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     6 \begin{document}

     7 

     8 \section*{Homework 4}

     9 

    10 \begin{enumerate}

    11 \item Voice voting is the method of casting a vote in the `open air' for everyone

    12 present to hear. Which of the following security requirements do paper ballots 

    13 satisfy better than voice voting? Check all that apply and give a brief explanation 

    14 for your decision.

    15 

    16 \begin{itemize}

    17 \item[$\Box$] Integrity\bigskip\bigskip

    18 \item[$\Box$] Enfranchisement\bigskip\bigskip

    19 \item[$\Box$] Ballot secrecy\bigskip\bigskip

    20 \item[$\Box$] Voter authentication\bigskip\bigskip

    21 \item[$\Box$] Availability\bigskip\bigskip

    22 \end{itemize}

    23 

    24 

    25 \item Explain how an attacker can use chain voting in order to influence the outcome of a 

    26 poll using paper ballots. 

    27 

    28 \item Which of the following mechanisms help with defending against chain voting? Check all 

    29 that apply. Give a brief reason for each defence that mitigates chain voting attacks.

    30 

    31 \begin{itemize}

    32 \item[$\Box$] Using a glass ballot box to make it clear there are no ballots in the box before the start of the election.

    33 \item[$\Box$] Distributing ballots publicly before the election.

    34 \item[$\Box$] Checking that a voter's ID (drivers license, passport) matches the voter.

    35 \item[$\Box$] Each ballot has a unique ID. When a voter is given a ballot, the ID is recorded. When the voter submits his or her ballot, this ID is checked against the record.

    36 \end{itemize}

    37 

    38 \end{enumerate}

    39 

    40 

    41 \end{document}

    42 

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