디지털 핑거프린팅(Digital Fingerprinting) 기술은 온라인상에서 멀티미디어 콘텐츠의 저작권을 보호하기 위한 기술의 하나로 워터마킹(Watermarking) 기술과 같이 콘텐츠에 저작권을 증명하기 위한 부가정보를 비인지적으로 삽입하고 추출하는 기술이다. 핑거프린팅 기술에서는 주로 구매자의 정보를 삽입하기 때문에 콘텐츠를 처음 유포한 구매자를 역추적 할 수 있는 기능(trace traitor)을 제공한다. 본 고에서는 핑거프린팅 된 콘텐츠에서 악의적인 사용자가 핑거프린트를 제거하기 위하여 같은 콘텐츠를 구매한 다른 구매자와 공모하는 기술과, 이런 공모 후에도 핑거프린트를 추출할 수 있도록 삽입 코드를 공모 허용하도록 설계하는 공모보안코드에 대해 고찰한다.
KSP Keywords
digital fingerprinting
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