Strongly Secure Identity-based Authenticated Key Agreement for Wireless Sensor Network

The computing power, the storage capacity and the communication bandwidth of the sensor nodes all are low, so it is necessary to realize mutual certification among nodes and key agreement, and to avoid relevant issues, such as storing large amounts of symmetric key, managing public key certificate, and high costs for certificate verification. Accordingly, an identity-based authenticated key agreement (no certificate management) for wireless sensor network is proposed. The new scheme, based on the elliptic curve discrete logarithm problem, does not use bilinear pairing, so its computational costs and the security assumptions are effectively reduced. The new protocol is provably secure in the random oracle model. The paper shows that the computational costs and the communication costs in the new scheme are relatively lower, and it meets the requirements of sensor network applications.