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2022-03-14 14:59:17 +00:00
\begin{frame}{Toward Anonymous Communications}
\tikzsetnextfilename{anonintro2}
\begin{tikzpicture}[scale=1]
\node (cp1) at (0,0) {\includegraphics[scale=0.26]{img/computer.pdf}};
\node[below = 0cm of cp1] (cp1t) {Alice};
\node (np1) at (2.4,0) {\includegraphics[scale=1]{img/network-provider.pdf}};
\node[below = 0.1cm of np1, text width = 2cm,align=center] (cp1t) {Network Provider};
\draw[<->, solid, black, line width=1mm] (cp1) edge (np1);
%\only<1> {
% \node (sp) at (4.75,0) {\includegraphics[scale=1]{img/service-provider.pdf}};
% \node[above=-1.2cm of sp] (ssp) {\includegraphics[scale=0.10]{img/eye.pdf}};
% \node[below = 0.1cm of sp, text width = 2cm,align=center] (spt) {Service Provider};
% \draw[<->, solid, black, line width=1mm] (np1) edge (sp);
% \draw[<->, solid, black, line width=1mm] (sp) edge (np2);
%}
%\only<1,2> {
% \node[above=-1.2cm of np1] (ssp1) {\includegraphics[scale=0.10]{img/eye.pdf}};
% %\node[above=-1.2cm of np2] (ssp2) {\includegraphics[scale=0.10]{img/eye.pdf}};
% \node (np2) at (7.1,0) {\includegraphics[scale=1]{img/network-provider.pdf}};
% \node[below = 0.1cm of np2, text width = 2cm,align=center] (spt) {Network Provider};
% \node (cp2) at (9.5,0) {\includegraphics[scale=0.26]{img/computer.pdf}};
% \node[below = 0cm of cp2] (cp2t) {Bob};
% \draw[<->, solid, black, line width=1mm] (np2) edge (cp2);
% \node[above=-1.2cm of np2] (ssp2) {\includegraphics[scale=0.10]{img/eye.pdf}};
%}
%\only<2> {
% \draw[<->, solid, black, line width=1mm] (np1) edge (np2);
%}
%\only<3> {
\node (anet) at (4.75,0) {\includegraphics[scale=1]{img/anet.pdf}};
\draw[<->, solid, black, line width=1mm] (np1) edge (anet);
\node[below = 0cm of anet, text width = 2cm,align=center] (anett) {Anonymization\\Network};
\node (qs) at (9.5,0) {\includegraphics[scale=1.3]{img/question.pdf}};
\draw[<->, solid, black, line width=1mm] (anet) edge (qs);
\node[below = 0cm of qs, text width = 2cm,align=center] (qst) {Unknown\\Destination};
\node[above=-1.4cm of np1] (cloud1) {\includegraphics[scale=0.8]{img/cloud.pdf}};
%}
\end{tikzpicture}
\begin{center}
%\only<1> {
% \Large All Providers eavesdrop\\on communications
%}
%\only<2> {
% \Large Network Providers can still eavesdrop\\on direct communications
%}
%\only<3> {
\emph{"[A] system to hide who a participant communicates with [...] in spite of an \underline{unsecured telecommunication system}"}~\footnotemark[4]
\footnotetext[4]{\fullcite{chaum1981untraceable}}
%}
\end{center}
\end{frame}
\begin{frame}[t]{Preliminary Definitions}
\tikzsetnextfilename{onsch}
\begin{tikzpicture}[scale=1]
\node (anet) {\includegraphics[scale=2]{img/anet.pdf}};
\node[right = 0cm of anet,text width=9cm,align=left] (anett) {\Large \underline{Onion Routing} is a type of\\anonymization network \\
\normalsize It favors \underline{performances}\\over \underline{resistance} to global attackers};
\node[below=0cm of anet] (reli) {\includegraphics[scale=2]{img/arelay.pdf}};
\node[right = 0cm of reli, text width=9cm] (relit) {\Large \underline{Relays} constitutes the network \\
\normalsize Relays are \underline{generic} servers executing a \underline{daemon}. They are often run by \underline{volunteers}.};
\node[below = 0cm of reli] (tor) {\includegraphics[scale=0.3]{img/tor.pdf}};
\node[right = 0cm of tor,text width=9cm,align=left] (tort) {\Large \underline{Tor} is an onion routing software \\
\normalsize Tor counts \underline{6k relays} to serve \underline{2M+ users}\\(values are approximations)};
\end{tikzpicture}
\end{frame}
\begin{frame}[t]{Circuits: Transporting Data in the Network}
\tikzsetnextfilename{circuits}
\begin{tikzpicture}[scale=1]
