传感器网络中一种基于编码的MAC生成算法

用于数据认证的消息验证码(MAC)在传统有线和无线网络已有广泛应用。然而，传统的MAC生成算法往往生成较长的MAC，并不适合带宽有限的传感器网络。因此，提出了一种适用于传感器网络的MAC生成算法。算法通过位运算和逻辑移位进行数据替换，从而得到与验证的数据长度无关的定长MAC，有效减小了MAC的数据传输量。理论分析及实验仿真表明新算法在保证安全性的同时具有更小的通信开销，是一种能量有效的算法。

Code-based MAC algorithm for sensor networks

Message Authentication Code(MAC) for data authentication has been widely applied in traditional wired and wireless networks.But MACs generated by the traditional algorithms are usually too long to be used in sensor networks.This paper proposed a new MAC algorithm which fit well the sensor networks.The algorithm is efficiently length-reduced compared with the traditional ones.It uses bitwise operation and shift logical for data substitution,and generates a length-fixed MAC.Extensive analyses and simulations show that the proposed algorithm can efficiently reduce the communication overhead with high security.