基于六维记忆混乱系统的多层密钥图像加密的研究
Xiaobin Zhang1, Yaxuan Chai1, Shitao Xiang1
1School of Electrical and Electronic Engineering, Wuhan Polytechnic University, Wuhan 430048, China.
Entropy (Basel, Switzerland)
|November 26, 2025
概括
这项研究引入了一个新的图像加密算法,使用一个六维的memristive混乱系统. 这种新的方法提高了数字图像对攻击的安全性,具有高的有效性和效率.
科学领域:
- 计算机科学 计算机科学
- 密码学 密码学 密码学
- 应用数学 应用数学 应用数学
背景情况:
- 数字图像安全是一个日益关注的问题.
- 现有的加密方法在稳定性和效率方面面临挑战.
- 简单的混乱系统为复杂,安全的加密应用提供了潜力.
研究的目的:
- 提出一种新的图像加密算法,以提高数字图像安全性.
- 为了加密目的,利用一个六维的记忆混乱系统.
- 评估算法的有效性和对攻击的抵抗力.
主要方法:
- 使用安全哈希算法256 (SHA-256) 进行初始动态密钥生成.
- 集成的Zigzag编码,混乱的索引编码和扩散操作.
- 采用六维记忆混乱系统用于伪随机序列生成和动态键更新.
主要成果:
- 获得了高信息 (7.9979) 和186.6875.5的千平方统计.
- 通过平均NPCR (99.6111%) 和UACI (33.4643%) 显示出强烈的扩散.
- 展示了高效的加密时间 (0.342s对于256x256图像).
结论:
- 拟议的图像加密算法在保护数字图像方面非常有效.
- 该算法对传统的加密分析攻击有很强的抵抗力.
- 简单的混乱系统和先进的编码/扩散技术的结合提供了强大的安全性.
相关概念视频
01:22Multi-input and Multi-variable systems
376
Cruise control systems in cars are designed as multi-input systems to maintain a driver's desired speed while compensating for external disturbances such as changes in terrain. The block diagram for a cruise control system typically includes two main inputs: the desired speed set by the driver and any external disturbances, such as the incline of the road. By adjusting the engine throttle, the system maintains the vehicle's speed as close to the desired value as possible.
In the absence of...
In the absence of...
376
01:20Mason's Rule
993
Mason's rule is a powerful tool in control systems and signal processing. It simplifies the calculation of transfer functions from signal-flow graphs. This method leverages various elements, including loop gains, forward-path gains, and non-touching loops, to determine the transfer function efficiently.
Loop gain is determined by identifying and tracing a path from a node back to itself. This involves computing the product of branch gains along the loop. Each loop's gain is crucial for further...
Loop gain is determined by identifying and tracing a path from a node back to itself. This involves computing the product of branch gains along the loop. Each loop's gain is crucial for further...
993