期刊名称：International Journal of Distributed Sensor Networks
印刷版ISSN：1550-1329
电子版ISSN：1550-1477
出版年度：2015
卷号：2015
DOI：10.1155/2015/691498
出版社：Hindawi Publishing Corporation
摘要：With the wide adoption of wireless sensor network (WSN), security problems emerge as a challenging issue because of the limited computational power and energy of the sensor nodes. Furthermore, the deployment of WSN in the hostile area with a large number of nodes also poses a threat. In this paper, we proposed a new efficient key management scheme based on Elliptic Curve Cryptography (ECC) and AVL tree for large scale WSNs. In our scheme the Elliptic Curve Paillier Encryption (ECPE) cryptography is adopted for communication and the AVL tree is used to store the neighbors’ ID and public key. The number of keys used in our scheme is smaller than the proposed schemes as we store these keys using AVL tree to shorten the search time. Regular key updates are also designed to further improve the security of the whole network. Our scheme has a good scalability where the node addition and deletion are supported. Experimental results and analysis show our scheme can significantly reduce the energy consumed by the node and reduce the memory and computational overhead.
