基于位置服务中单向哈希法隐私保护研究

Research on the Method of Privacy Preserving in location-based Service by One-way Hash

基于位置的服务(LBS)正在被越来越多的移动用户使用,用户的身份信息和位置信息也将暴露给服务提供商,从而可能导致用户的隐私被侵犯。提出了单向哈希方法,避免将用户的个人信息直接暴露给服务提供商;使用一种匿名方法,由匿名器将用户的真实位置信息和故意添加的虚假位置信息一齐发送给服务提供商,从而使服务提供商无法得知用户的真实位置,保护了用户的位置隐私。

Location based services （LBS） are being used by more and more mobile users,and the user＇s identity and location information will also be exposed to the service provider,which may lead to user privacy violations.The one-way hash method is used to avoid the user＇s identity information being directly exposed to the service provider;With an anonymous method,the anonymizer sends the user’s real location information and the deliberately-added false location information together to the service provider,so that service provider cannot know the true position and the user＇s location privacy is protected.