Enforcing secured ECG transmission for realtime telemonitoring: A joint encoding, compression, encryption mechanism
Enforcing secured ECG transmission for realtime telemonitoring: A joint encoding, compression, encryption mechanism
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DOI：
10.1002/sec.44
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发表时间：
2008-09-01
影响因子：
--
通讯作者：
Khalil, Ibrahim
中科院分区：
文献类型：
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作者：
Sufi, Fahim;Khalil, Ibrahim
随着便携式采集设备和支持IP的移动电话的出现，对危重、急性和慢性患者的实时远程监测变得越来越流行。在远程监控过程中，大量的生理信号通过公共通信网络实时传输。然而，由于现有的远程监控实践忽略了隐私和安全要求，这些生理信号可以以最小的努力被截获。在本文中，为了实现端到端安全，我们首先提出了一种编码方法，能够通过隐藏心血管细节以及识别个体所需的心电数据特征，确保心电图（ECG）数据从采集设备传输到手机，然后从手机传输到集中式医疗服务器。该编码方法不仅隐藏了心血管状况，而且压缩比高达3.84，减小了庞大的心电文件大小，适用于能量受限的小型采集设备。针对心电数据在公共互联网上传输面临更大的安全漏洞，我们利用所提出的编码方法和现有的压缩加密工具，在手机上进一步设计并实现了3阶段编码-压缩-加密机制。这种新机制进一步提升了系统的安全强度。除了更高的安全性外，我们还实现了更高的压缩比，最高可达20.06，这将使传输速度更快，使系统适合实时远程监控。版权所有(C) 2008约翰威利父子有限公司
Realtime telemonitoring of critical, acute and chronic patients has become increasingly popular with the emergence of portable acquisition devices and IP enabled mobile phones. During telemonitoring, enormous physiological signals are transmitted through the public communication network in realtime. However, these physiological signals can be intercepted with minimal effort, since existing telemonitoring practise ignores the privacy and security requirements. In this paper, to achieve end-to-end security, we first proposed an encoding method capable of securing Electrocardiogram (ECG) data transmission from an acquisition device to a mobile phone, and then from a mobile phone to a centralised medical server by concealing cardiovascular details as well as features in ECG data required to identify an individual. The encoding method not only conceals cardiovascular condition, but also reduces the enormous file size of the ECG with a compression ratio of up to 3.84, thus making it suitable in energy constrained small acquisition devices. As ECG data transfer faces even greater security vulnerabilities while traversing through the public Internet, we further designed and implemented 3 phase encoding-compression-encryption mechanism on mobile phones using the proposed encoding method and existing compression and encryption tools. This new mechanism elevates the security strength of the system even further. Apart from higher security, we also achieved higher compression ratio of up to 20.06, which will enable faster transmission and make the system suitable for realtime telemonitoring. Copyright (C) 2008 John Wiley & Sons, Ltd.