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\documentclass[dvipsnames,14pt,t]{beamer}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\usepackage{../slides}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\usepackage{../graphics}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\usepackage{../langs}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\setmonofont[Scale=.88]{Consolas}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\newfontfamily{\consolas}{Consolas}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\hfuzz=220pt
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% beamer stuff
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\renewcommand{\slidecaption}{SEN 02, King's College London}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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%Bank vs Voting
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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%http://www.parliament.vic.gov.au/images/stories/committees/emc/2010_Election/submissions/13_VTeague_EMC_Inquiry_No.6.pdf
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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% first cyber attack
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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%http://investigations.nbcnews.com/_news/2013/03/18/17314818-cyberattack-on-florida-election-is-first-known-case-in-us-experts-say
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\newcommand{\bl}[1]{\textcolor{blue}{#1}}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\begin{document}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\begin{frame}[t]
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\frametitle{%
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\begin{tabular}{@ {}c@ {}}
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\\
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\LARGE Security Engineering (2)\\[-3mm]
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\end{tabular}}\bigskip\bigskip\bigskip
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\normalsize
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\begin{center}
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\begin{tabular}{ll}
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Email: & christian.urban at kcl.ac.uk\\
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Office: & S1.27 (1st floor Strand Building)\\
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Slides: & KEATS (also homework is there)\\
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\end{tabular}
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\end{center}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\end{frame}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\begin{frame}[c]
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\frametitle{\begin{tabular}{c}This Course is about\\[-2mm] ``Satan's Computer''\end{tabular}}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Ross Anderson and Roger Needham wrote:\bigskip
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\begin{bubble}[10cm]
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\small
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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``In effect, our task is to program a computer which gives
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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answers which are subtly and maliciously wrong at the most
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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inconvenient possible moment\ldots{} we hope that the lessons
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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learned from programming Satan's computer may be helpful
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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in tackling the more common problem of programming Murphy's.''
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\end{bubble}\\[30mm]
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\only<2>{
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\begin{textblock}{11}(3.5,12)
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\begin{tabular}{c}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\includegraphics[scale=0.12]{../pics/ariane.jpg}\\[-2mm]
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\footnotesize Murphy's computer
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\end{tabular}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\begin{tabular}{c}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\includegraphics[scale=0.15]{../pics/mobile.jpg}\;
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\includegraphics[scale=0.06]{../pics/pinsentry.jpg}\\[-2mm]
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\footnotesize Satan's computers
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\end{tabular}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\end{textblock}}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\end{frame}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\begin{frame}[c]
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\frametitle{Defence in Depth}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\begin{center}\small
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\pcode{urbanc:$6$3WWbKfr1$4vblknvGr6FcDeF92R5xFn3mskfdnEn...:...}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\end{center}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\begin{itemize}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\item hashes help when password databases are leaked
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\item salts help with protecting against dictionary attacks
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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and help people who have the same password on different sites\medskip
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\item but they do not protect against a focused attack against a single
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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password and also do not make poorly chosen passwords any better
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\end{itemize}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\end{frame}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\begin{frame}[c]
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\frametitle{Subtle Points}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\begin{itemize}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\item in our web-application the salt needed to remain secret;
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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in password files the salt is public\bigskip
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\item the NYT has the ``resource'' unlocked at first
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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and locks it depending on the cookie data
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\item our ``web-application'' has the resource locked at first,
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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and unlocks it depending on the cookie data
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\end{itemize}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\end{frame}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\begin{frame}[t]
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\frametitle{How to Salt?}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\begin{center}\tt\small
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\begin{tabular}{lcl}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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1salt & $\Rightarrow$ & 8189effef4d4f7411f4153b13ff72546dd682c69\\
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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2salt & $\Rightarrow$ & 1528375d5ceb7d71597053e6877cc570067a738f\\
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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3salt & $\Rightarrow$ & d646e213d4f87e3971d9dd6d9f435840eb6a1c06\\
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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changeset
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4salt & $\Rightarrow$ & 5b9e85269e4461de0238a6bf463ed3f25778cbba\\
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\end{tabular}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\end{center}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\begin{itemize}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\item in Unix systems: \texttt{hash(salt + password)}, or even
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\texttt{hash$^{\texttt{1500}}$(salt + password)}\smallskip\pause
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\item Bruce Schneier in cases messages are long: \\
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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instead of \texttt{m $\mapsto$ hash(m)},\\ use \texttt{m $\mapsto$ hash(hash(m) + m)}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\end{itemize}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\end{frame}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\begin{frame}[c]
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\frametitle{\Large\begin{tabular}{c}User-Tracking Without Cookies\end{tabular}}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Can you track a user {\bf without}:
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\begin{itemize}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\item Cookies
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\item JavaScript
