On error-correcting fingerprinting codes for use with watermarking |
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Authors: | Hans Georg Schaathun |
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Affiliation: | (1) Department of Computing, University of Surrey, GU2 7XH Guildford, England |
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Abstract: | Digital fingerprinting has been suggested for copyright protection. Using a watermarking scheme, a fingerprint identifying
the buyer is embedded in every copy sold. If an illegal copy appears, it can be traced back to the guilty user. By using collusion-secure
codes, the fingerprinting system is made secure against cut-and-paste attacks. In this paper we study the interface between
the collusion-secure fingerprinting codes and the underlying watermarking scheme, and we construct several codes which are
both error-correcting and collusion-secure. Error-correction makes the system robust against successful attacks on the watermarking
layer. |
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Keywords: | Collusion-secure fingerprinting Copyright protection Error-correcting codes Watermarking Soft-decision decoding |
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