A Novel JFD Scheme for DRM Systems Based on DWT and Collusion Resistance Fingerprint Encoding

摘要

With the proliferation of the internet and rapid development of multimedia, media distribution and traitor tracing issues have become imperative and critical. In this paper, the Digital Rights Management (DRM) system based on novel Joint Fingerprinting and Decryption (JFD) scheme is proposed, which transmit the encrypted image to different customers and makes each customer decrypt the image into a different copy that contains the customer's unique information. Till now, some JFD schemes have been reported, that solves encryption and fingerprinting simultaneously and has high efficiency, but several problems still remain to be tackled in JFD, including poor encryption security, severe fingerprinted image distortion, etc. An improved JFD scheme, which based on Discrete Wavelet Transform (DWT) of media and collusion resistant fingerprint encoding, is presented in the paper. The experimental results show that the proposed scheme is more secure compared with the existing scheme, it obtains good imperceptibility and robustness. These properties make it a suitable choice for secure image distribution in real time applications.