A Secure Transmission Protocol for Wireless Body Sensor Networks

A wireless body sensor network (WBSN) is a typically wearable wireless network deployed on a user’ body, which consists of biosensors and a local personal wireless hub, which we commonly call wireless body sensor network controller (WBSNC). The sensitive micro data (SMD) of WBSN users is collected by biosensors and forwarded to the WBSNC before it is delivered to the data process center (healthcare terminal or remote server) for further processing. Since SMD involves user’s personal privacy, it is important to protect secure transmission of SMD. Therefore it is crucial to admit only legitimate biosensors and WBSNC into the network in a WBSN. Ensuring the safety of data transmission from each biosensor to WBSNC or between WBSNC and the data process center is essential because of the open feature in wireless channel. In this paper, we present a novel kind of cryptography and authentication method to assure a secure network admission and transmission in a WBSN based on ID. The procedures in this system to establish keys for each biosensor and WBSNC must offer high communication validity and as low energy consumption as possible. In addition, we also propose a new way to protect BSN secure access for biosensor and WBSNC in order to block interference from Pseudo Node.