An improved blp model with response blind area eliminated
Gang Liu, Guofang Zhang, Runnan Zhang, Juan Cui, Quan Wang, Shaomin Ji · 2017
Bell-LaPadula model is the most classical multilevel security access control model, however, the existence of the response blind area in Bell-LaPadula model is a great threat for system. In this paper we propose an improved Bell-LaPadula model combining with obligation mechanism. Response mechanism is also introduced in the improved model which can resolve the disadvantage of response blind area. Furthermore, the security of the improved model and covert channel is analyzed in detail.