感測器網路之安全串流密碼設計

Abstract

無線微型感測器網路近來愈來愈受到重視，其主要的元件即為感測器。感測器是個輕巧短小、容易大量散佈的裝置，有著簡單的處理器以及特殊的感應器可以輕易的被程式化來收集相關物理性質的資料。除此之外，感測器具備有無線通訊的能力，透過無線電的傳輸以及Ad-hoc routing的機制可以將收集到的相關資訊即時、動態的傳送至後端的數據中心做進一步的分析處理。無線感測器網路的目的即是在建立一個通用、有效能、低花費以及容易散佈的感測器網路平台。在此網路平台，使用者將可快速且輕易的在感測器上開發各種應用。 無線微型感測器網路有網路安全問題，無線嵌入式應用程式包含許多已知，甚至是未知的安全漏洞，而利用這些漏洞所引發的攻擊事件也日漸頻繁，對於系統的安全更是一大隱憂，而今日無線微型感測器網路，其安全機制的發展受制於其計算及通訊平台考量，因此若要建立一系列相關的安全機制來防範攻擊，還需依整個系統平台的特性限制加以考量，我們將發展一套滿足感測器所有限制的串流密碼系統，然後把它應用到感測器中，我們將探討各種串流密碼系統，找出一套最適合應用在無線微型感測器網路的串流密碼系統。

There is more and more emphasis on Wireless Sensor Network in recent years. Sensor is a weightless device that is easy to be deployed and programmable to collect outward related information. Besides, the sensors also possess the communication ability transmitting the environmental information to the read-end data center. The objective of Wireless Sensor Networks is to build a sniffing network platform with the following features: ‘Efficiency’, ‘Low-cost’ and ‘Ease of deployment’. With this platform, we can develop rapidly and easily diverse applications. The Wireless Sensor Network has a network security problem. Wireless embedded system applications contain security flaws both known and unknown attacks that take advantage of these flaws have become ubiquitous. Protecting wireless embedded system applications from attacks requires the development of a suite of security related services, which are designed according to the constraints of wireless embedded platforms. We will develop the stream cipher to satisfy all constrains of sensors. We will explore all kinds of stream ciphers and find the fittest stream cipher to apply on Wireless Sensor Networks.