Novel Approaches for the Development of Trusted IoT Entities

The Internet of Things (IoT) is a paradigm allowing humans and smart entities to be interconnected anyhow and anywhere. Trust is fundamental in order to allow communication among these actors. In order to guarantee trust in an IoT entity, we believe that it must be considered during the whole System Development Life Cycle (SDLC). Anyhow, we think that usual development techniques are not effective for the IoT. For this reason, in this paper, we describe a methodology to develop an IoT entity by proposing a holistic approach implementing three different techniques: a bottom-up approach, a top-down approach and a trusted block development. Firstly, the top-down approach will start from the general IoT entity going down to its specific functionalities. Secondly, the bottom-up approach will focus on the contexts related to the IoT entity. It starts from basic ones, going up aggregating them to the composition of the IoT entity as a whole. Finally, the trusted block development will define different blocks of code related to functionalities and contexts. Every block can be considered a trust island where the contexts and functionalities are specified only for a particular block.