基于DES的S-DES

S-DES Based on DES

DES作为长期使用的加密算法标准被广泛应用于软件加密和硬件加密,研究、分析DES加密算法的原理、特性,对推动现代密码学的发展具有十分重要的意义。本文围绕DES加密算法展开,通过S-DES算法模型,较详尽地阐述了DES加密原理及S-盒的一些特性:S-盒不唯一、S-盒的输入方式不唯一。

Encryption algorithm standard has been widely used in the software encryption and hardware encryption for a long time.It will be of great significance to research and analyze the principles and characteristics of DES encrypted algorithm in promoting the development of modern cryptography.Based on the study of DES,through S-DES algorithm model,this paper illustrates the encrypted principles of DES,and the characteristics of S-box that S-box is not unique,and S-box input modes are not unique,etc.