State observer based adaptive information assurance evaluation model

Information Assurance (IA) is drawing considerable attention of researchers in protecting key intelligent system and state network infrastructure from attacks and intrusion. IA is a complex system engineering, the operation of IA is a dynamic adjust processing. This paper applied the system control theory in the IA to set up a multi-input and multi-output control system with output feedback. In the proposed model, the security of systems is quantified based on the security qualities of and interrelations between sub-systems. Simulation results show that this proposed model can meet the requirements of system security, and the model works well in the information assurance evaluation.