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CONSIDERATION OF SECURITY IN TELEHEALTH WIRELESS SENSOR NETWORK MONITORING SYSTEMS

机译：远程健康无线传感器网络监控系统中的安全性考虑

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Wireless sensor networks (WSNs) provide the potential for effective and cost efficient remote and ubiquitous health care monitoring as they are easy to install, robust and se-cure. By their nature, these WSNs use asynchronous com-munications to reduce transmission power and improve ef-ficiency. However this form of communication creates po-tential issues with the synchronization of the data received and stored by the telehealth system that they provide data to. This problem can be exacerbated if multiple sensors are employed, which is very likely due to the relatively low cost of such devices as well as the intended applications of these WSNs.rnTime synchronization is one essential component to maintain in the security of data transmission through wire-less sensor networks (WSN). Each individual node in a WSN contains a crystal clock. Although the natural fre-quency of each crystal clock remains relatively constant, the quality of the crystal and environmental factors such as temperature cause the frequency to drift over time. In order to ensure that each node maintains and broadcasts the same global time within the micro-second range, a time synchro-nization protocol must be implemented. Several protocols have been developed; however, none has been developed with security in mind. It is easy for a system error or even a malicious third party to compromise a node, causing faulty time sync messages to be sent into the network.rnThe Flooding Time Synchronization Protocol (FTSP) [5] is proposed to ensure time sychrony in the telehealh WSN. The FTSP is made up of several component modules written in nesC and has been implemented in the TinyOS [1] environment. TinyOS is an open source operating sys-tem developed specifically for network systems. In order to investigate the effects of injecting bad time synchroniza-tion messages into a WSN implemented with the FTSP, one or two nodes in a testbed of Telos motes (a mote beingrna remote wireless sensor) have been programmed to send faulty time sync messages. In order to determine the level of security of the FTSP, the resulting global time errors are recorded and evaluated.
机译：无线传感器网络（WSN）易于安装，坚固耐用且安全可靠，为有效，低成本地进行远程和无处不在的医疗监控提供了潜力。根据其性质，这些WSN使用异步通信来降低传输功率并提高效率。然而，这种形式的通信在其向其提供数据的远程医疗系统接收和存储的数据的同步方面产生了潜在的问题。如果使用多个传感器，则该问题可能会加剧，这很可能是由于此类设备的成本相对较低，以及这些WSN的预期应用所致。时间同步是维护有线数据传输安全性的重要组成部分。 -less传感器网络（WSN）。 WSN中的每个单独节点都包含一个晶体时钟。尽管每个晶体时钟的自然频率保持相对恒定，但是晶体的质量和环境因素（例如温度）会导致频率随时间漂移。为了确保每个节点在微秒范围内维持并广播相同的全局时间，必须实现时间同步协议。已经开发了几种协议。但是，在开发安全性方面都没有。系统错误甚至是恶意的第三方都很容易破坏节点，从而导致错误的时间同步消息被发送到网络中。rn提出了泛洪时间同步协议（FTSP）[5]，以确保远程健康中的时间同步。 WSN。 FTSP由用nesC编写的几个组件模块组成，并已在TinyOS [1]环境中实现。 TinyOS是专门为网络系统开发的开源操作系统。为了研究向FTSP实现的WSN中注入不良时间同步消息的影响，已对Telos Motes（mote berna远程无线传感器）测试台中的一个或两个节点进行了编程，以发送错误的时间同步消息。为了确定FTSP的安全级别，将记录并评估由此产生的全局时间错误。

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