# HG changeset patch
# User Christian Urban <christian dot urban at kcl dot ac dot uk>
# Date 1415054567 0
# Node ID 5616e664c0207fbae08d3f143ffb047860916c7a
# Parent  ed3c071ed36a0dc54f19056906a50e2436d4fe34
updated

diff -r ed3c071ed36a -r 5616e664c020 handouts/ho05.pdf
Binary file handouts/ho05.pdf has changed
diff -r ed3c071ed36a -r 5616e664c020 handouts/ho05.tex
--- a/handouts/ho05.tex	Mon Nov 03 13:19:51 2014 +0000
+++ b/handouts/ho05.tex	Mon Nov 03 22:42:47 2014 +0000
@@ -806,6 +806,20 @@
 that you sit in the ``middle'' of the communication of two people.
 You just have to route their traffic through a node you own.
 
+An article in The Guardien from 2013 reveals how GCHG and the NSA at a
+G20 Summit in 2009 sniffed emails from Internet cafes, monitored phone
+calls from delegates and attempted to listen on Russians phone calls
+which were transmitted via satelite links:
+
+\begin{center}
+\url{http://www.theguardian.com/uk/2013/jun/16/gchq-intercepted-communications-g20-summits}
+\end{center}
+
+\noindent
+\ldots all in the name of having a better position for
+negotiations. Hmmm\ldots
+
+
 \end{document}
 
 %%% Local Variables: 
diff -r ed3c071ed36a -r 5616e664c020 pics/car-standard.jpg
Binary file pics/car-standard.jpg has changed
diff -r ed3c071ed36a -r 5616e664c020 slides/slides06.pdf
Binary file slides/slides06.pdf has changed
diff -r ed3c071ed36a -r 5616e664c020 slides/slides06.tex
--- a/slides/slides06.tex	Mon Nov 03 13:19:51 2014 +0000
+++ b/slides/slides06.tex	Mon Nov 03 22:42:47 2014 +0000
@@ -32,13 +32,20 @@
   \end{center}
 
 \end{frame}
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     
-
-
-
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\mode<presentation>{
+\begin{frame}[c]
+\frametitle{Problems with Car Keys}
+
+\begin{center}
+\includegraphics[scale=0.4]{../pics/car-standard.jpg}
+\end{center}
+
+\end{frame}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \begin{frame}[t]
 \frametitle{Checking Solutions}
 
@@ -72,11 +79,10 @@
 this is essentially a hash function...but Bob can only check once he has also found the solution
 }
 
-\end{frame}}
+\end{frame}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\mode<presentation>{
 \begin{frame}[c]
 \frametitle{Zero-Knowledge Proofs}
 
@@ -89,7 +95,7 @@
 that Alice knows the secret.
 \end{itemize}
 
-\end{frame}}
+\end{frame}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%