摘要
为了解决现有混沌映射模型的混沌空间小及混沌能力弱的问题,首先通过耦合二维 Henon混沌映射模型和Sine混沌映射模型,设计了一种新的三维混沌映射模型.其次,针对密钥重复使用会降低加密系统安全性的问题,使用 Chebyshev 映射,结合明文图像,设计出一种新的密钥生成方法.最后,通过本文设计的三维混沌映射模型以及密钥生成方法,提出了一种彩色图像加密方法,并对此方法进行了仿真实验,结果表明,该方法能够安全有效地进行图像加密,保护图像信息安全.
Abstract
Aiming at the problems of small chaotic space and weak chaotic ability of existing chaotic mapping models,a new three-dimensional chaotic mapping model is designed by coupling two-dimensional Henon chaotic mapping model and Sine chaotic mapping model.Aiming at the problem that the security of encryption system will be reduced if the key is reused,this paper designs a new key gen-eration method using Chebyshev mapping and plaintext image.Using the 3 D chaotic mapping and key generation method designed in this paper,a color image encryption method is proposed.The results show that the method can encrypt images safely and effectively and protect the security of image infor-mation.
国家科技期刊平台
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