摘要
介绍了Schnorr数字签名算法,分析了阈下信道产生的原因,提出了Shnorr数字签名中几种阈下信道的构造方法,证明了其存在性。其中前两种阈下信道主要是基于签名者和验签者之间的共享秘密完成的,第三种基于多次的签名认证。针对这3种阈下信道,根据他们的产生原因提出了封闭阈下信道的基本方法和思想,对于其它数字签名中阈下信道的构造提供了借鉴。
The Shnorr digital signature is introduced, why the subliminal channel appears is analyzed, several methods to produce subliminal channel in the Shnorr digital signature are put forward, proved that the subliminal channel is existed. Thetwoofsubliminalchannels depend on the sharing secret between the signer and the verifier, and the other is depends on signature verified. Finally the beating methods of them is introduced, the experience for other subliminal channels is provided.
出处
《计算机工程与设计》
CSCD
北大核心
2007年第5期1029-1031,F0003,共4页
Computer Engineering and Design
关键词
数字签名
阁下信道
离散对数
共享秘密
中间人攻击
digital signature
subliminal channel
discrete logarithm
sharing secret
man in the middle attack
