Design And Implementation Of Group Key Management Scheme Based On Mobile Ad-hoc Network

Mobile Ad-hoc netword is a special network which do not have the communication center and send messages by its self-organization.The key management is of great importance in this network.The basic theory of Ad-hoc network and fundamental structure as well as the research around this area during these years and the gordian knots of the securty is clearly stated in the first chapter.Public-key encryption algorithms have been analysed first,and compare to that, threshold RSA theory is been drawed forth,then this theory has been improved to a new algorithm which is based on threshold RSA theory but update the private key on regular incase the attacker can use several old parts of the private key to speculate the whole part.So there comes the secret sharing scheme meaning judging the validity by checking effectiveness of everyparts of private key.Main reaserch of the distributed key management scheme,especially the security of two typical distributed certificate authority is analyzed later as well as the design of group key management based on that theory. In four modular design, the threshold RSA theory is used and route chart is also used to clarify the working process.In the initialization modules,server create and dispense the struct stucertpair.In the certificate regeneration and private key regeneration module the woking process is explained in details and in certificate rescission module,there is a voting mechanism which has been put forward to implement thetrust management.The overall frame construction as well as simulation environment and Simulation Tool is then analysed followed by a traverse in computing the threshold key schemes with a solution.The safety performance is analysed and verified by a series of simulation result which clearly shows that the theme with DNS is much better.Furthermore, the theme basically relies much on the knots to deal with the computing problems so if it is taken into practice,low energy consumption is necessary to be taken into consideration.