Permissioned Blockchain based Remote Electronic Examination

Authors

ÖZNUR KALKAR
İSA SERTKAYA

DOI

10.3906/elk-2105-204

Abstract

Recent coronavirus pandemic transformed almost all aspects of daily life including educational institutions and learning environments. As a result, this transformation brought remote electronic examination (shortly e-exam) concepts back into consideration. In this study, we revisit secure and privacy preserving e-exam protocol proposals and propose an e-exam protocol that utilizes decentralized identity-based verifiable credentials for proof of authentication and public-permissioned blockchain for immutably storing records. In regard to the previously proposed e-exam schemes, our scheme offers both privacy enhancement and better efficiency. More concretely, the proposed solution satisfies test answer authentication, examiner authentication, anonymous marking, anonymous examiner, question secrecy, question privacy, mark privacy, test verifiability, and mark verifiability properties.

Keywords

Electronic exams, e-exams, decentralized identity, verifiable credentials, security, privacy, permissioned blockchain

First Page

361

Last Page

375

Recommended Citation

KALKAR, ÖZNUR and SERTKAYA, İSA (2022) "Permissioned Blockchain based Remote Electronic Examination," Turkish Journal of Electrical Engineering and Computer Sciences: Vol. 30: No. 2, Article 3. https://doi.org/10.3906/elk-2105-204
Available at: https://journals.tubitak.gov.tr/elektrik/vol30/iss2/3