【摘要】 本文提出P2P环境中协作对等组的接入控制机制。在完全非结构化的对等组中,本文采用分布式委托授权机制,以解决集中式授权的单点失效问题。本文基于信任管理语言RT,提出一种基于属性的对等组接入控制框架,阐述分散节点在投票方式下的联合授权机制,以满足多方节点的安全需求,并且基于JXTA平台验证了对等组接入控制机制方案的可行性。更多还原

【Abstract】 This paper proposes an admission control mechanism in collaborative peer groups. Intend for a pure decentralized model without centralized server,our framework employs a distributed delegation authorization mechanism. Multiple authorities could exist in this design,which could avoid single point of failure. Based on the role-based trust management language RT,this paper presents an attribute-based access control framework,and describes a formal joint authorization protocol under voting scheme,to satisfy security requirements of multiple peers. We also introduce our implementation experience by applying JXTA technology.更多还原