摘要： 为提高安全访问控制中多策略组合的灵活度，满足系统的安全性和实用性，提出一种基于系统可信度的动态安全访问控制模型。该模型能根据系统状态的变化，动态调整安全策略间的组合方式，达到最优化系统性能的目的。实验结果证明，该模型对多策略的支持更为灵活，在保证系统原有安全性的同时进一步提高了系统的实用性。

关键词: 安全访问控制, 系统可信度, 可信链

Abstract: This paper proposes a dynamic security access control model based on system reliability, so as to improve the flexibility of combination among multiple security access control strategies, and to ensure system security and practicality. The model can choose the proper kind of combination among the security access control strategies dynamically in order to deal with different system states and improve the whole system performance. Experimental results prove that this model makes the multiple strategies control more flexible, ensures the system security, and improves practicality of the system.

Key words: security access control, system reliability, chain of trust

中图分类号: 

• TP309