【摘要】 针对位置隐私保护问题,对基于位置的服务(LBS)的攻击及现有的保护方法进行了分析.提出了一种LBS位置隐私模型———群代理转发模型,其主要思想是切断终端用户身份信息与位置请求信息间的联系.为了进一步提高模型在实际应用中的成功率,在原有模型的基础上提出重叠群代理转发模型,从根本上阻止位置隐私的泄露.最后,对提出的模型进行了安全性分析.实验结果显示所提出的模型能以很高的概率适应实际应用的需求:当重合率为0,群规模下界为43时,可达到95.0%的平均成功率;重合率增大时,平均成功率有增大的趋势;当下界降低时,平均成功率也有明显的提高.更多还原

【Abstract】 Aimed at Location privacy protection,attacks on LBS location privacy and present protection models were analyzed fully.A new model of LBS location privacy is proposed,whose basic idea is to cut the relationship of terminal user′s ID information and location request information.In order to improve the effectiveness of original model,we propose an overlap group agent transfer model.Our object is stop location privacy losing from start.In the last of this paper,we made safety analysis of our model and future work introduction.Experimental results show that the proposed model can adapt to the practical application of a high probability of demand.when the coincidence rate is 0,and the group size lower bound was 43,the success rate was 95.0%.When the coincidence rate increases,the success rate was increased.When the current sector reduced,the growth of success rate improved significantly.更多还原