摘要
为保证视频传输过程中的安全性,提出了一种基于超混沌与RC4相结合的视频加密算法。利用四维超混沌映射产生4个伪随机序列,将其分别作为RC4算法的种子密钥,实现DC系数、非零AC系数符号和运动矢量MV符号的联合加密。仿真加密算法的同时对算法的加密效果和安全性进行了分析,实验结果表明,该算法具有较大的密钥空间、较高的密钥敏感性以及较高的安全性。
In view of the safety of video transmission,a novel video encryption algorithm base on hyper-chaos system and RC4 is put forward in this paper.Four chaotic sequences of hyper-chaotic map are used as the key of RC4 algorithm to encrypt DC coefficients,nonzero AC coefficients symbols and motion vector symbols.The experimental results prove that the algorithm has a larger key space,high sensitivity and high key security.
出处
《电视技术》
北大核心
2015年第11期15-18,88,共5页
Video Engineering
