Cryptography – Key management – Having particular key generator
Reexamination Certificate
2005-12-27
2005-12-27
Revak, Christopher (Department: 2131)
Cryptography
Key management
Having particular key generator
C380S255000, C713S163000, C713S172000
Reexamination Certificate
active
06980651
ABSTRACT:
A method for creating a secure sub-network on a public network that includes a set of devices. The secure sub-network is to include a subset of devices from among the set of devices. An access card is provided having a first private key comprised thereon. The access card is scanned to determine the first private key, by the subset of devices. A master device is determined from among the subset of devices. A second private key is selected and a public key is computed based on the second private key, by the master device. The second private key is only known to the master device. The public key is sent to the set of devices, by the master device. A shared encryption key is computed, and an encryption is requested of any subsequent messages between any of the devices comprising the subset of devices using the shared encryption key.
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Derrenberger Michael Arthur
Litwin, Jr. Louis Robert
Ramaswamy Kumar
Kolodka Joseph J.
Laks Joseph J.
Revak Christopher
Thomson Licensing
Tripoli Joseph S.
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