A Consortium Blockchain-Based Secure and Trusted Electronic Portfolio Management Scheme
- Authors
- Merlec, Mpyana Mwamba; Islam, Md. Mainul; Lee, Youn Kyu; In, Hoh Peter
- Issue Date
- 1-Feb-2022
- Publisher
- MDPI
- Keywords
- consortium blockchain; e-portfolio management system; decentralized identifier (DID); smart contract; verifiable credentials (VC)
- Citation
- SENSORS, v.22, no.3
- Journal Title
- SENSORS
- Volume
- 22
- Number
- 3
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/32066
- DOI
- 10.3390/s22031271
- ISSN
- 1424-8220
1424-3210
- Abstract
- In recent times, electronic portfolios (e-portfolios) are being increasingly used by students and lifelong learners as digital online multimedia resumes that showcase their skill sets and achievements. E-portfolios require secure, reliable, and privacy-preserving credential issuance and verification mechanisms to prove learning achievements. However, existing systems provide private institution-wide centralized solutions that primarily rely on trusted third parties to issue and verify credentials. Furthermore, they do not enable learners to own, control, and share their e-portfolio information across organizations, which increases the risk of forged and fraudulent credentials. Therefore, we propose a consortium blockchain-based e-portfolio management scheme that is decentralized, secure, and trustworthy. Smart contracts are leveraged to enable learners to completely own, publish, and manage their e-portfolios, and also enable potential employers to verify e-portfolio credentials and artifacts without relying on trusted third parties. Blockchain is used as an immutable distributed ledger that records all transactions and logs for tamper-proof trusted data provenance, accountability, and traceability. This system guarantees the authenticity and integrity of user credentials and e-portfolio data. Decentralized identifiers and verifiable credentials are used for user profile identification, authentication, and authorization, whereas verifiable claims are used for e-portfolio credential proof authentication and verification. We have designed and implemented a prototype of the proposed scheme using a Quorum consortium blockchain network. Based on the evaluations, our solution is feasible, secure, and privacy-preserving. It offers excellent performance.
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