摘要
3G网络(3GPP)虽然采用了TMSI机制对IMSI进行保护,但仍然存在IMSI暴露的可能,对移动用户的信息安全造成了严重威胁。文中首先对IMSI泄露造成的威胁进行了分析,随后提出一种基于非对称密钥密码体制的IMSI保护方案,将IMSI加密保护与完整性保护、密钥管理等安全机制有机的结合,最后分析了该方案的安全性。
Though the TMSI system is employed to protect IMSI in 3G network （3GPP）, its exposure risk still exists and would lead to serious hidden trouble to information security of mobile phone user. This paper first analyzes the hidden trouble resulted from the IMSI exposure. Then, the IMSI protection proposal based on asymmetric-key cryptographic system is proposed, which combines integrity, key management and other security mechanisms. Finally, the security of the proposal is discussed.
出处
《通信技术》
2008年第9期152-154,共3页
Communications Technology
