Security in Wireless Sensor Networks (WSNs) is a major challenge for extending its applications. In this paper, a new protocol for key distribution in WSNs is proposed. The method, based on Elliptic Curve Cryptography, and named ECGDH-1, performs a double round key distribution, sharing a group key among the different nodes. For accelerating the… (More)
—The aim of this paper is to introduce a protocol for multicast distribution of secrets providing perfect forward and backward secrecy. The protocol is based on pairings on elliptic curves and has low cost communications and key storage. It is shown how this protocol improves some alternatives existing for real time communications.