Information Flow Control Model and Method in Distribute MILS

A new generation of avionics system has three major technical characteristics of high resource sharing, data integration and software intensive. However, in the cooperative combat environment, which has the problem of potential sensitive information leakage and tamper when the combat aircraft communicate with each other. In this paper, we are based on the single node of information flow control model, combined with PCS, proposed a distributed information flow control model in MILS, constructed the PCS information flow control strategy, and together with other trusted component of information flow control strategy that form the multi-level information flow control policy framework, which design an information flow control mechanism of PCS and realized the distributed information flow control in MILS. After analysis and verification, the design of the distributed information flow security control method in MILS can effectively ensure the confidentiality and integrity of the information among the nodes.