Description The Verimatrix Content Security Manager (CSM) is the core component of the most advanced software-based content security system available – the Verimatrix Video Content Authority System (VCAS). CSM enables and supports all features and options within a VCAS secured pay-TV system, including broadcast/multicast only, VOD only, or hybrid broadcast and VOD network deployments with secure, real-time key distribution for the full spectrum of content services. CSM is also equipped to support deployment of advanced interactive pay-TV features such as PVR and nPVR in conjunction with other head-end components. CSM acts as the root Certificate Authority in a PKI hierarchy, using X.509 certificates to validate and authorize all content protection communication within the pay-TV network. This includes messaging between VCAS sub-system components as well as between the head-end system and authenticated client STBs and PCs in subscriber households.