提出了一种基于密钥预分配无线传感器网络中的加密方案。方案在加密过程中使用了计数器和消息认证码,从而较好地满足了传感器网络安全需求。同时,考虑到传感器节点资源有限的特点,方案中相关协议和算法都比较简单,并完全避开了代价昂贵的公钥运算,从而使得方案计算、存储和通信开销都比较小,执行效率大大提高。 An encryption scheme based on key pre-distribution in wireless sensor networks is proposed. The scheme uses the counter and message authentication code in the encryption process, so as to better meet the sensor network security requirements. At the same time, taking into account the limited resources of sensor nodes, the protocols and algorithms in the scheme are relatively simple and completely avoid the costly public key operation, so that the calculation, storage and communication overhead of the scheme are relatively small, and the execution efficiency is greatly improved .