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A Step towards User Privacy while Using Location-Based Services

  • Abbas, Fizza (Department of Computer Science and Engineering, Hanyang University Erica Campus) ;
  • Oh, Heekuck (Department of Computer Science and Engineering, Hanyang University Erica Campus)
  • Received : 2013.10.04
  • Accepted : 2014.10.03
  • Published : 2014.12.31

Abstract

Nowadays mobile users are using a popular service called Location-Based Services (LBS). LBS is very helpful for a mobile user in finding various Point of Interests (POIs) in their vicinity. To get these services, users must provide their personal information, such as user identity or current location, which severely risks the location privacy of the user. Many researchers are developing schemes that enable a user to use these LBS services anonymously, but these approaches have some limitations (i.e., either the privacy prevention mechanism is weak or the cost of the solution is too much). As such, we are presenting a robust scheme for mobile users that allows them to use LBS anonymously. Our scheme involves a client side application that interacts with an untrusted LBS server to find the nearest POI for a service required by a user. The scheme is not only efficient in its approach, but is also very practical with respect to the computations that are done on a client's resource constrained device. With our scheme, not only can a client anonymously use LBS without any use of a trusted third party, but also a server's database is completely secure from the client. We performed experiments by developing and testing an Android-based client side smartphone application to support our argument.

Keywords

Acknowledgement

Supported by : National Research Foundation of Korea (NRF)

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