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\item LocalStorage/SessionStorage/GlobalStorage
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\item Flash, Java or other plugins
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\item Your IP address or user agent string
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\item Any methods employed by Panopticlick\\
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\mbox{}\hfill $\rightarrow$ \textcolor{blue}{\url{https://panopticlick.eff.org/}}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\end{itemize}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Even when you disabled cookies entirely, have JavaScript turned off and use a VPN
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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service, and also \ldots
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\end{frame}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\begin{frame}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\frametitle{Verizon}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\mbox{}\\[-23mm]\mbox{}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\begin{center}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\includegraphics[scale=0.21]{../pics/verizon.png}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\end{center}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\vfill\footnotesize
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\url{http://webpolicy.org/2014/10/24/how-verizons-advertising-header-works}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\end{frame}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\begin{frame}[c]
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\frametitle{Web-Protocol}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
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\only<1->{
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\begin{textblock}{1}(2,2)
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\begin{tikzpicture}[scale=1.3]
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\draw[white] (0,0) node (X) {\includegraphics[scale=0.12]{../pics/firefox.jpg}};
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\end{tikzpicture}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\end{textblock}}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
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Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
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\only<1->{
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Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
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\begin{textblock}{1}(11,2)
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Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
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\begin{tikzpicture}[scale=1.3]
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Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
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\draw[white] (0,0) node (X) {\includegraphics[scale=0.15]{../pics/servers.png}};
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\end{tikzpicture}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
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\end{textblock}}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
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Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
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|
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\only<1->{
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Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
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\begin{textblock}{1}(5,2.5)
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Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
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\begin{tikzpicture}[scale=1.3]
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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changeset
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\draw[white] (0,0) node (X) {};
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\draw[white] (3,0) node (Y) {};
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Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
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\draw[red, ->, line width = 2mm] (X) -- (Y);
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Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
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\node [inner sep=5pt,label=above:\textcolor{black}{\small GET static.jpg}] at ($ (X)!.5!(Y) $) {};
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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\end{tikzpicture}
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Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
199 |
\end{textblock}}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
200 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
201 |
\only<2->{
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Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
202 |
\begin{textblock}{1}(5,6)
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
203 |
\begin{tikzpicture}[scale=1.3]
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Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
204 |
\draw[white] (0,0) node (X) {};
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
205 |
\draw[white] (3,0) node (Y) {};
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
206 |
\draw[red, <-, line width = 2mm] (X) -- (Y);
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Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
207 |
\node [inner sep=5pt,label=below:\textcolor{black}{\small ETag: 7b33de1}] at ($ (X)!.5!(Y) $) {};
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Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
208 |
\node [inner sep=5pt,label=above:{\includegraphics[scale=0.15]{../pics/tvtestscreen.jpg}}] at ($ (X)!.5!(Y) $) {};
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Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
209 |
\end{tikzpicture}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
210 |
\end{textblock}}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
211 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
212 |
\only<3->{
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
213 |
\begin{textblock}{1}(4.2,11)
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
214 |
\begin{tikzpicture}[scale=1.3]
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
215 |
\draw[white] (0,0) node (X) {};
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
216 |
\draw[white] (3,0) node (Y) {};
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
217 |
\draw[red, ->, line width = 2mm] (X) -- (Y);
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
218 |
\node [inner sep=5pt,label=above:\textcolor{black}{\small GET static.jpg ETag: 7b33de1}] at ($ (X)!.5!(Y) $) {};
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
219 |
\end{tikzpicture}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
220 |
\end{textblock}}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
221 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
222 |
\only<4->{
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
223 |
\begin{textblock}{1}(4.2,13.9)
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
224 |
\begin{tikzpicture}[scale=1.3]
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
225 |
\draw[white] (0,0) node (X) {};
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
226 |
\draw[white] (3,0) node (Y) {};
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
227 |
\draw[red, <-, line width = 2mm] (X) -- (Y);
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
228 |
\node [inner sep=5pt,label=below:\textcolor{black}{\small HTTP/1.1 304 (Not Modified)}] at ($ (X)!.5!(Y) $) {};
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
229 |
\end{tikzpicture}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
230 |
\end{textblock}}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
231 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
232 |
\end{frame}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
233 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
234 |
|
16
|
235 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
236 |
\begin{frame}[c]
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
237 |
\frametitle{Today's Lecture}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
238 |
\begin{center}
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
239 |
\begin{tabular}{ccc}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
240 |
\large online banking & \hspace{3mm}\large{}vs\hspace{3mm} & \large e-voting\\
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
241 |
\textcolor{gray}{solved} & & \textcolor{gray}{unsolved}\\
|
16
|
242 |
\end{tabular}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
243 |
\end{center}
|
16
|
244 |
|
185
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
245 |
\end{frame}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
246 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
16
|
247 |
|
|
248 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
189
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
249 |
\begin{frame}[c]
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
250 |
\frametitle{E-Voting}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
251 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
252 |
\begin{bubble}[9cm]
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
253 |
``Any electronic voting system should provide at least the same
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
254 |
security, privacy and transparency as the system it replaces.''
