Abstract EN:

Sensor networks appear to be one of the technologies of the 21st century. Empowered with short wireless communication capabilities, wireless sensor networks (WSNs) leverage traditional sensor networks by enabling random and dense deployment of smart and low-resource devices in different physical areas (e. G. Battle field, body). Self-organized, wireless network are composed of low-cost, low-power and heterogeneous sensor devices, which are capable of sensing, processing, routing and disseminating data towards special sensor nodes so-called sinks or gateways. Empowered with monitoring capabilities, WSNs are highly pro table for applications from different domains (e. G. Defense, healthcare, traffic control). To that respect, WSNs raise the awareness of business applications. Therefore, WSNs support them in their functional optimization and in the reduction of response time in decision making. Nevertheless, and despite of the interest of industrials, there is still a technical and security gap between business applications and WSN systems. The main contribution of this thesis lies in the integration of wireless sensor networks into business applications in a secure and trusted way. Hence the use of sensor data within business application comes along with strong security and trust requirements from industrials. In order to full technical requirements, we design a mediation layer between WSNs and business applications underlying mechanisms for acquisition, processing, persistence and delivery of sensor data. We enrich our mediation layers with two security and trust mechanisms tting resource restrictions on nodes. We propose a security mechanism for efficient access control to sensor data, and a trust mechanisms for the assessment of sensor data from their production on the nodes, to their delivery to business applications.