A novel color image encryption scheme using fractional-order hyperchaotic system and DNA sequence operations

• 来源期刊: 中国物理B（英文版）
• 关键词: color image encryption DNA sequence operation fractional calculus piecewise-linear hyperchaotic system
• 年，卷（期）: 2017,（10）
• 页码范围: 98-106
• 页数: 9页
• 语种: 英文
• DOI: 10.1088/1674-1056/26/10/100504

摘要

In this paper,Adomian decomposition method (ADM) with high accuracy and fast convergence is introduced to solve the fractional-order piecewise-linear (PWL) hyperchaotic system.Based on the obtained hyperchaotic sequences,a novel color image encryption algorithm is proposed by employing a hybrid model of bidirectional circular permutation and DNA masking.In this scheme,the pixel positions of image are scrambled by circular permutation,and the pixel values are substituted by DNA sequence operations.In the DNA sequence operations,addition and substraction operations are performed according to traditional addition and subtraction in the binary,and two rounds of addition rules are used to encrypt the pixel values.The simulation results and security analysis show that the hyperchaotic map is suitable for image encryption,and the proposed encryption algorithm has good encryption effect and strong key sensitivity.It can resist brute-force attack,statistical attack,differential attack,known-plaintext,and chosen-plaintext attacks.