A group-based fingerprinting scheme for digital wholesale and retail

Prior group-based fingerprinting achieves better detection performance when colluders are from the same group. But in digital wholesale and retail, the middleman needs to be identified as well as customers especially against group colluding attack. The group tracing is neglected in previous works. In this paper, we propose a novel multimedia group fingerprint to trace malicious middlemen along with customers. We explore the quality of the non degenerate linear shift register sequence (NDLSRS) which is convenient in group initialization and management. The theoretic analysis and simulation experiment results show that NDLSRS has good resistance against attacks from colluding groups/members even after its volume expanded.