摘要
基于多实例的思想提出了一种新的模糊级别的多级安全模型,将多个仅密级不同的元组合并表示,并用安全模式来表示元组所适用的密级,只要主体的许可级别匹配此安全模式,便可存取此元组。这种模型解决了现有多级安全数据模型中存在的数据冗余度大及隐通道等问题。
In this paper, a new fuzzy multilevel security data model based on polyinstantiation is put forward. By this model, some tuples with different security level are merged into a tuple with a security pattern which matches those tuples＇ security level, and the user can access the resource if only this resource＇s security pattern match the user＇s permits level. This model solves such problems as data redundancy and covert channel.
出处
《微型机与应用》
2010年第17期77-80,共4页
Microcomputer & Its Applications
基金
湖南省教育厅资助科研项目(编号:09C406)
关键词
多级安全
多实例
数据模型
合并
安全模式
multilevel security
polyinstantiation
data model
merge
security pattern
