Before 1970, in order to protect the information security in computer systems, mandatory and discretionary access control policy had been widely applied in secure computer systems.
在上世纪七十年代以前，为保证计算机系统中的信息安全性，自主存取控制和强制存取控制策略在计算机多安全级系统中得到了广泛的应用。
To keep independent object-oriented system secure from Trojan horse, there exists already a restrictive policy that blends information flow control with discretionary access control.
描述了面向对象系统的数据模型，研究了信息流和信息传输，并以此为基础给出了基于自主访问控制策略的分布式对象系统的信息流控制方法。
To keep independent object-oriented system secure from Trojan horse, there exists already a restrictive policy that blends information flow control with discretionary access control.
描述了面向对象系统的数据模型，研究了信息流和信息传输，并以此为基础给出了基于自主访问控制策略的分布式对象系统的信息流控制方法。
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