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
255 |
\end{bubble}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
256 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
257 |
\end{frame}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
258 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
259 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
260 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
261 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
262 |
\begin{frame}[t]
|
188
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
263 |
\frametitle{Voting as Security Problem}
|
16
|
264 |
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
265 |
What are the security requirements of a voting system?\bigskip
|
16
|
266 |
|
|
267 |
\begin{itemize}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
268 |
\item<2->Integrity
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
269 |
\item<3->Ballot Secrecy
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
270 |
\item<5->Voter Authentication
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
271 |
\item<6->Enfranchisement
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
272 |
\item<7->Availability
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
273 |
\end{itemize}
|
16
|
274 |
|
|
275 |
\only<2>{
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
276 |
\begin{textblock}{5.5}(8,5)
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
277 |
\begin{bubble}[5cm]\small
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
278 |
\begin{center}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
279 |
\begin{minipage}{4.5cm}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
280 |
\begin{itemize}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
281 |
\item The outcome matches with the voters' intend.
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
282 |
\item There might be gigantic sums at stake and need to be defended against.
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
283 |
\end{itemize}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
284 |
\end{minipage}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
285 |
\end{center}
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
286 |
\end{bubble}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
287 |
\end{textblock}}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
288 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
289 |
\only<4>{
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
290 |
\begin{textblock}{5.5}(8,5)
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
291 |
\begin{bubble}[5cm]\small
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
292 |
\begin{center}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
293 |
\begin{minipage}{4.5cm}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
294 |
\begin{itemize}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
295 |
\item Nobody can find out how you voted.
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
296 |
\item (Stronger) Even if you try, you cannot prove how you voted.
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
297 |
\end{itemize}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
298 |
\end{minipage}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
299 |
\end{center}
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
300 |
\end{bubble}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
301 |
\end{textblock}}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
302 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
303 |
\only<5>{
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
304 |
\begin{textblock}{5.5}(8,5)
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
305 |
\begin{bubble}[5cm]\small
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
306 |
\begin{center}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
307 |
\begin{minipage}{4.5cm}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
308 |
\begin{itemize}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
309 |
\item Only authorised voters can vote up to the permitted number of votes.
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
310 |
\end{itemize}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
311 |
\end{minipage}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
312 |
\end{center}
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
313 |
\end{bubble}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
314 |
\end{textblock}}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
315 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
316 |
\only<6>{
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
317 |
\begin{textblock}{5.5}(8,5)
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
318 |
\begin{bubble}[5cm]\small
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
319 |
\begin{center}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
320 |
\begin{minipage}{4.5cm}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
321 |
\begin{itemize}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
322 |
\item Authorised voters should have the opportunity to vote.
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
323 |
\end{itemize}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
324 |
\end{minipage}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
325 |
\end{center}
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
326 |
\end{bubble}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
327 |
\end{textblock}}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
328 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
329 |
\only<7>{
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
330 |
\begin{textblock}{5.5}(8,5)
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
331 |
\begin{bubble}[5cm]\small
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
332 |
\begin{center}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
333 |
\begin{minipage}{4.5cm}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
334 |
\begin{itemize}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
335 |
\item The voting system should accept all authorised votes and produce results in a timely manner.