\node (arel1) at (3.3,3) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel3) at (3.8,5.6) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel4) at (3,7.2) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel5) at (5.3,3.3) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel6) at (4.9,4.6) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel8) at (5,6.8) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel10) at (7.6,4.2) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel11) at (6.8,5.5) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel12) at (7.3,7.0) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel2) at (3.1,4.2) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel7) at (5.8,5.6) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel9) at (7.1,2.9) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (alice) at (1,5) {\includegraphics[scale=0.26]{img/computer.pdf}};
\node[below=0cm of alice] (alicet) {Alice};
\node (q) at (10,5) {\includegraphics[scale=1]{img/question.pdf}};
\node[below=0cm of q] (qt) {Destination};
\node[circle,fill=black,minimum size=1mm,right=0cm of alice] (j0) {};
\node[circle,fill=black,minimum size=1mm,left=0cm of q] (j4) {};
\only<1> {
\node[circle,fill=red,minimum size=1mm] (j1) at (3.1,4.2) {};
\node[circle,fill=red,minimum size=1mm] (j2) at (5.8,5.6) {};
\node[circle,fill=red,minimum size=1mm] (j3) at (7.1,2.9) {};
\draw[-, solid, red, line width=1mm] (j0) edge (j1);
\draw[-, solid, red, line width=1mm] (j1) edge (j2);
\draw[-, solid, red, line width=1mm] (j2) edge (j3);
\draw[-, dashed, black, line width=1mm] (j3) edge (j4);
\node (circd) at (5.5,1.7) {\Large Data is carried through \textcolor{red}{\underline{Circuits}}};
\node[below=0cm of circd, text width=10cm,align=center] (circdd) {Circuits are \underline{3-relay-long} over Tor\\Relays are chosen by \underline{Alice}: this is Alice's circuit};
}
\only<2> {
\node[circle,fill=blue,minimum size=1mm] (j1) at (3.1,4.2) {};
\node[circle,fill=green,minimum size=1mm] (j2) at (5.8,5.6) {};
\node[circle,fill=magenta,minimum size=1mm] (j3) at (7.1,2.9) {};
\draw[-, solid, red] (j0) edge (j1);
\draw[-, solid, red] (j1) edge (j2);
\draw[-, solid, red] (j2) edge (j3);
\draw[-, dashed, black] (j3) edge (j4);
\draw[->, solid, blue,line width=1mm] (j1) edge[bend right] (j0);
\draw[->, solid, blue,line width=1mm] (j1) edge[bend left] (j2);
\draw[->, solid, green,line width=1mm] (j2) edge[bend left] (j1);
\draw[->, solid, green,line width=1mm] (j2) edge[bend right] (j3);
\draw[->, solid, magenta,line width=1mm] (j3) edge[bend right] (j2);
\draw[->, solid, magenta,line width=1mm] (j3) edge[bend left] (j4);
\node[text width=10cm,align=center] (circd) at (5.5,1.3) {\Large Relays know only their \underline{neighbors} \\
\normalsize \textcolor{blue}{Relay} \tikz\node[circle,fill=blue,minimum size=1mm] (j1) at (0,0) {}; knows Alice but not the destination \\
\textcolor{magenta}{Relay} \tikz\node[circle,fill=magenta,minimum size=1mm] (j1) at (0,0) {}; knows the destination but not Alice };
}
\end{tikzpicture}
\end{frame}
\begin{frame}[t]{Exit Mode}
\tikzsetnextfilename{exitmode}
\begin{tikzpicture}[scale=1]
\node (arel1) at (3.3,3) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel3) at (3.8,5.6) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel4) at (3,7.2) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel5) at (5.3,3.3) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel6) at (4.9,4.6) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel8) at (5,6.8) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel10) at (7.6,4.2) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel11) at (6.8,5.5) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel12) at (7.3,7.0) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel2) at (3.1,4.2) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel7) at (5.8,5.6) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel9) at (7.1,2.9) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (alice) at (1,5) {\includegraphics[scale=0.26]{img/computer.pdf}};
