图1阐述了在分布式授权过程中所涉及的不同实体。
Figure 1 illustrates the various entities involved in distributed authorization.
TM系统从网络中搜索委派凭证以进行分布式授权决策，面临效率和可用性问题。
TM systems search delegation credentials from the network for making distributed authorization decisions, which is not efficient and highly available.
信任管理体系是一种能综合处理信任状、信任关系和安全策略，直接实现授权，且更高效、更完善的分布式授权方式。
Trust management is a better and more efficiency authorization mechanism which deals with the credentials, security policies and trust relationships integrated, and do authorization directly.
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