分布式中继网络中的物理层攻击检测技术研究

项目名称： 分布式中继网络中的物理层攻击检测技术研究

项目编号： No.61501046

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 无线电电子学、电信技术

项目作者： 曹若菡

作者单位： 北京邮电大学

项目金额： 21万元

中文摘要： 中继技术已经广泛应用在现代通信系统当中，该项技术在提高网络覆盖率与可靠性方面发挥了巨大作用。中继节点的普遍引入也给信息传输带来了一些安全隐患，即信息的接力转发给一些不可靠中继节点提供了篡改所转发信息的机会。这种中继实施的篡改行为被称为替换攻击。本项目拟面向分布式中继网络中的替换攻击检测问题，旨在提出通过物理层实施攻击检测的技术方案，从而不需要依靠先验传播的秘钥以提高系统的通信效率。具体而言，针对不同结构的中继网络，项目首先考虑离散无记忆信道下的物理层攻击检测问题，继而探索对攻击行为鲁棒的信道编码技术，最后考虑将所提方案拓展应用到无线系统当中。本项目的主要目的是形成完整的物理层攻击检测理论方法，为构建高效安全的通信系统提供基础。

中文关键词： 物理层安全；安全通信；中继网络；协作通信

英文摘要： Relay nodes are widely employed in modern communication networks to help enhancing coverage and connectivity of the networks. This strong dependence on the relaying infrastructure may increase the risk on security as malicious relays may forward false information in order to fool the intended participants. These attacks, referred to as substitution attacks, impose major ramification on the design of network protocols. In this project, we consider the attack detection problem in distributed relay networks. The focus is on how to implement attack detection in the physical layer without using pre-shared secret or secret transmission. Particularly, for varying distributed relay networks made up of discrete memoryless channels, the substitution attack detection approaches are first discussed respectively. Afterwards, we consider to design the encoded schemes which intend to correct the error caused by substitution attacks, such that the destination could get message against malicious relays. Finally, these techniques are extended to wireless scenarios. The main objective of this project is to form an integrated attacks detection technique for the distributed relay networks, which is essential to build an efficient and security communication system.

英文关键词： physical-layer security;secure communication;relay networks ;cooperative communication