Research And Application Of Security Issues In Smart Community Systems

With the progressive development of smart community,the development of the smart community systems is becoming more and more mature.In the existing smart community systems,there are some security problems which need to be solved.Among them,the most two important problems are the data security of system resources and the transaction security of the real estate.How to protect the system resources from the spy of illegal users,how to effectively manage the access rights in the systems,how to accurately assign access rights to the user,how to ensure that the authenticity of housing information in the real estate transaction platform,and how to protect the security of real estate transactions,the content of this paper is to solve these problems.After research and compare related technolog,we finally decided to use access control mechanism to solve the data security of system resources,and to use block chain technology to solve the transactions security of real estate transactions.For the data security of system resources,we firstly compared and analyzed the existing classic access control model,and we found that the widely used role-based access control(RBAC)model is too coarse-grained for the smart community system,and the RBAC model wastes a lot of storage space,it also complex for administrators to manage the access rights.In this paper,we considered the access control requirements of the smart community syatems and designed a role-based access control model for categorized resource called CR-RBAC based on the RBAC model.The main idea of CR-RBAC model is classifying the resource of the system into different classes,then we can assign the access rights to users according to the classification of the resource,so we fulfil the security requirement of fine-grained access control in smart community system,well protected the system resources from illegal access.Finally,we applied our CR-RBAC model in the smart community system,and solved the data security problem of the system resources.For the transaction security protection of second-hand housing,we first analyzed the security requirements of second-hand housing transactions and found that the root causes of traps in the process of second-hand housing transactions is the untrustworthy information of the house,the information is maybe untrue.After research,we found that the blockchain technology can be a good solution to the unreliable information problem in second-hand housing transactions.Then,we designed the second-hand housing transaction platform based on the blockchain technology.Finally,according to the design of the second-hand housing transaction platform,we realized the platform in the smart community system based on the existing blockchain system,in this way,we solved the transaction security problem of the second-hand housing in the smart community system.Finally,we summarized our work,and also planed our following work in the future.We will try to apply our CR-RBAC model in the cloud environment and we also want to use block chain technology in the smart community systems more deeply.We have basically completed the research target of this paper,and we have made some contributions to the security protection in the smart community system.