关键词: 访问控制, 信任管理, 委托授权, 图, 模型

Abstract:

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.

Key words: access control； trust management； delegable, graph； model