期刊论文

Self-adaptive Image Encryption Algorithm Combining Chaotic Map with DNA Computing

中文

小型微型计算机系统

1000-1220

2020

41

9

1959-1965

10.3969/j.issn.1000-1220.2020.09.027

本校为其他机构

本文提出了一种基于二维Logistic混沌映射与DNA计算的自适应图像加密方案.整个加密过程包括扩散和置乱两个阶段.在扩散阶段,本文首先利用二维Logistic混沌系统产生伪随机序列并生成掩码图像,然后充分运用DNA编码规则对明文图像和掩码图像进行随机编码,通过DNA异或运算得到扩散编码图像.在置乱阶段,为抵御差分攻击、选择明文攻击等,需建立明文图像与密文图像紧密的关联.该算法采用一种自适应的置乱结构,以扩散编码图像的DNA碱基数量为种子代入至二维Logistic混沌系统生成伪随机序列,以此序列确定图像置乱的顺序.将置乱后的编码图像解码得到密文图像,实现图像加密.模拟实验从直方图分析、相关性分...

The paper proposes a self-adaptive image encryption algorithm based on two-dimensional Logistic chaotic map and DNA computing. The encryption process consists of diffusion and permutation. In diffusion stage,the paper firstly applies two-dimensional Logistic chaotic system to generate a pseudo-random sequence and get a mask image. And then the DNA coding rules are used to encode the plain-image and the mask image. DNA XOR operation is executed on the plain-image and the mask image to get a diffused coded-image. In permutation stage,In order to resist differential attack and chosen-plaintext at...