关键词: 数字指纹，共谋攻击，数字版权管理，多播通信

Abstract: Considerable progress has been made in fingerprinting technology, particularly with regard to fingerprinting codes,embedding methods and colluder identification. But applying fingerprinting technology to engineering,it faces the problem on how to realize anti-collusion fingerprinting in real system. The concept of anti-collusion fingerprinting realination was introduced firstly, and then effects of three factors on it were studied. hhese factors arc anti-fingerprinting codes, content delivery system and user's multimedia consumption pattern. The tradeoff strategies between these factors and the problem were proposed. Some major anti-collusion fingerprinting realization algorithms were reviewed.hhcir performance was analyzed from following aspects: communication price, hardware and software costs which inelude computing and storage price, safety and real-time characteristics, etc. Finally, the future trend of the problem was discussed.

Key words: Digital fingerprinting, Collusion attack, Digital rights management(DRM) , Multicast communication