Design and implementation of an ECDSA-based identity authentication protocol on WSN

As the first step of the key management, identity authentication directly affects the security of WSN. However because of the limited-resources of WSN, traditional authentication protocol can´t directly apply in WSN. To adapt to needs of it, we propose an ID-based identity authentication protocol based on ECDSA. ECDSA (elliptic curve digital signature algorithm) is the application of ECC in the signature protocol and the elliptic curve edition of the DSA (digital signature algorithm). Based on this theory, protocol not only can prevent the imitation of the enemy node under the passive attack, but also can authenticate KAC (key assign center) and effectively avoid the attack of masquerading. We also simulate the protocol on TinyOS, and the experimental results show that the protocol is effective and feasible in WSN.