5、。本文首先介绍了DES加密算法的历史及主要分类,加密算法按时间分类分为古典密码与现代密码。重点叙述了数据加密标准DES的算法过程及其可实现性,也介绍了其他常用的对称加密算法。最后主要在理解DES算法的基础上进行实验演示并对DES加密算法的应用提出了范围。关键词:数据加密;DES;密码学 基于DES数据加密技术及其应用的研究ABSTRACTWith the advent of the information society, people in the enjoyment of information resources brought a
6、bout tremendous benefits, but also faced with a letter.Income security,a severetest.Then.The DES data encryption algorithmusesthe broadest sectional encryption algorithm block cipher, it took the most famous security key or the symmetrical key encryption algorithm, played
7、 the vital role in the computer cryptology and in the computer data communication developing process. This graduation project has mainly studied the DES symmetrical key data encryption algorithm. The DES algorithm has higher strong, carried on the common computer data tra
8、nsmission activity for us to provide the safety control.Thispaperfirstintroducesthehistoryandmai