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Need the following

“The right of citizens of the United States to vote shall not be denied or abridged by the United States or by any state on account of [race, color, or previous condition of servitude, sex, reason of failure to pay any poll tax or other tax, age (above 18)]”  US Constitution

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Need the following

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  1. “The right of citizens of the United States to vote shall not be denied or abridged by the United States or by any state on account of [race, color, or previous condition of servitude, sex, reason of failure to pay any poll tax or other tax, age (above 18)]”  US Constitution “The people who cast the votes don’t decide an election the people who count the votes do” • Joseph Stalin

  2. Need the following Voter-verifiability: I can check that my own vote is in the (virtual) ballot box Universal verifiability: anyone can check that the ballot box is counted correctly Without: revealing anyone’s vote trusting polling machines/officials

  3. We also want To compare voting systems with respect to integrity and privacy To make verifiability accessible

  4. GW-VotingUniversal and voter-verifiable voting systems • Citizen Verified Voting 2004 • First non-commercial implementation • Inter-university system PunchScan* • Grand prize, VoComp 2007 • First to be used in binding election, 2007 • Inter-university system Scantegrity • only voter-verifiable system with familiar optical-scan user interface *with David Chaum, UMBC, UOttawa, UWaterloo with David Chaum, UMBC, UOttawa, UWaterloo, MIT, Newcastle Univ.

  5. GW-VotingVoting system properties: in progress • Possible to have both integrity and privacy? • What are the mathematical constraints? • How much privacy do voting system designs provide?

  6. GW-VotingAccessible voter-verifiability: in progress To provide voter verifiability for voters with disabilities

  7. Mock Election • What: Mock election for international students using Scantegrity • When: November 4th, 10 - 7pm • Where: H street terrace Marvin Center, GW 800 21st Street, N.W.

  8. Today we will demonstrate Scantegrity* *Developed in collaborationwith: David Chaum (chief inventor), UMBC, UOttawa, UWaterloo, MIT, Newcastle University

  9. 4711 President Alice Bob Carol David 4711

  10. K4W 4711 4711 The special pen used to mark the oval reveals a confirmation code for the marked candidate President Alice Bob K4W Carol The voter writes down the confirmation code David

  11. K4W 4711 4711 President Alice Bob Scanner K4W Ballot box Carol David

  12. 4711 K4W 4711

  13. 4711 K4W K4W

  14. “I promise to run the election correctly”

  15. Voters hold officials to their promises. Voters perform checks and balances for each cast vote.

  16. Check the election, not the equipment

  17. Software independent, Data dependent

  18. In God we trust, everyone else bring data

  19. Secure by design

  20. Research Directions • Use of Scantegrityin public elections • Pushing the envelope of voter-verifiability and usability/accessibility • Developing a performance evaluation framework for voting systems

  21. Thank you !

  22. Election Official: “I promise to run the election correctly” In Scantegrity, the promise is mathematical: “your confirmation code is in the box and will get decoded to your vote”

  23. Voters hold officials to their promises by checking if the confirmation code is online

  24. 4711 K4W Voters hold officials to their promises by deciding to audit a ballot instead of casting it. = Bob?

  25. Anyone can hold officials to their promises by double-checking the math

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