Title :
Boneh-Shaw fingerprinting and soft decision decoding
Author :
Schaathun, Hans Georg ; Fernandez, Marcel
Author_Institution :
Dept. of Informatics, Bergen Univ., Norway
fDate :
29 Aug.-1 Sept. 2005
Abstract :
Collusion-secure codes are used for digital fingerprinting and for traitor tracing. In both cases, the goal is to prevent unauthorised copying of copyrighted material, by tracing at least one guilty user when illegal copies appear. The most well-known collusion-secure code is due to Boneh and Shaw (1995/98). In this paper we improve the decoding algorithm by using soft output from the inner decoder, and we show that this permits using significantly shorter codewords.
Keywords :
authorisation; copy protection; cryptography; decoding; Boneh-Shaw fingerprinting; collusion-secure codes; copyrighted material; decoding algorithm; digital fingerprinting; soft decision decoding; traitor tracing; Data security; Decoding; Fingerprint recognition; Forensics; Humans; Informatics; Motion pictures; Protection; Telematics; Watermarking;
Conference_Titel :
Information Theory Workshop, 2005 IEEE
Print_ISBN :
0-7803-9480-1
DOI :
10.1109/ITW.2005.1531884
