摘要
针对一种改进的超混沌图像加密算法进行攻击。该算法利用超混沌系统对像素矩阵的初等变换实现像素置乱,并将像素置乱后的矩阵与超混沌系统的不同组合进行异或运算实现图像扩散。由于该算法采用易被攻击的矩阵初等变换和异或运算的加密措施,使其很难抵抗各种攻击。选择三个各具特点的明文矩阵,在未知加密密钥的前提下对该算法进行选择明文攻击。仿真结果表明对该算法实现了选择明文攻击。
This paper introduced chosen plaintext attack. The target of the attack was an image encryption algorithm based on a hyper chaotic system whose disadvantages were vulnerable encryption methods of choosing elementary transformation and ex- clusive-or operation. Attack algorithm in which three characteristic plaintext matrices were given and the encryption key was unknown was utilized to attack the target algorithm. According to the result, chosen plaintext attack can decode this algorithm.
出处
《计算机应用研究》
CSCD
北大核心
2013年第2期510-512,共3页
Application Research of Computers
基金
湖南省教育厅科研项目(10C0579
09C296)
衡阳市科技计划项目(2010KJ31
2011KG68)
湖南工学院重点科研项目(HY10001)
关键词
超混沌系统
图像加密算法
选择明文攻击
hyper-chaotic system
image encryption algorithm
chosen plaintext attack