\node[below=0cm of alice] (alicet) {Alice};
\node (wiki) at (10,5) {\includegraphics[scale=1]{img/service-provider.pdf}};
\node[below = 0.1cm of wiki, text width = 2cm,align=center] (spt) {Service Provider};
\node[circle,fill=red,minimum size=1mm] (j1) at (3.1,4.2) {};
\node[circle,fill=red,minimum size=1mm] (j2) at (5.8,5.6) {};
\node[circle,fill=red,minimum size=1mm] (j3) at (7.1,2.9) {};
\node[circle,fill=black,minimum size=1mm,left=0cm of wiki] (j4) {};
\only<1> {
\node[circle,fill=black,minimum size=1mm,right=0cm of alice] (j0) {};
\node (circd) at (5.5,1.7) {\Large Alice connects \underline{directly} her circuit to her target};
\node[below=0cm of circd, text width=10cm,align=center] (circdd) {This is Tor's default mode, we name it \underline{Exit Mode}};
\draw[-, solid, red, line width=1mm] (j0) edge (j1);
\draw[-, solid, red, line width=1mm] (j1) edge (j2);
\draw[-, solid, red, line width=1mm] (j2) edge (j3);
\draw[-, solid, black, line width=1mm] (j3) edge (j4);
}
\only<2> {
\node[circle,fill=blue,minimum size=1mm,right=0cm of alice] (j0) {};
\draw[-, solid, red] (j0) edge (j1);
\draw[-, solid, red] (j1) edge (j2);
\draw[-, solid, red] (j2) edge (j3);
\draw[-, solid, black] (j3) edge (j4);
\draw[->, solid, blue, line width=1mm] (j0) edge[bend left=60] (j4);
\draw[->, solid, blue, line width=1mm] (j0) edge[bend right] (j1);
\draw[->, solid, blue, line width=1mm] (j0) edge[bend left] (j2);
\draw[->, solid, blue, line width=1mm] (j0) edge[bend right=60] (j3);
\node (circd) at (5.5,1.7) {\Large Alice knows all the relays and her target};
\node[below=0cm of circd, text width=10cm,align=center] (circdd) {
Only Alice is anonymous: \underline{1-way anonymity}};
}
\end{tikzpicture}
\end{frame}
\begin{frame}[t]{Onion Service Mode}
\tikzsetnextfilename{osmode}
\begin{tikzpicture}[scale=1]
\node (arel1) at (3.3,3) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel3) at (3.8,5.6) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel4) at (3,7.2) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel5) at (5.3,3.3) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel6) at (4.9,4.6) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel8) at (5,6.8) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel10) at (7.6,4.2) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel11) at (6.8,5.5) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel12) at (7.3,7.0) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel2) at (3.1,4.2) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel7) at (5.8,5.6) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel9) at (7.1,2.9) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (alice) at (1,5) {\includegraphics[scale=0.26]{img/computer.pdf}};
\node[below=0cm of alice] (alicet) {Alice};
\node (bob) at (10,5) {\includegraphics[scale=0.26]{img/computer.pdf}};
\node[below=0cm of bob] (bobt) {Bob};
\node[below=0cm of arel5] (rdv) {RDV};
\node[circle,fill=black,minimum size=1mm,right=0cm of alice] (j0) {};
\node[circle,fill=red,minimum size=1mm] (j1) at (3.1,4.2) {};
\node[circle,fill=red,minimum size=1mm] (j2) at (5.8,5.6) {};
\node[circle,fill=red,minimum size=1mm] (j3) at (7.1,2.9) {};
\node[circle,fill=black,minimum size=1mm,left=0cm of bob] (j4) {};
\node[circle,fill=orange,minimum size=1mm] (j5) at (7.3,7.0) {};
\node[circle,fill=orange,minimum size=1mm] (j6) at (3,7.2) {};
\node[circle,fill=orange,minimum size=1mm] (j7) at (5.3,3.3) {};
\draw[-, solid, red, line width=1mm] (j0) edge (j1);
\draw[-, solid, red, line width=1mm] (j1) edge (j2);
\draw[-, solid, red, line width=1mm] (j2) edge (j3);
\draw[-, solid, red, line width=1mm] (j3) edge (j7);
\draw[-, solid, orange, line width=1mm] (j7) edge (j6);
\draw[-, solid, orange, line width=1mm] (j6) edge (j5);
\draw[-, solid, orange, line width=1mm] (j5) edge (j4);
\node (circd) at (5.5,1.7) {\Large Alice connects her circuit to Bob's one};
