Random-Error Resilience of a Short Collusion-Secure Code
スポンサーリンク
概要
- 論文の詳細を見る
The c-Secure CRT code is a collusion-secure fingerprinting code whose code length is reduced by using the Chinese Remainder Theorem. The tracing algorithm for the c-secure CRT code drops its performance of traitor tracing when random errors are added to the codewords. In this paper, we show two ap-proaches to enhance random-error-resilience to the tracing algorithm of the c-secure CRT code. The first approach is introducing thresholds for the distinction of the detected part of the embedded data called detected blocks. We propose, a method to derive appropriate values of the thresholds on an assumption that the tracer can estimate the random error rate, This modification extends the capability of traitor tracing to the attacks in which the alteration rate of the detected blocks is not fixed to 0.5. The second approach is extending the scope of the search for the detected blocks. With numerical results by computer simulations, we confirmed an impressive improvement of random-error-resilience of a c-secure CRT code.
- 一般社団法人電子情報通信学会の論文
- 2003-05-01
著者
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Matsumoto T
Graduate School Of Environment And Information Sciences Yokohama National University
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Matsumoto Tsutomu
Graduate School Of Engineering Yokohama National University:graduate School Of Environment And Infor
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YOSHIO Katsunari
Graduate School of Environment and Information Sciences, Yokohama National University
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Yoshio Katsunari
Graduate School Of Environment And Information Sciences Yokohama National University
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