Binary file slides/slides05.pdf has changed

--- a/slides/slides05.tex	Wed Oct 26 00:52:18 2016 +0100
+++ b/slides/slides05.tex	Wed Oct 26 01:03:33 2016 +0100
@@ -200,8 +200,8 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
    
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-  \begin{frame}[t]
-  \frametitle{Protocols}
+\begin{frame}[t]
+\frametitle{Protocols}
  
 \mbox{} 
   
@@ -221,7 +221,27 @@
   
   \end{frame}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\begin{frame}[t]
+\frametitle{Messages}
+
+\mbox{}
+
+\begin{tabular}{l}
+{\Large \bl{$A\;\rightarrow\; B : msg$}}\\
+\end{tabular}\bigskip  
   
+\begin{itemize}
+\item Unencrypted: \bl{$msg$}
+\item Random number (nonce): \bl{$N$}
+\item Encrypted: \bl{$\{msg\}_K$}, \bl{$\{msg_1, msg_2\}_K$}, \bl{$\{\{msg\}_{K_1}\}_{K_2}$}
+\end{itemize} 
+  
+  \end{frame}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%  
+
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \begin{frame}[c]
 \frametitle{Handshakes}