基于区块链的私有数据多域访问权限控制方法

Blockchain-Based Multi Domain Access Control Method for Private Data

为了提高私有数据的安全性,提出区块链技术下私有数据多域访问权限控制方法。引入区块链技术,将访问权限控制划分为数据预处理、准备和执行三个阶段,在数据预处理阶段对数据展开降维处理,提高控制效率,通过基于引力搜索的数据聚类算法挖掘数据中的私有数据,以此实现针对性的访问控制;并在准备阶段中针对区块链事务中存在的访问控制策略,结合属性权限与属性之间的关系,对其展开形式化描述与管理;执行阶段的主要目的是对请求访问展开判断,根据判断结果执行相应的控制策略,同时对区块链中存在的多域访问权限控制策略展开更新,以此保证控制效果。仿真结果表明,所提方法可有效分类不同数据类型,其数据泄露风险较低,能够有效保障私有数据的安全性。

To enhance the security of private data,a method of multi-domain access control for private data based on blockchain was put forward.After introducing the blockchain technology,we divided the access control into three stages:data preprocessing,preparation,and execution.In the data preprocessing stage,we performed the dimensionality reduction on the data to improve control efficiency.Then,we mined the private data by the data clustering algorithm based on gravitational search,thus achieving the targeted access control.In the preparation stage,we performed the formal descriptions and management of access control strategies in blockchain transactions according to the relationships between attribute permissions and attributes.The main purpose of the execution stage was to make judgments on requested access.Then,based on the judgment results,corresponding control strategies were executed.At the same time,multi-domain access control strategies in the blockchain were updated to ensure control effectiveness.Simulation results show that the proposed method can effectively classify different data types with a low risk of data leakage,thus ensuring the security of private data.