Finite-state noiseless covert channels
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Covert channels in a multilevel secure computer system can be exploited by malicious software to compromise information. The maximum information rate of a known channel is determined by modeling the channel as a communications channel and calculating its capacity. The capacity of an important class of covert channels, finite-state noiseless channels with nonuniform transition times, is found by adapting a technique suggested by Shannon (1964).<<ETX>>
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