CLUSTERING-BASED DYNAMIC KEY MANAGEMENT METHOD BASED IN SENSOR NETWORK AND COMPUTER READABLE RECORDING MEDIUM THEREOF

摘要

The clustering base dynamic key managing method at the sensor network and the recording medium recording the same are provided to maximize the energy efficiency in the key redistribution process. The clustering base dynamic key management sensor network includes a plurality of sensor node(10) and sink node(20). The sensor node senses the information. The sink node collects the sensed information in the sensor node. Each sensor node has the only identifier. The sensor node stores the first secret key and pseudo random function as the secret information. The first secret key is used between the sink node and sensor node. The pseudo random function produces the random function by using ID and the first secret key of the sensor node. The sensor node distributes the key to the cluster unit.