目前多数访问控制模型都针对集中式的和相对静态的系统,不适宜主客体动态变化的协同环境,如P2P系统.文章针对P2P网络提出一种新的访问控制模型,利用Bayesian网络技术构造P2P网络中的信任机制,从网络节点间信任的角度建立访问控制模型,根据主客体的Bayesian信任网络对实体访问权限进行动态管理.
Nowadays,most of access control models have been studied extensively in centralized and static environment,and none of them meet the requirements of some dynamic collaborative environments,such as P2P system.In this paper,a novel access control scheme is developed to address P2P environments.The trust mechanism is constructed with Bayesian network model.The new access control model based on the trust of P2P members,and dynamically manages the access permission according to the Bayesian trust network of subjects and objects.