On Several Cryptology Analysis Of The History And Future Development Prospects

Cryptology is a science which research encrypting,decrypting,and cryptanalysis the information.Cryptology has two outstanding features.One is that its historical is very remote,the other is that its mathematics characteristic is very important.This paper has emphatically introduced password method which based on theory of math,and introduced cryptology's background of development,domestic and foreign present situations,goal and significance.In this paper,it emphatically analyzed the process of classical,modern,liu,and public key.With the examples of ShanDong university,the paper introduced the principle RSA,ELGamal,and Ellipse. At last,this paper introduced the forecast of cryptology.At the base of summarized of the predecessor achievement foundation.This article further thorough analysis algorithms,system of three theorys of cryptology. Especially in example application,I can practical application aspect understanding even more thoroughness.Algorithm forecast of the article,i has carded on the very good assurance to the cryptology development,has the vital role without doubt to the later work.1.This article has analyzed the classical cryptology theory,has studied the classical cryptology origin and the development with emphasis,and has carried on the introduction to the classical cryptology typical algorithm.2.This paper has analyzed the modern grouping cryptology theory,introduced the definition of grouping cryptology,has analyzed the cryptology design concept,as well as grouping cryptology characteristic,and has made the research emphatically to the hot topic questions of grouping cryptology. 3.This paper has analyzed the class cryptology theory,introduced main representative personage of stream cipher,has analyzed the stream cipher mathematical model,introduced the design criterion and the examination standard, transferred finally the password present situation and the development have carried on the summary.4.This paper has analyzed the public key cryptology theory,introduced the representative personage of public key cryptology,has analyzed the public key cryptology principle of work,and its technical application has done the research.5.This paper has analyzed the RSA public key password theory,in view of the cryptology security and the distinction two major problems,has studied the cryptology public key cipher system RSA application,lies in the public key system's concept with emphasis,mathematics foundation as well as the public key cipher system's security.6.This paper has analyzed the ELGamal public key cryptology theory,to its encryption algorithm,the cryptology system realized and the security specifically has made the analysis.7.This paper has analyzed the elliptic curve cryptology theory,has studied the elliptic curve cryptology basic mathematical theory,the elliptic curve separate logarithm question,the elliptic curve cipher system and the related achievement.