Application Research Of Elliptic Curves In Key Management Of WSN

As the rapid development of sensor technology, data processing and wireless communication technologies,the information is more and more important for everyone of us.And more and more are proposed to get the usefull imformation, wireless sensor networks are important one of them.It is becoming an anactive research area in the field of computer science and develops rapidly. With the wide application of wireless sensor networks, the security issue has been more and more attention. Key management is one of the most important part and the essential problem.It is to ensure secure transmission of data between nodes key.The current key management in wireless sensor networks based on symmetric encryption method based on multiple, but as the technology develops, these methods can not meet the demand for network security. Has been adopted in the optimization algorithm to non-symmetric encryption algorithm is applied to wireless sensor network key management, so network security is improved. In reading a lot relevant literature, on the basis of comparing asymmetric cryptosystem, elliptic curve cryptosystem is suitable for wireless sensor networks. This article mainly as follows:First,based on existing wireless sensor network key management, and to study the advantages and disadvantages of each scheme.Second,put forward a new kind of key management plan,The elliptic curve cryptosystem and Hash function is applied to wireless sensor networks of key management,The application of elliptic curve diffie-hellman encryption exchange produce node communication session keys,Increase the communication between nodes is safety. This scheme lowers the node calculation, save a space, increase the storage nodes between nodes on the network, China unicom probability of topology more convenient, and reduce the node energy consumption.Third,OMNET++ simulation tools used in conjunction node rate, captured and performance simulation experiment proves this scheme, the superiority.