刘氏加密算法的一种改进方案

刘氏高强度公开加密算法利用可变长密钥控制随机分割、随机格式、随机函数和非线性加密解密变换的结构、模式和运算结果，从而实现了极高的加密强度．但也有学者指出该算法只进行了一次非线性变换且没有循环迭代．本文在对刘氏高强度公开加密算法进行分析研究及其与DES实现方法比较的基础上，针对该算法存在的问题，综合DES算法和刘氏高强度公开加密算法的优点，进一步增加了循环及其迭代方案，使信息流达到充分的扩散和混乱，提高了加密强度．

An improvement scheme for Liu's encryption algorithm

Liu's high intensity public encryption algorithm controls the structure, mode and operation (result of) random cutting apart, random form,function and non-linear encryption decipher by utilizing (variable )long key, and thus realizesd the extremely high intensity of encryption. But some scholars (pointed out )that the algorithm has no circulation and there is only one non-linear change. In view of the defects of Liu's algorithm and by extracting the merits of DES algorithm and Liu's encrypt algorithm, we have improved the algorithm by increasing the circurlation and iterative operation such thea the (information) flow has reached abundant mixing and confusion, and the intensity of encrypting has been (enhanced.)