Design and Analysis of Novel Verifiable Voting Schemes Page: 24
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any way. While we do not cover the exact scheme for public bulletin board, there are
known algorithms ready for implementation [23].
Optical Scan Machine. An optical scan machine uses optical scanner to
recognize marks in an op-scan bubble on the ballot. In our scheme, the op-scan
machine should recognize the mark for an intended candidate, the position of the mark,
and marked confirmation code. Last two fields are immediately published on the public
bulletin board. We assume that the channel between bulletin board and op-scan
machine is secure. The actual vote is saved in secret on the memory device. Before
elections several procedures should be performed to ensure the security of the device.
The internals of the optical scan machine must be protected and sealed. The election
officials should carefully test the op-scan machine to verify that it works properly.
3.1.3 Voting
Figure 3.2 gives an overview of the scheme. The voter casts his or her vote by
putting a mark to an op-scan bubble opposite the name of the preferred candidate. In
the same way the voter marks a code. After the voter indicated his choice, he inserts a
ballot to an optical scanning machine. The machine records the voter's choice, position
of the candidate in an order and the code (ex: Candidate 1, position #2, code: fX14!
BNgYqPc)(Fig. 3.3). Later the voter separates the ballot into two pieces, he or she casts
the candidates part by putting it into a usual ballot box. The voter leaves the
verifications codes part as a receipt for possible audit (Fig. 3.4).
3.1.4 Tallying24
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Yestekov, Yernat. Design and Analysis of Novel Verifiable Voting Schemes, thesis, December 2013; Denton, Texas. (https://digital.library.unt.edu/ark:/67531/metadc407785/m1/29/: accessed July 17, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; .