Key management and secure software updates in wireless process control environments
Dennis K. Nilsson, Tanya Roosta, Ulf Lindqvist, Alfonso Valdes · 2008
Process control systems using wireless sensor nodes are large and complex environments built to last for a long time. Cryptographic keys are typically preloaded in the wireless nodes prior to deployment and used for the rest of their lifetime. To reduce the risk of successful cryptanalysis, new keys must be established (rekeying). We have designed a rekeying scheme that provides both backward and forward secrecy.