Research On Real-Name Authentication And Data Access Control Of Internet Users Based On Blockchain Technology

With the rapid development of the mobile Internet,the various types of online applications have enriched people's lives,which brought a lot of convenience s and promoted the development of society.However,the development of the mobile Internet is accompanied by more and more threats to the security and privacy of user information.In an insecure network environment,the privacy of users ' personal data is being violated.Once the user's personal data is intercepted by malicious persons,the user may face a series of serious consequences of data leakage,su ch as property loss,identity theft,and even personal safety,etc.Besides property loss,privacy disclosure will also seriously affect the stability of society.Traditional ly,users' data is primarily protected by the service provider's privacy policy,however,it does not really protect the privacy of users' data.Generally,users' data can be divided into two types: private data and shared data,respectively.Specifically,private data leakage is mainly due to the fact that the data credentials provided during the user's real-name authentication process are held by too many service providers.The shared data leakage is mainly caused by the fact that users' shared data is stored on remote third parties,and users have little control over the use of data.With the users' increasing attention with respect to the privacy disclosure and the awareness of privacy protection,the demand for privacy protection is also increasing.This t hesis studies real-name authentication and data access control based on the requirement of privacy protection of users' data.In order to improve the data privacy protection system and reduce the risk of data privacy leakage,this thesis designs user-centered data privacy protection models,proposes a real-name authentication scheme that can protect users' private data privacy and an access control scheme for sharing data privacy.Through in-depth research on the root causes of data privacy disclosure,the thesis utilizes the cryptographic knowledge based on bilinear pairing and blockchain technology to design the real-name information verification model and the shared data access control model,including the design and implementation of system functions.The algorithm and model are theoretically analyzed and implemented to verify the feasibility of the model.The proposed model realizes the digital verification of the user's real name information in the real-name authentication model by combining the blockchain technology and the cryptography.The user's information can be verified in an encrypted form without providing additional credentials,hence the data privacy is protected;the user-centered data sharing is realized in the shared data access control model,and the users' data can only be obtained by the authorized requesters,reducing the possibility of sharing data leakage and protecting data privacy.The security and effectiveness of the proposed models are verified through security analysis and system performance evaluation.In summary,the proposed schemes and models in this thesis meet the privacy protection requirements of users' personal data,which has certain theoretical and practical values.