中国电信股份有限公司广东研究院;广州优亿信息科技有限公司;
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。
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基本信息:
DOI:
中图分类号:TN929.5;TP309
引用信息:
[1]阎占林,黄健文,黄健等.5G通信卡中SUCI隐私保护的研究[J].无线电工程,2020,50(04):269-275.
基金信息: