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中文摘要：
采用可再生散列（Hash）密钥链机制增强无线自组织（Adhoc）网络中安全有效距离矢量路由SEAD协议的安全性．基于（t，n）门限方案，设计了一种新型的可再生Hash密钥链算法，每当发布当前链的一个Hash值，同时发布一个生成下一条Hash链所需要的子公钥；当Hash值发布t次以后，各验证节点能利用先前收集的各子公钥来验证新产生Hash链的链尾值数字签名的有效性，从而使得新链能正确使用，继续保障路由协议的可靠性．利用NS-2平台进行了仿真实验，并与赵源超等提出的2种Hash链可再生方案进行了性能比较．实验结果表明，所提方案具有更好的安全性，在cbr数据包发送率方面具有更高的成功率，并且在能效上也有一定改进．
英文摘要：
The regenerative Hash key chain mechanism is adopted for the secure routing protocol named as secure efficient distance vector routing （SEAD） in Ad hoc networks in order to enhance the security performance. Based on （t, n）-threshold scheme, a new regenerative Hash chain method is designed, in which as the sender sends one key value of the current Hash chain, and then it sends a shadow of public key of the new Hash chain as following. This method effectively verifies the signature of the tail value of the new Hash chain after receiving total t key values of the old Hash chain and simultaneously makes the new Hash chain to be used correctly continuing to ensure the routing protocol＇ s security and reliability. Compared with the two methods proposed by Zhao Yuanchao, NS-2 simulation shows that the method has higher security and success rate on transmission of cbr packets, makes some improvements on energy con- sumption at the same time.
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