一种DES组合算法

A Combination Algorithm Based on DES

随着计算机运算速度的增长,DES算法由于密钥长度较小,不能抵御暴力攻击,已经不适应当今网络对数据加密安全性的要求,增加密钥及分组长度是提高加密算法抗暴力攻击的主要方法。设计并实现了一种DES组合算法,通过将两组DES进行串联及耦合,使密钥长度增加至112 bits,明文/密文分组长度增加至128 bits,从而有效地抵御暴力破解的攻击。

With the growth of computing speed,DES algorithm can＇t resist brute force attacks and no longer meets today＇s network security requirements of data encryption because of short key length.One way to improve its anti-attack performance is to increase the length of the key and the texts.The design and implementation of an algorithm is introduced,which improves DES Algorithm by adding the key＇s length to 112 bits and adding the plaintexts＇/ciphertexts＇ length to 128 bits at the same time.So the algorithm can resist the attacks from brute force more effectively.