一种有效加密MP4文件的方法

AN EFFECTIVE METHOD FOR ENCRYPTING MP4 FILE

随着MP4文件的流行和在互联网上越来越多的应用,MP4文件的版权保护和安全保密问题也日益成为人们关注的焦点。传统的加密方法需要加密MP4文件中所有的视频帧数据,增加了加密所需的时间,同时也降低了加密的效率。针对MP4文件视频帧的结构特点,提出一种更加有效地加密MP4文件的方法。该方法在加密过程中只对视频数据中关键帧的最重要信息进行加密,从而达到有效加密MP4文件的目的,同时给出了实验仿真程序。实验结果表明该方法可以有效地减少加密的时间,提高加密的效率。

With the prevalence of the MP4 files and the increasing applications in internet, the copyright protection and security issue of MP4 file become the focus which attracts growing attention by the people. Traditional encryption methods need to encrypt all video frame data in MP4 files, this needs more encryption time and also reduces the eneryption efficiency. Therefore, based on the structure of the video frame data in MP4 file, we propose a more effective method for encrypting MP4 file. This method only encrypts the most important information part of key video frame data in encryption process, and reaches the goal of effectively encrypting the MP4 files, an experimental emulator is also provided at the same tile. Experimental result shows that this method can effectively reduce the encryption time and improve the encryption efficiency.