- 어떻게 적용되었는가?
-> 전자 투표 시스템에 블록체인 기술을 적용시킴.
투표 관련 정보 저장 방식을 중앙집중형에서 분사화 시스템으로 바꾸어 데이터가 분산 저장. - 어떤 문제를 해결하는가?
-> 투표 신뢰성에 대한 문제
-> 해킹에 대한 문제
-> 비밀투표 보장에 대한 문제 - 블록체인이 어떻게 해당 문제를 해결하는가?(블록체인의 특성)
-> 블록체인은 '분산원장'을 이용하는 기술로 모두가 일종의 디지털 계약서를 담은 원장을 보관하고 있기 때문에 거래 내용을 투명하게 살펴볼 수 있고, 거래에 대한 신뢰가 보장됨.
-> 거래 내용을 위변조 하고 싶다면 분산원장의 절반 이상을 위조 변조 해야하는데 참여자가 많은 국민 투표일수록 다수가 전체 거래 내역을 보유하고 있고 분산돼 있기 때문에 물리적인 해킹은 거의 불가능함.
-> 투표 정보를 암호화해 보장하는 '제트케이-스낙(zk-snark)'기술 개발되어 세 가지를 동시에 보장해줌- 블록에 들어가는 투표 정보를 입력하는 A라는 유권자가 진짜 시민이라는 것
- A가 단 한번 투표했다는 것
- 서버 측에서 A가 누구인지 알수 없게 감추는 것
- 동작방법
[제트케이-스낙 기술 적용한 블록체인 기반 전자투표 앱]
유권자가 앱을 다운 받고 자신을 입증하면 공개키와 개인키 부여받음
사용자들은 공개키만 선관위에 등록해 둠
등록하지 않은 개인키를 활용해 본인만의 시리얼 번호를 따로 생성하고, 이 시리얼 번호를 이용해 투표
선관위는 공개키를 통해 총 몇 명이 투표에 참여했는지 파악 가능
어떤 시리얼 번호가 '가'후보에게 투표했는지는 알 수 있지만 유권자는 본인만 아는 개인키로 숨어 있기 때문에 확인 불가능함
Congratulations @heewonkim! You have completed the following achievement on the Steem blockchain and have been rewarded with new badge(s) :
<table><tr><td><span><img src="https://images.hive.blog/768x0/https://steemitimages.com/60x60/http://steemitboard.com/notifications/firstpost.png" srcset="https://images.hive.blog/768x0/https://steemitimages.com/60x60/http://steemitboard.com/notifications/firstpost.png 1x, https://images.hive.blog/1536x0/https://steemitimages.com/60x60/http://steemitboard.com/notifications/firstpost.png 2x" /><td>You published your First Post <tr><td><span><img src="https://images.hive.blog/768x0/https://steemitimages.com/60x60/http://steemitboard.com/notifications/firstvoted.png" srcset="https://images.hive.blog/768x0/https://steemitimages.com/60x60/http://steemitboard.com/notifications/firstvoted.png 1x, https://images.hive.blog/1536x0/https://steemitimages.com/60x60/http://steemitboard.com/notifications/firstvoted.png 2x" /><td>You got a First Vote <p dir="auto"><sub><em><a href="https://steemitboard.com/@heewonkim" target="_blank" rel="noreferrer noopener" title="This link will take you away from hive.blog" class="external_link">Click here to view your Board of Honor<br /> <sub><em>If you no longer want to receive notifications, reply to this comment with the word <code>STOP <blockquote> <p dir="auto">Support <a href="https://steemit.com/@steemitboard" target="_blank" rel="noreferrer noopener" title="This link will take you away from hive.blog" class="external_link">SteemitBoard's project! <strong><a href="https://v2.steemconnect.com/sign/account-witness-vote?witness=steemitboard&approve=1" target="_blank" rel="noreferrer noopener" title="This link will take you away from hive.blog" class="external_link">Vote for its witness and <strong>get one more award!Congratulations @heewonkim! You have completed the following achievement on the Steem blockchain and have been rewarded with new badge(s) :
<table><tr><td><span><img src="https://images.hive.blog/768x0/https://steemitimages.com/60x60/http://steemitboard.com/notifications/firstpayout.png" srcset="https://images.hive.blog/768x0/https://steemitimages.com/60x60/http://steemitboard.com/notifications/firstpayout.png 1x, https://images.hive.blog/1536x0/https://steemitimages.com/60x60/http://steemitboard.com/notifications/firstpayout.png 2x" /><td>You got your First payout <p dir="auto"><sub><em><a href="https://steemitboard.com/@heewonkim" target="_blank" rel="noreferrer