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I am reading about "Bingo voting" (Wikipedia, Paper), and I'm not understanding how it is secure against a corrupt election authority.

If the election authority knows all the dummy votes $N_j^i$, can't it just look at any voter's ballot and tell who they voted for (by finding the candidate on the ballot whose vote is not a dummy vote)?

My question: does the election authority have to be trusted in order for people's votes to be secret from the authorities?

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  • $\begingroup$ Well, can you define the capabilities of the corrupt election authority? Does it contain access to the random number generator, observing the voting machine which is not open during the voting? $\endgroup$ – kelalaka Oct 14 '19 at 17:51
  • $\begingroup$ No, it just knows all the dummy votes @kelalaka $\endgroup$ – ATOMP Oct 14 '19 at 21:46
  • $\begingroup$ Thanks for your question -- I figured it out. I missed that the interactions with the voting machine are anonymous, so there's no way to link ballots with identities. $\endgroup$ – ATOMP Oct 14 '19 at 22:21
  • $\begingroup$ helper, would you mind answering your own question with the answer you inferred? $\endgroup$ – SEJPM Oct 15 '19 at 7:40

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