Binary file hws/hw04.pdf has changed

Binary file slides/slides04.pdf has changed

--- a/slides/slides04.tex	Tue Oct 14 12:21:10 2014 +0100
+++ b/slides/slides04.tex	Sat Oct 18 02:12:23 2014 +0100
@@ -45,7 +45,7 @@
 \begin{itemize}
 \item ``Would be good, if you provide more detailed explanations. I feel 
 your slides are not as structured as they could be.''
-\item Please consider reference book chapters to cover core subject
+\item ``Please consider reference book chapters to cover core subject
 areas.''\pause
 \item ``The homework questions don't come directly from the 
 slides. So must go look things up.''
@@ -113,7 +113,7 @@
   
 "What is this string," I hear you ask?
 
-You will laugh: it is 
+You will laugh: it is\pause 
 
 \begin{center}\large
 \pcode{xmlset_roodkcableoj28840ybtide}
@@ -129,7 +129,7 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \begin{frame}[fragile]
 
-CVE-2014-0476 chkrootkit vulnerability 4 Jun'14\medskip
+CVE-2014-0476 \pcode{chkrootkit} vulnerability 4 Jun'14\medskip
 
 \begin{quote}\rm\small
 Hi,
@@ -139,8 +139,8 @@
 configurations (\pcode{/tmp} not mounted noexec). Steps to reproduce:
 
 \begin{itemize}
-\item Put an executable file named \pcode{update} with non-root owner in /tmp (not
-mounted noexec, obviously)
+\item Put an executable file named \pcode{update} with non-root owner in 
+\pcode{/tmp} (not mounted noexec, obviously)
 \item Run chkrootkit (as uid \pcode{0})
 \end{itemize}
 
@@ -148,7 +148,7 @@
 rooting your box, if malicious content is placed inside the file.
 
 If an attacker knows you are periodically running chkrootkit (like in
-cron.daily) and has write access to \pcode{/tmp} (not mounted noexec), he may
+\pcode{cron.daily}) and has write access to \pcode{/tmp} (not mounted noexec), he may
 easily take advantage of this.
 \end{quote}
 \mbox{}\\[-10mm]
@@ -752,9 +752,9 @@
 
 \begin{center}
 \begin{tabular}{ll}
-\bl{$A \rightarrow B$:} & \bl{$N_a$}\\  
-\bl{$B \rightarrow A$:} & \bl{$\{N_a, N_b\}_{K_{ab}}$}\\
-\bl{$A \rightarrow B$:} & \bl{$N_b$}\\
+\bl{$A \rightarrow B$:} & \bl{$N_A$}\\  
+\bl{$B \rightarrow A$:} & \bl{$\{N_A, N_B\}_{K_{ab}}$}\\
+\bl{$A \rightarrow B$:} & \bl{$N_B$}\\
 \end{tabular}
 \end{center}
 
@@ -762,15 +762,15 @@
 
 \begin{center}
 \begin{tabular}{ll}
-\bl{$A \rightarrow E$:} & \bl{$N_a$}\\ 
-\textcolor{gray}{$E \rightarrow A$:} & \textcolor{gray}{$N_a$}\\ 
-\textcolor{gray}{$A \rightarrow E$:} & \textcolor{gray}{$\{N_a, N_a\}_{K_{ab}}$}\\
-\bl{$E \rightarrow A$:} & \bl{$\{N_a, N_a\}_{K_{ab}}$}\\
-\bl{$A \rightarrow E$:} & \bl{$N_a \;\;(= N_b)$}\\
+\bl{$A \rightarrow E$:} & \bl{$N_A$}\\ 
+\textcolor{gray}{$E \rightarrow A$:} & \textcolor{gray}{$N_A$}\\ 
+\textcolor{gray}{$A \rightarrow E$:} & \textcolor{gray}{$\{N_A, N_A'\}_{K_{AB}}$}\\
+\bl{$E \rightarrow A$:} & \bl{$\{N_A, N_A'\}_{K_{AB}}$}\\
+\bl{$A \rightarrow E$:} & \bl{$N_A' \;\;(= N_B)$}\\
 \end{tabular}
 \end{center}\pause
 
-\small Solutions: \bl{$K_{ab} \not= K_{ba}$} or include an id in the second message
+\small Solutions: \bl{$K_{AB} \not= K_{BA}$} or include an id in the second message
 \end{frame}}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%