Research On Privacy Protection In Social Opportunistic Network

The rapid development of social opportunity network provides the development of ad hoc networks in the future.Social opportunity networks have solved the problem that end-to-end connection or real-time connection cannot be achieved in ad hoc networks.In social context,the popularization of mobile smart phones provides a hardware basis for the application of social opportunity network.However,the development of social opportunity network also brings about the issue of privacy security.How to effectively protect users' privacy information in social opportunity network is one of the focuses of current research.This paper focuses on user privacy protection in social opportunity networks.Firstly,it analyzes the research status of privacy protection in social opportunity network,and esxplores the main research direction of privacy protection in social opportunity network.By introducing a variety of social opportunities network protocols,and analyze the content of users' privacy information exposed in social opportunity network,and further research on privacy protection in social opportunity networks.Finally,this paper briefly through the analysis of the privacy protection of privacy protection model to establish effective mechanism and the design of privacy protection scheme both to protect the privacy of user privacy.By analyzing privacy protection model to establish an effective privacy protection mechanism,this paper has designed two kinds of privacy protection model based on user behavior,discusses the impact of different privacy protection behaviors on social opportunity networks,It shows that the network performance can be guaranteed by adjusting the proportion of users' behaviors in the two privacy protection models.In order to design effective privacy protection scheme in social opportunity network,this paper analyzes two existing basic schemes based on encryption one by one hash function,and put forward the improved protocol based on the existing scheme to reduce the influence of privacy protection scheme for network performance,and effectively reduce the effect on the performance of network privacy protection scheme.For encryption hash function one by one the problem of privacy protection scheme can not effectively resist dictionary attacks,this article proposed the hash algorithm based on local sensitive Minhash privacy protection scheme and Simhash privacy protection scheme.Experiments show that Minhash privacy protection scheme and Simhash privacy protection scheme can protect the safety of users' privacy while keeping the normal performance of the community the opportunity to network,two kinds of schemes can calculate the similarity of original friends list,complete the correct routing decisions to keep the decisions of higher accuracy.In addition,Minhash and Simhash privacy protection schemes reduce the possibility of dictionary attack and effectively resist malicious attacks.