Poor H Vincent, Schaefer Rafael F
Department of Electrical Engineering, Princeton University, Princeton, NJ 08544;
Information Theory and Applications Chair, Department of Electrical Engineering and Computer Science, Technische Universität Berlin, 10587 Berlin, Germany.
Proc Natl Acad Sci U S A. 2017 Jan 3;114(1):19-26. doi: 10.1073/pnas.1618130114. Epub 2016 Dec 27.
Security in wireless networks has traditionally been considered to be an issue to be addressed separately from the physical radio transmission aspects of wireless systems. However, with the emergence of new networking architectures that are not amenable to traditional methods of secure communication such as data encryption, there has been an increase in interest in the potential of the physical properties of the radio channel itself to provide communications security. Information theory provides a natural framework for the study of this issue, and there has been considerable recent research devoted to using this framework to develop a greater understanding of the fundamental ability of the so-called physical layer to provide security in wireless networks. Moreover, this approach is also suggestive in many cases of coding techniques that can approach fundamental limits in practice and of techniques for other security tasks such as authentication. This paper provides an overview of these developments.
传统上，无线网络安全一直被视为一个与无线系统的物理无线电传输方面分开处理的问题。然而，随着新的网络架构的出现，这些架构不适用于诸如数据加密等传统的安全通信方法，人们对无线信道本身的物理特性提供通信安全的潜力的兴趣与日俱增。信息论为研究这一问题提供了一个自然的框架，最近有大量研究致力于利用这个框架来加深对所谓物理层在无线网络中提供安全的基本能力的理解。此外，在许多情况下，这种方法还暗示了在实践中可以接近基本极限的编码技术以及用于其他安全任务（如认证）的技术。本文概述了这些进展。
