摘要
为保证图像传输过程中的安全性,针对传统混沌映射加密算法存在的缺陷,提出一个基于改进混沌映射的图像加密算法。采用雅克比椭圆映射对初始密钥进行迭代,产生新的密钥;采用位置集合置乱方法对该密钥进行处理,得到一个位置集合,利用该位置集合对明文图像进行加密,得到密文图像;采用仿真实验测试算法的性能。仿真结果表明,该算法可以获得较好图像加密效果,具有安全性高、密钥空间大等优点。
To ensure the safety of image transmission,an image encryption algorithm based on improved chaotic map was pro-posed to solve the defects in traditional chaotic map encryption algorithms.The initial key was modified using Jacobean elliptic chaotic map to produce new key,and the key was processed using position method and was used to encrypt initial image.The simulation experiments were carried out to test the performance of algorithm.The results show that the proposed algorithm can obtain good encryption results and it has high security,huge key space.
出处
《计算机工程与设计》
北大核心
2015年第5期1187-1191,共5页
Computer Engineering and Design
基金
甘肃教育厅2013年度科研课题基金项目(G201328023)
关键词
图像加密
雅克比椭圆映射
信息安全
混沌序列
混沌映射
image encryption
Jacobian elliptic chaotic map
information security
chaotic series
chaotic map
