... 自主访问控制(Discretionary Access Control DAC) 强制访问控制(Mandatory Access Control MAC) 基于角色的访问控制(Ro1e- ...
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The NSA found that most operating systems' security mechanisms, including Windows and most UNIX and Linux systems, only implement "discretionary access control" (DAC) mechanisms.
NSA发现大部分操作系统的安全机制，包括Windows和大部分UNIX和Linux系统，只实现了“选择性访问控制(discretionary access control)”(DAC)机制。
The first level is the traditional Discretionary Access Control (DAC).
第一级是传统的自主访问控制(Discretionary Access Control, DAC)。
Discretionary access control (DAC) is the kernel of most protection mechanism, and the research on safety of DAC concerns whether rights can be leaked to unauthorized subjects.
自由访问控制(DAC)是大多数操作系统保护机制的核心，DAC的安全性研究关注对象的权限是否被泄漏给未授权主体。
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