摘要
随着网络技术和多媒体技术的快速发展,各种视频服务日益普及,同时对安全的要求也越来越迫切。为此,针对目前最新的视频压缩标准H.264的特点,文中选择采用混沌流密码有选择地对视频编码中起关键作用的数据进行加密,从而实现了帧内预测模式IPM、运动向量差值MVD和DCT系数的联合加密。理论分析和实验结果表明该算法能很好地降低计算复杂度,提高加密效率,取得了很好的加密效果。
With the rapid development of network technology and multimedia technology, the kinds of video services are growing popularity, at the same time safety requirements are more and more urgent. So, for the latest video compression standard H.264 characteristics, we choose to use chaotic stream cipher to encrypt the data play a key role in the video coding, thus achieving the intravprediction mode IPM, the motion vector differenceMVD and the DCT coefficients jointly encrypted. The theoretical analysis and experimental results show that the proposed algorithm can well reduce the computational complexity, improve encryption efficiency, good encryption effect.
出处
《电子设计工程》
2013年第11期109-111,115,共4页
Electronic Design Engineering
