基于三维超混沌系统的彩色图像加密算法

针对彩色图像的存储特性,为了改进彩色图像加密算法的安全性和效率,提出了一种基于三维超混沌系统的彩色图像加密算法.该算法利用改进的三维超混沌系统产生混沌序列,采用复合加密算法实现彩色图像在空域上的加密.使用MATALAB7.0进行仿真实验.理论分析和实验表明,该算法具有良好的保密性和加密效果.若进一步降低运算量,该算法可对诸如军事卫星图片、商业机密图纸、远程私人病历等需要保密通信的场合有广泛的应用前景.

Color Image Encryption Algorithm Based on Three-Dimension Chaotic System

In view of the storage characteristic of color images,in order to extend the effect and security of image encryption algorithm. A color image encryption algorithm based on the three-dimension chaotic system was proposed. Firstly, the chaotic sequence were adopted by the three-dimension chaotic system. Then a color image was encrypted in space domain by using composite encryption algorithm. Using MATALAB7.0 carried out simulation. Theoretical analysis and simulated experiment show that, algorithm guarantees the security of the encryption effectively and excellent effect of encryption. If reduces the computation, the algorithm can be used widely in military satellite images, trade secret drawings, long-range private medical that wanted to be kept confidential communications.