Abstract:An information-theoretical model for subliminal channel is proposed. The task of distinguishing between an innocent signature r and that containing a subliminal message is interpreted as a hypothesis testing problem. The security of the channel is quantified in terms of the relative entropy. The security formula of the subliminal channels is deduced with hypothesis testing, and the perfectly secure conditions is given.
张彤;杨波;王育民;李真富. 阈下信道的一个信息论模型[J]. 电子与信息学报, 2002, 24(5): 649-655 .
Zhang Tong①; Yang Bo①; Wang Yumin①; Li Zhenfu②. An information-theoretical model for subliminal channel. , 2002, 24(5): 649-655 .