Research On Copyright Protection And Tracing Based On Synergetic And Digital Fingerprinting

With the developing of internet, digital multimedia products can be easily copied and unauthorized redistributed, which led to great economic losses.Digital copyright management is an effective way to solve the problem, which has become a very important and urgent issue in the digital multimedia world.After studyingthe existing digital copyright management mechanisms, this paper proposed a copyright protection and tracing mechanismbased on synergetic and digital fingerprinting.And this mechanism can be divided into digital products distribution mechanism, digital products nonproliferation mechanism and digital products copyright authentication mechanism three parts, which used cryptography, digital watermarking, digital fingerprinting and synergetic theory, can solve the copyright protection and tracking the piracy source problem effectively.Theanti-collusion digital fingerprinting based on synergetic is the core support technology of the mechanism. Digital ?ngerprinting uniquely labels each distributed copywith user's ID and is an emerging forensic tool to protect multimedia from unauthorized redistribution and illegal alteration. Multi-user collusion is a powerful attack against digital ?ngerprinting, where a group of attackers work together to undermine the tracing capability. To provide reliable traitor tracing and support multimedia forensics, the?ngerprinting proposedcan resist multi-usercollusion as well as single-copy attacks and common signal processing,which is proved by a lot of experiments.