In pervasive computing environments, resources and services are usually provided by a variety of different suppliers with multiple computing devices and from heterogeneous networks. Accordingly  ,   various privacy protection methods with lots of privacy policies were used. Before some meaningful interaction starts or services offers, a certain level of trust must be established  , t  his trust establishment and communication process may involve privacy information exchange. Consequently, a me  thod     for   integrate the privacy protection methods   and deal with   privacy and trust tradeoff is necessary. In this paper, we propose a novel trust based privacy protection method   by   us  ing   a three levels trust based privacy protection model (TPPM)  .     O  ur main contributions include: (1) TPPM can integrate the   various   privacy protection methods and specify privacy policies; (2)   TPPM   can automatic make privacy disclose decision   with   achiev  ing   the goal of less privacy information loss and more trust gain during the trust establishment and the interaction process; (3)   o  ur method can be used in kinds of applications scenarios flexibly. Simulation results and analysis show our method can accomplish privacy preserving and fast trust establishment well.
['Feng Gao', 'Jingsha He', 'Shunan Ma']
Trust Based Privacy Protection Method in Pervasive Computing