VANETs中基于虚拟位置的位置隐私保护方案

VIRTUAL LOCATION-BASED LOCATION PRIVACY PROTECTION SCHEME IN VANETS

  • 摘要: 车载自组织网络(Vehicular Ad-Hoc Networks,VANETs)中,现有的基于K匿名、混合区和路径混淆的位置隐私保护方案均需依赖周围车辆间的协助,在车辆稀疏场景下无法有效保护用户的位置隐私。针对该问题,提出一种基于虚拟位置的隐私保护方案,设计了虚拟位置生成算法,结合K匿名技术实现虚拟位置对用户真实位置的混淆,降低攻击者获取用户真实位置的概率。实验结果表明,该方案在不同车辆密度场景中均能够为用户提供实时的、有效的位置隐私保护,同时能在更短时间内将跟踪成功率降低至1%以下。

     

    Abstract: In Vehicular Ad-Hoc Networks (VANETs), existing location privacy protection schemes based on K-anonymity, mix-zones and path obfuscation all rely on the assistance among surrounding vehicles, which cannot effectively protect users' location privacy in a sparse vehicle scenario. To address this problem, a virtual location-based privacy protection scheme is proposed, in which a virtual location generation algorithm is designed and combined with K-anonymity techniques to achieve the obfuscation of the virtual location to the user's real location and reduce the probability of an attacker obtaining the user's real location. The experimental results show that the scheme can provide real-time and effective location privacy protection for users in different vehicle density scenarios, while reducing the tracking success rate to less than 1% in a shorter period of time.

     

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