一种新颖的基于混沌映像格子的图像保密通信方案  

A Novel Image Communication Scheme Based on Chaotic Map Lattices

作　　者：游明英[1] 彭军[1,2] 金尚柱[1] 张伟[3] 刘海玲[1] 

机构地区：[1]重庆科技学院电子信息工程学院,重庆400050 [2]美国加州州立大学计算机科学系,美国CA95819 [3]重庆教育学院计算机与现代教育技术系,重庆400067

出　　处：《计算机科学》2008年第5期260-262,共3页Computer Science

基　　金：重庆市教委科学技术研究项目基金(KJ051402，KJ051501．KJ061409)

摘　　要：基于混沌映像格子(CML)提出了一种新颖的图像保密通信方案。发送方利用CML快速产生二值时空混沌序列,并将其与原始图像进行异或加密处理.经通信双方同步后,接收方即可解密出原始图像。由于混沌序列时CML中的耦合系数、驱动序列初值等比较敏感,增加了序列抗攻击能力。数值实验结果表明本方案是可行的.并对系统密钥空间、密钥敏感性等密码学特性进行了分析。Based on chaotic map lattices （CML）, a novel image secure communication scheme is proposed. In this scheme, the spatiotemporal binary sequences are rapidly generated and will be used to encrypt source image by exploiting bit-wise xor operation. Once the synchronization of the communication between the sender and receiver is satisfied, the encrypted image then can be correctly recovered into source image. As the chaotic sequences are very sensitive to the coupled parameter of CML and the initial value of the driven system, the capability of the scheme against the cryp-tographic attack is enhanced greatly. The results of computer numerical stimulation indicate the scheme proposed in this paper is feasible. Finally, we analyze some cryptography properties of the scheme such as the key space and thesensitivity ot the encrypted image with respect to the secret key.

关 键 词：混沌映像格子 图像加密 保密通信 通信方案 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] TN918[自动化与计算机技术—计算机科学与技术]