多主体多方向的可管理使用控制模型研究

在高度动态的分布式环境下，传统单方向的访问控制已经不能为系统提供足够的可信赖性。本文分析了多种主体之间的相互关系，针对隐私保护问题提出了可管理的使用控制模型。该模型能够解决多种主体之间的并行控制、系列控制和使用控制问题。本文还对实现AUCON的安全体系结构和相关的安全机制进行了细致的描述。分层的方法可以为解
决问题提供一个完整而高效的安全解决方案。

On an Administrative Usage Control Model for Multi-Subject and Multi-Direction Access Control

In today＇s dynamic distributed digital environments, the traditional one-way control no longer provides adequate trustworthiness. We review three kin  ds of subjects and analyze their relationships. Based on the usage control model, we propose an administrative usage control model named AUCON to resolve the access control problem for parallel control, series control,and usage control. AUCON provides a formal model which can control the provider subjec t to issue tickets for consumer subjects and monitor the access of consumers to privacy-sensitive objects. The architecture section presents formal stru ctural ways in which appropriate mechanisms can be implemented to achieve predefined security objectives. This layered approach provides a whole effecti ve security solution to the privacy protection problerrL