The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 22, 2014
Filed:
Mar. 28, 2008
Axel G. Huebner, Aachen, DE;
Heribert Baldus, Aachen, DE;
Oscar Garcia, Aachen, DE;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
When installing and maintaining a wireless sensor network in a medical or factory environment, distribution of keying material to sensor nodes () is performed by a key material box (KMB) (), such as a smartcard or the like. The KMB () has a random seed stored to it during manufacture, and upon activation performs an authentication protocol with a sensor node () to be updated or installed. The KMB () receives node identification information, which is used in conjunction with the random seed to generate keying material for the node (). The KMB () then encrypts the keying material for transmission to the node (), and transmits over a wired or wireless communication link in a secure manner. The node () sends an acknowledgement message back the KMB (), which then updates the nodes status in look-up tables stored in the KMB ().