Research And Application Of Online Social Network Access Control Based On Spatio-Temporal And Information Flow

The rapid development of the mobile Internet has spawned a large number of online social networking platforms and tools that are widely used.Access control technology,as a classic method for protecting the privacy and information security of social users,is constantly evolving with the time and space changes of social application needs and scenarios.However,there is currently no effective theoretical model of social spatiotemporal access control as a guide.Therefore,this article focuses on the user's access control requirements for new scenarios and new applications in the online social network environment.The main research contents and innovations are as follows:1.Establish an access control model based on time-space and information flow control in an online social network environment.First,an online social network access control model based on space-time and information flow control(ST-IFAC)is constructed,which takes into account time,space and information flow factors,and defines related entities and components under the model framework;second,defines Formal description of the model entities and components of the model,establish the spatio-temporal access control rules and grid-based information flow control rules under the online social network;then,describe the access control strategy for real-life application scenarios;Finally,through a real social The network platform Shareteches application experiment has verified the feasibility and effectiveness of the ST-IFAC model,which can be applied to the existing social network access control applications and modeling.2.Use the ACPT tool to verify the access control strategy.Use the ACPT tool developed by NIST in the United States to verify the proposed access control model based on space-time and information flow control,and generate test cases.Secondly,according to the access control strategy corresponding to the application scenario,the four scenario strategies are verified respectively to generate test cases.Finally,according to the verification results,the security of the ST-IFAC model is verified.Privacy protection under online social networks has become an urgent problem to be solved in online social network security.Based on the online social network environment,this topic studies the access control model based on time and space and information flow control,and comprehensively considers the time and space and online social network platforms.Based on information flow factors,an access control model suitable for online social networks is proposed to achieve more fine-grained user access and ensure user privacy.