Strong password-only authenticated key exchange
ACM SIGCOMM Computer Communication Review
SPINS: security protocols for sensor networks
Wireless Networks
UMAC: Fast and Secure Message Authentication
CRYPTO '99 Proceedings of the 19th Annual International Cryptology Conference on Advances in Cryptology
Smart-Its Friends: A Technique for Users to Easily Establish Connections between Smart Artefacts
UbiComp '01 Proceedings of the 3rd international conference on Ubiquitous Computing
Random Key Predistribution Schemes for Sensor Networks
SP '03 Proceedings of the 2003 IEEE Symposium on Security and Privacy
LEAP: efficient security mechanisms for large-scale distributed sensor networks
Proceedings of the 10th ACM conference on Computer and communications security
Random key-assignment for secure Wireless Sensor Networks
Proceedings of the 1st ACM workshop on Security of ad hoc and sensor networks
Seeing-Is-Believing: Using Camera Phones for Human-Verifiable Authentication
SP '05 Proceedings of the 2005 IEEE Symposium on Security and Privacy
Proceedings of the 13th international conference on Security protocols
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Once a wireless sensor network (WSN) is stable and has been running for a while, sensors start to fail due to hardware problems, battery exhaustion or even due to their physical destruction. In any case, the administrator of the network may wish to replace the damaged nodes with new ones to reinforce the coverage area. In this paper we make use of an out of band channel (OOB) to bootstrap an authenticated symmetric key. The protocol ensures that the new sensor nodes are currently part of the region covered by the network before negotiating sensitive key material and making them a part of the system and its operations. We describe a novel approach to group admission for wireless sensor networks using an OOB secure channel and perform a security evaluation over this protocol.