\node[below=0cm of circd, text width=10cm,align=center] (circdd) {This feature is named \underline{Onion Service Mode} \\
Both Alice and Bob are anonymous: \underline{2-way anonymity}};
\end{tikzpicture}
\end{frame}
\begin{frame}[t]{Sending Cells over Circuits}
\tikzsetnextfilename{cells}
\begin{tikzpicture}[scale=1]
\only<1> {
\node (arel1) at (3.3,3) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel3) at (3.8,5.6) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel4) at (3,7.2) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel5) at (5.3,3.3) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel6) at (4.9,4.6) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel8) at (5,6.8) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel10) at (7.6,4.2) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel11) at (6.8,5.5) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel12) at (7.3,7.0) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel2) at (3.1,4.2) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel7) at (5.8,5.6) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel9) at (7.1,2.9) {\includegraphics[scale=1]{img/arelay.pdf}};
}
\node (alice) at (1,5) {\includegraphics[scale=0.26]{img/computer.pdf}};
\node[below=0cm of alice] (alicet) {Alice};
\node (wiki) at (10,5) {\includegraphics[scale=1]{img/service-provider.pdf}};
\node[below = 0.1cm of wiki, text width = 2cm,align=center] (spt) {Service Provider};
\node[circle,fill=black,minimum size=1mm,right=0cm of alice] (j0) {};
\node[circle,fill=black,minimum size=1mm,left=0cm of wiki] (j4) {};
\node[circle,fill=red,minimum size=1mm] (j1) at (3.1,4.2) {};
\node[circle,fill=red,minimum size=1mm] (j2) at (5.8,5.6) {};
\node[circle,fill=red,minimum size=1mm] (j3) at (7.1,2.9) {};
\draw[-, solid, red, line width=1mm] (j0) edge (j1);
\draw[-, solid, red, line width=1mm] (j1) edge (j2);
\draw[-, solid, red, line width=1mm] (j2) edge (j3);
\draw[-, solid, black, line width=1mm] (j3) edge (j4);
\only<2-17> {
\node (kr) at (0.5,6.2) {\includegraphics[scale=0.03]{img/key-red.pdf} $K_{1,2,3}$};
\node (kr2) at (3.1,3.5) {\includegraphics[scale=0.03]{img/key-red.pdf} $K_1$};
\node (kg2) at (5.8,6.1) {\includegraphics[scale=0.03]{img/key-red.pdf} $K_2$};
\node (kb2) at (7.1,2.2) {\includegraphics[scale=0.03]{img/key-red.pdf} $K_3$};
}
\only<2-5> {
\node (doc) at (1.2,0) {\includegraphics[scale=1]{img/document.pdf}};
\node[circle,fill=cyan,minimum size=1.2mm,right=0cm of alice] (j0) {};
}
\only<3-5> {
\draw[color=black!30!blue] let \p1 = (doc.north east) in (doc.south west) rectangle ($(\x1,\y1) + (0.3,0)$);
\path let \p1 = (doc.north east) in node (kb3) at ($(\x1,0) + (0.2,0)$) {\includegraphics[scale=0.03]{img/key-blue.pdf}};
}
\only<4-5> {
\draw[color=black!30!green] let \p1 = (doc.north east), \p2 = (doc.south west) in ($(\x2,\y2) - (0.2,0.2)$) rectangle ($(\x1,\y1) + (1,0.2)$);
\path let \p1 = (doc.north east) in node (kg3) at ($(\x1,0) + (1,0)$) {\includegraphics[scale=0.03]{img/key-green.pdf}};
}
\only<5> {
\draw[color=black!30!red] let \p1 = (doc.north east), \p2 = (doc.south west) in ($(\x2,\y2) - (0.4,0.4)$) rectangle ($(\x1,\y1) + (1.8,0.4)$);
\path let \p1 = (doc.north east) in node (kr3) at ($(\x1,0) + (1.8,0)$) {\includegraphics[scale=0.03]{img/key-red.pdf}};
}
\only<6> {
\node (doc) at (3.1,0) {\includegraphics[scale=1]{img/document.pdf}};
\node[circle,fill=cyan,minimum size=1.2mm] (j1) at (3.1,4.2) {};
\draw[color=black!30!blue] let \p1 = (doc.north east) in (doc.south west) rectangle ($(\x1,\y1) + (0.3,0)$);
\path let \p1 = (doc.north east) in node (kb3) at ($(\x1,0) + (0.2,0)$) {\includegraphics[scale=0.03]{img/key-blue.pdf}};
\draw[color=black!30!green] let \p1 = (doc.north east), \p2 = (doc.south west) in ($(\x2,\y2) - (0.2,0.2)$) rectangle ($(\x1,\y1) + (1,0.2)$);
