【摘要】 介绍了非线性动力学系统的 L ogistic映射形成混沌序列的方法 ,提出了一种新的置乱方法 :魔方变换。设计了基于魔方变换的图像加密 /解密算法 ,首先由 L ogistic映射生成得到自然数混沌序列 ,以此序列为参数对图像矩阵进行魔方置乱后得到加密图像 ,逆过程即是解密算法。实验结果证明了算法的有效性更多还原

【Abstract】 The method of creating chaotic sequence using logistic mapping in non\|linear dynamics systems is introduced. A new method for digital image scrambling transformation, namely Magic Cube Transformation, is proposed. An image encrypting and decrypting algorithm based on Magic Cube Transformation is designed. Firstly, a natural chaotic sequence is created with logistic mapping. The image matrix is transformed with this chaotic sequence, using the Magic Cube Transformation. Then an encrypted image is obtained. The reverse process of encryption is the decrypting algorithm. The experimental results indicate the efficiency of the method.更多还原