一种新型流密码系统

A New Stream Cipher

根据人们常用的洗牌算法对LFSR进行非线性变换,利用该变换可以改变元素原有的排列顺序,扰乱序列原有的某种规律性和结构性,提高序列的非线性,从而构造出一种新流密码系统。实验结果表明,由该系统产生的密钥序列具有均匀性,相关性小的特点。该密码系统能构被应用于网络安全等领域。

A new stream cipher is designed in this paper by transforming the LFSR sequence based on shuffle arithmetic. This transformation can disorder the old order and structure of the sequence and enhance the non-linear of the sequence. The results of experiment suggest that the key sequence is independently and weak correlation. Therefor, the new stream cipher can be applied to Network Security.