多媒体交互网络用户私密信息智能隐藏仿真  

User Privacy Information Hiding Method Simulation of Multimedia Interactive Network User

作　　者：陈治伯[1] 王莉[1] CHEN Zhi-bo;WANG Li(School of Computer Engineering,Shangqiu University,Shangqiu Henan 476000,China)

机构地区：[1]商丘学院计算机工程学院,河南商丘476000

出　　处：《计算机仿真》2019年第3期212-215,293,共5页Computer Simulation

摘　　要：针对当前方法无法兼顾多媒体交互网络用户私密信息隐藏有效性以及在提供用户私密信息隐藏和查询服务质量方面的高效性的问题,提出一种基于PR-四叉树的用户私密信息智能隐藏方法,利用信息熵、条件熵和互信息测量多媒体交互网络用户隐私偏好,得到用户私密信息访问者属性-群组之间的相关性。在了解用户隐私偏好基础上,采用PR-四叉树时空隐匿算法,设置一个用户私密信息队列和一个双向映射表,网络匿名服务器需要抽取出访问者的坐标位置,并判断其是否在用户私密信息敏感区域,如果是,则认为访问者所在区域是否大于最小隐藏区域,如果访问区域小于用户敏感区域,服务器将采用敏感区域代替设置的最小隐藏区域,并进行适当扩展,即可得到用户私密信息智能隐藏约束区域,实现所有用户私密信息的智能隐藏。仿真测试结果显示,所提方法不仅在用户私密信息智能隐藏方面具有较好的性能,而且在提供用户私密信息隐藏和查询服务质量方面具有高效性。This article puts forward a method for intelligently hiding user private information based on PR-quadtree.At first,information entropy,conditional entropy and mutual information were used to measure user privacy preferences in multimedia interactive network and thus to obtain the correlation between visitor attribute of privacy information and group.Based on user privacy preferences,PR-quadtree space-time privacy algorithm was adopted and a user private information queue and a bidirectional mapping table were set.The network anonymous server extracted the coordinate position of visitor and determined whether it was in the sensitive area of user privacy information.If yes,the server judged whether the visitor area was greater than the minimum hidden area.If the access area was smaller than the user sensitive area,the server used the sensitive area to replace the set minimum hidden area,and then expanded it.Finally,the intelligent hidden constrained area of private information for users could be obtained.Thus,all the intelligent hiding of user private information was achieved.Simulation results show that the proposed method not only has better performance in intelligently hiding user privacy information,but also has higher efficiency in providing user privacy information hiding and querying service quality.

关 键 词：多媒体 交互网络 用户私密信息 智能隐藏 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]