基于区块链的供应链数据分级访问控制机制

Blockchain-Based Supply Chain Data Hierarchical Access Control Mechanism

  • 摘要: 针对供应链企业与部门间存在数据共享程度低、访问透明性差以及隐私保护的问题,提出了一种基于区块链的供应链数据分级访问控制机制。设计了面向供应链场景的多链架构,实现供应链数据与访问控制信息的隔离存储;同时提出了基于分级属性和区块链的分级访问控制模型,及其智能合约的实现与部署,并针对某集采集配供应链业务进行了实例分析。实验表明该机制在大规模策略下,吞吐量仍维持在90 tps以上,策略判定时间开销平均为26 ms。

     

    Abstract: To address the low sharing degree, poor access transparency, and privacy preserving problems between supply chain enterprises and departments, this paper proposes a blockchain-based supply chain data hierarchical access control mechanism. A multi-chain architecture oriented to supply chain scenarios is designed to segregate the storage of supply chain data and access control information. A hierarchical access control model based on blockchain and hierarchical attributes is proposed and implemented as smart contracts. The efficacy of proposed mechanism is demonstrated through a case study of procurement and distribution supply chain. The experiment results show that the throughput of the mechanism still maintains above 90 tps under the large-scale policies, and the average time cost of the policy decision is 26 ms.

     

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