摘要： 分析了RT0信任管理语言及其语义,添加了凭证类型。RT0中证明授权请求是通过构建凭证链进行,通过对前后向链构建规则进行分析,总结并完善了凭证链构建时非线性结构的处理。提出了角色推论深度的概念,讨论了链构建时的推论深度控制机制,解决了对授权安全级别进行控制的问题。给出了使用栈管理待处理角色表达式的方案,使链构建有序进行。

关键词: 信任管理, 分布式授权, 凭证, 凭证链

Abstract: This paper analyses the RT0 trust management language and its semantics,adds two kinds of credentials.The proof of authorize request in RT0 is done by credential chain discovery.It summarizes the problems involved in the chain discovery,discusses and perfects the management of non-linear structure during the chain discovery.A stack management scheme of pending role expressions is proposed.Finally,it also proposes a scheme of control role inference depth based on the consideration of control depth of the chain.

中图分类号: 

• TP393.08