The Design And Implementation Of Cipher Key Management And Authentication System For Wireless Ad Hoc Network

Wireless Sensor Networks is a kind of static network system which is formed by a large number of cheap micro sensor nodes through a wireless,multi hop and self-organization.As an important sensing terminals of the Internet of things and Information physical system,the micro sensor nodes deployed in the monitoring area.The size of the deployment is increasing because of the application of popularization.Since the introduction of mobile node,Wireless Sensor Network has already changed from the traditional static network to dynamic network.Most traditional authentication scheme only used for static network and have a low efficiency compared with mobile node authentication.In addition,the traditional authentication is not suitable for large-scale wireless sensor network deployment.The effect is not very ideal for a wide rangeofad-hocnetwork.In the field of information security,CPK stands for Combined Public Key.CPK is a kind of encryption algorithm which generated large-scale cipher key with fewer and fewer resources.With the development of global informationization construction,the contradiction between security and development is increasing obviously.The new development ideas should be changed from negative passive protection to positive initiative governance.Through making the construction of high reliability network environment,we can not only promote the development,but also obtain the safe.This paper presents an authentication scheme based on elliptic curve encryption algorithm.The encryption software has been brought out on the basis of ECC theory and centralized on CPK algotighm.The scheme solved many existing problems of traditional authentication scheme such as low efficiency of the mobile node authentication and poor applicability in large-scale deployment of wireless sensor networks.The main listed as follows:1.Study on the key distribution and management based on the principle of CPK(Combined Public Key),This paper introduces a kind of encryption algorithm named CPK based on ECC and have a test on the performance and security.2.Making a research on hierarchical authentication scheme for mobile nodes in Wireless Sensor Networks based on double-factor combined public key.In addition,mobile node authentication scheme includes these stages such as:the mutual authentication in the cluster nodes and establishing a list of neighbor relations,the certification of mobile node initialization,the pre-certification of switching between mobile node cluster,the re-certification of switching between mobile node cluster.3.To test the system in the communication content protection,ensured safety.Analysis showed that mobile node authentication scheme on the basis of safety in the paper reduces the mobile node switching authentication delay but extends the effective working time of mobile nodes within the network,and improve the efficiency of the mobile node authentication.This scheme is suitable for the information encryption of the large-scale deployment of wireless ad hoc networks with low latency requirements.In this paper,the application scheme makes sure safety as the primary consideration not only it has obtained the breakthrough of authentication delay problem,but also the performance evaluation has been upgrading.Besides,it has grown rapidly in the aspect of authentication efficiency.