A system to transmit a set of programs from a transmitter to a receiver is used to accommodate different levels of security used for each program. When a high level of security is necessary for transmitting or receiving a program the transmitter and/or receiver is operable to accommodate that level of...http://www.google.es/patents/US8166292?utm_source=gb-gplus-sharePatente US8166292 - Configurable encryption/decryption for multiple services support
Configurable encryption/decryption for multiple services support