改进的DNA图像加密算法

针对数字图像加密算法复杂度高、安全性较差问题,通过对相关算法进行研究,提出一种DNA序列与混沌系统相结合的新型算法。该算法突破了先置乱图像像素后改变像素值的方式,利用传统DNA密码学中的并行性和信息密度的特性,对数字图像进行处理,然后结合混沌序列对其进行加密。仿真结果表明,较其他算法相比,不仅具有安全性高,密钥空间大,而且对穷举攻击、统计攻击、差分攻击有良好的鲁棒性。

DNA Image Encryption Algorithm Improvement

This paper presents a novel image encryption method based on chaos theory and DNA computing is proposed. The algorithm breaks through the method that scrambling the image pixel to changing its value, DNA cryp-tography using traditional parallelism and information density characteristics of digital image processing, and then combined with chaotic sequence to encrypt, which solves the problems such as scheme complexity, poor security in the digital image encryption process. Simulation results demonstrate that these proposed algorithms can get good en-combines effect and have a wide secret key＆#39;s space, strong sensitive to secret key, the ability of resisting exhaustive attack and statistic attack.