Data processing: financial – business practice – management – or co – Business processing using cryptography
Reexamination Certificate
2007-06-05
2010-02-02
Nguyen, Nga B. (Department: 3692)
Data processing: financial, business practice, management, or co
Business processing using cryptography
C705S017000, C705S041000, C705S067000, C705S071000, C713S151000, C713S159000, C726S003000, C726S029000, C380S029000, C380S029000
Reexamination Certificate
active
07657488
ABSTRACT:
An apparatus is provided for validating a device. The apparatus includes a first integrated circuit which stores a first key, is configured to generate a random number, and is configured to generate encrypted information using the generated random number and the first key. A control system is configured to: receive the encrypted information and random number from the first integrated circuit, send the encrypted information to a second integrated circuit positioned on the device, receive decrypted information from the second integrated circuit whereby the decrypted information is generated using the encrypted information and a second key, and compare the random number and decrypted information received from the respective integrated circuits to validate the device.
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Silverbrook Kia
Walmsley Simon Robert
Nguyen Nga B.
Silverbrook Research Pty Ltd
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