数字签名在播控系统中的应用

The Application of Digital Signature in Broadcasting System

随着计算机网络技术的普及,媒体文件的信息安全显得越来越重要。怎样保证媒体文件经过存储保存和网络传输,在最后的播出环节没有被修改或被替换,对节目的安全播出十分重要。本文通过对计算机文件进行分析,对计算机文件中媒体文件的一些特征提取信息,并对该信息进行加密形成对应的签名文件。在播出的各个环节中通过签名文件和媒体文件的信息是否匹配,来判断媒体文件是否为终审的内容,该方法将会大大地提高了节目内容的安全,确保安全播出。

With the popularity of broadcasting system based on computer network technology, media information security appears more important. After files are stored and transmitted, on the final step of broadcasting process how to guarantee media files without any modification or replacement is obviously crucial to broadcasting security. We extract characteristic information from media files through computer files analysis, and then encrypt that intormation to a responding signature file. In the whole broadcasting process, media files＇ authenticity is judged by matching signature files and media files. It highly improves the broadcasting security.