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. 20, 2010
Filed:
Nov. 14, 2005
Method for distributing keys for encrypted data transmission in a preferably wireless sensor network
Applicants:
Joao Girao, Heidelberg, DE;
Dirk Westhoff, Heidelberg, DE;
Mithun Puthige Acharya, Heidelberg, DE;
Inventors:
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a method for distributing keys for encrypted data transmission in a sensor network, nodes store a subset of keys from a set of keys. A sink node triggers the key election procedure and sensor nodes choose from a locally broadcasted keyID list, with one key to be stored on each node. All other initially stored keys are subsequently deleted. The process is repeated until the edge of the network is reached. Such key predistribution is suitable for the encryption of reverse multicast traffic to the sink node which is the predominant traffic pattern in wireless sensor networks.