Privacy Preserving for Location-Based Services Using Location Transformation
With the increasing popularity of mobile communication de vices loaded with positioning capabilities (e.g.,GPS), there is growing de mand for enjoying location-based services (LBSs).An important problem in LBSs is the disclosure of a users real location while interacting with the location service provider (LSP).To address this issue, existing solu tions generally introduce a trusted Anonymizer between the users and the LSP.But the introduction of an Anonymizer actually transfers the security risks from the LSP to the Anonymizer.Once the Anonymizer is compromised, it may put the user information in jeopardy.In this paper, we propose an enhanced location privacy preserving (ELPP) scheme for the LBS environment.Our scheme employs an entity, termed Function Generator, to distribute the spatial transformation parameters periodi cally, with which the users and the LSP can performs the mutual trans formation between a real location and a pseudo location.Without the transforming parameters, the Anonymizer cannot have any knowledge about a users real location.The main merits of our scheme include (1) no fully trusted entities are required; (2) each user can obtain accurate POIs, while preserving location privacy.
location-based service location privacy K-anonymity
Tao Peng Qin Liu Guojun Wang
School of Information Science and Engineering Central South University Changsha,Hunan Province,P.R.China,410083
国际会议
The 5th International Symposium on Cyberspace Safety and Security ( CSS2013)(第五届国际网络空间安全和安保研讨会)
张家界
英文
14-28
2013-11-13（万方平台首次上网日期，不代表论文的发表时间）