5. Conclusion

Wireless sensor networks raise questions about the security of goods and people. Indeed, some applications may be closely linked to sensitive infrastructures, such as water and electricity supply networks, or the surveillance of bridges and buildings, while others manage information linked to people's private lives, such as their movements and state of health. Cryptographic solutions exist to ensure data confidentiality, authenticity and integrity. However, these solutions are ill-suited to sensors with severe resource constraints. Alternative solutions based mainly on symmetrical cryptographic systems have been proposed. However, these solutions, which are better suited to the resource constraints of RCSFs, shift the complexity onto the underlying key management function.

The omnipresence of sensors, their intrinsic fragility, mobility and heterogeneity all represent...