Method and apparatus for incremental delivery of access rights
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United States of America Patent
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Jan 16, 1996
Grant Date -
N/A
app pub date -
Dec 16, 1994
filing date -
Dec 16, 1994
priority date (Note) -
In Force
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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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