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
336 |
\end{itemize}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
337 |
\end{minipage}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
338 |
\end{center}
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
339 |
\end{bubble}
|
16
|
340 |
\end{textblock}}
|
|
341 |
|
188
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
342 |
\end{frame}
|
16
|
343 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
344 |
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
345 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
346 |
\begin{frame}[t]
|
188
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
347 |
\frametitle{Problems with Voting}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
348 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
349 |
\begin{center}\large
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
350 |
\begin{tabular}{rcl}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
351 |
Integrity & vs. & Ballot Secrecy\bigskip\\
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
352 |
Authentication & vs. &Enfranchisement
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
353 |
\end{tabular}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
354 |
\end{center}\bigskip\bigskip\pause
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
355 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
356 |
Further constraints:
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
357 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
358 |
\begin{itemize}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
359 |
\item costs
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
360 |
\item accessibility
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
361 |
\item convenience
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
362 |
\item intelligibility
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
363 |
\end{itemize}
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
364 |
\end{frame}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
365 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
366 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
367 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
368 |
\begin{frame}[t]
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
369 |
\frametitle{Traditional Ballot Boxes}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
370 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
371 |
\begin{center}
|
199
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
372 |
\includegraphics[scale=2.5]{../pics/ballotbox.jpg}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
373 |
\end{center}\pause\bigskip
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
374 |
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
375 |
mechanical, but they need a ``protocol''
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
376 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
377 |
\end{frame}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
378 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
379 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
380 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
381 |
\begin{frame}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
382 |
\frametitle{Motives for E-Voting}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
383 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
384 |
\begin{itemize}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
385 |
\item 76\% of pensioners in the UK vote, but only 44\% of the under-25s\bigskip
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
386 |
\item convenience\bigskip
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
387 |
\item speed
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
388 |
\end{itemize}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
389 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
390 |
\end{frame}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
391 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
392 |
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
393 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
394 |
\begin{frame}[t]
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
395 |
\frametitle{E-Voting}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
396 |
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
397 |
\begin{itemize}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
398 |
\item The Netherlands between 1997 - 2006 had electronic voting
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
399 |
machines\\ \textcolor{gray}{(hacktivists had found: they can be
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
400 |
hacked and also emitted radio signals revealing how you voted)}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
401 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
402 |
\item Germany had used them in pilot studies\\ \textcolor{gray}{(in
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
403 |
2007 a law suit has reached the highest court and it rejected
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
404 |
electronic voting on the grounds of not being understandable by the
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
405 |
general public)}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
406 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
407 |
\item UK used optical scan voting systems in a few test polls, but
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
408 |
abandoned any wide deployment
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
409 |
\end{itemize}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
410 |
\end{frame}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
411 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
412 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
413 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
414 |
\begin{frame}[t]
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
415 |
\frametitle{E-Voting}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
416 |
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
417 |
\mbox{}\\[-12mm]
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
418 |
\begin{itemize}
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
419 |
\item US used mechanical machines since the 30s, later punch cards,
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
420 |
now DREs and optical scan voting machines
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
421 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
422 |
\item Estonia used in 2007 the Internet for national elections
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
423 |
\textcolor{gray}{(there were earlier pilot studies in other
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
424 |
countries)}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
425 |
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
426 |
\item India uses e-voting devices since at least
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
427 |
2003\\ \textcolor{gray}{(``keep-it-simple'' machines produced by a
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
428 |
government owned company)}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
429 |
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
430 |
\item South Africa used software for its tallying in the 1993
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
431 |
elections (when Nelson Mandela was elected) \textcolor{gray}{(they
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
432 |
found the tallying software was rigged, but they were able to
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
433 |
tally manually)}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
434 |
\end{itemize}
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
435 |
\end{frame}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
436 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
437 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
438 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
439 |
\begin{frame}[t]
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
440 |
\frametitle{E-Voting in Estonia}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
441 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
442 |
\begin{itemize}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
443 |
\item worlds first general election that used internet voting (2007)
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
444 |
\item builds on the Estonian ID card (a smartcard like CC)
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
445 |
\item Internet voting can be used before the election (votes can be changed an
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
446 |
unlimited amount of times, last vote is tabulated, you can even change your
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
447 |
vote on the polling day in person)
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
448 |
\item in the 2011 parliamentary election 24\% voted via Internet\bigskip\pause
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
449 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
450 |
\item needs to trust the integrity of voters' computers,
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
451 |
central server components and the election staff
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
452 |
\end{itemize}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
453 |
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
454 |
\end{frame}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
455 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
456 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
457 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
458 |
\begin{frame}[t]
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
459 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
460 |
\footnotesize
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
461 |
\lstinputlisting[language=Python,xleftmargin=0mm]{../progs/estonia.py}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
462 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
463 |
\begin{textblock}{5.5}(7.8,0.5)
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
464 |
\begin{bubble}[5cm]\small
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
465 |
from \url{https://github.com/vvk-ehk/evalimine/}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
466 |
\end{bubble}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
467 |
\end{textblock}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
468 |
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
469 |
\end{frame}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
470 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
471 |
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
472 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
473 |
\begin{frame}[t]
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
474 |
E-Voting in \textbf{Theory}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
475 |
\small
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
476 |
\begin{itemize}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
477 |
\item Alice prepares and audits a ballot, then casts an encrypted
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
478 |
ballot, which requires her to authenticate to a server.
