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Voting System

The PunchScan. Voting System. Rick Carback, David Chaum, Jeremy Clark, Aleks Essex, Kevin Fisher, Ben Hosp, Stefan Popoveniuc, and Jeremy Robin. Related Notions. Voter Confidence Voter-Verifiable Integrity No trusted software Scaleable/Realistic (=inexpensive).

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Voting System

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  1. The PunchScan Voting System Rick Carback, David Chaum, Jeremy Clark, Aleks Essex, Kevin Fisher, Ben Hosp, Stefan Popoveniuc, and Jeremy Robin

  2. Related Notions • Voter Confidence • Voter-Verifiable Integrity • No trusted software • Scaleable/Realistic (=inexpensive)

  3. PunchScan Features all that are required in US • Polling place • Automated (rental computers) • Manual (ballot box or after automation fails) • Absentee (mail-in ballot) • Provisional ballots / any polling place • Disabilities • {Read or hear} and {mark or nudge a friend} • Indistinguishable ballots

  4. First Election Running Now • Specs published • All XML, JAVA, and SQL • Commits posted • Challenges from NASDAQ select half the commits to open • Audit the opened commits (separate software) • Polling places Romania, Crypto, Ottawa, Washington DC, Stanford • Final phase • Posting tally (and more) in clear • Challenges from NASDAQ • Final audit

  5. Top layer shown white, bottom layer yellow; • Single sheet folded to form two layers; • Unique serial number per ballot: 3853; • Candidates Joe and Fred, in a fixed order, • with randomized symbol next to each; • Holes in top layer expose independently randomized symbols on bottom layer. 3853 3853 3853             3853 3853 3853 3853 3853 Joe  Fred Joe Joe Joe  Fred Fred Fred   A simple ballot form Un-voted ballot Ink daub marks both layers (voted for Fred) Voted top layer Voted bottom layer

  6. 3853 a b b a 002 Joe Fred Encrypted Vote First flip or No-flip Cleartext Votes Candidate/ Front Labels Back/Hole Labels Vote Row Ballot Row Ballot Number Intermediate Flipped state Second flip or No-flip

  7. Encrypted Vote First flip or No-flip Cleartext Votes Candidate/ Front Labels Back/Hole Labels Vote Row Ballot Row Ballot Number Intermediate Flipped state Second flip or No-flip

  8. Encrypted Vote First flip or No-flip Cleartext Votes Candidate/ Front Labels Back/Hole Labels Vote Row Ballot Row Ballot Number Intermediate Flipped state Second flip or No-flip

  9. See punchscan.org

  10. Introduction “University student elections offer a uniquely focused setting for engaging students in nationally important, state-of-the-art security and privacy research/projects and course work.”

  11. Competition Timeline • Judges announced, applications accepted, rules detailed (September-October) • Advance payment to teams with posted designs judged to be qualified (January) • Second payment to teams in the running, on completion of election (by May) • Teams completing second phase awarded travel-reimbursed opportunity to compete at finals event for prizes for election demonstrated, presentations, and optional attacks on other submissions (June)

  12. Thank You vocomp.org

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