Cryptography – Key management – Having particular key generator
Patent
1994-12-16
1996-01-16
Beausoliel, Jr., Robert W.
Cryptography
Key management
Having particular key generator
380 3, 380 45, H04L 900
Patent
active
054855772
ABSTRACT:
Incremental delivery of authenticated access rights to an access control processor is provided. Subgroups of the access rights are communicated to the processor in a plurality of messages. The subgroups are stored in different data banks within the processor, and validity designations associated with the data banks indicate whether the data currently stored therein has been authenticated under a cryptographic key currently in use. Access under a particular key is limited to that provided by access rights contained in storage banks having a validity designation in a valid state for that key.
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K. Kelkar, Access Control Requirements in a Mature Pay Television Industry, 1992, pp. 229-231, Broadcasting Convention 1992, IEE Conference Pub. 358.
Eyer Mark K.
Moroney Paul
Beausoliel, Jr. Robert W.
General Instrument Corporation of Delaware
Lipsitz Barry R.
Wright Norman M.
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