摘要
论文提出了一种新的基于包括Logistic映射模型和混合光学双稳模型的复合混沌系统的图像加密算法。随着对外部密钥的映射,将选择相应的混沌动力系统,产生出混沌序列,对原始图像加密掩盖。计算机仿真的结果表明,混沌序列对外部密钥很敏感。该算法具有良好的运算效率,加密图像具有良好的统计特性。
An image encryption algorithm based on mixed chaotic dynamic systems is proposed. With the map of the external keys, the initial conditions of the mixed chaotic dynamic systems are acquired. Subsequently the chaotic signals are generated, then the plain image is encrypted by masking the chaotic signals. The result of the simulation and analysis shows that the chaotic signals are greatly sensitive to the key, Moreover, a better security performance on the basis of statistical analysis is obtained.
出处
《信息安全与通信保密》
2007年第5期146-148,共3页
Information Security and Communications Privacy
关键词
复合混沌系统
图像加密
外部密钥
mixed chaotic dynamic systems
image encryption
external keys
