关键词: 网络攻防, 贝叶斯博弈, 粗糙Petri网, 攻防对峙模型, 最大攻防策略

Abstract: To solve the problem in attack-defense strategy research of complex network, an analysis method based on rough Bayesian game was proposed. By introducing rough set theory into object Petri net, the authors defined Attack-Defense Confrontation Model (A-DCM), which divided domain strategy set into equivalence class and accordingly put forward the characteristic strategy set. Rough Attack-Defense Game Model (RA-DGM) and utility function were presented, and the Bayesian equilibrium solution algorithm was given, so that the maximal attack-defense strategy set could be acquired. The analysis method was suitable for attack and defense research of complex network, which could reduce strategy space scale effectively. The experimental results verify the correctness and performance of the model, and demonstrate that the attack-defense strategy analysis method based on the model is more reasonable and effective.

Key words: network attack-defense, Bayesian game, rough Petri net, Attack-Defense Confrontation Model (A-DCM), maximal attack-defense strategy