Nakhoon Choi, Heeyoul Kim, Journal of Internet Computing and Services, Vol. 20, No. 6, pp. 119-127, Dec. 2019
10.7472/jksii.2019.20.6.119, Full Text:
Keywords: Blockchain, Ethereum, authentication, MetaMask, Personal Imformation, Decentralize

Abstract

This paper proposes a new authentication model to solve the problem of personal information takeover and personal information theft by service providers using centralized servers for user authentication and management of personal information. The centralization issue is resolved by providing user authentication and information storage space through a decentralize platform, blockchain, and ensuring confidentiality of information through user-specific symmetric key encryption. The proposed model was implemented using the public-blockchain Ethereum and the web-based wallet extension MetaMask, and users access the Ethereum main network through the MetaMask on their browser and store their encrypted personal information in the Smart Contract. In the future, users will provide their personal information to the service provider through their Ethereum Account for the use of the new service, which will provide user authentication and personal information without subscription or a new authentication process. Service providers can reduce the costs of storing personal information and separate authentication methods, and prevent problems caused by personal information leakage

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