位置感知的自适应隐私保护策略

摘要

Aiming at the problems which any node can access sensitive data and privacy information of other nodes in LBS (locationbased services), when multiple nodes cooperate and calculate in the distributed environment of distrust. A architecture and implementation model of adaptive strategy for privacy protection is presented. It logically describes the privacy policy of locatien awareness in LaMOC system. By illustrating the policy, it is explained in details which kind of location information should be released and to whom and when it will be. The kind of information that can be released is specified and its key elements of situational dimensions, thus the problem of security and rapid transmission for dynamic accessing the object position is solved. An application case of prototype system validated the feasibility and effectiveness of this adaptive strategy for privacy protection.%针对LBS(基于位置的服务)中多个节点在一个互不信任的分布式环境下合作计算时,任何节点可能获取其他节点的隐私信息及敏感数据的情况,提出了一种新的自适应隐私保护策略体系架构和执行模型.用该策略具体说明对哪些位置信息应该什么时候公布给谁,指明什么信息能被公布,要公布的情境维度的关键要素等问题,以解决动态变化的隐私客体位置访问安全和信息传输的快速性问题.通过一个原型系统运行实例结果表明了该自适应隐私保护策略的可行性和有效性.