Dynamic Tardos Traitor Tracing Schemes

Details Dynamic Tardos Traitor Tracing Schemes Dynamic Tardos Traitor Tracing Schemes

2011-11-15

arxiv.org/abs/1111.3597v1

Computer Science

Cryptography and Security

13 pages, 5 figures

Scientific paper

We construct binary dynamic traitor tracing schemes, where the number of watermark bits needed to trace and disconnect any coalition of pirates is quadratic in the number of pirates, and logarithmic in the total number of users and the error probability. Our results improve upon results of Tassa, and our schemes have several other advantages, such as being able to generate all codewords in advance, a simple accusation method, and flexibility when the feedback from the pirate network is delayed.

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