CT-ISG: Enabling Location Privacy; Moving beyond k-anonymity, cloaking and anonymizers

CT-ISG：启用位置隐私；

• 批准号: 0831505
• 负责人: Cyrus Shahabi
• 金额: $ 38.67万
• 依托单位: University of Southern California
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-09-01 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0831505&HistoricalAwards=false
• 关键词: CT; ISG; Enabling; Location; Privacy

Location-based services are becoming an important part of our everyday lives. According to the Pew Internet & American Life Project survey, 47% of current cell-phone users prefer to have mapping features on their phones. Similar trends can be shown for other portable devices such as car navigation systems, PDA's and computer laptops. However, recent concerns over how such services can jeopardize a user's private information resulted in the newly coined term "location privacy." Several breaches of subscriber's privacy by stalking their locations have been reported. This project is going beyond the conventional approaches proposed for location privacy by devising novel frameworks to eliminate the need for a trusted intermediary (acting as an anonymizer) in location-based services and that satisfy significantly more stringent privacy guarantees as compared to the anonymity-based approaches. The first approach is inspired by the work in the area of encryption and the second approach builds upon the framework of private information retrieval. Both of these research fields have been around for a long time enabling privacy protection but not yet fully exploited for location privacy. The broader impact of this study is to enable many users with privacy concerns to utilize customized location services in their mobile devices without compromising their location privacy. This in turn would increase the customer base for many industries and government agencies in the areas of geospatial information systems, online maps, car navigation systems, Location Based Services, and military and intelligence operations. Results will be disseminated through papers published in relevant conferences and journals; open-source code will be disseminated through the web: http://infolab.usc.edu/projects/LocationPrivacy/.

基于位置的服务正在成为我们日常生活中重要的一部分。根据皮尤互联网和美国生活项目的调查，47%的手机用户更喜欢在手机上安装地图功能。汽车导航系统、掌上电脑和笔记本电脑等其他便携设备也呈现出类似的趋势。然而，最近对这类服务如何危及用户私人信息的担忧导致了新创造的术语“位置隐私”。据报道，有几起通过跟踪订户的位置来侵犯订户隐私的事件。该项目正在超越传统的位置隐私方法，通过设计新的框架来消除在基于位置的服务中对可信中介(充当匿名者)的需求，并且与基于匿名的方法相比，满足明显更严格的隐私保证。第一种方法受到加密领域工作的启发，第二种方法建立在私人信息检索框架的基础上。这两个研究领域都已经存在了很长时间，能够实现隐私保护，但还没有完全利用位置隐私。这项研究的更广泛影响是使许多有隐私问题的用户能够在移动设备中使用定制的位置服务，而不会损害他们的位置隐私。这反过来将增加许多行业和政府机构在地理空间信息系统、在线地图、汽车导航系统、基于位置的服务以及军事和情报行动领域的客户基础。结果将通过在相关会议和期刊上发表的论文进行传播；开放源码将通过以下网站传播：http://infolab.usc.edu/projects/LocationPrivacy/.