Method and processing unit for secure processing of access controlled audio/video data
作者： Olivier Brique , Fabien Gremaud
DOI:
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摘要: A method based on access conditions verification performed by two conditional devices consecutively a control message before releasing word and forwarding it to descrambler. The is structured so that encapsulates another message. processing unit for carrying out the comprises first device connected second provided with descrambler secured processor or hardware logic. configured receiving messages comprising at least part containing as word. are each encrypted accompanied respectively authentication data. decrypts verifies integrity of message, transmits when successful. further conditions, releases loads into descrambles audio/video data forwards said in clear an appropriate output unit.
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