摘要
一个多级安全实时数据库系统不仅需要有安全限制,同时也要有时间约束.由于安全性与实时性需求之间冲突的存在而不可避免地产生隐蔽通道和优先倒置问题,文中首先分析多级安全实时数据库系统中实时性与安全性需求之间的冲突,而后基于HP 2PL协议,结合安全因素给出了一种解决冲突的算法.
A multilevel real-time database system must have security constrains in addition to timing constrains. Covert channel and priority inversion problems can not be avoided because of the conflict between security and timeliness requirements. This paper analyzes the conflict between these two requirements in multilevel real-time database system, and then based on HP-2PL gives an algorithm combining with the secure factor for the conflict.
出处
《海军工程大学学报》
CAS
2004年第5期65-67,70,共4页
Journal of Naval University of Engineering
基金
国家重点基础研究发展规划(973)项目(G1999035801)
关键词
多级安全实时数据库
实时数据库
多级安全
隐蔽通道
优先倒置
multilevel secure real-time database
real-time database
multilevel security
covert channel
priority inversion
