A scheme for key distribution in wireless sensor network based on Hierarchical Identity-Based Encryption

Traditional method of key distribution does not fit the need to run in wireless sensor network (WSN) due to limitation on energy, computation and memory capacity of WSN. In this paper, we propose a scheme based on Hierarchical Identity-Based Encryption (HIBE) to distribute encrypt key. Comparing with key distribution based on Identity-Based Encryption (IBE), the proposed scheme reduces the computation time and saves memory space of wireless sensor node.