DRM (Digital Rights Management)[1][2]은 디지털 컨텐츠의 불법 사용방지를 위한 기술로서 인터넷과 같은 전송 매체를 통해 디지털 컨텐츠가 배포될 때 DRM의 복제 방지 기능을 사용해서 디지털 컨텐츠의 안전한 배포 및 판매를 촉진시키기 위한 기술이다. 이러한 DRM 환경 하에서 디지털 컨텐츠 저작권자의 가장 큰 요구 사항인 저작권 보호와 컨텐츠 보호를 위한 핵심 기능을 수행하는 DRM Client 시스템은 신뢰할 수 없는 사용자 환경에 설치되어 향후 배포되는 디지털 컨텐츠들에 대한 확인 및 플레이(실행)를 지속적으로 처리하게 되며, 이러한 처리 과정 중에 DRM Client 시스템은 사용자에 대한 인증이나 암호화된 디지털 컨텐츠 데이터의 복호화 및 디지털 컨텐츠 사용규칙을 명시한 라이센스에 관한 데이터를 처리하며 이러한 데이터는 사용자가 접근 못하도록 안전하게 보호되어야 한다. 본 논문은 이러한 사용자 인증키, 암호키, 라이센스 데이터를 DRM Client 시스템 하에서 안전하게 보호할 수 있는 Secure Storage Device (SSD)를 구현하여 소개하는데 그 목적이 있다.
KSP Keywords
Digital rights management(DRM), Storage device, secure storage
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