【作者】 庞建新； 朱智超； 张倩； 张荣；

【Author】 Pang Jianxin, Zhu Zhichao, Zhang Qian,Zhang Rong(EEIS,USTC,Hefei, Anhui ,230025;

【机构】 中国科学技术大学电子工程和信息科学系；

【摘要】 本文利用视频压缩标准H.264的特点,提出了一种视频加密方法,分别在运动矢量、DCT系数和熵编码模块进行加密。运动矢量加密利用误差积累实现加密,DCT系数加密是在编码传输前对DCT系数进行加密,熵编码加密利用熵编码码表进行加密达到加密效果。本文所有算法均在H.264参考软件JM(版本7.3)软件平台上实现,结果显示了上述方法有很好的加密效果,并且对视频的压缩效果影响很小。本文还分析了算法的优势和应用前景。更多还原

【Abstract】 A novel video encryption method is proposed which makes full use of the characteristics of the standard of video compression, H.264. In the proposed method motion vectors encrypt information is utilized to encrypt information within the motion vectors. For the coefficients of DCT, encryption is conducted before data transmission. Finally, entropy coding table is used to perform encryption. Experimental results based on the JM (version 7.3) reference software show that the method has high encryption efficiency without significantly negative effect on video compression. It is analyzed that the advantages and possibilities of the algorithm to be employed in future in this paper.更多还原