摘要
分组密码应用广泛,但容易受到差分密码分析和线性密码分析的攻击.运用多重加密思想,提出了一个新的三重加密方案,在方案中加入密钥进行异或运算并且加密过程中用的密钥使用密钥级联方式,使密码算法的强度得到提高,并分析其安全性特征.
The application of block cipher is widespread. Yet, it is vulnerable to the attacks of differential crypt analysis and linear crypt analysis. Based on multiple encryption, a new scheme of triple encryption is proposed. The scheme joins the key for XOR operation and the encryption process involves the key cascade mode. Thus, the strength of the cipher algorithm has been improved. We also give an analysis of its security features.
出处
《西安文理学院学报（自然科学版）》
2013年第1期88-90,共3页
Journal of Xi’an University(Natural Science Edition)
基金
四川文理学院院级科研项目"分组密码的多重加密技术研究"(2011Z007Y)
关键词
信息安全
分组密码
多重加密
DES
information security
block cipher
multiple encryption
DES