\path let \p1 = (doc.north east) in node (kg3) at ($(\x1,0) + (1,0)$) {\includegraphics[scale=0.03]{img/key-green.pdf}};
}
\only<7> {
\node (doc) at (5.8,0) {\includegraphics[scale=1]{img/document.pdf}};
\node[circle,fill=cyan,minimum size=1.2mm] (j2) at (5.8,5.6) {};
\draw[color=black!30!blue] let \p1 = (doc.north east) in (doc.south west) rectangle ($(\x1,\y1) + (0.3,0)$);
\path let \p1 = (doc.north east) in node (kb3) at ($(\x1,0) + (0.2,0)$) {\includegraphics[scale=0.03]{img/key-blue.pdf}};
}
\only<8> {
\node (doc) at (7.1,0) {\includegraphics[scale=1]{img/document.pdf}};
\node[circle,fill=cyan,minimum size=1.2mm] (j3) at (7.1,2.9) {};
}
\only<9> {
\node (doc) at (10,0) {\includegraphics[scale=1]{img/document.pdf}};
\node[circle,fill=cyan,minimum size=1.2mm,left=0cm of wiki] (j4) {};
}
\only<10> {
\node (doc) at (10,0) {\includegraphics[scale=1]{img/ok.pdf}};
\node[circle,fill=cyan,minimum size=1.2mm,left=0cm of wiki] (j4) {};
}
\only<11> {
\node (doc) at (7.1,0) {\includegraphics[scale=1]{img/ok.pdf}};
\node[circle,fill=cyan,minimum size=1.2mm] (j3) at (7.1,2.9) {};
\draw[color=black!30!blue] let \p1 = (doc.north east) in (doc.south west) rectangle ($(\x1,\y1) + (0.3,0)$);
\path let \p1 = (doc.north east) in node (kb3) at ($(\x1,0) + (0.2,0)$) {\includegraphics[scale=0.03]{img/key-blue.pdf}};
}
\only<12> {
\node (doc) at (5.8,0) {\includegraphics[scale=1]{img/ok.pdf}};
\node[circle,fill=cyan,minimum size=1.2mm] (j2) at (5.8,5.6) {};
\draw[color=black!30!blue] let \p1 = (doc.north east) in (doc.south west) rectangle ($(\x1,\y1) + (0.3,0)$);
\path let \p1 = (doc.north east) in node (kb3) at ($(\x1,0) + (0.2,0)$) {\includegraphics[scale=0.03]{img/key-blue.pdf}};
\draw[color=black!30!green] let \p1 = (doc.north east), \p2 = (doc.south west) in ($(\x2,\y2) - (0.2,0.2)$) rectangle ($(\x1,\y1) + (1,0.2)$);
\path let \p1 = (doc.north east) in node (kg3) at ($(\x1,0) + (1,0)$) {\includegraphics[scale=0.03]{img/key-green.pdf}};
}
\only<13> {
\node (doc) at (3.1,0) {\includegraphics[scale=1]{img/ok.pdf}};
\node[circle,fill=cyan,minimum size=1.2mm] (j1) at (3.1,4.2) {};
\draw[color=black!30!blue] let \p1 = (doc.north east) in (doc.south west) rectangle ($(\x1,\y1) + (0.3,0)$);
\path let \p1 = (doc.north east) in node (kb3) at ($(\x1,0) + (0.2,0)$) {\includegraphics[scale=0.03]{img/key-blue.pdf}};
\draw[color=black!30!green] let \p1 = (doc.north east), \p2 = (doc.south west) in ($(\x2,\y2) - (0.2,0.2)$) rectangle ($(\x1,\y1) + (1,0.2)$);
\path let \p1 = (doc.north east) in node (kg3) at ($(\x1,0) + (1,0)$) {\includegraphics[scale=0.03]{img/key-green.pdf}};
\draw[color=black!30!red] let \p1 = (doc.north east), \p2 = (doc.south west) in ($(\x2,\y2) - (0.4,0.4)$) rectangle ($(\x1,\y1) + (1.8,0.4)$);
\path let \p1 = (doc.north east) in node (kr3) at ($(\x1,0) + (1.8,0)$) {\includegraphics[scale=0.03]{img/key-red.pdf}};
}
\only<14-17> {
\node (doc) at (1.2,0) {\includegraphics[scale=1]{img/ok.pdf}};
\node[circle,fill=cyan,minimum size=1.2mm,right=0cm of alice] (j0) {};
}
\only<14-16> {
\draw[color=black!30!blue] let \p1 = (doc.north east) in (doc.south west) rectangle ($(\x1,\y1) + (0.3,0)$);
\path let \p1 = (doc.north east) in node (kb3) at ($(\x1,0) + (0.2,0)$) {\includegraphics[scale=0.03]{img/key-blue.pdf}};
}
\only<14-15> {
\draw[color=black!30!green] let \p1 = (doc.north east), \p2 = (doc.south west) in ($(\x2,\y2) - (0.2,0.2)$) rectangle ($(\x1,\y1) + (1,0.2)$);
\path let \p1 = (doc.north east) in node (kg3) at ($(\x1,0) + (1,0)$) {\includegraphics[scale=0.03]{img/key-green.pdf}};
}
\only<14> {
\draw[color=black!30!red] let \p1 = (doc.north east), \p2 = (doc.south west) in ($(\x2,\y2) - (0.4,0.4)$) rectangle ($(\x1,\y1) + (1.8,0.4)$);
\path let \p1 = (doc.north east) in node (kr3) at ($(\x1,0) + (1.8,0)$) {\includegraphics[scale=0.03]{img/key-red.pdf}};
}
\end{tikzpicture}
\end{frame}
\begin{frame}[t]{Telescoping Circuit Building}
\begin{figure}
