On Efficient and Secure Modified Buyer Seller Watermarking Protocol

Abstract

The rapid growth of internet and e commerce needs a copyright protection mechanism for multimedia information The advancement in internet and multimedia technologies consists huge amount of multimedia data in the form of audio video and images is being practiced in many fields like medical fields satellite information digital forensics surveillance systems etc This has contributed to higher demand for multimedia information like images with high optical quality This protocol is basically used to extend the digital rights of both the purchaser and the vendor The protocol uses digital watermarking and cryptography techniques to protect digital rights and digital copyrights for purchaser and the vendor during the transmission of digital contents over the internet.In this dissertation the research study of the author concentrates on embedding and extraction of the watermarks author do not uses new trust model but design robust method for embedding and extracting the water lines The primary focuses of author are to improve the validity of the watermark and imperceptibility of digital content So he has presented his major donation to the watermark embedding and extracting scheme into the buyer seller watermarking protocol One can further increase robustness and imperceptibility of the embedding and extracting algorithm by applying some novel methods newline