在效能評估上，跟目前現有的節點撤銷機制比較，由於我們使用的是基於公開鑰匙密碼學的分散式投票節點撤銷機制，所以相對來說我們的計算成本是比較高的，但是我們使用了One-way Hash Function和XOR運算來降低投廢除票所需的能源消耗，所以新機制的能源消耗對於硬體能有限的微型感測器是能夠負荷的，並且本機制的安全性分析方面顯示出此機制對於被已入侵節點主動攻擊有較良好的抵禦能力，還有因為節點撤銷算是一個稀有發生的事情，它的安全性考量卻對整個網路來說非常重要，所以既然它是一個稀有發生的事情我們可以假設我們能夠提供更多計算頻寬資源來負擔，兩相比較之下此機制比較高的計算成本是我們可以接受的。 Wireless sensor network is composed of a large number of low-cost sensor nodes that are small in size and communicate untethered in short distances. The security issue in distributed sensor networks (DSNs) has been drawing considerable research attention in recent years. With the advance of technology, Public Key Cryptography (PKC) will sooner or later be widely used in wireless sensor networks. This thesis presents a based on One-way Hash Chain distributed voting way node revocation scheme which Base Station will sign the certificates to every node before deployment, and a certificate allows a node to prove that it is authorized to access some service such as data authenticate or node revocation.
Evaluation results show that when we compared with the other node revocation scheme because of what we used is based on PKC distributed voting way node revocation scheme, so calculation cost is comparatively higher. We exploit One-way Hash Function and XOR operation to reduce the energy consumption when casting a revocation vote. After that the energy consumption of new scheme is able to accept by hardware-constrained sensor node. The security analysis of this scheme shows that it has better ability to resistance the active adversaries. Node revocation is a rare happened event, but the security of it considers to be very important in the whole network. Since it is a rare happened event we can suppose that when it happens we can offer more calculation resources. According to previous discussions we can accept the higher calculation cost from our new scheme.
