Publication Type

Conference Proceeding Article

Version

publishedVersion

Publication Date

3-2011

Abstract

In an end-to-end encryption model for a wireless sensor network (WSN), the network control center preloads encryption and decryption keys to the sensor nodes and the subscribers respectively, such that a subscriber can use a mobile device in the deployment field to decrypt the sensed data encrypted by the more resource-constrained sensor nodes. This paper proposes SMS-SED, a provably secure yet practically efficient key assignment system featuring a discrete time-based access control, to better support a business model where the sensors deployer rents the WSN to customers who desires a higher flexibility beyond subscribing to strictly consecutive periods. In SMS-SED, a node or a mobile device stores a secret key of size independent of the total number of sensor nodes and time periods. We evaluated the feasibility of deploying 2000 nodes for 4096 time periods at 1024-bit of security as a case study, studied the trade off of increasing the storage requirement of a node to significantly reduce its computation time, and provided formal security argument in the random oracle model.

Keywords

compact key size, data confidentiality, sensor network security, subscription-based key management, access control, weak computational device

Discipline

Information Security

Research Areas

Cybersecurity

Publication

ASIACCS '11: Proceedings of the 6th ACM Symposium on Information, Computer and Communications Security: Hong Kong, March 22-24

First Page

228

Last Page

237

ISBN

9781450305648

Identifier

10.1145/1966913.1966943

Publisher

ACM

City or Country

New York

Additional URL

https://doi.org/10.1145/1966913.1966943

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