Efficient privacy protection method for traffic monitoring service of Internet of Vehicles

The invention discloses an efficient privacy protection method for traffic monitoring service of Internet of Vehicles, which is applied to a network environment consisting of a trusted third party, a traffic monitoring server, a map server and a vehicle, and comprises the following steps of: 1, registering the vehicle; 2, segmenting the path; 3, generating a position point set; 4, generating a real path set; 5, generating a confusion position; 6, generating query time; and 7, obtaining traffic information. Based on geographical indistinguishability, accurate, timely and effective traffic information can be provided for the driver while the position privacy and the identity privacy of the driver are protected. 本发明公开了一种面向车联网交通监测服务的高效隐私保护方法，是应用于由可信第三方、交通监测服务器、地图服务器及车辆所组成的网络环境中，并包括：1车辆注册；2路径分段3生成位置点集合；4生成真实路径集合；5生成混淆位置；6生成查询时间；7获得交通信息。本发明基于地理不可区分性在能够在保护司机位置隐私和身份隐私的同时为司机提供准确、及时有效的交通信息。