摘要
论文提出了一种新的基于混沌迭代映射的加密算法。文中采用了直接对明文ASCII编码后的0、1序列进行加密的方式,使得混沌迭代输出序列进入任意类型子区域的概率大为上升,从而大大减少了对任意明文字符进行加密时混沌迭代映射所需要进行的迭代次数。同时,文中在混沌系统中引入一个动态变化的参数来代表当前的加密进程,使得即使相同的明文,在不同的加密进程中也被加密成不同的密文。仿真表明,无论在安全性还是效率方面和已有的算法相比都有显著的提高。
In this paper, a new encryption algorithm based on chaotic map is presented. The ASCII coded plaintexts are encrypted bit by bit and the output sequence of the chaotic map falls more frequently into any kind of-intervals. Thus the number of iterations required for any plaintext alphabet is greatly decreased. On the other hand, a new random number is adopted in this method to represent the different encryption procedures. Even the same plaintexts are encrypted as different ciphertexts in different encryption procedures. The experimental results indicate that the security and efficiency can be all improved by using this method.
出处
《信息安全与通信保密》
2008年第3期62-63,共2页
Information Security and Communications Privacy
基金
中山大学青年教师科研启动基金资助项目
基金编号:1131159
关键词
混沌
明文
密文
chaos
plaintext
ciphertext
