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http://dx.doi.org/10.13089/JKIISC.2018.28.4.987

HyperCerts : Privacy-Enhanced OTP-Based Educational Certificate Blockchian System  

Jung, Seung Wook (Konyang University)
Publication Information
Journal of the Korea Institute of Information Security & Cryptology / v.28, no.4, 2018 , pp. 987-997 More about this Journal
Abstract
Blockchain has tamper-free, so many applications are developing to leverage tamper-free features of blockchain. MIT Media Labs proposed BlockCerts, educational certificate blockchain System, to solve problems of legacy certificate verifications. Existing educational certificate blockchain Systems are based on public blockchain such as bitcoin, Ethereum, so any entity can participate educational institute in principal. Moreover, the exisitng educational certricate blockchain system utilizes the integrity of blockchain, but the confidentiality of the educational certificate is not provided. This paper propose a digital certificate system based on private blockchain, name HyperCerts. Therefore, only trusted entity can participate in the private blockchain network, Hyperledger, as the issuer of digital certificate. Furthermore, the practical byzantine fault tolerance is used as consensus algorithm, HyperCerts reduce dramatically the latency of issuing digital certificate and required computing power. HyperCerts stores the hash value of digital certificate into the ledger, so breach of personal information by malicious entity in the private blockchain is protected.
Keywords
Blockchain; Digital Educational Certificate; privacy; OTP;
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