基于混沌RC5的传感器网络分组加密算法  

Block Encryption Algorithm Based on Chaos and RC5 in WSN

作　　者：蔡科[1] 左宪章[1] 方育奇[1] 

机构地区：[1]军械工程学院电气工程系,河北石家庄050003

出　　处：《计算机测量与控制》2009年第11期2249-2252,共4页Computer Measurement &Control

基　　金：国家自然科学基金(60672143);军队科研计划项目

摘　　要：加密算法是解决无线传感器网络安全问题的基础,由于无线传感器网络的特殊工作环境,以及网络节点体积小、存储空间少、运算能力低、能量少且不可复用等特点,给其安全保密提出了特殊的要求;根据无线传感器网络的特点设计了混沌RC5分组加密算法,算法利用整数混沌映射扩展密钥,同时加入线性同余序列扩大密钥空间,借用RC5的移位操作对明文加密,使用密文反馈修改控制参数,使子密钥和密文相关,有效抵抗明文攻击;通过仿真分析表明,该加密算法安全性能较高,适合无线传感器网络。Eneryption algorithm is the basis of solving the security of Wireless Sensor Networks. The net works in special environment, the node, with the characteristics of small bulk, the little memory resource, lower operation and little energy, can not be reused, the wire- less network thus has special requirements for the security. Designed block encryption algorithm based on chaos and RC5. Algorithm used in- teger chaotic map to extend the key, add linear congruent generators to extend key space; Encrypt plaintext by dint of shit operation in RC5 Change the control parameters by ciphertext feed back and so as to the sub--key is correlation with ciphertext. It is resistive to known plain --text type of attack effectively. The simulation results show that the security of the algorithm is high and fit for WSN.

关 键 词：混沌 分组加密 RC5 无线传感器网络 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]