摘要
为了增强对彩色图像的有效保护,通过Lyapunov指数谱和分岔图分析了一种四维磁控忆阻模型的多稳态特性,并利用Python编程环境实现了基于该系统的彩色图像加密。像素直方图、相邻像素相关性、抗攻击能力和密钥敏感性等分析表明,忆阻系统混沌态的加密性能要优于其周期态,该特性的分析为选择适合的密钥提供了方法和支持。
In order to enhance the effective protection of color images,the multi-steady characteristics of a four-dimensional magnetron memristive model is analyzed by Lyapunov exponent spectrum and bifurcation diagrams.The color image encryption based on this system is implemented using Python programming.The analysis of the pixel histogram,the correlation between adjacent pixels,the anti-attack capability and the key sensitivity shows that the encryption performance of the chaotic state of the memristive system is superior to its periodic state.The analysis of the characteristic provides a method and support for selecting the appropriate key.
作者
施浩楠
崔昊
闵富红
汤丹慧
管浩浩
SHI Haonan;CUI Hao;MIN Fuhong;TANG Danhui;GUAN Haohao(School of NARI Electrical and Automation Engineering,Nanjing Normal University,Nanjing 210046,China)
出处
《复杂系统与复杂性科学》
EI
CSCD
2018年第3期82-88,共7页
Complex Systems and Complexity Science
基金
国家级大学生创新创业训练计划项目(201710319015)
关键词
忆阻系统
多稳态特性
图像加密
PYTHON语言
memristive system
multi-steady characteristics
image encryption
python language
