Achieving Covertness and Secrecy: A New Paradigm for Secure Wireless Communication
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This paper explores a novel secure wireless communication paradigm where the physical layer security technology is applied to counteract both detection and eavesdropping attacks, such that the critical covertness and secrecy properties of the communication are jointly guaranteed. To understand the fundamental security performance under this paradigm, we first define a new metric-covert secrecy rate (CSR) to represent the maximum transmission rate subject to the constraints of both covertness and secrecy, and then provide theoretical modeling for covertness outage probability and secrecy outage probability to depict the covertness and secrecy performances of the paradigm. We further conduct detailed theoretical analysis to identify the CSR under various scenarios characterized by the detector-eavesdropper relationships and the secure transmission schemes adopted in transmitters. Finally, numerical results are provided to illustrate the achievable performances under the new paradigm.
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