CASTWED:卫星移动通信系统中一种结合可穿戴设备与智能终端的持续认证方案

摘要

智能手表、智能手环等各类可穿戴设备在世界范围内已经得到了迅猛发展.这些设备带有多种传感器,可以感知周围环境以及用户生物特征,同时可利用这些特征信息来持续认证持有智能终端的用户.然而,受限于卫星移动通信的低传输率以及身份认证过程中对于数据持续传输的需求,目前还没有在卫星移动通信系统中利用这些特征对用户进行持续身份认证的研究工作.为解决该问题,在卫星移动通信系统中,提出一个结合可穿戴设备与智能终端的持续认证方案(CASTWED),并对方案的安全性进行了理论分析.实验数据表明,CASTWED方案可以在支持10万用户并发访问的同时,仅需占用Ku波段60 Mbit/s的传输带宽.%Wearable devices,such as smart watches or smart bracelets,have been growing rapidly worldwide.These devices with various sensors have the ability to perceive the circumstance and user's biometric features,which can be used to continuously authenticate a user's identity.However,these features have not been studied to identify a specific user in mobile satellite communication system yet,due to its low data transfer rate and unacceptable delay.To solve this problem,continuous authentication combing smart terminal with wearable devices (CASTWED) was studied in mobile satellite communication system,the security of CASTWED was also theoretically analyzed.Simulation experiments show that the CASTWED scheme can provide simultaneous online authentication service for 100 000 users via 60 Mbit/s Ku wave band.