hws/hw02.tex
author Christian Urban <christian dot urban at kcl dot ac dot uk>
Mon, 25 Nov 2013 20:31:01 +0000
changeset 137 6fc7de0f23ba
parent 109 b71ce151aba8
child 185 f10d905e947f
permissions -rw-r--r--
added HW 07

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\section*{Homework 2}

\begin{enumerate}
\item Voice voting is the method of casting a vote in the `open air' for everyone
present to hear. Which of the following security requirements do paper ballots 
satisfy better than voice voting? Check all that apply and give a brief explanation 
for your decision.

\begin{itemize}
\item[$\Box$] Integrity\bigskip\bigskip
\item[$\Box$] Enfranchisement\bigskip\bigskip
\item[$\Box$] Ballot secrecy\bigskip\bigskip
\item[$\Box$] Voter authentication\bigskip\bigskip
\item[$\Box$] Availability\bigskip\bigskip
\end{itemize}


\item Explain how an attacker can use chain voting in order to influence the outcome of a 
poll using paper ballots. 

\item Which of the following mechanisms help with defending against chain voting? Check all 
that apply. Give a brief reason for each defence that mitigates chain voting attacks.

\begin{itemize}
\item[$\Box$] Using a glass ballot box to make it clear there are no ballots in the box before the start of the election.
\item[$\Box$] Distributing ballots publicly before the election.
\item[$\Box$] Checking that a voter's ID (drivers license, passport) matches the voter.
\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.
\end{itemize}

\item What is the main difference between online banking and e-voting? 
(Hint: Why is the latter so hard to get secure?)

\end{enumerate}


\end{document}

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