Subliminal channel and its close scheme in sequential multi-signature based on elliptic curve cryptosystem

doi:10.3778/j.issn.1002-8331.2009.14.023

Computer Engineering and Applications ›› 2009, Vol. 45 ›› Issue (14): 79-80.DOI: 10.3778/j.issn.1002-8331.2009.14.023

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Subliminal channel and its close scheme in sequential multi-signature based on elliptic curve cryptosystem

WANG Jian-feng,MENG Tao,SUN Sheng-he

Department of Automatic Test and Control，Harbin Institute of Technology，Harbin 150080，China

Received:2008-03-18 Revised:2008-06-13 Online:2009-05-11 Published:2009-05-11
Contact: WANG Jian-feng

椭圆曲线有序多重签名中阈下信道及封闭方法

王建峰,孟涛,孙圣和

哈尔滨工业大学自动化测试与控制研究所电气工程及自动化学院，哈尔滨 150080

通讯作者: 王建峰

Abstract

Abstract: The subliminal channel is a covert communication channel constructed in public correspondence pattern.In this paper，the subliminal channel in an existing sequential multi-signature algorithm based on elliptic curve cryptosystem is analyzed.And the wideband and narrowband subliminal channel in the digital multi-signature is discussed on the presence and capacity.A scheme for closing the subliminal channel in the digital multi-signature is given，which is based on commitment-and-cover method.The security and feasibility of this scheme is analyzed and discussed.

Key words: digital signature, sequential multi-signature, elliptic curve cryptosystem, subliminal channel

摘要： 阈下信道是在正常公开信道的通信模式下所建立的一种传递隐藏信息的秘密信道。以一种基于椭圆曲线密码体制的有序多重签名算法为例，对其中存在的宽带和窄带阈下信道进行了具体分析，并提出一种基于承诺掩蔽的阈下信道封闭方案，并对该方案的安全性和可行性进行了理论分析和探讨。

关键词: 数字签名, 有序多重签名, 椭圆曲线密码体制, 阈下信道

WANG Jian-feng,MENG Tao,SUN Sheng-he. Subliminal channel and its close scheme in sequential multi-signature based on elliptic curve cryptosystem[J]. Computer Engineering and Applications, 2009, 45(14): 79-80.

王建峰,孟涛,孙圣和. 椭圆曲线有序多重签名中阈下信道及封闭方法[J]. 计算机工程与应用, 2009, 45(14): 79-80.

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Subliminal channel and its close scheme in sequential multi-signature based on elliptic curve cryptosystem

椭圆曲线有序多重签名中阈下信道及封闭方法

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