Method and apparatus for controlling the operation of a...

Details Method and apparatus for controlling the operation of a... Method and apparatus for controlling the operation of a...

H - Electricity

04

H

H04H 60/14 (2008.01) H04H 40/18 (2008.01) H04L 9/28 (2006.01) H04N 7/167 (2006.01)

Patent

CA 2179223

In a method and apparatus for controlling the operation of a signal decoder in a broadcasting system, a broadcast signal and an encrypted signature are generated and the signature is added to the signal. The signal together with the signature is broadcasted and received in the decoder, where the signature is decrypted and compared with a verification value. If a match occurs, further operation of the decoder is allowed. If a match does not occur, further operation of the decoder is disallowed.

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