Design And Implementation Of Encrytion Algorithm Based On Wireless Sensor Networks

Because the technology of wireless sensor networks(WSN) is limited,there are many problem in WSN.For example,limited power,poor computing capability,easy to be attack,etc.As a result,there is no algorithm very suitable for WSN.To solve the problem,this paper put forward two encryption algorithm,which are designed for WSN,and can provide different security level.Firstly, identity based encryption(IBE) can effectively simplify the process of key generation, reduce the amount of communication, and enhance the security of WSN. In this paper, a new wireless sensor networks encryption algorithm based on WSN(WIBE)is proposed, which is according to the theory of IBE.WIBE is easy to be computed which avoid the shortcoming of traditional IBE algorithm.At the same time,WIBE algorithm improved a lot,and much better than traditional encryption algorithm for WSN.Practical network experiment and simulation experiment showed that, WIBE algorithm has the characteristics of low energy consumption, high security, and is suitable for WSN when using in the environment which need high security level.Secondly, this paper analyzes the CPK(combined public key) encryption algorithm.In this paper, CPK algorithm is improved to avoid problems of key leaking, collusion attacking when CPK applied in WSN,and put forward a new algorithm named WCPK(wireless sensor network based on the combined public key)algorithm.WCPK improved the process of key matrix' generating and using,which makes the key matrix more secure when using in WSN,and can effectively defend the attack of key eavesdropping.Practical network experiment and simulation experiment showed that,WCPK algorithm could effectively reduce energy consumption and can provide a high security level,WCPK is a lightweight encryption algorithm.WCPK algorithm is suitable for using in ordinary environment which with lower requirement in security and with higher requirement in networks' existing time.