Watermarking schemes provably secure against copy and ambiguity attacks

André Adelsbach, Stefan Katzenbeisser, Helmut Veith
2003 Proceedings of the 2003 ACM workshop on Digital rights management - DRM '03  
doi:10.1145/947380.947395 dblp:conf/drm/AdelsbachKV03 fatcat:ydtimeicvjawdcvxaqcldf4inm