\tikzsetnextfilename{telescope}
\begin{tikzpicture}[scale=1]
\node (alice) at (1,5) {\includegraphics[scale=0.26]{img/computer.pdf}};
\node[below=0cm of alice] (alicet) {Alice};
\node[circle,fill=black,minimum size=1mm,right=0cm of alice] (j0) {};
\node[circle,fill=red,minimum size=1mm] (j1) at (4,5) {};
\node[circle,draw=red,minimum size=1mm] (j2) at (7,5) {};
\node[circle,draw=red,minimum size=1mm] (j3) at (10,5) {};
\draw[-, solid, red, line width=1mm] (j0) edge (j1);
\draw[-, solid, magenta, line width=1mm] (j1) edge (j2);
\node[above=0cm of j1] (j1t) {\includegraphics[height=0.5cm]{img/key-blue.pdf} $(sk_A, pk_A)$};
\node[above=0cm of j2] (j2t) {\includegraphics[height=0.5cm]{img/key-blue.pdf} $(sk_B, pk_B)$};
\node[above=0cm of j3] (j3t) {\includegraphics[height=0.5cm]{img/key-blue.pdf} $(sk_C, pk_C)$};
\node[above=0cm of j1t] (j1tt) {\includegraphics[height=0.5cm]{img/key-red.pdf} $K_1$};
\node[above=0cm of alice] (kl) {\includegraphics[height=0.5cm]{img/key-red.pdf} $K_1$};
\node (alpt) at (2,4.5) {};
\node (rpt) at (7,4.5) {};
\only<1> {
\node[text width=10cm,align=center] (expl) at (5.5, 2) {
\Large
Tor circuits provide \underline{Perfect Forward Secrecy}
\\
\normalsize
Its \underline{Telescoping} protocol builds circuits one relay at a time\\
For each relay, it runs the \underline{Tor Authentication Protocol}
};
}
\only<2> {
\node[above=0cm of kl] (kl2) {\includegraphics[height=0.5cm]{img/business.pdf} \color{magenta}$a$};
\draw[->, solid, magenta, line width=0.4mm] (alpt) edge node[sloped,anchor=north]{$Enc(pk_{B},g^a)$} (rpt);
\node[text width=10cm,align=center] (expl) at (5.5, 2) {
\Large
Based on a Diffie-Hellman Key Exchange
\\
\normalsize
Alice and relays agreed on a base $g$\\
Alice generates $a$\\
Alice sends $g^a$ to the configured relay
};
}
\only<3> {
\node[above=0cm of kl] (kl2) {\includegraphics[height=0.5cm]{img/business.pdf} a};
\node[above=0cm of j2t] (j2tt) {\includegraphics[height=0.5cm]{img/business.pdf} \color{magenta}$g^a, b$};
\draw[<-, solid, magenta, line width=0.4mm] (alpt) edge node[sloped,anchor=north]{$g^b$} (rpt);
\node[text width=10cm,align=center] (expl) at (5.5, 2) {
\Large
Based on a Diffie-Hellman Key Exchange
\\
\normalsize
Relay generates $b$\\
Relay sends $g^b$ to Alice
};
}
\only<4> {
\node[above=0cm of kl,text width=2cm] (kl2) {\includegraphics[height=0.5cm]{img/business.pdf}$a,$ \color{magenta}$g^b$ \\ $\implies g^{ba}$};
\node[above=0cm of j2t,text width=2cm] (j2tt) {\includegraphics[height=0.5cm]{img/business.pdf} $g^a, b$ \\ \color{magenta}$\implies g^{ab}$};
\node[text width=10cm,align=center] (expl) at (5.5, 2) {
\Large
Based on a Diffie-Hellman Key Exchange
\\
\normalsize
Alice and Bob have a shared secret $g^{ab} = g^{ba}$\\
The secret has not been sent on wire
};
}
\only<5> {
\draw[-, solid, red, line width=1mm] (j1) edge (j2);
\draw[-, solid, magenta, line width=1mm] (j2) edge (j3);
\node[circle,fill=red,minimum size=1mm] (j2) at (7,5) {};
\node[above=0cm of j2t] (j2tt) {\includegraphics[height=0.5cm]{img/key-red.pdf} $K_2$};
\node[above=0cm of kl] (kl2) {\includegraphics[height=0.5cm]{img/key-red.pdf} $K_2$};
\node[text width=10cm,align=center] (expl) at (5.5, 2) {
\Large
The $2^{nd}$ relay has been configured \\
\normalsize
The $3^{rd}$ can now be configured
};
}
\end{tikzpicture}
\end{figure}
\end{frame}
\begin{frame}[t]{Correlation Attacks}
\tikzsetnextfilename{coratt}
\begin{tikzpicture}[scale=1]
\only<1> {
\node (arel1) at (3.3,3) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel3) at (3.8,5.6) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel4) at (3,7.2) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel5) at (5.3,3.3) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel6) at (4.9,4.6) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel8) at (5,6.8) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel10) at (7.6,4.2) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel11) at (6.8,5.5) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel12) at (7.3,7.0) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel2) at (3.1,4.2) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel7) at (5.8,5.6) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (arel9) at (7.1,2.9) {\includegraphics[scale=1]{img/arelay.pdf}};
