Efficient video encryption scheme based on advanced video coding
Efficient video encryption scheme based on advanced video coding
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DOI：
10.1007/s11042-007-0150-7
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发表时间：
2008-05
影响因子：
3.6
通讯作者：
Shiguo Lian;Jinsheng Sun;Guangjie Liu;Zhiquan Wang
中科院分区：
文献类型：
--
作者：
Shiguo Lian;Jinsheng Sun;Guangjie Liu;Zhiquan Wang
提出并分析了一种不同于MPEG1/2视频加密的高级视频编码(AVC)视频加密方案。该方案采用保持长度加密算法(LKE)对帧内预测模式和运动矢量差进行加密以保持格式一致性，并利用剩余数据加密算法(RDE)对宏块的剩余数据进行加密以保持较低的代价。此外，为了保持对传输错误的健壮性，提出了一种密钥分配方案，将子密钥独立地分配给不同的帧或片。详细分析了该加密方案的安全性、时间效率和错误稳健性。实验结果表明，该加密方案保持文件格式不变，对替换攻击安全，计算效率高，对某些传输错误具有较强的鲁棒性。这些特性使其成为安全IPTV、安全视频会议或移动/无线多媒体等实时应用的合适选择。
A video encryption scheme combining with advanced video coding (AVC) is presented and analyzed in this paper, which is different from the ones used in MPEG1/2 video encryption. In the proposed scheme, the intra-prediction mode and motion vector difference are encrypted with the length-kept encryption algorithm (LKE) in order to keep the format compliance, and the residue data of the macroblocks are encrypted with the residue data encryption algorithm (RDE) in order to keep low cost. Additionally, a key distribution scheme is proposed to keep the robustness to transmission errors, which assigns sub-keys to different frames or slices independently. The encryption scheme’s security, time efficiency and error robustness are analyzed in detail. Experimental results show that the encryption scheme keeps file format unchanged, is secure against replacement attacks, is efficient in computing, and is robust to some transmission errors. These properties make it a suitable choice for real-time applications, such as secure IPTV, secure videoconference or mobile/wireless multimedia, etc.