StuChain: an efficient blockchain-based student e-portfolio platform integrating hybrid access control approach

【Author】 Zhao, Gang; He, Hui; Di, Bingbing; Chu, Jie

【Source】MULTIMEDIA TOOLS AND APPLICATIONS

【影响因子】2.577

【Abstract】Electronic portfolios are crucial means to evaluate the performance of students. However, the traditional student e-portfolio(SEP) system cannot meet the needs of guaranteeing students' information safety due to the system using centralized third-party storage. In addition, the SEP system involves multiple stakeholders and has an extreme volume of learning data, while the current access control model fails to satisfy the requirements of the SEP system. Blockchain technology provides a possible solution to the issues, while the massive data stored in the blockchain can cause congestion in the blockchain network. Therefore, we propose StuChain, an efficient blockchain-based SEP platform integrating a hybrid access control approach, to solve the above problems. Firstly, we design a hybrid access control model to manage and share student e-portfolio. Secondly, we propose to use blockchain technology to solve the security issue and design smart contracts to realize identity certification, recording, access control management, and sharing. Thirdly, we present an efficient storage approach, which achieves massive storage without threatening the system's efficiency. The student e-portfolio information is encrypted through the symmetric encryption scheme(AES-128), signed through the Edwards-curve digital signature algorithm (EdDSA), and recorded in the off-chain. We store the corresponding storage address and hash values in the blockchain. Finally, we conduct theoretical analysis and extensive experiments. Theoretical analysis demonstrates that our proposed approach outperforms other schemes. Experimental results show that our proposed StuChain can achieve secure and efficient storage, fine-grained access control, and our proposed system maintains high throughput.

【Keywords】Blockchain; Student e-portfolio; Access control; Hyperledger Fabric; Smart contract

【发表时间】2023 2023 MAY 15

【收录时间】2023-06-18

【文献类型】实验仿真

【主题类别】

区块链应用-实体经济-档案领域