\node (desc) at (5.5,1.5) {\Large Anyone can run relays without prior authorization};
}
\only<2-4> {
\node (arel1) at (3.3,3) {\includegraphics[scale=0.8]{img/good.pdf}};
\node (arel3) at (3.8,5.6) {\includegraphics[scale=0.8]{img/good.pdf}};
\node (arel4) at (3,7.2) {\includegraphics[scale=0.8]{img/bad.pdf}};
\node (arel5) at (5.3,3.3) {\includegraphics[scale=0.8]{img/good.pdf}};
\node (arel6) at (4.9,4 .6) {\includegraphics[scale=0.8]{img/bad.pdf}};
\node (arel8) at (5,6.8) {\includegraphics[scale=0.8]{img/good.pdf}};
\node (arel10) at (7.6,4.2) {\includegraphics[scale=0.8]{img/good.pdf}};
\node (arel11) at (6.8,5.5) {\includegraphics[scale=0.8]{img/bad.pdf}};
\node (arel12) at (7.3,7.0) {\includegraphics[scale=0.8]{img/bad.pdf}};
\node (arel2) at (3.1,4.2) {\includegraphics[scale=0.8]{img/good.pdf}};
\node (arel7) at (5.8,5.6) {\includegraphics[scale=0.8]{img/good.pdf}};
\node (arel9) at (7.1,2.9) {\includegraphics[scale=0.8]{img/good.pdf}};
}
\node (alice) at (1,5) {\includegraphics[scale=0.26]{img/computer.pdf}};
\node[below=0cm of alice] (alicet) {Alice};
\node (wiki) at (10,5) {\includegraphics[scale=1]{img/service-provider.pdf}};
\node[below = 0.1cm of wiki, text width = 2cm,align=center] (spt) {Service Provider};
\node[circle,fill=black,minimum size=1mm,right=0cm of alice] (j0) {};
\node[circle,fill=black,minimum size=1mm,left=0cm of wiki] (j4) {};
\only<1-2> {
\node[circle,fill=red,minimum size=1mm] (j1) at (3.1,4.2) {};
\node[circle,fill=red,minimum size=1mm] (j2) at (5.8,5.6) {};
\node[circle,fill=red,minimum size=1mm] (j3) at (7.1,2.9) {};
\draw[-, solid, red, line width=1mm] (j0) edge (j1);
\draw[-, solid, red, line width=1mm] (j1) edge (j2);
\draw[-, solid, red, line width=1mm] (j2) edge (j3);
\draw[-, solid, black, line width=1mm] (j3) edge (j4);
}
\only<2> {
\node[text width=10cm,align=center] (desc) at (5.5,1.5) {\Large
Attacker run multiple relays \\
\normalsize
and make them \underline{collude} to de-anonymize Alice
};
}
\only<3> {
\node[circle,fill=red,minimum size=1mm] (j1) at (arel4.center) {};
\node[circle,fill=red,minimum size=1mm] (j2) at (arel6.center) {};
\node[circle,fill=red,minimum size=1mm] (j3) at (arel11.center) {};
\draw[-, solid, red, line width=1mm] (j0) edge (j1);
\draw[-, solid, red, line width=1mm] (j1) edge (j2);
\draw[-, solid, red, line width=1mm] (j2) edge (j3);
\draw[-, solid, black, line width=1mm] (j3) edge (j4);
\node (dea) at (5.5,1.5) {\color{red} \Large Alice is de-anonymized};
\node[left=0cm of dea] (dead) {\includegraphics{img/fail.pdf}};
}
\only<4> {
\node[circle,fill=red,minimum size=1mm] (j1) at (arel6.center) {};
\node[circle,fill=red,minimum size=1mm] (j2) at (arel8.center) {};
\node[circle,fill=red,minimum size=1mm] (j3) at (arel12.center) {};
\draw[-, solid, red, line width=1mm] (j0) edge (j1);
\draw[-, solid, red, line width=1mm] (j1) edge (j2);
\draw[-, solid, red, line width=1mm] (j2) edge (j3);
\draw[-, solid, black, line width=1mm] (j3) edge (j4);
\node[text width=7cm,align=center] (dea) at (5.5,1.5) {\Large \color{red}
Alice is still de-anonymized \\
\normalsize
It suffices to corrupt the first and last relay
};
\node[left=0cm of dea] (dead) {\includegraphics{img/fail.pdf}};
}
\end{tikzpicture}
\end{frame}
\begin{frame}[t]{The Need for Guards}
\tikzsetnextfilename{guards}
\begin{tikzpicture}[scale=1]
\node (arel1) at (3.3,3) {\includegraphics[scale=0.8]{img/good.pdf}};
\node (arel3) at (3.8,5.6) {\includegraphics[scale=0.8]{img/good.pdf}};
