다운로더블 제한 수신 서비스를 위한 헤드엔드 시스템 및 그동작방법
김순철, 권은정, 정영호, 구한승, 김희정, 이수인, 권오형
- 8533458 (2013.09.10)
- A method of operating a headend system for a downloadable conditional access service, the method including: receiving, by an Authentication Proxy (AP) server, basic authentication information from a Downloadable Conditional Access System (DCAS) host, the basic authentication information being required to authenticate the DCAS host; transmitting, by the AP server, the basic authentication information to an external trusted authority device which authenticates the DCAS host; generating, by the AP server, a session key for encrypting/decrypting a secure micro client using a session key sharing factor; obtaining, by the AP server, download-related information of the secure micro client from a DCAS Provisioning Server (DPS); and commanding, by the AP server, an Integrated Personalization System (IPS) server to download the secure micro client to the DCAS host based on the download-related information, the secure micro client being encrypted by the session key.
- KSP 제안 키워드
- Conditional access system, Session key, Trusted Authority, conditional access, key sharing