Multi-layer Access Control Mechanism based on Blockchain for Mobile Edge Computing
Yichen Hou, Wenxin Liu, Hui Lin, Xiaoding Wang · 2020
Massive data generated by mobile terminals in edge computing brings new data security threats to data access control. However, previous access control strategies have deficiencies, i.e., coarse-graininess and poor flexibility, which cannot meet the requirements of secure data access to support various mobile edge computing applications. To overcome these shortcomings, in this paper, a Blockchain based Multi-layer Access Control mechanism, named BMAC, is proposed. Specifically, each resource data is assigned a security level. Then, an InfoMap based algorithm is developed to achieve credibility based users grouping. Next, a multi-blockchain is designed, based on which a flexible and fine-grained trusted data access control mechanism is established. The experiment results show that the BMAC scheme has better performance in terms of processing efficiency, throughput, CPU utilization, and latency.