As connectivity is becoming a norm for modern vehicles, data exchange between in-vehicle components and external entities is becoming common. However, car makers is concerned about a third-party's extraction of their proprietary vehicle data. To address this concern, an intermediate ECU (or a gateway) is introduced in between internal and external networks to translate proprietary in-vehicle data to rich type data, thus preventing the exposure of raw in-vehicle data. However, the translation relies solely on the gateway which can be a direct target of cyber attacks, making it difficult to trust the data passed through the gateway. This, in turn, requires authentication of the translated data. We present a new, effective protocol that provides secure communications between the vehicle's internal components and external entities against a compromised gateway.

The advent of converged environment merged with wireless sensor networks (WSNs) and mobile networks can have the possibility on enabling us to experience variety of ubiquitous applications based on multi-sensor attached smartphones. However, most of current researches are failed to recognise the fact that there are many drawbacks to break through between the heterogeneous networks such as a WSN and mobile network. In this study, the authors propose the authentication and key agreement protocol that efficiently reduces the overall computational and communication costs in the next generation converged network. The enhanced security procedures are operated through the mobile network in order to maximise the lifetime of the sensor networks and to apply the combined capabilities of both networks. The authors show the presented novel design can show the feasibility to minimise the usage of the sensor networks with the battery-powered sensors in comparison with the existing authentication models, and can be deployed under the standard architectures.

Energy efficiency is one of important issues in the resource constrained wireless sensor network. In this paper, we propose the authentication and key agreement protocol that efficiently reduces the overall computational and communication costs in the next generation converged network. The enhanced security procedures are operated through the mobile network in order to maximize the lifetime of the sensor networks and to apply the combined capabilities of both networks.