Research On Key Management Scheme For Wireless Sensor Network

The wireless sensor network that generally deployed in a particular region, isconsisting of thousands of micro-sensors and collaboration between sensor nodes tomonitor the target area for collection of real-time monitoring and data. The sensornode is lack of physical security so vulnerable to malicious attack or damage, once thesensor network damaged may lead to disastrous consequences. So the networksecurity become more and more important.Encryption technology as an importantmeans of secure communication, the first problem is the management of key.In order to enhance the probability of common keys in neighbor nodes, reducewireless sensor networks resource cost and further enhance connectivity of wirelesssensor networks(WSNs),a key management scheme using matrix deployment andcommunication key for wireless sensor networks is proposed．In the scheme thenetwork use way of33matrix to distribute the keys so as to the neighbor nodeshave q common keys. In square grid using matrix deployment can enhance thethreshold of common keys and reduce redundancy keys in each of node. Theoreticstudies and figures of simulation show that the proposed scheme not only providesbetter performance in stored key numbers and security but also obtains up to100%reduction in connectivity.The scheme In order to reduce the storage cost of Wireless Sensor Network andlower the complexity of key management., a hybrid key management scheme basedECC is proposed.ECC is not only enhance the security but also realize the identityauthentication. At the same time we use counter and pseudo-random function torealize dynamic key update technique. In this scheme not only have better security butalso have greater improvement in communication overhead and storage saving...