Along with the bi-directional transformation of DTV networks and the development of three-network convergence, operators may launch various interactive value-added services based on the bi-directional network. However, interactive services are using public communication network as return channel, hence certainly have to face security problems such as identity spoofing, illegal access and privacy hijacking.
GOSPELL's Conditional Access System (CAS) can encrypt control words and user authorization information within a stable and highly secured environment. This system is 100% compatible with DVB simul-crypt standard, with high reliability and bi-directional interactive services. So that it could satisfy operators' various needs and requirements with high performance price ratio. In the bi-directional transmission network, our system could offer the interactive services, such as subscriber identification authority, online program ordering and audience survey.
Main Features:
·RSA with other algorithms ensures high system security
·Support both in-band and out-of-band authorization
·Support both unidirectional and bi-directional services
·Modular design eases future expansion and customized function development
·Upgradable from unidirectional CAS
·Reliable online audience survey statistics
·Support online program reservation and ordering
·Support checking of billing information
·Support dual-level smart card distribution from CAS provider and operator
·Comprehensive log management
·Support dual system warm standby
·Support unified management platform