Communications: electrical – Condition responsive indicating system – With particular coupling link
Reexamination Certificate
2009-06-16
2010-11-23
Hunnings, Travis R (Department: 2612)
Communications: electrical
Condition responsive indicating system
With particular coupling link
C340S500000, C340S501000
Reexamination Certificate
active
07839278
ABSTRACT:
A key is determined from a volatile response using circuitry on the device. The volatile response depend on process variation in fabrication of the device. Error control data that depends on the first volatile response can be computed, stored externally to the device, and then used to generate the key using a volatile response using the circuit. Applications of volatile keys include authentication and rights management for content and software.
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Devadas Srinivas
Ziola Thomas
Hunnings Travis R
Occhiuti Rohlicek & Tsao LLP
Verayo, Inc.
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