Research about Authentication and Data Security Based on Media System
Jiang Guo-song, Zhichao Yu · 2010
The program data is encrypted at the time the data is introduced into the system. Program data stays encrypted until sent to MC to be decoded and display on TV. The encryption keys for the program data are never transferred out side of the data center. Instead, the “seed keys” are sent out. A secret algorithm is used to convert a seed key to a real key for decryption.