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数字指纹可以用来标识数字媒体的使用者,达到版权保护的目的。其面临的最大问题是如何抵抗合谋攻击。解决该问题的主要手段是寻找好的指纹编码方案,这也是指纹技术研究中的难点。本文给出了利用纠错码中的RS码构造ω-IPP码的充分条件及码字上限,不但为用纠错码构造ω-IPP提供了理论根据,而且为数字指纹的实际应用提供了技术保障。
Digital fingerprinting can be used to identify digital media users, to achieve the purpose of copyright protection. The biggest problem it faces is how to counter collusion attacks. The main means to solve this problem is to find a good fingerprint coding scheme, which is also the difficulty of fingerprint technology research. In this paper, the sufficient conditions for constructing ω-IPP codes using the RS codes in the error correction codes and the upper limit of the code words not only provide a theoretical basis for constructing ω-IPP using error correction codes, but also provide the technical basis for the practical application of digital fingerprints Protection.