IEEE Transactions on Information Forensics and Security
IEEE Transactions on Information Forensics and Security
5 years ago

Polar Coding for the Wiretap Channel With Shared Key

Na Li, Xiaofeng Tao, , Haowei Wang, Zhu Han
The wiretap channel with shared key (WTC-K) refers to the classic wiretap channel with a secret key of arbitrary rate shared between the transmitter and the legitimate receiver. While the secrecy capacity of WTC-K has been obtained using random coding arguments, in this paper, we propose a low-complexity polar coding scheme achieving the secrecy capacity under the strong secrecy condition. Our construction consists of choosing the sets of information indices and using the shared key properly. Specifically, we utilize the structure of superposition coding in the proposed scheme.

Publisher URL: http://ieeexplore.ieee.org/document/8113572

DOI: 8113572

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