Secure physical layer network coding versus secure network coding
This work addresses the problem of secure message transmission in noisy networks for researchers in network coding and information security, presenting an incremental analysis of existing methods.
The paper compares secure physical layer network coding with secure network coding, demonstrating through several network examples that the former can outperform the latter in scenarios involving noisy channels.
Secure network coding realizes the secrecy of the message when the message is transmitted via noiseless network and a part of edges or a part of intermediate nodes are eavesdropped. In this framework, if the channels of the network has noise, we apply the error correction to noisy channel before applying the secure network coding. In contrast, secure physical layer network coding is a method to securely transmit a message by a combination of coding operation on nodes when the network is given as a set of noisy channels. In this paper, we give several examples of network, in which, secure physical layer network coding has advantage over secure network coding.