【摘要】 隐通道以一种违背系统安全策略的方式泄露秘密信息,对系统安全造成很大威胁。文章综合分析了国内外较成熟的几种用于消除隐通道的协议,比较了它们在安全性、可靠性和系统性能等方面消除效果的差异,得出它们的思考角度和适用范围,在实际应用中可根据需求分别采用。更多还原

【Abstract】 Covert channel can leak sensitive information in a manner that violates the system’s security policy, so it will threaten the security of the system. This paper synthetically analyses some typical kinds of covert channel elimination protocols and compares the difference among the eliminated effect of these protocols in security, reliability and performance. From above analysis, conclusion can be drawn about each view of thinking and applicable scope. The appropriate method can be applied according to practical requirements.更多还原