摘要
为了提高图像加密算法的运行速度,同时兼顾算法的安全性,提出了一种自适应混沌的并行双向图像加密算法。算法对图像进行分组并行加密,用分组内的元素对两个一维混沌映射的参数及初始值进行扰动,并将生成的两个混沌序列相异或得到加密序列。采用正反双向加密,在正向加密后使用分组最后一个元素实现分组间扩散,最后通过反向加密将最后一个元素的变化扩散至整个分组。实验结果表明,算法执行速度快,且安全性高。
In order to improve the running speed of image encryption algorithm and consider the security of the algorithm, a parallel bidirectional image encryption algorithm based on self-adaptive chaos is proposed. The grouping and parallel encryp-tion for images is executed by this algorithm. Two one-dimensional chaotic maping parameters and original value are disturbed by elements in image groups. The encryption sequence is generated through two chaotic sequences’XOR operation. The bidirec-tional encryption is adopted in the algorithm. Diffusion between groups is implemented by using the last element of every group after forward encryption. The change of the last element is spread to the whole group through reverse encryption. The experimen-tal results show that the algorithm encrypts fast,and has high safety.
出处
《现代电子技术》
2014年第8期119-122,共4页
Modern Electronics Technique
基金
国家自然科学基金资助项目(11264016)
江西省教育厅科研基金(GJJ12172)
江西师范大学科研基金(4554)
关键词
并行加密
自适应混沌
双向加密
图像加密算法
parallel encryption
self-adaptive chaos
bidirectional encryption
image encryption algorithm
