A highly reliable blockchain-based covert communication model
Li Meipeng1,Guo Zhaozhong2,Li Yanming1,Zhao Yuhua1,Zhang Peng1
（1. Unit 96941 of PLA, Beijing 100085, China; 2. Tianhe Guoyun Technology Co., Ltd., Changsha 410000, China）
Abstract： Cyberspace, as the fifth largest sovereign domain space after land, sea, air, and space, is the evolution of international strategy in the military field. The competition for information dominance in cyberspace places higher demands on the security and stability of military communication. Based on the requirements of future high confrontation and high intelligence battlefield and the latest research results of blockchain and cryptography, we design a highly reliable military information covert communication model, i.e., HRBCCM. Based on the data structure and verification logic of coin mixing smart contract, we design the construction and identification algorithm of parasitic transactions. The process of embedding and extracting information is perfectly integrated with the operational principles of coin mixing smart contract, which ensures high concealment and secure information transmission. We also conduct security analysis from four aspects: robustness, reliability, anti-traceability, and undetectability. A simulation testing environment was established to test and evaluate the transmission time and concealment rate of HRBCCM. The experimental results showed that concealment performance improved by 20% and transmission efficiency increased by 40 times. Finally, two typical application scenarios, i.e., global intelligence information transmission under peacetime public network conditions and reliable communication capability guarantee in wartime emergencies, were analyzed, highlighting the adaptability of the protocol's scenarios.
Key words : big data; data security; covert communication; blockchain
