The scope of this guiding technical document specifies the system composition and overall requirements of conditional access systems in digital television broadcasting systems such as terrestrial, wired, and satellite. The appendix provides the interface and requirements between the program information management system and conditional access system, the requirements and interfaces of the user management system, the requirements for smart cards and their interfaces with receivers, the identification of conditional access smart cards, the same encryption technology, and the multi encryption technology The use of multi encryption technology, universal scrambling systems, and regulations for business information/program specific information (SI/PSl) related to CA. This guiding technical document is applicable to conditional access systems in digital television broadcasting systems such as terrestrial, wired, and satellite systems
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