摘要
结合分布式环境下的安全需求,讨论了信任管理问题,提出了1种基于图的委托授权模型,并给出了形式化的描述,分析并解决了权限传播控制以及环状授权和冲突授权问题.最后给出了分布式环境下判定主体访问请求的方法并指出了需要进一步研究的问题.
Trust management was discussed according to security requirements in distributed environment. A graph based delegable model and its formal description were given. Permissions propagating control, conflict and cyclic in delegable model were analyzed and resolved. Finally, the scheme of determining access request of subject in distributed environment and future work were proposed.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2005年第6期5-7,21,共4页
Journal of Beijing University of Posts and Telecommunications
关键词
访问控制
信任管理
委托授权
图
模型
access control
trust management
delegable
graph
model
