Due to the broadcast characteristic of the wireless medium, message impersonation and substitution attacks can possibly be launched by an adversary with low cost in wireless communication networks. As an ingenious solution, physical layer based message authentication can achieve perfect security by leveraging channel precoding techniques to meet high level security requirements. In this article, we focus on channel-precoding- based message authentication (CPC-based authentication) over a binary-input wiretap channel (BIWC). Specifically, message authentication with physical layer techniques is first reviewed. Then, a CPC-based authentication framework and its security requirements are presented. Based on the proposed framework, an authentication scheme with polar codes over a binary symmetric wiretap channel (BSWC) is developed. Moreover, a case study is provided as an example of message authentication with polar codes over BSWC. Finally, open research topics essential to CPC-based authentication are discussed.

中文翻译：

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无线网络中基于信道预编码的消息认证：挑战和解决方案


由于无线介质的广播特性，攻击者有可能在无线通信网络中以低成本发起消息冒充和替代攻击。作为一种巧妙的解决方案，基于物理层的消息认证可以利用信道预编码技术实现完美的安全性，以满足高级别的安全要求。在本文中，我们重点关注二进制输入窃听通道 (BIWC) 上基于通道预编码的消息身份验证（基于 CPC 的身份验证）。具体来说，首先回顾使用物理层技术的消息认证。然后提出了一种基于CPC的认证框架及其安全需求。基于所提出的框架，开发了一种通过二进制对称窃听通道（BSWC）使用极性码的认证方案。此外，还提供了一个案例研究作为通过 BSWC 使用极性码进行消息认证的示例。最后，讨论了基于 CPC 的身份验证所必需的开放研究主题。