Study on key management scheme for heterogeneous wireless sensor networks

Heterogeneous wireless sensor network (HWSN) is composed of different functional nodes and is widely applied. With the deployment in hostile environment, the secure problem of HWSN is of great importance; moreover, it becomes complex due to the mutual characteristics of sensor nodes in HWSN. In order to enhance the network security, an asymmetric key pre-distributed management scheme for HWSN is proposed combining with authentication process to further ensure the network security; meanwhile, an effective authentication method for newly added nodes is presented. Simulation result indicates that the proposed scheme can improve the network security while reducing the storage space requirement efficiently. Copyright © by HIGH TECHNOLOGY LETTERS PRESS.