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Resilient privacy protection for location-based services through decentralization

Jin, Hongyu (author)
KTH,Kommunikationssystem, CoS,KTH Royal Institute of Technology, Sweden
Papadimitratos, Panos (author)
RISE,SICS,KTH Royal Institute of Technology, Sweden
Papadimitratos, Panagiotis (author)
KTH,Kommunikationssystem, CoS,RISE SICS, Stockholm, Sweden
 (creator_code:org_t)
2019-09-25
2019
English.
In: ACM Transactions on Privacy and Security. - : Association for Computing Machinery. - 2471-2566 .- 2471-2574. ; 22:4
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Location-Based Services (LBSs) provide valuable services, with convenient features for mobile users. However, the location and other information disclosed through each query to the LBS erodes user privacy. This is a concern especially because LBS providers can be honest-but-curious, collecting queries and tracking users' whereabouts and infer sensitive user data. This motivated both centralized and decentralized location privacy protection schemes for LBSs: anonymizing and obfuscating LBS queries to not disclose exact information, while still getting useful responses. Decentralized schemes overcome disadvantages of centralized schemes, eliminating anonymizers, and enhancing users' control over sensitive information. However, an insecure decentralized system could create serious risks beyond private information leakage. More so, attacking an improperly designed decentralized LBS privacy protection scheme could be an effective and low-cost step to breach user privacy. We address exactly this problem, by proposing security enhancements for mobile data sharing systems. We protect user privacy while preserving accountability of user activities, leveraging pseudonymous authentication with mainstream cryptography. We show our scheme can be deployed with off-the-shelf devices based on an experimental evaluation of an implementation in a static automotive testbed. 

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik -- Kommunikationssystem (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering -- Communication Systems (hsv//eng)

Keyword

Honest-but-curious
Location privacy
Pseudonymous authentication
Authentication
Location
Telecommunication services
Decentralized system
Experimental evaluation
Location privacy protection
Off-the-shelf devices
Security enhancements
Sensitive informations
Location based services

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ref (subject category)
art (subject category)

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