摘要
随着信息技术的高速发展,现有的图像加密算法已经无法满足图像数据加密的需求。本文基于图像加密现状和混沌序列密码技术,在双混沌系统伪随机比特发生器技术基础上,提出了一种基于改进CCS-PRBG的图像加密算法,首先对比特位平面进行分解,再对每个比特位平面进行置乱,然后对每个比特位平面进行流密码加密最后合并加密后的比特位平面得到加密图像。实验结果表明,本文提出的基于改进CCS-PRBG的图像加密算法安全性能良好,值得推广使用。
With the rapid development of modern information technology, the existing image encryption algorithm has been unable to meet the needs of the image data encryption.Based on the current situation of image encryption and chaotic sequence code technology, and on the technology of bit generator of double chaos system pseudo random, this paper puts forward a kind of image encryption algorithm based on improved CCS- PRBG, first it decomposes the bit plane, then scrambles for each bit plane, then it carries out the stream cipher encryption for each bit plane and finally merges them, thus we can get encryption image from the encrypted bit plane.The experimental results show that the proposed image encryption algorithm based on improved CCS-PRBG is good in safety performance, and it is worthy to be popularized.
出处
《科技通报》
北大核心
2014年第3期195-198,202,共5页
Bulletin of Science and Technology
