| Presentation | 2019-03-08 A Decentralized Examination System using Public Blockchain Technologies Yusuke Kaneko, Shuntaro Tanaka, Tomoyuki Kimura, Jun Okumura, Shigeyuki Osada, Shigeyuki Azuchi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In the examination system for capability evaluation or the like, it is very difficult to detect errors or mistakes by test givers and scorers, since the correct/incorrect decision logic is often not undisclosed. In this paper, we propose a sustainable examination system with enhanced reliability and transparency by utilizing a public blockchain without centralized authority, and show an implementation example. In our proposed method, the hash value of the correct answer, the decision condition and the decision result are recorded in the blockchain which is practically impossible to be tampered with afterwards. We implemented our proposed method using Bitcoin Core and used it on over 100 people scale CTF(Capture The Flag) competition, and we confirmed it worked without any fatal issues in practical use. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | blockchain / correct/incorrect decision / examination system / Capture The Flag |
| Paper # | SITE2018-80,IA2018-72 |
| Date of Issue | 2019-02-28 (SITE, IA) |
| Conference Information | |
| Committee | IA / SITE / IPSJ-IOT |
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| Conference Date | 2019/3/7(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Grand XIV Naruto |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Internet and Information Ethics Education, etc. |
| Chair | Katsuyoshi Iida(Hokkaido Univ.) / Tetsuya Morizumi(Kanagawa Univ.) |
| Vice Chair | Rei Atarashi(IIJ) / Hiroyuki Osaki(Kwansei Gakuin Univ.) / Toru Kondo(Hiroshima Univ.) / Masaru Ogawa(Kobe Gakuin Univ.) / Takushi Otani(Kibi International Univ.) |
| Secretary | Rei Atarashi(Tokyo Metropolitan Univ.) / Hiroyuki Osaki(TOYOTA-IT) / Toru Kondo(NEC) / Masaru Ogawa(Tokyo Health Care Univ.) / Takushi Otani(Toyo Eiwa Univ.) |
| Assistant | Kenji Ohira(Tokushima Univ.) / Ryohei Banno(Tokyo Inst. of Tech.) / Hisanori Kato(KDDI Research) / Nobuyuki Yoshinaga(Yamaguchi Pref Univ.) / Daisuke Suzuki(Hokuriku Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Internet Architecture / Technical Committee on Social Implications of Technology and Information Ethics / Special Interest Group on Internet and Operation Technology |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Decentralized Examination System using Public Blockchain Technologies |
| Sub Title (in English) | |
| Keyword(1) | blockchain |
| Keyword(2) | correct/incorrect decision |
| Keyword(3) | examination system |
| Keyword(4) | Capture The Flag |
| 1st Author's Name | Yusuke Kaneko |
| 1st Author's Affiliation | Sumitomo Mitsui Financial Group(SMBC/JRI) |
| 2nd Author's Name | Shuntaro Tanaka |
| 2nd Author's Affiliation | Sumitomo Mitsui Financial Group(SMBC/JRI) |
| 3rd Author's Name | Tomoyuki Kimura |
| 3rd Author's Affiliation | Sumitomo Mitsui Financial Group(SMBC) |
| 4th Author's Name | Jun Okumura |
| 4th Author's Affiliation | HAW International(HAW) |
| 5th Author's Name | Shigeyuki Osada |
| 5th Author's Affiliation | The Japan Research Institute(JRI) |
| 6th Author's Name | Shigeyuki Azuchi |
| 6th Author's Affiliation | chaintope(chaintope) |
| Date | 2019-03-08 |
| Paper # | SITE2018-80,IA2018-72 |
| Volume (vol) | vol.118 |
| Number (no) | SITE-480,IA-481 |
| Page | pp.pp.233-238(SITE), pp.233-238(IA), |
| #Pages | 6 |
| Date of Issue | 2019-02-28 (SITE, IA) |