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:
Oct. 23, 2012
Filed:
Apr. 25, 2007
Frederik Armknecht, Worms, DE;
Joao Girao, Leimen, DE;
Dirk Westhoff, Neustadt an der Weinstrasse, DE;
Frederik Armknecht, Worms, DE;
Joao Girao, Leimen, DE;
Dirk Westhoff, Neustadt an der Weinstrasse, DE;
NEC Europe Ltd., Heidelberg, DE;
Abstract
A method for aggregating data in a network, particularly in a wireless sensor network, wherein the network () includes a plurality of sensor nodes (N) to measure data and at least one sink node (S) at which the data measured by the sensor nodes (N) are aggregated, and wherein each sensor node (N) encrypts its measured data with a key k and forwards the result towards the sink node (S), is characterized in that, in the context of a key distribution within the network (), a master key K is chosen, and that the master key K is autonomously split up by the network () into individual keys kto be used by the sensor nodes (N) for encrypting measured data, with the sum of all individual keys kbeing equal to the master key K.