【摘要】 本文介绍了阈下信道的概念、产生的历史背景及其作为信息隐藏技术的主要应用,阐明了封闭阈下信道的意义。在分析了封闭阈下信道的某些方案及其存在的缺陷之后,提出了改进的chaum零知识证明协议以及一种可转换协议,成功地封闭了已知的几种阈下信道。更多还原

【Abstract】 In this paper, we introduce the concept of subliminal channels with its historical background and the major application as it being a kind of information hiding technology. We give the meaning of closing subliminal channels. After analyzing some failed schemes for closing subliminal channels, wepresent an improved Chaum’s zero-knowledge proof protocol and a divertible protocol which can close the known subliminal channels.更多还原