Low Transmission Overhead for Polar Coding Physical-Layer Encryption  

作　　者：Hongxu Jin Rongke Liu Chenyu Zhang 

机构地区：[1]School of Electronics and Information Engineering,Beihang University

出　　处：《China Communications》2019年第2期246-256,共11页中国通信（英文版）

基　　金：supported in part by the National Natural Science Foundation of China (Grant No. 61871009)

摘　　要：In this paper, for physical-layer security(PLS), a novel scheme of polar coding encryption is introduced in the wiretap channel(WTC) model. To decrease transmission overhead of the shared secret information and enhance the security performance against an attacker, we have employed the two following encryption technologies: Firstly, randomization of output bits is not dependent on the traditional randomized bit-channels but they are directly flipped through the random bit sequence. Secondly, for employing Advanced Encryption Standard(AES), we utilize the secret seed to extend an initial secret key of AES cryptosystem, which it appears a good avalanche performance. Result analyses demonstrate that the proposed scheme is strongly resistant against conventional attacks.In this paper, for physical-layer security(PLS), a novel scheme of polar coding encryption is introduced in the wiretap channel(WTC) model. To decrease transmission overhead of the shared secret information and enhance the security performance against an attacker, we have employed the two following encryption technologies: Firstly, randomization of output bits is not dependent on the traditional randomized bit-channels but they are directly flipped through the random bit sequence. Secondly, for employing Advanced Encryption Standard(AES), we utilize the secret seed to extend an initial secret key of AES cryptosystem, which it appears a good avalanche performance. Result analyses demonstrate that the proposed scheme is strongly resistant against conventional attacks.

关 键 词：WIRETAP channel polar codes physical-layer security CRYPTOGRAPHY attack 

分 类 号：TN[电子电信]