KEY RE-DISTRIBUTION METHOD AND SYSTEM OF DYNAMIC FILTERING UTILIZING ATTACK INFORMATION IN WSN

摘要

The present invention relates to a key redistribution method and system for a dynamic filtering technique using attack information in a wireless sensor network, the key distribution method comprising: (a) a key pre-distribution step in which a base station loads and distributes an authentication key and a secret key to each node; (b) the cluster head collecting the authentication keys of all the member nodes of each cluster along the routing path and transmitting an authentication message to the forwarding node; (c) the forwarding node further loads the authentication keys from the authentication message into the memory, verifies the false presence of the event report, discards the false report if it is detected as a false report, Counting and storing the number of reports; (d) transmitting a key redistribution request message to the base station if the count value exceeds a preset threshold value; And (e) the base station redistributing keys to each node in accordance with the key redistribution request message.