Résumé: We develop a one-way function based key establishment framework for Wireless Sensor Networks (WSNs). The proposed framework allows sensors to establish pairwise session keys at an arbitrary network operation stage using pre-loaded one-way functions. We also present an efficient instantiation of the proposed framework using Cellular Automata (CA). The analysis based on the CA instantiation indicates that our framework possesses a number of nice properties: • inherent support for rekeying • quasi-perfect resilience against node compromise • computational efficiency • strong cryptographic strength of generated pairwise keys • a high probability to establish pairwise keys between sensors.

Langue: Anglais