CT-ISG: Protecting Location Privacy in Location-Aware Computing: Architectures and Algorithms

位置感知计算不仅为基于位置的应用创造了许多新的机会，也为新的漏洞和重大的隐私风险打开了大门。位置隐私保护面临着两个独特的挑战。首先，位置隐私需要在服务提供商提供的服务质量和用户期望的位置隐私之间进行仔细的权衡；其次，位置隐私代表个人体验，并且是上下文敏感的。“一刀切”的解决方案不会扩大规模。该项目设计和开发了：1)安全和可定制的隐私感知位置服务体系结构，它提供了基于策略的位置隐私机制和基于位置匿名的隐私方案的精心组合；2)一套安全的位置信息发布、订阅、传输、使用和存储保障；以及3)一套隐私保护技术，用于降低位置信息未经授权泄露的风险，同时保持基于位置的应用的性能和服务质量。由此产生的能力预计将对需要位置隐私保护的广泛位置感知应用产生重大实际影响，从基于位置的工业监控，如智能交通跟踪，到基于位置的娱乐和国土安全。该项目的原型实施和实验研究被用作涵盖移动和先进互联网计算技术的课程的教学工具。该教育计划还包括通过实践研究、课程项目或关于位置隐私保护启用的信息传递和传播应用程序的特殊问题课程来培训学生。项目成果将通过以下网站发布：http://disl.cc.gatech.edu/LocationPrivacy/.

Location-aware computing not only creates many new opportunities for location-based applications, but also opens doors for new vulnerabilities and significant privacy risks. Location privacy protection confronts two unique challenges. First, location privacy requires a careful tradeoff between the quality of service provided by the service provider and the desired location privacy of the user; and second, location privacy represents personal experience and is context sensitive. The ``one size fits all'' solution will not scale. This project designs and develops: 1) a secure and customizable architecture for privacy-aware location-based services, which offers a careful combination of policy-based location privacy mechanisms and location anonymization based privacy schemes; 2) a set of safeguards for secure publication, subscription, transmission, use and storage of location information; and 3) a suite of privacy protection techniques for reducing the risks of unauthorized disclosure of location information, while maintaining the performance and service quality of location-based applications. The resulting capabilities are expected to have a significant practical impact on a broad range of location-aware applications that demand location privacy protection, from location-based industrial monitoring, such as intelligent transportation tracking, to location-based entertainment and homeland security. The prototype implementation and experimental research of this project are used as a teaching tool for courses covering mobile and advanced Internet computing technology. The educational program also includes training students through hand-on research, course projects or special problem courses on location-privacy protection enabled information delivery and dissemination applications. The project results will be disseminated via the following Web site http://disl.cc.gatech.edu/LocationPrivacy/.