【摘要】 信任管理是一种具有动态可扩展性的新型访问控制方法。在现有信任管理研究成果的基础上,参照人类社会基于信任的交互机制,提出了一种基于信任度的访问控制模型,并对其中的信任传播与信任关系发现进行了重点研究。参照人类社会的信任传播模式,并基于自组织理论,提出了一种信任自主传播模型,实现信任动态、广泛的传播。通过引入计算机网络中分布式路由算法的思想,提出了一种信任关系的分布式追溯发现算法。该算法的时间复杂度达到O(k)(k为信任关系中的实体数),与现有信任关系发现算法相比,效率得到显著提高。更多还原

【Abstract】 Trust management is a new kind of access control method which is dynamic and scalable.Based on the present trust management research and the trust-based interactive mechanism of human society,this paper submits a trust degree based access control model,and mainly probes into the problems of trust delegation and trust relation discovery.Based on the trust propagating model of human society and the self-organization theory,the paper proposes a self-organized trust delegation model,which can achieve dynamic and extensive trust propagation.By referring to the idea of the distributed routing algorithms in computer networks,it puts forward a distributed trust tracing algorithm,whose time complexity is O(k)(k is the number of entities in the trust relations).The algorithm prominently proves the efficiency of trust relation discovery compared with other algorithms.更多还原