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
479 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
480 |
\item A bulletin board posts Alice's name and encrypted ballot.
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
481 |
Anyone, including Alice, can check the bulletin board and find her
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
482 |
encrypted vote posted.
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
483 |
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
484 |
\item When the election closes, all votes are shuffled and the system produces
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
485 |
a non-interactive proof of a correct shuffling. (zero-knowledge-proofs)
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
486 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
487 |
\item After a reasonable complaint period to let auditors check the
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
488 |
shuffling, all shuffled ballots are decrypted, and the system provides
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
489 |
a decryption proof for each decrypted ballot. (zero-knowledge-proofs)
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
490 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
491 |
\item Perform a tally of the decrypted votes.
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
492 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
493 |
\item An auditor can download the entire election data and verify the
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
494 |
shuffle, decryptions and tally.
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
495 |
\end{itemize}
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
496 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
497 |
\end{frame}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
498 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
16
|
499 |
|
|
500 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
501 |
\begin{frame}[t]
|
188
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
502 |
\frametitle{A Brief History of Voting}
|
16
|
503 |
|
|
504 |
\begin{itemize}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
505 |
\item Athenians
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
506 |
\begin{itemize}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
507 |
\item show of hands
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
508 |
\item ballots on pieces of pottery
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
509 |
\item different colours of stones
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
510 |
\item ``facebook''-like authorisation
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
511 |
\end{itemize}\bigskip
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
512 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
513 |
\textcolor{gray}{problems with vote buying / no ballot privacy}\bigskip
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
514 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
515 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
516 |
\item French Revolution and the US Constitution got things ``started'' with
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
517 |
paper ballots (you first had to bring your own; later they were pre-printed by parties)
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
518 |
\end{itemize}
|
188
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
519 |
\end{frame}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
520 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
521 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
522 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
523 |
\mode<presentation>{
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
524 |
\begin{frame}[t]
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
525 |
\frametitle{\begin{tabular}{@ {}c@ {}}Ballot Boxes\end{tabular}}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
526 |
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
527 |
Security policies with paper ballots:
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
528 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
529 |
\begin{enumerate}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
530 |
\item you need to check that the ballot box is empty at the start of the poll / no false bottom (to prevent ballot stuffing)
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
531 |
\item you need to guard the ballot box during the poll until counting
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
532 |
\item tallied by a team at the end of the poll (independent observers)
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
533 |
\end{enumerate}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
534 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
535 |
\begin{center}
|
199
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
536 |
\includegraphics[scale=1.5]{../pics/ballotbox.jpg}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
537 |
\end{center}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
538 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
539 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
540 |
\end{frame}}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
541 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
542 |
|
107
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
543 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
544 |
\begin{frame}[c]
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
545 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
546 |
Which security requirements do paper ballots satisfy better than voice voting?\bigskip
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
547 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
548 |
\begin{itemize}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
549 |
\item Integrity
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
550 |
\item Enfranchisement
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
551 |
\item Ballot secrecy
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
552 |
\item Voter authentication
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
553 |
\item Availability
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
554 |
\end{itemize}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
555 |
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
556 |
\end{frame}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
557 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
107
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
558 |
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
559 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
560 |
\mode<presentation>{
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
561 |
\begin{frame}[t]
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
562 |
\frametitle{\begin{tabular}{@ {}c@ {}}Paper Ballots\end{tabular}}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
563 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
564 |
What can go wrong with paper ballots?
