论文标题
密码分析图像加密算法由2D滞后复合物logistic映射支撑
Cryptanalyzing an Image Encryption Algorithm Underpinned by 2D Lag-Complex Logistic Map
论文作者
论文摘要
本文使用2D Lag-Complex Logistic Map（LCLM）分析了图像加密算法的安全性能，该图将其作为伪随机数生成器，并以平面图像的所有像素值作为其初始值的所有像素值来控制基本的加密操作的随机组合。但是，多个因素使控制加密过程的最终伪随机序列对于不同的平淡图像可能相同。基于这一点，我们通过使用分歧和征服的策略来攻击六个加密步骤，提出了选择的plaintext攻击。使用2D-LCLM的陷阱，将所需的普通图像的数量进一步减少至$ 5 \ cdot \ log_2（mn）+95 $，其中$ \ sathit {mn} $是普通图像的像素的数量。
This paper analyzes security performance of an image encryption algorithm using 2D lag-complex Logistic map (LCLM), which adopts it as a pseudo-random number generator, and uses the sum of all pixel values of the plain-image as its initial value to control the random combination of the basic encryption operations. However, multiple factors make the final pseudo-random sequences controlling the encryption process may be the same for different plain-images. Based on this point, we proposed a chosen-plaintext attack by attacking the six encryption steps with a strategy of divide and conquer. Using the pitfalls of 2D-LCLM, the number of required chosen plain-images is further reduced to $5\cdot\log_2(MN)+95$, where $\mathit{MN}$ is the number of pixels of the plain-image.
