Key Distribution and Management for Conditional Access System on DBS

Abstract

In this paper, key distribution and management for Conditional Access System (CAS) on Digital Broadcasting System (DBS) via KoreaSat is proposed in order to provide Pay TV services. The levels of keys for CAS are defined and analysis of characteristics of key and management on CAS are considered. In addition to that, we also discuss they key distribution protocols. Finally, the scenario of key distribution and management on overall system is described.