应用混沌映射索引和DNA编码的图像加密技术

Image encryption technology applied chaotic maps index and DNA coding

为更加安全、有效地利用网络传输数字图像,采用混沌映射索引和DNA(脱氧核糖核酸)互补编码相结合的方法,提出一种安全、可靠、高效的数字图像加密技术。利用Logistic映射产生的索引对图像进行像素的置乱;利用DNA编码对像素进行一定迭代次数的碱基对互补替换,其中迭代次数由Chebyshev映射产生;得到加密图像。实验结果表明,该技术基本满足密钥量大、能够抵御统计性分析和攻击性操作等图像加密技术的要求。

To transfer the digital image more effective and safe via networks,a safe,reliable,effective digital image encryption technology was presented and chaotic maps index was combined with DNA（deoxyribonucleic acid）complementary coding in the technology.First,the pixels were permuted using the index generated by Logistic map.Then,the base pairs were replaced under the complementary rules by using DNA coding in a certain number of iterations which were based on Chebyshev map.Finally,the encryption image was received.Experimental results indicate that the technology can satisfy the image encryption technology requirements of a large amount of keys,withstanding statistical analysis and attack operation.