A Location Temporal Based Access Control Model for IoTs

Internet of things (IoTs) is a hot topic in recent years, and its various applications have been applied in several fields. The essence of IoTs is to connect all the things including the devices embedded RFID, sensors, etc. together, to help people utilizing the information from the things to improve their life. The things are always located at different places at different times, and the information of the thing may have different access right at different location during different time. Therefore, the access control mechanism in IoTs should consider location and temporary constraints in order to enhance the security of an application. In this paper, we propose a model that combines location and time with security level to control access to the information within the sensing layer of the IoTs. This model is called Location-Temporal Access Control Model(LTAC). The main principle of LTAC is its use of a lattice approach to decrease the size of policy bases. We show that how the different components in the model are related with location and how this location information can be used to determine whether a subject has access to a given object. (C) 2013 The Authors. Published by Elsevier B.V.