Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2003-11-27
2009-12-22
Korzuch, William R (Department: 2431)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C713S157000, C713S178000, C713S180000, C726S010000
Reexamination Certificate
active
07636848
ABSTRACT:
Communication between an administrator device and an administered device in a network is arranged in the form of a chain of digitally signed communication items including messages sent from an originator device to a recipient device. Each message has an associated respective digitally signed receipt, and the originator device is configured not to send a new item toward the recipient device in the absence of a respective digitally signed receipt for a previously sent item. With at least one, and preferably by both of the administrator device and the administered device, there is stored a history record of communication items exchanged therebetween. The history record is agreed upon and signed by both the administrator device and the administered device.
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Caprella Ettore Elio
De Lutiis Paolo
Leone Manuel
Zaccone Pier Luigi
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Korzuch William R
Moorthy Aravind K
Telecom Italia S.p.A.
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