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
565 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
566 |
\only<2>{
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
567 |
\begin{center}
|
199
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
568 |
\includegraphics[scale=0.8]{../pics/tweet.jpg}\\
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
569 |
\footnotesize William M.~Tweed, US Politician in 1860's\\
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
570 |
``As long as I count the votes, what are you going to do about it?''
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
571 |
\end{center}}
|
16
|
572 |
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
573 |
\only<3>{
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
574 |
\medskip
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
575 |
\begin{center}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
576 |
\begin{minipage}{10cm}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
577 |
{\bf Chain Voting Attack}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
578 |
\begin{enumerate}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
579 |
\item you obtain a blank ballot and fill it out as you want
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
580 |
\item you give it to a voter outside the polling station
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
581 |
\item voter receives a new blank ballot
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
582 |
\item voter submits prefilled ballot
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
583 |
\item voter gives blank ballot to you, you give money
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
584 |
\item goto 1
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
585 |
\end{enumerate}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
586 |
\end{minipage}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
587 |
\end{center}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
588 |
}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
589 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
590 |
\end{frame}}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
591 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
592 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
593 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
594 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
595 |
\begin{frame}[t]
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
596 |
\frametitle{\Large Mechanical Voting Machines}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
597 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
598 |
\begin{itemize}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
599 |
\item<1-> Lever Voting Machines (ca.~1930 - 1990)
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
600 |
\only<1>{
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
601 |
\begin{center}
|
199
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
602 |
\includegraphics[scale=0.56]{../pics/leavermachine.jpg}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
603 |
\end{center}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
604 |
}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
605 |
\item<2->Punch Cards (ca.~1950 - 2000)
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
606 |
\only<2>{
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
607 |
\begin{center}
|
199
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
608 |
\includegraphics[scale=0.5]{../pics/punchcard1.jpg}\;\;
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
609 |
\includegraphics[scale=0.46]{../pics/punchcard2.jpg}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
610 |
\end{center}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
611 |
}
|
16
|
612 |
\end{itemize}
|
|
613 |
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
614 |
\end{frame}
|
16
|
615 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
616 |
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
617 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
618 |
\mode<presentation>{
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
619 |
\begin{frame}[t]
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
620 |
\frametitle{\begin{tabular}{@ {}c@ {}}Electronic Voting Machines\end{tabular}}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
621 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
622 |
\begin{center}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
623 |
\begin{tabular}{c}
|
199
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
624 |
\includegraphics[scale=0.45]{../pics/dre1.jpg}\;
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
625 |
\includegraphics[scale=0.40]{../pics/dre2.jpg}\\\hline\\
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
626 |
\includegraphics[scale=0.5]{../pics/opticalscan.jpg}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
627 |
\end{tabular}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
628 |
\end{center}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
629 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
630 |
\only<1->{
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
631 |
\begin{textblock}{5.5}(1,4)
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
632 |
DREs
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
633 |
\end{textblock}}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
634 |
\only<1->{
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
635 |
\begin{textblock}{5.5}(1,11)
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
636 |
Optical Scan
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
637 |
\end{textblock}}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
638 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
639 |
\only<2>{
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
640 |
\begin{textblock}{5.5}(0.5,14.5)
|
188
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
641 |
\small all are ``computers''
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
642 |
\end{textblock}}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
643 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
644 |
\end{frame}}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
645 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
16
|
646 |
|
|
647 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
648 |
\mode<presentation>{
|
|
649 |
\begin{frame}[c]
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
650 |
\frametitle{\begin{tabular}{@ {}c@ {}}DREs\end{tabular}}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
651 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
652 |
Direct-recording electronic voting machines\\
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
653 |
(votes are recorded for example on memory cards)
|
16
|
654 |
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
655 |
typically touchscreen machines
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
656 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
657 |
usually no papertrail
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
658 |
|
16
|
659 |
\begin{center}
