--- a/app2.scala	Tue Sep 25 01:32:01 2012 +0100
+++ b/app2.scala	Tue Sep 25 02:25:56 2012 +0100
@@ -1,7 +1,7 @@
 object Application extends Controller {
 
-  def gt_cookie(c: Option[Cookie]) : Int = c match {
-    case Some(s) if (s.value.forall(_.isDigit)) => s.value.toInt 
+  def gt_cookie(c: Option[Cookie]) : Int = c.map(_.value) match {
+    case Some(s) if (s.forall(_.isDigit)) => s.toInt 
     case _ => 0
   }
 

Binary file slides01.pdf has changed

--- a/slides01.tex	Tue Sep 25 01:32:01 2012 +0100
+++ b/slides01.tex	Tue Sep 25 02:25:56 2012 +0100
@@ -528,21 +528,89 @@
 {\lstset{language=Scala}\fontsize{8}{10}\selectfont
 \texttt{\lstinputlisting{app2.scala}}}
 
+\footnotesize
+\begin{itemize}
+\item cookie value encoded as hash
+\end{itemize}
+\end{frame}}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\mode<presentation>{
+\begin{frame}[c]
+
+  \begin{center}
+  \includegraphics[scale=1.8]{pics/barrier.jpg}
+  \end{center}
+
+\end{frame}}
+ %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\mode<presentation>{
+\begin{frame}[c]
+\mbox{}\\[-9mm]
+
+{\lstset{language=Scala}\fontsize{8}{10}\selectfont
+\texttt{\lstinputlisting{app3.scala}}}
+
   
 \end{frame}}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
 
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\mode<presentation>{
+\begin{frame}[c]
+\frametitle{\begin{tabular}{c}SHA-1\end{tabular}}
+  
+\begin{itemize}
+\item SHA-1 is a cryptographic hash function
+\item no known attack exists, except brute force\bigskip\pause
+\item but dictionary attacks can be very effective for extracting passwords
+\end{itemize}  
+  
+\end{frame}}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\mode<presentation>{
+\begin{frame}[c]
+\mbox{}\\[-9mm]
+
+{\lstset{language=Scala}\fontsize{8}{10}\selectfont
+\texttt{\lstinputlisting{app4.scala}}}
+
+\end{frame}}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
+
 
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\mode<presentation>{
+\begin{frame}[c]
+\frametitle{\begin{tabular}{c}Unix Passwords\end{tabular}}
 
+% Unix password
+% http://ubuntuforums.org/showthread.php?p=5318038
+
+\end{frame}}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\mode<presentation>{
+\begin{frame}[c]
+\frametitle{\begin{tabular}{c}Password Blunders\end{tabular}}
 
 % linkedIn password
 % http://erratasec.blogspot.co.uk/2012/06/confirmed-linkedin-6mil-password-dump.html
 
+\end{frame}}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
+
 % rainbow tables
 % http://en.wikipedia.org/wiki/Rainbow_table
 
-% Unix password
-% http://ubuntuforums.org/showthread.php?p=5318038
+
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \mode<presentation>{
@@ -588,30 +656,34 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \mode<presentation>{
 \begin{frame}[c]
-\frametitle{\begin{tabular}{c}Privacy\end{tabular}}
-
+\frametitle{\begin{tabular}{c}Passwords\end{tabular}}
 
 \begin{itemize}
-\item Scott McNealy: \\``You have zero privacy anyway. Get over it.''
+\item How do recover from a breakin?
 \end{itemize}
 
 \end{frame}}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
 
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \mode<presentation>{
 \begin{frame}[c]
-\frametitle{\begin{tabular}{c}Passwords\end{tabular}}
+\frametitle{\begin{tabular}{c}This Course\end{tabular}}
 
 \begin{itemize}
-\item How do recover from a break in?
+\item breakins (buffer overflows)
+\item access control (role based, data security / data integrity)
+\item protocols
+\item access control logic
+\item privacy
+\begin{quote}
+Scott McNealy: \\``You have zero privacy anyway. Get over it.''
+\end{quote}
 \end{itemize}
 
 \end{frame}}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
 
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \mode<presentation>{
 \begin{frame}[c]