摘要
利用混沌现象的“蝴蝶”效应和难以预测性等特点,提出利用超混沌序列改进分组密码算法的思想,实现基于超混沌序列的DES(数据加密标准)和AES(高级加密标准)算法,给出改进算法用于加密文本和图像数据的应用实例,分析比较改进后的算法和传统分组密码算法在安全性和抗破译性方面的性能。研究表明,分组密码算法和超混沌序列技术结合能够进一步提高系统的安全性和抗破译性能。
By use of the butterfly effect and hard -to -predict characteristics of hyperchaos, a new idea of improving the block encryption ciphers based on hyperchaotic sequence is proposed. DES（Data Encryption Standard） and AES（Advanced Eneryption Standard） algorithms are implemented in this way. Examples are given on the application of the improved algorithms to the image and text encryption, comparative analysis is made between the improved and conventional algorithms in terms of the security and anti-attack ability. The study has shown that the integration of block encryption cipher and hyperchaotic sequence technology can effectively enhance the security and anti -attack performance of the system.
出处
《南京邮电学院学报（自然科学版）》
2005年第4期80-84,共5页
Journal of Nanjing University of Posts and Telecommunications
基金
江苏省高校青蓝工程计划(JS200407)
江苏省高校自然科学基金(04KJA517092)重点资助项目
关键词
超混沌序列
分组密码算法
加密:密钥
hyperchaotic sequences
block encryption ciphers
encryption
secret-key
