to breach the user privacy by tracking the users' routes to their destinations, it incurs a serious threat. Most existing techniques have addressed privacy protection mainly for snapshot queries. However, providing privacy protection for continuous queries is of importance, since a malicious LBS can easily obtain complete user privacy information by observing a sequence of successive query requests. In this paper, we propose a comprehensive trajectory privacy technique and combine ambient conditions to cloak location information based on the user privacy profile to avoid a malicious LBS reconstructing a user trajectory. We first propose an r-anonymity mechanism which preprocesses a set of similar trajectories R to blur the actual trajectory of a service user. We then combine k-anonymity with s road segments to protect the user's privacy. We introduce a novel time-obfuscated technique which breaks the sequence of the query issuing time for a service user to confuse the LBS so it does not know the user trajectory, by sending a query randomly from a set of locations residing at the different trajectories in R. Despite the randomness incurred from the obfuscation process for providing strong trajectory privacy protection, the experimental results show that our trajectory privacy technique maintains the correctness of the query results at a competitive computational cost.
Sponsorship	IEEE Computer Society
Starting Page	126
Ending Page	139
Page Count	14
File Size	825752
File Format	PDF
ISSN	19391374
Volume Number	7
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Trajectory Privacy Servers Databases Roads Correlation Cryptography security and privacy Computer society
Content Type	Text
Resource Type	Article
Subject	Information Systems and Management Computer Networks and Communications Computer Science Applications Hardware and Architecture

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Automatic (Re)Configuration of IT Systems for Dependability

Policy-based IPsec management

A Privacy Preserving Repository for Data Integration across Data Sharing Services

A Model-Based Validated Autonomic Approach to Self-Protect Computing Systems

Bridging Security and Fault Management within Distributed Workflow Management Systems

Participatory privacy: Enabling privacy in participatory sensing

An Analysis of RFID Authentication Schemes for Internet of Things in Healthcare Environment Using Elliptic Curve Cryptography

The Tiled Bitmap Forensic Analysis Algorithm

Query Access Assurance in Outsourced Databases

A Novel Time-Obfuscated Algorithm for Trajectory Privacy Protection

Similar Documents

Automatic (Re)Configuration of IT Systems for Dependability

Policy-based IPsec management

A Privacy Preserving Repository for Data Integration across Data Sharing Services

A Model-Based Validated Autonomic Approach to Self-Protect Computing Systems

Bridging Security and Fault Management within Distributed Workflow Management Systems

Participatory privacy: Enabling privacy in participatory sensing

An Analysis of RFID Authentication Schemes for Internet of Things in Healthcare Environment Using Elliptic Curve Cryptography

The Tiled Bitmap Forensic Analysis Algorithm

Query Access Assurance in Outsourced Databases

A Novel Time-Obfuscated Algorithm for Trajectory Privacy Protection