CIF: Small: Foundations for Intrinsically Secure Networks: the Role of Network Interference

CIF：小型：本质安全网络的基础：网络干扰的作用

• 批准号: 1116501
• 负责人: Moe Win
• 金额: $ 48.31万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-01 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1116501&HistoricalAwards=false
• 关键词: CIF; Small; Foundations; Intrinsically; Secure

The ability to transfer information securely, to guarantee privacy, and to authenticate users in wireless networks forms the basis for confidentiality and economic advantage in today's information society. Contemporary wireless security systems evolved from schemes developed for traditional wireline applications, ignoring the special features of radio propagation channels. Meanwhile, the secrecy of wireless networks can be strengthened by exploiting the physical properties of these radio channels. Current research activities in this direction have largely ignored radio interference that can affect the secrecy of communication in a fundamental way. Therefore, it is crucial to characterize the various effects of interference (conventionally considered deleterious for communications) on network secrecy, as well as to develop techniques that exploit intrinsic properties of interference and radio channels for improving network secrecy.This research establishes foundations for the intrinsically secure exchange of information within wireless communities formed by spatially distributed legitimate users, interferers, and eavesdroppers. Principles and concepts from multiple disciplines such as communication theory, information theory, statistical inference, probability theory, stochastic geometry, and graph theory are employed to characterize the role of interference on network secrecy. In particular, this research (1) establishes a framework to determine the secrecy rate in large-scale wireless networks; (2) determines the properties of the iSI-graph, a random geometric graph that characterizes intrinsic secrecy in the presence of interference; (3) analyzes network secrecy in the presence of colluding eavesdroppers; and (4) evaluates the performance of secrecy enhancing techniques, including deliberate interference generation and sectorized transmission. This research provides a deeper understanding of the advantages and disadvantages of interference on network secrecy, paving the way to a more secure and safer information society.

在无线网络中安全传输信息、保证隐私和验证用户的能力构成了当今信息社会的机密性和经济优势的基础。当代无线安全系统是从为传统有线应用开发的方案发展而来的，忽略了无线电传播信道的特殊功能。同时，可以通过利用这些无线电信道的物理特性来加强无线网络的保密性。目前这个方向的研究活动在很大程度上忽略了无线电干扰，无线电干扰可能从根本上影响通信的保密性。因此，表征干扰（通常被认为对通信有害）对网络保密性的各种影响，以及开发利用干扰和无线电信道的固有特性来提高网络保密性的技术至关重要。这项研究为本质上的保密性奠定了基础。在由空间分布的合法用户、干扰者和窃听者形成的无线社区内安全地交换信息。采用通信理论、信息论、统计推断、概率论、随机几何和图论等多个学科的原理和概念来表征干扰对网络保密的作用。特别是，本研究（1）建立了一个确定大规模无线网络保密率的框架； (2) 确定 iSI 图的属性，这是一种随机几何图，其特征在于存在干扰时的内在保密性； (3) 分析存在共谋窃听者的网络保密性； (4) 评估保密增强技术的性能，包括故意干扰生成和扇区化传输。这项研究让我们更深入地了解干扰对网络保密的利弊，为建设更加安全的信息社会铺平道路。