본 논문에서는 DVB 파일포맷 기반의 방송프로그램 패키징 방법을 제안한다. DVB 파일포맷은 유럽의 디지털 방송 표준화 단체인 DVB(Digital Video Broadcasting)에서 제정한 방송프로그램 파일포맷의 규격이다. 제안된 방법에서는 우선 방송프로그램으로부터 PSIP 등의 데이터를 추출하여 규격화된 메타데이터를 생성하고, 허가받지 않은 사용자로부터 의 접근을 차단하기 위하여 비디오 스트림에 부분암호화(partial encryption)를 적용한다. 그리고 비디오 스트림이 암호화된 방송프로그램과 암호화키, 그리고 메타데이터를 하나의 파일로 패키징하기 위하여 DVB 파일포맷을 적용한다. 검증실험에서는 파일 패키저의 구현을 통하여 제안된 방송프로그램 패키징 방법의 유용성을 확인한다.
KSP Keywords
Digital video broadcasting, partial encryption
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