一种基于超混沌序列的图像加密技术

本文给出一种构造超混沌序列的方法，并把该混沌序列应用于数字图像加密。该方法基于n次有理Bezier曲线，生成的混沌序列具有很好的伪随机性。通过对混沌序列的非线性离散化处理，可以生成相应的整数型伪随机序列。利用该整数型混沌序列对数字图像进行加密，使得加密的效果更好。其中，加密的混合参数也可用这里生成的混沌序列代替。数字实验表明，该算法生成的混沌序列对数字图像加密效果良好，而且该加密算法简单易行，具有较好的安全性。

An Image Encryption Algorithm Based on Hyperchaotic Sequences

The paper gives an algorithm for generating extended chaotic sequences, and the extended chaotic sequences are applied to digital image encryption- The algorithm is based on the n-order rational Bezier curve, and the generated se- quences feature good randomization. With a nonlinear discretization of  the sequences, we can get the relevant integer pseudorandom sequences. The experimental results indicate the algorithm has good encryption effect iypting and deerypting digital images.