An Analytic Model for Reducing Authentication Signaling Traffic in an End-to-End Authentication Scheme.

In an end-to-end authentication (E2EA) scheme, the physician, patient, and sensor nodes authenticate each other through the healthcare service provider in three phases: the long-term authentication phase (LAP), short-term authentication phase (SAP), and sensor authentication phase (WAP). Once the LAP is executed between all communication nodes, the SAP is executed () times between the physician and patient by deriving a new key from the PS key generated by healthcare service provider during the LAP. In addition, the WAP is executed between the connected sensor and patient ( + 1) times without going back to the service provider.