A New Hybrid Cloaking System for Location Privacy

• Main Authors: Cheng-Chih Liu, 劉昶志
• Other Authors: 劉傳銘
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/cu23m7

碩士 === 國立臺北科技大學 === 資訊工程系研究所 === 98 === In recent years, Location-Based Service can easily provide people location status. On the contrary, the user query data would be exposed by attacker without protection. In order to protect the location query privacy, there proposed some solutions in past literatures. One is delivering the query with location to centralized cloaking server. It could blur the location of query user. With blur location information, the LBS query could be safe. The other is finding a neighbor query user to deliver query, so the attacker couldn’t figure out query user. While someone proposed a hybrid cloaking system – HiSC. It combined the advantage of Centralized cloaking and P2P cloaking. But, HiSC has less using balance on Centralized and P2P part, and high user move speed would make bad answer quality. Therefore, we provide a judgment of query answer quality so that we can know which cloaking system is better. To make good system balance and good query quality, we proposed a New Hybrid Cloaking System (HNCS) to achieve them, and the experiment proves NHCS has good react on system balance, and query answer quality.