Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Central trusted authority provides computer authentication
Reexamination Certificate
2011-03-01
2011-03-01
Zand, Kambiz (Department: 2432)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Central trusted authority provides computer authentication
Reexamination Certificate
active
07900041
ABSTRACT:
Systems and methods which may be implemented as software to control access to content streams transmitted from a service provider's server. A software solution forces each set top box (STB) to periodically uplink to the server and to receive authentication from that server. To prevent spoofing, the server periodically loads to each STB at least one unique key that is required to access the content stream or that is required for authentication. The key or keys may be periodically revoked and/or replaced by the server. The frequency of the revocation and/or replacement of the key is ideally not fixed. Also, the server may periodically upgrade the decoding and/or authentication software on the STBs via the uplink.
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Collins English Dictionary, HarperCollins Publishers, 2000, Definition of Intermittent.
Collins English Dictionary, HarperCollins Publishers, 2000, Definition of Periodic.
Collins English Dictionary, HarperCollins Publishers, 2000, Definition of Irregular.
Collins English Dictionary, HarperCollins Publishers, 2000, Definition of Random.
Johnson Harold J.
Main Alexander
Borden Ladner Gervais LLP
Irdeto Canada Corporation
Kinsman Leslie A.
Zand Kambiz
Zecher Cordelia
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