一种移动社交网络中的位置内容分享方法

Location content sharing method in mobile social networks

针对移动社交网络中位置内容分享多方用户的位置隐私问题,在访问控制层面,提出一种基于信任度的合作访问控制模型,采用了基于让步意愿的冲突消解方法处理多用户间的冲突,以兼顾隐私保护与分享程度二者之间的平衡。针对不可信好友恶意转发问题,提出了基于拒绝覆盖的控制方法,支持用户设置转发跳数和个性化控制分享范围。在LBS位置隐私保护层面,提出了一种基于贪心算法的虚假位置选择算法,使构造的虚假位置集合能够保证最大熵且构造的匿名区域最大,以抵御服务提供商获取用户的敏感位置问题。实验数据验证了该算法的可用性。

Aimed at the problem of multiple user location privacy in mobile social networks,a cooperative access control model based on trust is proposed at the level of access control. The conflict resolution method based on concession willingness is given among multiple users to achieve a balance between the privacy protection and the sharing degree. According to the problems of untrustworthy friends＇ malicious forwarding,a control method,called the ‘refuse to be covered＇is studied to support the user in setting the number of forwarding hops and controlling the range of sharing. In the case of LBS location privacy protection,a dummy location selection algorithm based on the greedy algorithm is proposed to prevent the service provider from obtaining the sensitive location of the user,in which the constructed dummy location set can guarantee the maximum entropy and the maximum cloaking region. Experimental results show that the algorithm is available.