noopener" title="This link will take you away from hive.blog" class="external_link">Click here to view your Board of Honor<br /> <sub><em>If you no longer want to receive notifications, reply to this comment with the word <code>STOP <p dir="auto"><strong><span>Do not miss the last post from <a href="/@steemitboard">@steemitboard: <table><tr><td><a href="https://steemit.com/steemitboard/@steemitboard/5jrq2c-steemitboard-saint-nicholas-day" target="_blank" rel="noreferrer noopener" title="This link will take you away from hive.blog" class="external_link"><img src="https://images.hive.blog/768x0/https://steemitimages.com/64x128/http://i.cubeupload.com/mGo2Zd.png" srcset="https://images.hive.blog/768x0/https://steemitimages.com/64x128/http://i.cubeupload.com/mGo2Zd.png 1x, https://images.hive.blog/1536x0/https://steemitimages.com/64x128/http://i.cubeupload.com/mGo2Zd.png 2x" /><td><a href="https://steemit.com/steemitboard/@steemitboard/5jrq2c-steemitboard-saint-nicholas-day" target="_blank" rel="noreferrer noopener" title="This link will take you away from hive.blog" class="external_link">Saint Nicholas challenge for good boys and girls <blockquote> <p dir="auto">Support <a href="https://steemit.com/@steemitboard" target="_blank" rel="noreferrer noopener" title="This link will take you away from hive.blog" class="external_link">SteemitBoard's project! <strong><a href="https://v2.steemconnect.com/sign/account-witness-vote?witness=steemitboard&approve=1" target="_blank" rel="noreferrer noopener" title="This link will take you away from hive.blog" class="external_link">Vote for its witness and <strong>get one more award!Congratulations @heewonkim! You have completed the following achievement on the Steem blockchain and have been rewarded with new badge(s) :
<table><tr><td><span><img src="https://images.hive.blog/768x0/https://steemitimages.com/60x60/http://steemitboard.com/notifications/firstvote.png" srcset="https://images.hive.blog/768x0/https://steemitimages.com/60x60/http://steemitboard.com/notifications/firstvote.png 1x, https://images.hive.blog/1536x0/https://steemitimages.com/60x60/http://steemitboard.com/notifications/firstvote.png 2x" /><td>You made your First Vote <p dir="auto"><sub><em><a href="https://steemitboard.com/@heewonkim" target="_blank" rel="noreferrer noopener" title="This link will take you away from hive.blog" class="external_link">Click here to view your Board of Honor<br /> <sub><em>If you no longer want to receive notifications, reply to this comment with the word <code>STOP <blockquote> <p dir="auto">Support <a href="https://steemit.com/@steemitboard" target="_blank" rel="noreferrer noopener" title="This link will take you away from hive.blog" class="external_link">SteemitBoard's project! <strong><a href="https://v2.steemconnect.com/sign/account-witness-vote?witness=steemitboard&approve=1" target="_blank" rel="noreferrer noopener" title="This link will take you away from hive.blog" class="external_link">Vote for its witness and <strong>get one more award!Congratulations @heewonkim! You received a personal award!
You can view your badges on your Steem Board and compare to others on the Steem Ranking
Vote for @Steemitboard as a witness to get one more award and increased upvotes!