SAKURAI LABORATORY KYUSHU UNIVERSITY SAKURAI LABORATORY The Current State of Electronic Voting In Korea and Japan The Current State of Electronic Voting In Korea and Japan Asiacrypt 2003 Rump Session Kyushu Univ. JAPAN Yong-Sork HER, Kouichi SAKURAI 1/11

SAKURAI LABORATORY KYUSHU UNIVERSITY SAKURAI LABORATORY The latest voting ratio Korea Japan Date : Nov. 9, 2002 Voting ratio % Date : April 13, 2000 Voting ratio 57.2 % 2/11

SAKURAI LABORATORY KYUSHU UNIVERSITY SAKURAI LABORATORY Electronic-Voting To prevent the losses by the conventional voting system Using Network and cryptography techniques Automatic and fast voting procedure Untill it is realized the home–voting, Convenient place-voting…. 3/11

SAKURAI LABORATORY KYUSHU UNIVERSITY SAKURAI LABORATORY Korea From The Chosun Ilbo The Automatic Counting - In the Presidential-Election of Korea -Reduction of counting time for opening ballot 4/11

SAKURAI LABORATORY KYUSHU UNIVERSITY SAKURAI LABORATORY Japan Okayama on 23, June (2002) Niimi city : A mayoral and a municipal election Touch panel method like ATM (Automated-teller Machine) of BANK. General voter Absentee voter 5/11

SAKURAI LABORATORY KYUSHU UNIVERSITY SAKURAI LABORATORY Japan election law in Okayama election  Necessity - Japan election law : If an absentee voter died or the loss of the right of casting the ballot before Election Day, the ballot becomes an invalid ballot.  An Amendment of Japan’s election law (4. June,2003) Although an absentee voter died before election day, the ballot is a valid ballot. News 6/11

SAKURAI LABORATORY KYUSHU UNIVERSITY SAKURAI LABORATORY E-voting procedure Authentication Receive IC-card Inputs the IC card in voting terminal Voting Store the contents of voter 7/11

SAKURAI LABORATORY KYUSHU UNIVERSITY SAKURAI LABORATORY Analysis of Japan‘s e-voting Items The existed voting 1994 (Paper-voting) The existed voting 1994 (Paper-voting) The electronic Voting 2002 The electronic Voting 2002 Voting officer (43-voting place) 180-person178-person Counting officer85-person58-person Admission member （入会人 ) 13-person Counting time -Major -Councilman 3 hours 4 hours 25 minutes 25 minutes Invalid ballots -Major -Councilman Voting ratio92.06 %86.82 % Election costs\11,630,000\16,460,000 8/11

SAKURAI LABORATORY KYUSHU UNIVERSITY SAKURAI LABORATORY Analysis of Japan ‘s e-voting (Cont.) Candidate Group Candidate Group The ratio of votes obtained E-voting E-voting Existing voting Existing voting Candidate % 69.6 % Candidate 2 9 % 11.5 % Candidate 3 5 % 13.3 % Candidate % 5.6 % Total 100% 100% 100 % 100 % 9/11

SAKURAI LABORATORY KYUSHU UNIVERSITY SAKURAI LABORATORY Comparison of Korea and Japan In real election Reservation KOREA JAPAN VotingCounting Paper Voting E-voting 10/11

SAKURAI LABORATORY KYUSHU UNIVERSITY SAKURAI LABORATORY The E-voting will be realized in the future. Conclusion I think 11/11