One kind of Shamir's offer limited two-way authentication and secure data transmission method based on a body area network security

The present invention discloses a method based on Shamir's threshold, the wireless body area network to provide two-way authentication and secure method of data transmission security. The main steps are: 1) the network manager to initialize wireless body area network, then each body area network applications using user initiated their own individual sensors and smart mobile devices in the relevant configuration information. 2) an individual user's sensor with the user's smart mobile devices for two-way authentication, encryption upon successful data transmission to smart devices. 3) receipt of all sensor data to the user, the smart mobile devices to decrypt data fusion, re-calculate a shared secret, as with the remote service device symmetric key, and then two-way remote service device authentication, success after sending encrypted data. 4) remote service device in data obtained after the intelligent device, the key information will be updated each time into the next period of time.