CT-ISG: SPEAR: Space Encryption based Query Processing for Privacy-Aware Location-based Services

作为最近无线技术进步的结果，具有显著计算能力、千兆字节存储容量和无线通信能力的移动设备日益流行。此外，GPS等定位技术也被整合到越来越多的移动设备中。新兴的移动应用程序允许用户以无处不在的方式发布与位置相关的查询。人们认为，位置隐私保护是移动计算环境中重要的安全和隐私问题。例如，当移动用户向基于位置的服务(LBS)提供商发起一系列查询时，可以通过服务日志跟踪该用户-S的轨迹。虽然并不是所有的位置相关查询都是隐私敏感的，但在必要时为用户提供保护其位置隐私的选择变得越来越重要。该项目的技术目标是(1)开发空间加密和空间解密机制，(2)设计隐私保护的查询处理算法来回答基于加密搜索空间的空间查询，(3)开发一个复杂的SPAR系统架构来支持现实世界的应用。该项目还通过让学生接触安全和数据管理领域的数学和技术基础来促进教育。该项目的成功将带动另一波LBS使用量的增加，并有利于我国的经济。研究成果将通过会议、期刊和http://www.eng.auburn.edu/~weishinn/SPEAR.html网站上的出版物进行传播

As a result of recent wireless technology advances, mobile devices with significant computational abilities, gigabytes of storage capacities, and wireless communication capabilities have increasingly become popular. In addition, positioning techniques like GPS are incorporated into an increasing number of mobile devices. Emerging mobile applications allow users to issue location-dependent queries in a ubiquitous manner. It is believed that location privacy preservation represents important security and privacy problems in mobile computing environments. For instance, when a mobile user launches a series of queries to a location-based service (LBS) provider, that user?s trajectory can be tracked through the service logs. Although it is true that not all location-dependent queries are privacy-sensitive, it is of growing importance to offer users the choice of protecting their location privacy when it is necessary. The technical objectives of the project are to (1) develop space encryption and space decryption mechanisms, (2) design privacy-protected query processing algorithms to answer spatial queries based on encrypted search space, and (3) develop a sophisticated SPEAR system architecture for supporting real-world applications. This project also promotes education by exposing students to mathematical and technological underpinnings in the fields of security and data management. The success of this project will lead to another wave of increased usage for LBS and benefit the economy of our country. Research results will be disseminated through publications at conferences, journals, and the website at http://www.eng.auburn.edu/~weishinn/SPEAR.html