Abstract: Usage control is one of the next generation technologies that protect the digital resources. Petri net can specify distributions, concurrencies and synchronizations of usage control and is the effective technology for describing and analyzing usage control model. This paper defines the rules of pre-usage authorization and ongoing-usage authorization in usage control model and expresses them with Petri nets. And a conclusion is drawn that the representations succeed in describing the policies of usage authorization. UCONA is expressed with colored Petri net.

Key words: usage control, Petri net, authorization policies, control rules

摘要： 使用控制是最有希望的下一代数字资源使用保护技术，Petri网能够描述使用控制模型的分布、并发、同步等特征，是表达和研究使用控制模型的有效技术。该文定义了使用前授权过程和使用中授权过程的策略规则，采用Petri网进行了表达，分析了Petri网模型能够表达授权控制模型的使用授权策略，给出了使用控制授权模型的有色Petri网表示。

关键词: 使用控制, Petri网, 授权策略, 控制规则

CLC Number: 

• TP309.2