A key management scheme for wireless sensor networks based on bridge and ECC

摘要

Providing a key suitable management protocol is a challenging task in wireless sensor network. Based on Elliptic Curve Cryptography and Bridge, a key management scheme for wireless sensor network is proposed in the paper. It adopts the bridge and hash chain technologies to achieve session keys establishment and fast authentication between nodes. This protocol also supports new nodes join and invalid nodes elimination, so it has good dynamics and extendibility. It is proved that the protocol is secure under the Elliptical Curve Discrete Logarithm Problem. The analysis result indicates that the scheme has advantages of good security, a small amount of calculation and less storage consumption.