A generic framework for device pairing in ubiquitous computing environments

Recently secure device pairing has had significant attention from a wide community of academic as wellas industrial researchers and a plethora of schemes and protocols have been proposed, which use various forms of out-of-band exchange to form an association between two unassociated devices. These protocolsand schemes have different strengths and weaknesses - often in hardware requirements, strength againstvarious attacks or usability in particular scenarios. From ordinary user's point of view, the problem then becomes which to choose or which is the best possible scheme in a particular scenario. We advocate that in a world of modern heterogeneous devices and requirements, there is a need for mechanisms that allowautomated selection of the best protocols without requiring the user to have an in-depth knowledge of the minutiae of the underlying technologies. Towards this, the main argument forming the basis of this research work is that the integration of a discovery mechanism and several pairing schemes into a single system is more efficient from a usability point of view as well as security point of view in terms of dynamic choice of pairing schemes. In pursuit of this, we have proposed a generic system for secure device pairing by demonstration of physical proximity. The contributions presented in this paper include the design and prototype implementation of the proposed framework along with a novel Co-Location protocol