| 阈下信道分类及边信息协商问题研究 |
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| 引用本文： | 董庆宽 肖国镇. 阈下信道分类及边信息协商问题研究[J]. 计算机科学, 2004, 31(5): 103-106 |
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| 作者姓名： | 董庆宽 肖国镇 |
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| 作者单位： | 西安电子科技大学ISN综合业务网国家重点实验室,西安,710071;西安电子科技大学ISN综合业务网国家重点实验室,西安,710071 |
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| 基金项目： | 国家自然科学基金重大项目(No.90104005)，97-3项目(No.G1999035804) |
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| 摘 要： | 在本文中我们首先给出了阈下信道的一般模型和含有阈下信道的密码系统的定义，讨论了信任度和安全度两个指标。然后我们对目前的构造技术进行了系统的分类，对各类方案的容量、计算复杂度及边信息量等进行较为深入的研究，并讨论了认证码中的阈下信道与一般阈下信道的差别。我们首次提出了边信息协商的概念，并给出了几个实现方案。
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| 关 键 词： | 数字签名 阈下信道 边信息 信息隐藏 |
Research on the Classification of Subliminal Channels and Side Information Exchange |
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| DONG Qing-Kuan XIAO Guo-Zhen. Research on the Classification of Subliminal Channels and Side Information Exchange[J]. Computer Science, 2004, 31(5): 103-106 |
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| Authors: | DONG Qing-Kuan XIAO Guo-Zhen |
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| Abstract: | A definition of cryptosystem with subliminal channels and a model of subliminal channels are given in this paper. And two index, confiding degree and security degree, are also discussed. Then a systemic classification of subliminal channels techniques is given. And a sound research on capacity, computational complexity and side information has also been done- We then discuss the difference between the subliminal channels in authentication codes and the one in other system. Finally,a concept of side information exchange is first presented and some schemes are given. |
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| Keywords: | Digital signature Subliminal channel Side information Information hiding |
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