基于RC5加密算法的无线传感器网络安全通信协议实现技术

摘要

The rapid development of sensor network technology has attracted great concern. Since each sensor node has limited storage space, speed, signal transmission capacity and is generally used in harsh environment that is not suitable for human activity, and therefore we not only need to protect the sensor normal operation of the network, but also to maximize the integrity and confidentiality of transmitted information in practical applications and scientific research. In this paper, the basic theory of wireless sensor network was introduced, and then analyzed its security features, the existent security threats and special security objectives. Then, this paper concentrated on the detailed analysis of SNEP protocol in data confidentiality, integrity, two-party authentication, data freshness and communication between nodes. On the basis of this, RC5 encryption algorithm is given for achieving the SNEP protocol. The encryption algorithm was analyzed in detail. In the end, the demonstration program of RC5 algorithm was achieved.%随着传感器网络的广泛应用，世界上许多科学家的研究焦点越来越聚集于此。由于传感器的数据存储能力小、续航能力差、运行速度比较有限，且一般应用于不适合人类活动的恶劣环境中，因此，在实际应用和科研工作中，不仅要尽力保障传感器网络的正常运行，而且还要最大限度的提高传输信息的完整性和保密性。介绍了无线传感器网络的基本理论知识，分析了其安全问题的特点、存在的安全威胁以及特殊的安全目标。详细的分析了SNEP协议在数据机密性、完整性和点到点认证、新鲜性以及节点间通信的具体做法，在此基础上给出了适合SNEP协议实现的RC5加密算法，对加密算法做详细的分析并实现了算法的演示程序。