패밀리 도메인에서 안전한 콘텐츠 배포를 지원하는 라이센스 관리 기법 = License Management Method supporting secure contents distribution in Family Domain

다국어 초록 (Multilingual Abstract)

Superdistribution service of DRM system is an essential part for revitalization of digital contents distribution. However, it limits superdistribution range to superdistribution between consumers. Recently, as the demands of the consumer increase, the consumers want to use the contents in their multiple devices. In this paper, we propose a license management method supporting superdistribution between devices owned by a consumer. The proposed method creates domain key for device authentication by using identification informations of devices owned by a consumer and stores it in license. If devices are changed, domain key and license are updated. Through this method, contents distribution between devices can be achieved securely and efficiently. Also, this license management method can apply to superdistribution between consumers.

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