Patent · US Active

Method for distributing keys for encrypted data transmission in a preferably wireless sensor network

US7702905B2 · kind B2 · utility

4Cited by

0References

13Claims

0Family size

Assignee

NEC CORPORATION · JP

Inventors

Joao Girao · Heidelberg, DE
Dirk Westhoff · Heidelberg, DE
Mithun P. Acharya · Cary, US

Key dates

Filing date	Nov 14, 2005
Grant date	Apr 20, 2010
Priority date	—
Expiry date	Feb 18, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH04W84/18
WIPO fieldDigital communication
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.