|
199
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
660 |
\includegraphics[scale=0.56]{../pics/dre1.jpg}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
661 |
\end{center}
|
16
|
662 |
|
|
663 |
|
|
664 |
\end{frame}}
|
|
665 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
666 |
|
|
667 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
668 |
\mode<presentation>{
|
|
669 |
\begin{frame}[c]
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
670 |
\frametitle{\begin{tabular}{@ {}c@ {}}Diebold Machines\end{tabular}}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
671 |
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
672 |
Alex Halderman:
|
16
|
673 |
|
|
674 |
\begin{itemize}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
675 |
\item acquired a machine from an anonymous source\medskip
|
107
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
676 |
\item they try to keep secret the source code running the machine\medskip\pause
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
677 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
678 |
\item first reversed-engineered the machine (extremely tedious)
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
679 |
\item could completely reboot the machine and even install a virus that infects other Diebold machines
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
680 |
\item obtained also the source code for other machines
|
16
|
681 |
\end{itemize}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
682 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
683 |
\end{frame}}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
684 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
685 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
686 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
687 |
\mode<presentation>{
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
688 |
\begin{frame}[c]
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
689 |
\frametitle{\begin{tabular}{@ {}c@ {}}Diebold Machines\end{tabular}}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
690 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
691 |
What could go wrong?\pause \;\;Failure-in-depth.\bigskip\pause
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
692 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
693 |
A non-obvious problem:
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
694 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
695 |
\begin{itemize}
|
188
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
696 |
\item you can nowadays get old machines, which still store old polls\medskip
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
697 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
698 |
\item the paper ballot box needed to be secured during the voting until counting;
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
699 |
e-voting machines need to be secured during the entire life-time
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
700 |
\end{itemize}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
701 |
|
16
|
702 |
\end{frame}}
|
|
703 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
704 |
|
|
705 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
706 |
\mode<presentation>{
|
|
707 |
\begin{frame}[c]
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
708 |
\frametitle{\begin{tabular}{@ {}c@ {}}Paper Trail\end{tabular}}
|
18
|
709 |
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
710 |
Conclusion:\\ Any electronic solution should have a paper trail.
|
18
|
711 |
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
712 |
\begin{center}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
713 |
\begin{tabular}{c}
|
199
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
714 |
\includegraphics[scale=0.5]{../pics/opticalscan.jpg}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
715 |
\end{tabular}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
716 |
\end{center}\pause
|
18
|
717 |
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
718 |
You still have to solve problems about
|
107
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
719 |
voter registration, voter authentication, guarding against tampering
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
720 |
|
18
|
721 |
\end{frame}}
|
|
722 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
723 |
|
|
724 |
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
725 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
726 |
\mode<presentation>{
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
727 |
\begin{frame}[c]
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
728 |
\frametitle{\begin{tabular}{@ {}c@ {}}E-Voting in India\end{tabular}}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
729 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
730 |
Their underlying engineering principle is ``keep-it-simple'':
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
731 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
732 |
\begin{center}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
733 |
\begin{tabular}{c}
|
199
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
734 |
\includegraphics[scale=1.05]{../pics/indiaellection.jpg}\;\;
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
735 |
\includegraphics[scale=0.40]{../pics/india1.jpg}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
736 |
\end{tabular}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
737 |
\end{center}\medskip\pause
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
738 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
739 |
Official claims: ``perfect'', ``tamperproof'', ``no need for technical improvements'' , ``infallible''
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
740 |
\end{frame}}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
741 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
742 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
743 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
744 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
745 |
\begin{frame}[c]
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
746 |
\frametitle{\begin{tabular}{@ {}c@ {}}Lessons Learned\end{tabular}}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
747 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
748 |
\begin{itemize}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
749 |
\item keep a paper trail and design your system to keep this secure\medskip
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
750 |
\item make the software open source (avoid security-by-obscurity)\medskip
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
751 |
\item have a simple design in order to minimise the attack surface
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
752 |
\end{itemize}\pause
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
753 |
|
188
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
754 |
But overall, in times of NSA/state sponsored cyber-crime, e-voting is
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
755 |
too hard with current technology.
