Safeguarding Location Privacy in Wireless Ad-Hoc Networks

Hashem, Tanzima; Kulik, Lars

doi:10.1007/978-3-540-74853-3_22

Cited by 61 publications

(41 citation statements)

References 14 publications

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“…In the first phase, each user U i registers with the coordinator and gets a query ID (the coordinator is selected randomly before the protocol starts). Then, each U i blurs her exact location l i based on her neighbors' imprecise location [12] and submits her cloaked location R i to the LBS. The coordinator sends a description of the query to the LBS.…”

Section: Related Workmentioning

confidence: 99%

“…It is important to note that in the first phase of Hashem et al's protocol [7], each user blurs her exact location based on her peers' imprecise locations [12]. To achieve this, each user sends a request to her peers and receives their imprecise locations; she then computes her cloaked region as the MBR that includes her exact location and her peers' imprecise locations.…”

Section: Comparisonmentioning

confidence: 99%

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GLP: A cryptographic approach for group location privacy

Ashouri-Talouki

Baraani-Dastjerdi

Selçuk

2012

Computer Communications

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a b s t r a c tRecently, location privacy during the use of location-based services (LBSs) has raised considerable concerns. There is a wide literature on location privacy from the individual point of view; however, there exist only a few works to support location privacy for a group of users. In this paper, we consider location privacy issues for a group of users who may ask an LBS for a meeting place that minimizes their aggregate distance. The proposed solution, which we call the Group Location Privacy (GLP) protocol, is based on the Anonymous Veto network (AV-net) and homomorphic encryption. It preserves the location privacy of all users even in the case of collusion. Our solution also tries to minimize the LBS overhead for nearest neighbor (NN) queries and communication, i.e., to decrease the number of NN queries sent to an LBS and the number of points of interest (POIs) it returns. Furthermore, GLP greatly decreases the bandwidth usage to a high extent and protects the LBS provider from excessive disclosure of POIs. We discuss the performance and security analysis of the GLP protocol and show that the proposed protocol is secure against partial collusion in a malicious model.

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Section: Related Workmentioning

confidence: 99%

Section: Comparisonmentioning

confidence: 99%

GLP: A cryptographic approach for group location privacy

Ashouri-Talouki

Baraani-Dastjerdi

Selçuk

2012

Computer Communications

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“…To achieve this, the accuracy of the disclosed location is reduced so that a user is indistinguishable from at least k − 1 other users. In [11], k-anonymity is achieved by an ad-hoc network formed by the user and surrounding neighbours, while [12] shows how to achieve k-anonymity in a distributed environment where there are multiple non-colluding servers. Anonymisation has a fundamental difference with location sharing.…”

Section: Related Workmentioning

confidence: 99%

Longitude: A Privacy-Preserving Location Sharing Protocol for Mobile Applications

Dong

Dulay

2011

Trust Management V

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This version is available at https://strathprints.strath.ac.uk/33983/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Abstract. Location sharing services are becoming increasingly popular. Although many location sharing services allow users to set up privacy policies to control who can access their location, the use made by service providers remains a source of concern. Ideally, location sharing providers and middleware should not be able to access users' location data without their consent. In this paper, we propose a new location sharing protocol called Longitude that eases privacy concerns by making it possible to share a user's location data blindly and allowing the user to control who can access her location, when and to what degree of precision. The underlying cryptographic algorithms are designed for GPS-enabled mobile phones. We describe and evaluate our implementation for the Nexus One Android mobile phone.

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“…This way, the service provider can learn the area in which the person is, but not where exactly. Cloaking has been used extensively for providing location privacy [2,5,7,9,16]. …”

Section: Input Attacksmentioning

confidence: 99%

“…A popular approach is location cloaking [2,5,7,9,16], where only coarse-grained, less intrusive location information is given to a location-based service. Other work [1,18] has suggested the usage of pseudonyms to keep a person's identity hidden from a service.…”

Section: Related Workmentioning

confidence: 99%

Location privacy based on trusted computing and secure logging

Hengartner

2008

Proceedings of the 4th International Conference on Security and Privacy in Communication Netowrks

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Many operators of cellphone networks now offer locationbased services to their customers, whereby an operator often outsources service provisioning to a third-party provider. Since a person's location could reveal sensitive information about the person, the operator must ensure that the service provider processes location information about the operator's customers in a privacy-preserving way. So far, this assurance has been based on a legal contract between the operator and the provider. However, there has been no technical mechanism that lets the operator verify whether the provider adheres to the privacy policy outlined in the contract. We propose an architecture for location-based services based on Trusted Computing and Secure Logging that provides such a technical mechanism. Trusted Computing lets an operator query the configuration of a location-based service. The operator will hand over location information to the service only if the service is configured such that the service provider cannot get access to location information using software-based attacks. This includes passive attacks, where the provider monitors information flowing into and out of its service, and active attacks, where the provider modifies or injects customer queries to the service. We introduce several requirements that must be satisfied by a location-based service to defend against passive attacks. Furthermore, we present Secure Logging, an auditing mechanism to defend against active attacks.

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Safeguarding Location Privacy in Wireless Ad-Hoc Networks

Cited by 61 publications

References 14 publications

GLP: A cryptographic approach for group location privacy

GLP: A cryptographic approach for group location privacy

Longitude: A Privacy-Preserving Location Sharing Protocol for Mobile Applications

Location privacy based on trusted computing and secure logging

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