摘要
为了有效解决当前已有方法未能考虑图像加密算法抗差分性不好,使图像加密质量下降以及安全性能差的问题,结合区块链技术,设计并提出了一种基于区块链技术的双混沌可识篡改图像加密方法。该方法采用Kawakami超混沌形成超混沌序列进行图像像素置换;结合区块链技术,形成三维Bao系统的初始值;利用明文像素值和Bao系统形成加密序列,通过加密序列进行像素替代以及扩散,有效实现了双混沌可识篡改图像的加密。仿真实验结果表明,本文方法能够有效提升图像加密质量,提升加密效果。
Because the existing methods fail to consider the problem of poor anti difference,the quality of image encryption is reduced and the security performance is poor.In order to effectively solve the above problems,combined with the blockchain technology,a dual chaotic recognizable tamper image encryption method based on blockchain technology is designed and proposed.Kawakami hyperchaos are used to form hyperchaotic sequences for image pixel replacement.Combined with blockchain technology,the initial value of 3D Bao system is formed.The encryption sequence is formed by using plaintext pixel value and Bao system.The encryption sequence is replaced and diffused by the encryption sequence,which effectively realizes the encryption of double chaotic recognizable tamper image.Simulation results show that the proposed method can effectively improve the quality of image encryption and enhance the encryption effect.
作者
沈淑涛
尼玛扎西
SHEN Shu-tao;NIMA Zha-xi(School of Information Science and Technology,Tibet University,Lhasa 850012,China)
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2021年第3期1055-1059,共5页
Journal of Jilin University:Engineering and Technology Edition
基金
国家重点研发计划项目(2017YFB1402200)
西藏自治区重点研发计划项目(XZ201703-GC-09)
西藏自治区自然科学基金项目(XZ2019ZRG-24)。
关键词
计算机应用
区块链技术
双混沌
可识篡改图像
明文像素值
computer application
blockchain technology
double chaos
recognizable tampered image
plaintext pixel value