|
106
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
756 |
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
757 |
\end{frame}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
758 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
759 |
|
107
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
760 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
761 |
\begin{frame}[c]
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
762 |
\frametitle{\Large Online Banking vs.~E-Voting}
|
107
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
763 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
764 |
\begin{itemize}
|
188
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
765 |
\item online banking: if fraud occurs you try to identify who did
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
766 |
what (somebody's account got zero)\bigskip
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
767 |
\item e-voting: some parts can be done electronically, but not the
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
768 |
actual voting
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
769 |
\end{itemize}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
770 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
771 |
\end{frame}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
772 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
773 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
774 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
775 |
\begin{frame}[c]
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
776 |
\frametitle{Student In-Lecture Polling}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
777 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
778 |
\begin{center}
|
199
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
779 |
\includegraphics[scale=0.3]{../pics/clicker.png}
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
780 |
\end{center}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
781 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
782 |
\begin{itemize}
|
188
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
783 |
\item can guarantee anonymity
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
784 |
\item integrity by electronic means\bigskip
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
785 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
786 |
\item how to achieve the same in ``software''?
|
107
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
787 |
\end{itemize}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
788 |
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
789 |
\end{frame}
|
107
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
790 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
791 |
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
792 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
793 |
\begin{frame}[c]
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
794 |
\frametitle{Anonymity}
|
107
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
795 |
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
796 |
\begin{itemize}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
797 |
\item anonymity through one-time pads
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
798 |
\begin{center}
|
199
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
799 |
\includegraphics[scale=0.3]{../pics/tan.jpg}
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
800 |
\end{center}\bigskip\pause
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
801 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
802 |
\item solving the problem of distribution
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
803 |
\begin{center}
|
199
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
804 |
\includegraphics[scale=0.3]{../pics/bulletin.jpg}
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
805 |
\end{center}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
806 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
807 |
\end{itemize}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
808 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
809 |
\end{frame}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
810 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
18
|
811 |
|
|
812 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
813 |
\mode<presentation>{
|
|
814 |
\begin{frame}[c]
|
16
|
815 |
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
816 |
\begin{center}
|
199
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
817 |
\includegraphics[scale=0.56]{../pics/Voting1.png}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
818 |
\end{center}
|
16
|
819 |
|
|
820 |
|
|
821 |
\end{frame}}
|
|
822 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
823 |
|
|
824 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
825 |
\mode<presentation>{
|
|
826 |
\begin{frame}[c]
|
|
827 |
|
|
828 |
\begin{center}
|
199
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
829 |
\includegraphics[scale=0.56]{../pics/Voting2.png}
|
16
|
830 |
\end{center}
|
|
831 |
|
|
832 |
|
|
833 |
\end{frame}}
|
|
834 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
835 |
|
|
836 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
837 |
\mode<presentation>{
|
|
838 |
\begin{frame}[c]
|
|
839 |
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
840 |
\begin{center}
|
199
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
841 |
\includegraphics[scale=0.56]{../pics/Voting3.png}
|
105
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
842 |
\end{center}
|
16
|
843 |
|
|
844 |
|
|
845 |
\end{frame}}
|
|
846 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
847 |
|
|
848 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
849 |
\mode<presentation>{
|
|
850 |
\begin{frame}[c]
|
|
851 |
|
|
852 |
\begin{center}
|
199
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
853 |
\includegraphics[scale=0.56]{../pics/Voting4.png}
|
16
|
854 |
\end{center}
|
|
855 |
|
|
856 |
|
17
|
857 |
\end{frame}}
|
|
858 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
187
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
859 |
|
17
|
860 |
|
188
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
861 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
862 |
\begin{frame}[c]
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
863 |
\frametitle{\Large Buffer Overflow Attacks}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
864 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
865 |
\begin{center}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
866 |
\begin{columns}[b]
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
867 |
\begin{column}{.4\textwidth}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
868 |
\centering
|
387
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
869 |
\includegraphics[scale=0.3]{../pics/barrier.jpg}\\
|
188
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
870 |
first lecture
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
871 |
\end{column}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
872 |
\begin{column}<2>{.4\textwidth}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
873 |
\centering
|
199
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
874 |
\includegraphics[scale=0.32]{../pics/trainwreck.jpg}\\
|
188
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
875 |
next week
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
876 |
\end{column}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
877 |
\end{columns}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
878 |
\end{center}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
879 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
880 |
\end{frame}
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
881 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
16
|
882 |
|
|
883 |
\end{document}
|
|
884 |
|
|
885 |
%%% Local Variables:
|
|
886 |
%%% mode: latex
|
|
887 |
%%% TeX-master: t
|
|
888 |
%%% End:
|
|
889 |
|