摘要
为了有效解决图像加密算法存在的复杂度高、安全性差等问题,提出了一种基于混沌映射的快速图像加密算法。该算法运用两种不同的混沌映射,结合明文图像本身特征,快速地实现了对明文图像的安全加密。仿真实验表明:无论是灰度图像还是彩色图像,文中提出的图像加密算法,均能满足速度快、效果好的加密要求,特别是大批量图像的加密任务。对于一副256*256的Lena图像来说,加密时间仅0.057s,解密时间0.060s。
In order to effectively solve problem of image encryption algorithm,including high complexity and poor security,a fast image encryption algorithm based on chaotic mapping is presented. The algorithm can quickly implement plain image encryption by using two different chaotic mappings and combining with feature of plain image itself. Simulation experiments show that the proposed image encryption algorithm can meet high speed and good encryption requirement to both color or gray image,it is especially suitable for encryption of large quantity images. To a Lena image with size of 256＊ 256,encryption time is only 0. 057 s,decryption time is 0. 060 s.
出处
《火控雷达技术》
2017年第3期34-38,42,共6页
Fire Control Radar Technology
基金
陕西省自然科学基金(2015JM8322)
关键词
混沌映射
图像加密
chaotic mapping
image encryption
