In order to ensure the security of sensor access to the information intranet and the confidentiality, integrity and availability of data in the process of transmission, storage and use, this paper proposes a multi parameter collaborative authentication scheme with joint consideration of the equipment performance and digital signature. Then a new identity based key establishment protocol is proposed by using elliptic curve cryptosystem. Through security performance analysis, compared with the existing classical schemes, the proposed scheme is more secure with less computing time consumption while facing the imitation attack, MITM(Man-In-The-Middle) attack and desynchronization attack.