適用於無線感測網路上動態金鑰管理協定

A Dynamic Key Management Protocol for Wireless Sensor Network

陳金鈴(Chin-Ling Chen) ； 李政達(Cheng-Ta Li)

《科學與工程技術期刊》 4卷2期 (2008/06) Pp. 43-50

https://doi.org/10.7117/JSET.200806.0043

摘要

近幾年來，無線感測網路廣泛地應用在許多領域上，例如：在無線感測網路中，當感測節點被佈置在敵方地區時，爲了能使感測節點間的傳輸更爲安全，必須要使用秘密的金鑰做爲它們之間的通訊。雖然現今已經有許多金鑰建立的方法被提出，且應用在各種類型的無線感測網路中，但在目前的方法中，大部份都是預先從金鑰池中選出m把金鑰，形成一個金鑰鏈，每個感測節點再使用這些金鑰鏈的金鑰來進行資料的加密。然而在傳送秘密金鑰時，這把秘密金鑰很容易暴露在傳送的路徑中。本文提出了一種動態金鑰管理協定，跟之前的方法比較，我們提出的方法可以提高金鑰的安全性，而且透過動態的更新金鑰，使得金鑰被猜中的機率降低，除此之外，透過我們所設計的協定，也可避免感測網路上被攻擊的情況發生。

關鍵字

無線感測網路 ； 金鑰管理 ； 安全性

並列摘要

Recently, wireless sensor networks have been extensively used in different domains. For example, if the wireless sensor node of such a network is disposed in an unfriendly area, a secret key must be used to protect the transmission between the sensor nodes. Although several methods for making the key have been proposed and already adopted in different types of networks, most of the existing methods involve pre-selecting m keys from a key pool to form a key chain. Then, the sensor nodes utilize the key in the chain to encrypt the data. However, a secret key can be easily exposed along the transmission path. This research proposes a dynamic key protocol that can improve the security of the key, compared with existing methods. Moreover, the dynamic update of the key can reduce the probability of its being correctly guessed. Furthermore, with this new protocol, an attack on the wireless sensor network can be avoided.

並列關鍵字

wireless sensor network ； key management ； security