Efficient LBS Security-Preserving Based on NTRU Oblivious Transfer

In vehicular environment, Location Based Services (LBS) are widely deployed to provide a service or a piece of information that is related to the location of a driver. Though a series of technologies, such as anonymity, mix zone or private information retrieval, can be exploited to protect the drivers position information, the data proprietorship is always ignored. In addition, since the embedded systems like Onboard Unit are generally recourse-constrained, efficient schemes are urgent for now. In this paper, we presented a novel oblivious transfer protocol based on Number Theory Research Unit Encryption and structured a security LBS scheme in terms of it. Comparing with Jannati and Bahrak's protocol, it is concluded that our scheme is more efficient and practical.