Research On Reconfigurable Security Protocol Routing In Space Information Network

Space information network has many characteristics,such as node diversity,long time delay,open channel and high dynamic,which make space information network will be subject to more security threats in comparison with traditional networks.So in space information network,security issues get more and more attention.In order to make full use of network resources and network security reasonably,reconfigurable security protocol routing in space information network is proposed.Research on routing,security,and reconfigurable three aspects make the compromise between security and efficiency.Security protocol routing in space information network is being proposed.In space information network,the routing and security is refactored by the topology control,real-time control and security policy.In routing process,the space information network is divided into backbone network and the un-backbone network.In the backbone network,using the contact turn the dynamic routing into the static routing in order to improve the routing rate and Security.In the un-backbone network,using the on demand routing adjust the routing mechanism.Route the link with static allocation and dynamic adjustment.At the same time,Security has been put into the routing mechanism.Using the algorithm of ten modules prevent eavesdropping,forgery prevention,tamper-proof,wormhole and replay,through the selection of message.to the choice of different modules,It can found a balance between computation overhead and transmission overhead anonymous communication and tunnel protect against eavesdropping;Time difference algorithm with the method of wormhole position-confirming safeguard against wormhole;The improved AES/TDES encryption algorithm safeguard against forgery;MAC integrity verification and tampering with the serial number timestamp safeguard against the replay.This proposed algorithm can solve the problem in space information network,such as more overhead information,longer period hardware update and lower security controllability.The network simulation software NS2 was used to evaluate the proposed algorithm.Simulation results show that the proposed algorithm has a high detection rate and a low false rate.This algorithm can protect routing process from being attacked.