Secure polar coding for a joint source-channel model
Secure polar coding for a joint source-channel model作者机构：National Engineering Laboratory for Mobile Network TechnologiesBeijing University of Posts and Telecommunications
出 版 物：《Science China(Information Sciences)》 (中国科学:信息科学(英文版))
年 卷 期：2021年第64卷第11期
页 面：187-206页
核心收录：
学科分类：11[军事学] 1105[军事学-军队指挥学] 0839[工学-网络空间安全] 08[工学] 110505[军事学-密码学] 110503[军事学-军事通信学]
基 金：supported in part by National Key R&D Program of China (Grant No. 2018YFB1801101) in part by National Natural Science Foundation of China (Grant Nos. 61932005, 61941114, 61901051)
主 题：polar codes joint source-channel model correlated sources secret-key generation wiretap channel
摘 要：This paper investigates a joint source-channel model where Alice, Bob, and Eve, observe components of a discrete memoryless source and communicate over a discrete memoryless wiretap channel which is independent of the source. Alice and Bob wish to agree upon a secret key and simultaneously communicate a secret message, both of which are required to be kept concealed from Eve. An achievable tradeoff region between the secret-key and secret-message rates has been established in the literature. In this paper, we propose an explicit polar coding scheme that achieves the tradeoff region for general sources and channels under the strong secrecy criterion. The encoding scheme is constructed based on a nontrivial combination of(1) encoding scheme for secret-key generation using correlated sources,(2) utilizing the generated key as a one-time pad to encrypt the secret message partially, and(3) a modified form of wiretap channel encoding scheme that incorporates the structure of superposition coding.
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