The Key Management Scheme In Wireless Sensor Networks

Wireless sensor network is a self-organizing network that is made of cheap sen-sor node, which characteristic are the mass, the self-organization, jumping, no infras-tructure support etc.The traditional key management mechanism is not applicable in wireless sensor network key management due to characteristic of the network;as a result, a lot of new shames are designed.we find that the scheme of key pre-distribution based on rational formal curve is a good plan in the process of consulting related paper. besides,The scheme also applies for patent.thus,we have conduct a simulation experiment,and the result can be followed:(1) The rate of secure connectionP is positively correlated to parameterq, com-munication radius R and the number of the nodesN,(2)Resistance on capture is also positively correlated to parameterq in the case of an ideal the rate of secure connection.(3)User can be set the number of the nodes N, q2(q3-1)≥N, parameters q and communication radius R by the application program that we make to get the rate of secure connectionP and resistance on capture ideally.(4)User can be concrete implement the scheme in accordance with the algorithm we make;Furthermore, the key management scheme based on pseudo random number gen-erator is designed in this paper,and the superior performance evaluation index can be followed:(1Connectivity:it is very easy to achieve high the rate of secure connection, which don’t need a third party node to help.(2)Resistance on capture:Resistance to capture is very strong, for example, in the case of each node average use30key, the probability that an arbitrary is affected by the compromise of one random node is very small,it is about0.0005;(3)Load Size:both storage and communication load are smaller than E Gscheme; (4)Scalability:the scheme support to join and delete the node;(5)Network Scale:the network will have hundreds of thousands of notes.