基于猫映射和DNA编码的图像加密算法  

Image Encryption Algorithm Based on Cat Mapping and DNA Coding

作　　者：房东鑫 张健[1] 

机构地区：[1]东北林业大学信息与计算机工程学院,哈尔滨150040

出　　处：《计算机工程》2014年第12期89-93,共5页Computer Engineering

基　　金：中央高校基本科研业务费专项基金资助项目(DL13CB04);黑龙江省自然科学基金资助项目(LC2012C33);黑龙江省教育厅科学技术研究基金资助项目(12533006)

摘　　要：为实现更有效、安全的网络数字图像传输,提出一种基于猫映射和DNA编码的图像加密算法。利用广义猫映射对图像像素进行置乱,运用DNA编码对像素进行一定迭代次数的碱基对互补替换,其中迭代次数由Chebyshev映射产生,最后得到加密图像。实验和安全分析结果表明,该算法不仅可以达到较好的加密效果,而且有足够大的密钥空间抵制一般性攻击,可满足抵御统计性分析及攻击性操作等图像加密算法的要求。In order to realize more effective and safe network transmission of the digital images, a safe, reliable, effective digital image encryption algorithm is presented which combines cat mapping with Deoxyribonucleic Acid （ DNA ） coding. The pixels are permuted using generalized cat mapping. The base pairs are replaced under the complementary rules by using DNA coding in a certain number of iterations which are based on Chebyshev chaotic mapping. The encryption image is received. Experimental results and security analysis show that the algorithm not only has good encryption effect,but also has the key space which is big enough to resist the common attack. It can satisfy the image encryption algorithm requirements of standing statistical analysis and attack operation.

关 键 词：DNA编码 猫映射 图像加密 CHEBYSHEV映射 DNA序列 混沌映射 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]