An Improved State Transition-Based Security Policy Conflict Detection Algorithm

Security policy is the core to ensure the system operating safely, security policy conflict will cause the system to suffer a security threaten, which even make system crash, therefore security policy conflict detection is particularly important. This paper researches the type of intra-node security policy conflict detection, analyses the complexity of algorithm of security policy conflict detection, improves the algorithm of security policy conflict detection which based on state transition, proves that the algorithm improved efficiency of security policy conflict detection. Finally, we compare the performance of conflict detection algorithms between the previous and the improved one's, verify that the algorithm is correct, efficient, and has practical value.