SECURITY PROCESSOR AND RECORDING METHOD AND MEDIUM FOR CONFIGURING THE BEHAVIOUR OF THIS PROCESSOR

Security processor (42) for a decoder able to receive a scrambled multimedia signal, this processor comprising: -at least one first rewritable lock (FIELDKEY, FIELDPIEMM, FIELDPIEMMC, FIELDPIECM, FIELDFCT) whose value can be toggled between a first and a second predetermined value in response to an...

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Bibliographic Details
Main Authors DANOIS, PASCAL, GRANET, OLIVIER, LE HENAFF, SÉBASTIEN
Format Patent
LanguageEnglish
Polish
Published 31.10.2011
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRIC DIGITAL DATA PROCESSING
ELECTRICITY
PHYSICS
PICTORIAL COMMUNICATION, e.g. TELEVISION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:Security processor (42) for a decoder able to receive a scrambled multimedia signal, this processor comprising: -at least one first rewritable lock (FIELDKEY, FIELDPIEMM, FIELDPIEMMC, FIELDPIECM, FIELDFCT) whose value can be toggled between a first and a second predetermined value in response to an EMM or ECM message, -a restriction function able to authorize and, alternately, prohibit, as a function of the value of the first lock, only one particular operation of the security processor, this particular operation being chosen from the group composed of: the use of a cryptographic key, the processing of a parameter contained in an EMM or ECM message received, and the execution of an elementary conditional access function of the code of the application.
Bibliography:Application Number: PL20070823456T