Endogenous security in the physical layer of wireless communications: key technologies, advantages and future challenges

The rapid development of wireless communications has put forward higher requirements for the design of security architectures for future communications. The broadcast and openness of wireless systems make information transmission vulnerable to security threats such as interception, eavesdropping and interference. Wireless endogenous security utilizes the intrinsic characteristics of the wireless channel and communication-related technologies to complement existing security mechanisms and improve transmission security. According to the development trend of wireless security, the key technologies of endogenous security in the physical layer of wireless communication were discussed. Research overviews of wireless key generation technology, wireless authentication technology, and wireless encrypted transmission technology were given. The wireless communication physical layer endogenous security advantages, i.e., uniqueness, compatibility, heterogeneity, and reproducibility, were analyzed. Explore how to realize the de-redundancy of the physical layer architecture and the reuse of physical layer functions. Future work on key technologies for endogenous security in the physical layer of wireless communications is outlined.