A new and efficient buyer-seller digital Watermarking protocol using identity based technique for copyright protection

Digital watermarking is a promising technology to embed information as unperceivable signals in digital contents for copyright protection. Digital Watermarking plays a very important role in E-business. Buyer-seller watermarking protocol is fundamentally applied to continue the digital rights of both the buyer and the seller. In this paper, we propose a new and efficient buyer-seller digital watermarking protocol using Identity based technique for copyright protection which encountered various previously unpublished problem in J. Zhang et al. (2006)´s protocol. We ensure that by identifying these problems, mistakes can be avoided in future for implementing buyer-seller watermarking protocol. Our protocol uses Id-based public key cryptography to solve the problem of multiple claims of ownership. Hence, it examines the ownership of digital content. We have claimed that our suggested protocol is secure and flexible and turns over more protection from previous watermarking protocols, and suitable for any practical buyer seller watermarking scheme.