Hill_2密码体系加密过程中的哑元问题  

The Design of Dummy Variable in Hill_2 Coding System

作　　者：万福永[1] 戴浩晖[1] 

机构地区：[1]华东师范大学数学系,上海200062

出　　处：《数学的实践与认识》2007年第8期87-90,共4页Mathematics in Practice and Theory

摘　　要：密码学在现代生活中已经有着不可替代的作用.Hill密码虽属经典密码学范畴,但对于学习和理解密码学体系具有特别的意义.通过利用Hill2方法对信号的加密和解密的研究,指出了其中存在的哑元设计问题并对问题作了分析,最后给出了解决哑元设计问题的若干方案,还提出了一些问题,希望我们的工作能对密码学的研究有所裨益.In the living of modern times, Cryptology couldn′t be replaced with any other.Although Hill2 coding system is only one embranchment of classical cryptology,it would be helpful to the study and learning of cryptology if we could learn Hill2 in details.In this paper we will analyze the process of encrypting and decrypting in Hill2 coding system.We find there exists the bug in the design of dummy variable,then we present three methods,which could be used to overcome the bug.In the last of paper,we advanced some further questions.We hope our work will be helpful to the development of cryptology.

关 键 词：Hill2密码 密钥 哑元 

分 类 号：O236.2[理学—运筹学与控制论] O157[理学—数学]