基于仿生控制机理的信息系统内生免疫体系研究

The architecture of information system is becoming more and more complicated, and the generated data is also growing exponentially. Facing the rapid transformation of information system, existing security architecture exposes some serious flaws: protection mechanisms are deployed after network constructing, which leads to some security policies are hard to implement protecting mechanisms efficiently; centralization protection model leads to serious decline of service capacity; small relevance between protection mechanisms and security statement results in decline of defense efficiency. How to solve above problems from original base is the core problem of future information system. The protection method must be changed from passive to initiative method. This paper proposes an endogenous immune architecture based on bionic control mechanism. Through study of human being's efficient neural control mechanisms, which include a mass of neurons throughout the system and highly integrated with functional organs, a task is executed with a series of basic actions, action's executing effects are monitored and deviations are calibrated in real time, a brain acts as a comprehensive analytical processing center for analysis and decision making. Based on the above characteristics, this paper constructs a neural control architecture for information system. Our architecture fully deploys security neurons in system. Functions and security are deeply involved in basic module. Based on proposed architecture, system includes some basic tasks which can be decomposed into a series of actions. When the system executes a task, executing path and actions' running data are monitored. Executing errors can be detected through feedback mechanism. Then the adjusting policy is executed to correct flaws. We also construct a bionic control model for proposed architecture. The analysis of model shows that security mechanism based on bionic control mechanism can maintain security state. By constructing prototype system, we analyzed task's running modes under different policies. The prototype system includes communication module and encryption and decryption module. Each module integrates security monitor and control parts. The control calibration mechanism is carried out by fuzzy cognitive map. Experimental results show that the proposed bionic control mechanism can adjust the executing strategy according to the changes of operating environment and maintain the effective operating of task. The mechanism based on bionic control provides basic theoretical support for the realization of endogenous immune system.