Anonymity in Location-Based Services: Towards a General Framework
Anonymity in Location-Based Services: Towards a General Framework
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DOI：
10.1109/mdm.2007.19
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发表时间：
2007-05
期刊：
影响因子：
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通讯作者：
C. Bettini;S. Mascetti;X. Wang;S. Jajodia
中科院分区：
文献类型：
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作者：
C. Bettini;S. Mascetti;X. Wang;S. Jajodia
一个普遍的共识是，位置感知设备的扩散将导致基于位置的服务的扩散。隐私保护是一个具有挑战性的研究问题，这种服务。一种可能的解决方案包括确保用户的匿名性，即，确保发出请求的用户在一组用户中无法被任何有权访问服务请求的攻击者区分。在本文中，我们提出了一个正式的框架来建模的问题，保证匿名时，需要基于位置的服务。所提出的框架扩展了现有的方法，允许建模不同种类的知识，可能提供给攻击者。我们展示了我们的框架的应用示例，对已知场景和新场景进行建模。从实践的角度来看，该框架使得有可能定义匿名保护技术，最适合系统的假设，从应用上下文，和用户定义的隐私保护水平。
A general consensus is that the proliferation of location- aware devices will result in a diffusion of location-based services. Privacy preservation is a challenging research issue for this kind of service. A possible solution consists of ensuring users' anonymity, i.e., ensuring that the user issuing a request is indistinguishable, among a group of users, by any attacker who has access to the service requests. In this paper we propose a formal framework to model the problem of guaranteeing anonymity when requiring location-based services. The proposed framework extends existing approaches by allowing to model different kinds of knowledge that may be available to the attacker. We show application examples of our framework, modeling both known scenarios and new ones. From a practical point of view, the framework makes it possible to define anonymity-preserving techniques that best suite the system assumptions as derived from the applicative context, and the level of privacy protection defined by the user.