SKEP: A secret key exchange protocol using physiological signals in wireless body area networks

The convergence of telecommunication technologies and the miniaturization of the electromechanical allowed an evolution proved in the world of wireless networks. This evolution is characterized by the emergence of a new generation of wireless personnel networks termed wireless body area networks (WBAN) that manages the human body functions. However, this technology has many requirements yet to be resolved. Security is the main challenge for this type of networks. In this paper, we propose a secret key exchange protocol using physiological signals in wireless body area networks (SKEP). This scheme allows a secure inter-sensor communication basing on physiological signals of the human body using cubic spline interpolation technique. Security analysis prove that our protocol guarantee data confidentiality and integrity in comparison with the previous protocol termed an efficient and secure key agreement scheme using physiological signals in body area networks.