상세정보
등록 ECL 기반 key rotation 기능 제공 방법
- 발명자
- 구한승
- 출원번호
- 15682743 (2017.08.22)
- 공개번호
- 20180060544 (2018.03.01)
- 등록번호
- 10515194 (2019.12.24)
- 출원국
- 미국
- 협약과제
- 16ME2900, 차세대 방송 콘텐츠 보호 기술 표준 개발, 구한승
- 초록
- Disclosed herein is a key rotation scheme for a DRM system in a DASH-based media content service. A DASH encoder generates media decryption keys and provides a key list including the media decryption keys to a CP manager. Each media decryption key is identified by a key identifier (KID). The CP manager delivers the key list to a license server. The license server creates ECLs based on the key list, and delivers an ECL list including ECLs to the CP manager. Each ECL is identified by KID and includes an encrypted media decryption key and an encrypted KID. The CP manager generates a pssh box in which the ECL list is inserted into a data field, and delivers the pssh box to the DASH encoder. The DASH encoder delivers the pssh box to a client device, with the pssh box being included in a DASH MPD or media segment.
- KSP 제안 키워드
- Data field, Key Rotation, decryption key, media content
- 패밀리
| 구분 | 특허 | 출원국 | KIPRIS |
|---|---|---|---|
| 등록 | DASH 기반 미디어 서비스에서 DRM 시스템을 위한 키 회전 | 대한민국 | KIPRIS |