Reducing timing channels with fuzzy time
Reducing timing channels with fuzzy time
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DOI：
10.1109/risp.1991.130768
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发表时间：
1991-05
期刊：
影响因子：
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通讯作者：
Wei-Ming Hu
中科院分区：
文献类型：
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作者：
Wei-Ming Hu
模糊时间是一系列技术，可以通过使所有时钟可用于噪音来减少掩盖计时通道的带宽。为了应对高速硬件正时渠道所带来的问题而开发的，在VAX Security内核中实现了模糊时间。事实证明，对于VAX安全内核中的定时渠道，模糊时间非常有效。模糊的时间不仅关闭了高速频道，而且以比期待的性能成本要低得多。据信，VAX安全内核设法满足了秘密频道指南，同时保持了安全性和性能之间的良好平衡。
Fuzzy time is a collection of techniques that reduces the bandwidths of covert timing channels by making all clocks available to a process noisy. Developed in response to the problems posed by high-speed hardware timing channels, fuzzy time has been implemented in the VAX security kernel. Fuzzy time has proven to be highly effective against the timing channels in the VAX security kernel. Not only does fuzzy time close the high-speed channels, it does so at a much lower-than-anticipated performance cost. It is believed that the VAX security kernal managed to meet the covert channel guidelines while maintaining a good balance between security and performance.>