BLP安全模型的分析及改进

本文分析了BLP模型在机密性、数据完整性和可用性方面存在的缺陷,通过修改密级、范围和规则增强系统的安全性,引入多实例以解决机密性和完整性的矛盾,使用主表和从表对BLP模型加以改造,使得BLP模型具有较高的安全性和可用性,通过重新定义读写规则消除信号通道,增强系统的数据完整性。改进后的模型可以作为多级安全数据库管理系统的安全模型。

The BLP security model analysis and improves

This article analyzed the BLP model the flaw which in the secret,the data integrity and the usability aspect existed,through repaired the level,the scope and the rule strengthens the system security,introduced the multi-examples solves the secret and the complete contradiction, caused the user to show and performs from the table to the BLP model to transform,enables the BLP model to have a higher security and the usability,was allowed to take the multistage security database management system the model.