Abstract：Due to the limited energy, small storage room and so on, the traditional network key management scheme is challenged. Based on the transerval design，bivariable polynomial and threshold strategy, a new pairwise key establishment scheme and multi-path key construction strategy suit to clustered wireless sensor network is proposed. By this scheme and transerval design, the nodes in the same cluster can directly construct pair-wise key and the nodes in the different clusters can construct path key based on threshold strategy. Theory and simulation analysis indicate that the new scheme can not only increase the security, connectivity and vulnerability, but also decrease the communication overload and storage cost. The scalability is another good character.
2009, Vol. 31 
