利用盲签名实现对3G位置隐私的保护

Using Blind Signature to Protect 3G Location Privacy

随着3G技术的深入发展,人们对服务提出了更高的要求,在合法用户获取相应服务的同时,还要保护好用户的隐私。论文主要目的是解决3G用户的位置隐私问题,通过使用一个授权的匿名身份来替代3G中用到的IMSI和TMSI,防止了用户身份和位置信息的暴露。文章采用盲签名来实现身份的隐藏,从而达到了保护位置信息的目的。匿名身份的独立性和基于应用层实现该协议达到了用户对位置隐私的完全控制。

With the development of 3G, we need not only to provide communication services for the granted users, but also to protect their privacy. This paper aims at solving location privacy for 3G users. Instead of IMSI and TMSI in 3G, an authorized anonymous id is employed to protect user＇s identity and location information. The key technique is blind signature, which is used to realize identity hiding and to protect location information. Moreover, because the anonymous id is independent and the proposed protocol is based on application layer, location privacy is completely controlled by the user.