PROCESSEUR DE SECURITE ET PROCEDE ET SUPPORT D'ENREGISTEMENT POUR CONFIGURER LE COMPORTEMENT DE CE PROCESSEUR

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...

Full description

Saved in:
Bibliographic Details
Main Authors GRANET OLIVIER, DANOIS PASCAL, LE HENAFF SEBASTIEN
Format Patent
LanguageFrench
Published 16.01.2009
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
Online AccessGet full text

Cover

More Information
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: FR20060007631