认知无线电网络中抗追踪用户攻击的隐式信道选择方案(英文)

For the discontinuous occupancy of primary users in cognitive radio networks(CRN),the time-varying of spectrum holes becomes more and more highlighted.In the dynamic environment,cognitive users can access channels that are not occupied by primary users,but they have to hand off to other spectrum holes to continue communication when primary users come back,which brings new security problems.Tracking user attack(TUA) is a typical attack during spectrum handoff,which will invalidate handoff by preventing user accessing,and break down the whole network.In this paper,we propose a Channel Selection Information Hiding scheme(CSIH) to defense TUA.With the proposed scheme,we can destroy the routes to the root node of the attack tree by hiding the information of channel selection and enhance the security of cognitive radio networks.     

认知无线电网络安全综述

认知无线电网络通过认知用户对无线环境的感知,获得频谱空洞信息,在不干扰主用户的前提下,伺机接入空闲频谱,从而满足更多用户的频谱需求,提高频谱资源的利用率,然而,也带来了前所未有的安全挑战。依托认知环,从数据信道、控制信道和终端设备三方面介绍其安全性所面临的问题,以及现有的解决方案,最后给出认知无线电网络的安全建议。     

大数据安全研究概述

大数据就是通过对海量数据进行分析来获得有巨大价值的产品和服务,或者是对现况的深刻理解。随着互联网/移动互联网、社交网络、物联网/传感器等技术的发展,大数据成为研究的热点问题。然而,大数据在收集、存储和使用过程中面临着诸多安全风险。从节点交互过程、分布式存储和协同计算、访问控制和隐私保护四个方面阐述了大数据技术在应用过程中的安全隐患,介绍了现有的安全保障措施并对其优缺点进行了分析,最后介绍了大数据技术在信息安全领域中的应用。