Sunday, October 3, 2010
Securing TV Broadcaster Backbone Network Distribution, Scrambling Services
TV broadcasters are being required to protect the content they distribute through their networks (backbone networks). Carl Walter from Appear TV explained to me at the IBC trade show explained that upgrading backbone networks that contain multiple channels so they have secure content distribution can be a significant challenge. What is needed is a set of devices that can encrypt and decrypt simulcast channels up to 850 Mbps. The scrambling system should be capable of scrambling hundreds of services, multiple formats (MPEG-2 and H.264), multiple resolutions (SD and HD), and be capable of only scrambling some of the channels (partial scrambling). Some of the available scrambling algorithms include AES and DVB CSA.