通信卡作为移动用户的身份识别码和鉴权数据的载体,其安全是整个手机通信中的安全基础。2G、3G和4G通信中,卡片入网信息是由国际移动用户识别码(International Mobile Subscriber Identity,IMSI)提供,一般情况下,空口上不会出现IMSI,而...通信卡作为移动用户的身份识别码和鉴权数据的载体,其安全是整个手机通信中的安全基础。2G、3G和4G通信中,卡片入网信息是由国际移动用户识别码(International Mobile Subscriber Identity,IMSI)提供,一般情况下,空口上不会出现IMSI,而是临时移动用户标识(Temporary Mobile Subscriber Iedntity,TMSI)(IMSI初步加密),但当网络没有存储TMSI的时候,就需要用户将IMSI发送给网络,IMSI会暴露在空中接口从而被不法分子获取。5G通信中,为了保证安全,抵抗重放攻击,引入了用户永久标识符(Subscription Permanent Identifier,SUPI)、隐藏性用户标识符(Subscription Concealed Identifier,SUCI)的概念,SUPI类型分为IMSI和网络特定标识符(Network Specific Identifier,NSI)2种类型,加密后的SUPI即成为了SUCI,它作为用户身份识别码和鉴权数据及的载体,不让IMSI暴露在空口中,从而保证了终端和网络鉴权安全正常的进行。展开更多
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 tha...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.展开更多
文摘通信卡作为移动用户的身份识别码和鉴权数据的载体,其安全是整个手机通信中的安全基础。2G、3G和4G通信中,卡片入网信息是由国际移动用户识别码(International Mobile Subscriber Identity,IMSI)提供,一般情况下,空口上不会出现IMSI,而是临时移动用户标识(Temporary Mobile Subscriber Iedntity,TMSI)(IMSI初步加密),但当网络没有存储TMSI的时候,就需要用户将IMSI发送给网络,IMSI会暴露在空中接口从而被不法分子获取。5G通信中,为了保证安全,抵抗重放攻击,引入了用户永久标识符(Subscription Permanent Identifier,SUPI)、隐藏性用户标识符(Subscription Concealed Identifier,SUCI)的概念,SUPI类型分为IMSI和网络特定标识符(Network Specific Identifier,NSI)2种类型,加密后的SUPI即成为了SUCI,它作为用户身份识别码和鉴权数据及的载体,不让IMSI暴露在空口中,从而保证了终端和网络鉴权安全正常的进行。
基金the National Natural Science Foundation of China under Grant No.61172068,6137317 0.The Fundamental Research Funds for the Central Universities，Program for New Century Excellent Talents in University
文摘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.
