Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2007-06-19
2007-06-19
Barrón, Jr., Gilberto (Department: 2132)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C380S277000
Reexamination Certificate
active
09748441
ABSTRACT:
A method for authenticating appliance messages sent between an appliance and an appliance communication center over an appliance communications network includes maintaining a shared message counter at both the appliance communication center. A shared message counter at both the appliance communication center and the remotely located appliance. An authentication algorithm is applied to the appliance message and the shared message counter to generate an authentication word. The appliance message is then transmitted to the appliance or the communication center along with the authentication word. Upon receiving the appliance message, the appliance or the communication center will apply an authentication algorithm to the appliance message and the shared counter to generate an authentication word. The generated authentication word may be compared to the word received with the appliance message to determine authenticity of the message.
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Daum Wolfgang
Evans Scott Charles
Hershey John Erik
Armstrong Teasdale LLP
Barrón Jr. Gilberto
Dinh Minh
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