分组密码工作模式的分析及应用  

ANALYSIS AND APPLICATION ON WORKING MODE OF THE BLOCK CIPHER

作　　者：刘平[1] 

机构地区：[1]南阳理工学院计算机与信息工程学院,河南南阳473004

出　　处：《南阳理工学院学报》2013年第3期21-25,共5页Journal of Nanyang Institute of Technology

摘　　要：分组密码是一种应用较为广泛的对称密码算法,为了适应于不同的应用环境,可以构造出不同的加解密处理方法,形成不同的工作模式。本文对分组密码的四种工作模式的原理进行了详细分析,并对比了各自的优缺点,最后给出了CBC模式在消息认证方面的实际应用,为分组密码体制今后进一步的完善和发展提供了参考。Block cipher is a symmetric cipher algorithm used widely.In order to adapt to the different application environment,different encryption methods were constructed,then it formed the different working modes.This paper made detailed analysis on the principle of four kinds of working modes of block cipher,and it also compared the respective advantages and disadvantages.Finally,it gave the practical application of CBC mode in terms of message authentication,so it can provide a reference for the further perfection and development of block cipher.

关 键 词：分组密码 工作模式 加密 解密 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术] TN9[电子电信—信息与通信工程]