2018/12/29 by Yizhi Zhao, Zhao, Yizhi, Hongmei Chi +1
Computer Science · Engineering · Mathematics · #Chaining #Channel (broadcasting) #Channel state information #Coding (social sciences) #Computer network #Computer science #Computer security #Cooperative Communication and Network Coding #Decoding methods #Error Correcting Code Techniques #FOS: Computer and information sciences #Information Theory (cs.IT) #Information security #Information-theoretic security #Mathematics #Physics #Polar #Polar code #Secrecy #Secure coding #Telecommunications #Topology (electrical circuits) #Wireless #Wireless Communication Security Techniques #cs.IT #math.IT
paper · pdf · doi:10.48550/arxiv.1812.11271
published in arXiv (Cornell University) (Cornell University)
openalex publication_date 2018/12/29 · arxiv created 2020/01/21 · arxiv updated 2020/01/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/08
In this paper, we investigate the secure coding issue for a wiretap channel model with fixed main channel and varying wiretap channel, by assuming that legitimate parties can obtain the wiretapping channel state information (CSI) after some time delay. For the symmetric degraded delay CSI case, we present an explicit weak security scheme by constructing secure polar codes on a one-time pad chaining structure, and prove its weak security, reliability and capability of approaching the secrecy capacity of perfect CSI case with delay CSI assumption. Further for the symmetric no-degraded delay CSI case, we present a modified multi-block chaining structure in which the original subset of frozen bit is designed for conveying functional random bits securely. Then we combine this modified multi-block chaining structure with the weak security scheme to construct an explicit strong security polar coding scheme, and prove its strong security, reliability and also the capability of approaching the secrecy capacity of perfect CSI case with delay CSI assumption. At last, we carry out stimulations to prove the performance of both secure schemes.