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介绍了无线网络中一个基于对称加密算法的物理层辅助消息认证机制,在此基础上提出了一个基于广播信道的新型消息认证机制。提出的机制通过利用物理层信道响应的时间和空间的独立性将传统的消息认证机制和物理层认证机制相结合,达到快速认证的目标而且传输负载最小。并与公钥基础的物理层辅助认证机制和传统的上层认证机制进行了比较,也进行了扩展分析和仿真测试,验证了所提出认证机制的性能。
This paper introduces a physical layer authentication mechanism based on symmetric encryption algorithm in wireless networks, and proposes a new message authentication mechanism based on broadcast channel. The proposed mechanism combines the traditional message authentication mechanism with the physical layer authentication mechanism by taking advantage of the time and space independence of the physical layer channel response to achieve fast authentication and minimum transmission load. Compared with the public key authentication mechanism of the physical layer and the traditional upper layer authentication mechanism, this paper also carried out the extended analysis and simulation tests to verify the performance of the proposed authentication mechanism.