Blockchain Meets Covert Communication: A Survey

【Author】 Chen, Zhuo; Zhu, Liehuang; Jiang, Peng; Zhang, Can; Gao, Feng; He, Jialing; Xu, Dawei; Zhang, Yan

【Source】IEEE COMMUNICATIONS SURVEYS AND TUTORIALS

【影响因子】33.840

【Abstract】Covert communication enables covert information transmission in an undetectable way to prevent the exposure of communication behaviors. Blockchain-based covert communication breaks through the limitations on concealment, reliability and anti-traceability, and has shown promising application prospects in both sensitive data transmission and botnets. Although there are studies on blockchain-based covert communication, it still lacks a systematic investigation. In this paper, we conduct a comprehensive study on channel building and survey its core technologies by information embedding, transaction filtering, and transaction obfuscation. We also summarize evaluation metrics to better analyze blockchain-based covert channels. Privacy aspects are also discussed. Finally, we suggest seven future directions to stir research efforts into this area.

【Keywords】Blockchain; covert communication; covert channel; Bitcoin; Ethereum

【发表时间】2022

【收录时间】2023-04-10

【文献类型】综述

【主题类别】

区块链应用-实体经济-通信领域