On Scheme for Dynamic Determination of Subject's Current Sensitivity Label
Yufang Sun · Dianzi xuebao · 2001
BellLaPadula (BLP) model is the ground for the implementation of multilevel sec urity (MLS) in secure operating systems.The key spirit of BLP model is to make d ecision on subject's request to access objects according to subject's current se nsitivity label.This paper discusses a scheme for the dynamic determination of s ubject's current sensitivity label.First,as the basis of further exploration,the BLP model is briefly described.Then,the scheme in question is constructed based on the BLP model.Finally,the qualifying condition for the scheme is presented a nd its necessity and correctness are demonstrated.