Watermarking Protocol for Broadcast Monitoring
Li Liu, Xiaoju Li · 2010
Digital watermarks have recently been proposed for the purpose of broadcast monitoring and copyright protection for multimedia content. In broadcast monitoring, an advertiser wants to inserts a unique watermark into the advertisement before it is sent to the broadcast station. In view of the fraud between advertiser and broadcast station, authentication of a video clip and an embedding watermark find application in the detected process of broadcast monitoring. For the problem of double authentication, a video watermarking protocol for broadcast monitoring is proposed. In the proposed protocol, the generation and embedding of watermark are based on the homomorphic public-key cryptosystems. Furthermore, the watermark, the advertisement and the transaction are bound according to the embedding of a unique watermark. It can not only deal with the customer's right problem and unbinding problem, but also avoid the fraud between advertiser and broadcast station.