A Buyer–Seller Watermarking Protocol Based on Secure Embedding
Stefan Katzenbeisser, Aweke Negash Lemma, Mehmet Utku Celik, Michiel van der Veen, Martijn Maas · IEEE Transactions on Information Forensics and Security · 2008
In a forensic watermarking architecture, a buyer-seller protocol protects the watermark secrets from the buyer and prevents false infringement accusations by the seller. Existing protocols encrypt the watermark and the content with a homomorphic public-key cipher and perform embedding under encryption. When used for multimedia data, these protocols create a large computation and bandwidth overhead. In this correspondence, we show that the same functionality can be achieved efficiently using recently proposed secure watermark embedding algorithms.