基于logistic混沌序列的彩色图像加密方法

With the rapid development of multimedia and network technologies, the storage and transmitting of the confidential digital image through network has been paid much attention. Image encryption is different from text encryption due to the intrinsic properties of images such as bulky data capacity, high redundancy and strong correlation among image pixels. Therefore,the conventional cryptographic algorithm may not be a good candidate. Chaotic maps have many desirable properties such as pseudo-randomness, ergodicity, high sensitivity to initial conditions, That make it particularly suitable for image encryption. The image encryption technologies based on chaos have been studied in this dissertation, To begin, research developments of the digital image encryption. Then, the knowledge about encryption based on chaos is introduced. Based on this, The image encryption algorithm based on chaos is advanced. And through the simulation experiment to this method for the safety analysis.