A Packet Encryption Algorithm for Wireless Sensor Networks Against Leakage Attacks
As a complex dynamic system,chaos is similar to many characteristics in cryptography. The intrinsic random like property of chaos corresponds to pseudorandom sequences,and the extreme sensitivity of chaos to initial conditions and control parameters corre-sponds to the chaotic diffusion property of traditional ciphers. Based on these characteristics,a packet encryption algorithm for wireless sensor networks is proposed. The initial encryption of the group is completed based on the chaotic S-box method,and the sub secret key is generated. The CCA security key against the leakage attack is constructed to optimize the wireless sensor network group encryption. The encryption algorithm of the key is optimized by the way of algorithm input,and the encapsulated key space is defined. The security of CPA key is used to ensure the output of encryption key,which meets the requirements of wireless sensor networks to resist leakage at-tacks. The simulation results show that the information entropy value of the proposed method is always higher than 7.99,the execution time is always lower than 12.1 ms,and the required storage space is always lower than 126 bytes. The security performance and security effect are better,and the proposed method has higher practical application value.
万方数据
维普
