Dynamic Key Management Scheme in Wireless Sensor Networks

The dynamic distribution key management scheme was proposed for wireless sensor networks. The shared seed key, node identifiers, package count and a random number were used to generate the dynamic distribution key. The seed key encrypts the distribution key, the data key was come from the distribution key, and the data key was used to encrypt the data. The cipher text of the distribution key and the cipher text of data were in one communication package. Only one distribution key was generated in one package and used only once. In this paper, the key management principle was introduced to produce distribution key and the confidential algorithm was introduced. The security of the distribution was analyzed. The test was done in wireless sensor networks. The result shows that the dynamic key management scheme is secure and feasible.