Research on lightweight digital signature scheme in wireless sensor network

In order to protect the security of information transmitted in WSN, a lightweight digital signature scheme based on symmetric cryptographic algorithm is proposed. In the scheme, a combined secret key generation algorithm is used to generate one-time signature secret key, while hardware encryption devices is deployed to manage symmetric secret keys and establish signature protocol and signature verification protocol. The experiment results show that the proposed scheme has some feathers of high computational speed, less additional communication bandwidth and low energy consumption compared with popular signature protocols.