상세정보
등록 디지털 케이블방송 시스템에서 공개키 암호 알고리즘을 이용한 서비스 신청 및 암호화 키 분배 방법
- 출원번호
- 10868508 (2004.06.14)
- 공개번호
- 20050141712 (2005.06.30)
- 등록번호
- 7570763 (2009.08.04)
- 출원국
- 미국
- 협약과제
- 03MR1100, 지능형 통합정보방송(SmarTV)기술개발, 안치득
- 초록
- A method for subscribing a service and distributing encryption key based on public-key encryption algorithm in a digital CATV system are disclosed. In accordance with an aspect of the present invention, there is provided a method including the steps of: a) generating a charged service application message; b) generating a session connection request message, signing based on a digital signature scheme with appendix on the session connection request message and transmitting to the head-end; c) generating a symmetric-based session key, signing a digital signature on the key, encrypting based on a public-key of the subscriber, transmitting the session key to the subscriber; decrypting the session key message, verifying the digital signature, extracting the session key from the session key message and storing at a Condition Access Module; and d) signing a digital signature on the charged service request message, encrypting using the extracted session key and transmitting to the head-end.