Journal of the Korea Institute of Information and Communication Engineering (한국정보통신학회논문지)

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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Electronic Voting Systems Using the Blockchain

블록체인을 활용한 전자투표 시스템 구축

  • Lee, Roo-daa (Department of Computer Engineering, Sang-Myung University) ;
  • Lim, Joa-sang (Department of Human Intelligent Information Engineering, Sang-Myung University)
  • Received : 2018.06.15
  • Accepted : 2018.07.06
  • Published : 2019.01.31
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Abstract

Electronic voting has been followed by a lot of research as it provides convenience to voters and increases participation rates. Nevertheless, electronic voting has not been widespread yet. The existing electronic voting system does not guarantee credibility, and there arises a question on the security that the voting could be forged or altered by the attack to the central server. In this paper, we proposed blockchain based systems to solve the problems in electronic voting. Although the blockchain may guarantee the security of transaction data, there have been only a few electronic voting systems implemented using the blockchain. We developed blockchain enabled voting and brought out some of its related legal, technical and operational challenges to enforce more security in voting. Unlike centralized voting, the systems could enforce security and solve the problems such as forgery or alteration of transaction data caused by hacking or any attempts to gain control of the central server system.

전자투표는 유권자에게 편리성을 제공하고, 투표 참여율을 증가시킬 수 있다는 주장에 따라 많은 연구가 이어지고 있다. 그럼에도 불구하고 아직까지 전자투표가 널리 적용되지 못하고 있다. 기존의 전자투표 시스템은 투표의 신뢰성을 완전하게 보장하지 못하고, 서버에 대한 공격으로 위조나 변조될 수 있어 보안에 대해 의문이 제기되고 있다. 따라서 본 논문에서는 이러한 전자투표 시스템의 문제점을 해결하기 위해서 블록체인 기술을 제안한다. 블록체인은 거래 데이터의 안전을 보장해 주는 특징을 가진 기술임에도 불구하고 이를 기반으로 구현한 전자투표 시스템은 많지 않다. 이러한 점에 착안하여 본 논문은 블록체인을 기반으로 하는 이더리움 환경에서 전자투표 시스템을 구축했다. 또한 보다 안전한 투표를 시행하기 위해 법적, 기술 및 운영에 필요한 과제를 제시하였다. 구축된 시스템은 기존 중앙집중식 시스템과 달리 공격으로 인한 시스템 마비나 중앙서버시스템 장악으로 인한 거래데이터의 위변조와 같은 문제점을 해결하고 시스템 안전성을 보장할 수 있다.

Keywords

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Fig. 1 Block Structure

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Fig. 2 Merkel Tree Root

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Fig. 3 Voting Progress

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Fig. 4 Mining

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Fig. 5 Create an Address

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Fig. 6 Generated Block Structure

Table. 1 Development Environment

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Table. 2 Pseudocode of the Vote Function

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