基于分级Merkle树的无线传感器网络广播认证策略

提出了一种分级Merkle树的广播认证策略,着重对其初始化参数的分配方法进行研究,该策略支持大规模的广播发送节点,有效的抑制了由此引起的参数认证时,节点计算量与内存消耗过度以及通信负载上升的问题。仿真结果表明,与已有广播认证策略相比,该策略在抗DoS攻击能力、参数认证成功率和错误恢复时延等方面都具有更优的性能。

Strategy for Broadcast Authentication in Wireless Sensor Networks Based on Hierarchical Merkle Tree

As broadcast is a basic data-transmission approach in wireless sensor networks, broadcast authentication possesses a very important position in the security mechanism of networks. Based on the Merkle tree broadcast authentication strategy, a strategy for hierarchical Merkle tree broadcast authentication was proposed, of which the distribution of initial parameters was discussed. The proposed strategy supports large-scale broadcast senders and reduces computation costs, memory consumption and communication overhead effectively. The simulation indicates that the new strategy can achieve better performance than the existing approaches in dealing with DoS attacks, the authentication rate and the failure recovery delay.