LBS Privacy Preserving Model and Security Analysis Based on Expanded Anonymous Server

10.3966/199115992017102805014

Peng-shou Xie；Tian-xia Fu；Jia Guo；Qi Wang

anonymous communication ； data encryption ； location based service ； privacy preserving

電腦學刊

28卷5期（2017 / 10 / 01）

155 - 161

英文

Considering the existence of privacy security threats in LBS, we designed a Expanded Anonymous Server based on traditional LBS system structure to protect privacy information. It use the fully homomorphic encryption method to ensure the safety of Anonymous Server; At the same time, the onion algorithm and asymmetric encryption methods are used to design an improved LBS privacy preserving model based on expanded anonymous server. The model ensures the user’s information is guaranteed to be not tampered or leaked. Using attack algorithm to detect the LBS preserving model and traditional LBS model, the security analysis shows that LBS preserving model can protect the user’s anonymous identity, location information and service content effectively in LBS.