构造分组无数据扩展公钥密码体制的一般方法

A GENERAL METHOD FOR CONSTRUCTING PUBLIC KEY BLOCK CIPHERS OF NO DATA EXPANSION

本文尝试将多值逻辑函数结构理论用于公开钥密码学研究，建立了各种分组公开钥密码体制之间的数学联系，给出了构造分组无数据扩展公开钥密码体制的一般方法。利用本文给出的方法，可以构造出形形色色的公开钥密码体制，其中包括著名的ＲＳＡ体制．作者也指出，系统地讨论各种多值逻辑函数的可逆性及其密码性质是一个值得研究的课题。

In this paper,the structure theory many-valued logilfunctions is applied to studying cryptography. First, the mathematical relationship among different public key block ciphers has been established. Then a general method, which can be used to construct various public key block orphers including the famous cryptosystem RSA,has been presented. And finally it is also pointed out that studying the inversibility of various many-valued logic functions may be of significance to oryptology.