\node (arel4) at (3,7.2) {\includegraphics[scale=0.8]{img/bad.pdf}};
\node (arel5) at (5.3,3.3) {\includegraphics[scale=0.8]{img/good.pdf}};
\node (arel6) at (4.9,4 .6) {\includegraphics[scale=0.8]{img/bad.pdf}};
\node (arel8) at (5,6.8) {\includegraphics[scale=0.8]{img/good.pdf}};
\node (arel10) at (7.6,4.2) {\includegraphics[scale=0.8]{img/good.pdf}};
\node (arel11) at (6.8,5.5) {\includegraphics[scale=0.8]{img/bad.pdf}};
\node (arel12) at (7.3,7.0) {\includegraphics[scale=0.8]{img/bad.pdf}};
\node (arel2) at (3.1,4.2) {\includegraphics[scale=0.8]{img/good.pdf}};
\node (arel7) at (5.8,5.6) {\includegraphics[scale=0.8]{img/good.pdf}};
\node (arel9) at (7.1,2.9) {\includegraphics[scale=0.8]{img/good.pdf}};
\coordinate (c1) at (3.3,3);
\coordinate (c3) at (3.8,5.6);
\coordinate (c4) at (3,7.2) ;
\coordinate (c5) at (5.3,3.3);
\coordinate (c6) at (4.9,4.6) ;
\coordinate (c8) at (5,6.8) ;
\coordinate (c10) at (7.6,4.2);
\coordinate (c11) at (6.8,5.5) ;
\coordinate (c12) at (7.3,7.0) ;
\coordinate (c2) at (3.1,4.2) ;
\coordinate (c7) at (5.8,5.6) ;
\coordinate (c9) at (7.1,2.9) ;
\node (alice) at (1,5) {\includegraphics[scale=0.26]{img/computer.pdf}};
\node[below=0cm of alice] (alicet) {Alice};
\node (wiki) at (10,5) {\includegraphics[scale=1]{img/service-provider.pdf}};
\node[below = 0.1cm of wiki, text width = 2cm,align=center] (spt) {Service Provider};
\only<1> {
\node[circle,fill=black,minimum size=1mm,right=0cm of alice] (j0) {};
\node[circle,fill=black,minimum size=1mm,left=0cm of wiki] (j4) {};
\draw[-, solid, magenta,line width=1mm] (j0) -- (c1) -- (c8) -- (c9) -- (j4);
\draw[-, solid, cyan,line width=1mm] (j0) -- (c4) -- (c6) -- (c12) -- (j4);
\draw[-, solid, green,line width=1mm] (j0) -- (c6) -- (c9) -- (c11) -- (j4);
\draw[-, solid, orange,line width=1mm] (j0) -- (c3) -- (c5) -- (c10) -- (j4);
\node[text width=9cm,align=center] (desc) at (6.5,1.1) {\Large
\color{red}
\underline{Over a long time}, Alice will inevitably\\end up de-anonymized};
\node[left=0cm of desc] (illu) {\includegraphics{img/stop.pdf}};
}
\only<2> {
\node[circle,fill=black,minimum size=1mm,right=0cm of alice] (j0) {};
\node[circle,fill=black,minimum size=1mm,left=0cm of wiki] (j4) {};
\draw[-, solid, magenta,line width=1mm] (j0) to [bend left=10] (c1) -- (c8) -- (c9) -- (j4);
\draw[-, solid, cyan,line width=1mm] (j0) to [bend left=10] (c3) -- (c6) -- (c12) -- (j4);
\draw[-, solid, green,line width=1mm] (j0) to [bend right=10] (c1) -- (c9) -- (c11) -- (j4);
\draw[-, solid, orange,line width=1mm] (j0) to [bend right=10] (c3) -- (c5) -- (c10) -- (j4);
\node[below=0.5cm of c1] (g1) {\textcolor{blue}{Guard 1}};
\node[above=0.5cm of c3] (g2) {\textcolor{blue}{Guard 2}};
\node[text width=10cm,align=center] (desc) at (5.5,1.1) {\Large Alice always picks the same two first relays\\They are her \textcolor{blue}{\underline{Guards}}};
}
\end{tikzpicture}
\end{frame}
\iffalse
\only<5-9> {
\node (alice) at (1,5) {\includegraphics[scale=0.26]{img/computer.pdf}};
\node[below=0cm of alice] (alicet) {Alice};
\node (wiki) at (10,5) {\includegraphics[scale=0.5]{img/wiki.pdf}};
}
\only<5> {
\node (aliwiki) at (5.5,1.5) {\Large \underline{1 way anonymity}: only Alice is anonymous};
\node[below=0cm of aliwiki] (aliwikid) {Alice wants to post an article \includegraphics[scale=0.3]{img/document.pdf} on Wikipedia};
}
\only<6> {
\node[below=-1.6cm of arel2] (arel2s) {\includegraphics[scale=1]{img/sel.pdf}};
\node (alisel) at (5.5,1) {\Large Alice selects 3 relays randomly};
\node[below=0cm of alisel] (aliseld) {Some constraints apply on the selection};
}
\only<6-7> {
\node[below=-1.6cm of arel7] (arel7s) {\includegraphics[scale=1]{img/sel.pdf}};
}
\only<6-8> {
\node[below=-1.6cm of arel9] (arel9s) {\includegraphics[scale=1]{img/sel.pdf}};
}
\only<7> {
\node (alico1) at (5.5,1) {\Large Alice connects to the 1st one};
}
\fi
Reference in a new issue Copy permalink